Avèk avansman rapid nan endistriyalizasyon mondyal la, demann pou materyèl pèfòmans-wo nan otomobil, elektrik ak elektwonik, konstriksyon, domèn medikal ak lòt ap ogmante chak jou. Jeni plastik, kòm yon materyèl kle wo-pèfòmans, te piti piti ranplase materyèl metal tradisyonèl yo ak plastik jeneral nan anpil senaryo aplikasyon debaz akòz ekselan pwopriyete mekanik yo, rezistans chalè, rezistans korozyon, estabilite dimansyon ak processability. Teknoloji ekstrizyon Twin-vis se teknoloji pwosesis debaz nan konpoze jeni plastik, ak pèfòmans nan ekipman extrusion dirèkteman detèmine bon jan kalite a, efikasite pwodiksyon ak efè aplikasyon jeni pwodwi plastik.
Nou pran angajman pou bay solisyon ekstrizyon pwofesyonèl jimo-vis pou pwosesis jeni plastik, repoze sou extruders seri HTS devlope ak fabrike poukont nou yo ak bwat gwo koupl, ki fèt espesyalman pou karakteristik pwosesis yo ak bezwen aplikasyon plastik jeni. Atik sa a pral konplè elabore sou karakteristik pèfòmans yo, klasifikasyon, pwosesis difikilte nan plastik jeni, wòl debaz teknoloji extrusion jimo-vis nan pwosesis jeni plastik, the advantages of our HTS series extruders and their targeted adaptation to engineering plastics, osi byen ke jaden aplikasyon espesifik yo, processing techniques and common problems and solutions. By supplementing detailed technical parameters, processing details and industry application cases, the article will be enriched to 3000-4000 mo, providing comprehensive and professional reference for engineering plastics processing enterprises, technicians and relevant practitioners.
1. Overview of Engineering Plastics Industry and Core Performance Characteristics
1.1 Current Situation and Development Trend of Engineering Plastics Industry
Engineering plastics refer to a class of plastic materials that can be used as structural materials and bear mechanical loads in a wide temperature range. Compared with general plastics (such as polyethylene PE, polypropylene PP, polyvinyl chloride PVC), jeni plastik gen plis ekselan pèfòmans konplè, epi yo ka satisfè kondisyon yo pou itilize piman bouk nan pwodiksyon endistriyèl ak manifakti pwodwi-wo fen. Nan dènye ane yo, kondwi pa amelyore endistri en tankou otomobil ki lejè, entèlijans elektrik ak elektwonik, ak aparèy medikal high-endization, mache mondyal jeni plastik la te montre yon tandans kwasans fiks ak rapid.
Dapre done endistri ki enpòtan, gwosè mache mondyal jeni plastik te depase 100 milya dola ameriken, epi li espere kenbe yon to kwasans konpoze anyèl de 7%-10% nan senk ane kap vini yo. Pami yo, Azi-Pasifik se pi gwo jeni plastik pwodiksyon ak konsomasyon mache nan mond lan, kontablite pou plis pase 55% nan pati nan mache mondyal la, sitou akòz devlopman rapid nan otomobil, endistri elektrik ak elektwonik nan Lachin, Lend ak lòt peyi yo, osi byen ke amelyorasyon kontinyèl nan kapasite endistriyèl sipòte ak nivo inovasyon teknolojik. Lachin, kòm pi gwo konsomatè ak pwodiktè plastik jeni nan mond lan, has a huge market demand, and the annual output and consumption are growing at a double-digit rate, espesyalman nan domèn nouvo enèji machin yo, 5G communications, ak aparèy medikal, the demand for high-performance engineering plastics is showing an explosive growth trend.
The development trend of the engineering plastics industry is mainly reflected in five aspects: premye, pèfòmans segondè ak fonksyonalite. With the continuous improvement of use requirements in downstream fields, engineering plastics are developing towards higher heat resistance, higher strength, better wear resistance and special functions (tankou reta flanm dife, antistatik, anti-bakteri, radiation resistance), to adapt to the harsh working environment of high temperature, presyon ki wo, corrosion and radiation; dezyèm, lightweight and integration. In the automotive, aerospace and other fields, in order to achieve energy saving and emission reduction goals, engineering plastics are increasingly used to replace metal materials, ak entegrasyon nan konsepsyon pwodwi ap vin pi wo ak pi wo, ki ka diminye kantite pati yo, senplifye pwosesis pwodiksyon an epi redwi depans yo; twazyèm, pwoteksyon anviwònman ak resiklaj. Avèk ranfòse politik mondyal pwoteksyon anviwònman yo ak amelyorasyon konsyans pwoteksyon anviwònman an, devlopman ak aplikasyon plastik jeni resikle, plastik jeni biodégradables ak teknoloji pwosesis zanmitay anviwònman an te vin konsantre nan endistri a, diminye polisyon nan anviwònman an ki te koze pa fatra plastik; katriyèm, entèlijans ak presizyon nan ekipman pwosesis. Jeni plastik gen gwo difikilte pou pwosesis ak kondisyon kalite strik, ki mete pi wo kondisyon sou ekipman pwosesis. Entelijan, egzak ak efikas twin-vis extruders ak liy pwodiksyon otomatik yo te vin endikap nan endistri an, reyalize siveyans an tan reyèl, otomatik ajisteman paramèt ak antretyen prediksyon pwosesis pwosesis la; senkyèm, divèsifikasyon nan domèn aplikasyon yo. Jeni plastik yo piti piti elaji soti nan tradisyonèl otomobil, jaden elektrik ak elektwonik nan nouvo enèji, medikal, ayewospasyal, konstriksyon ak lòt jaden émergentes, louvri nouvo espas mache.
Kont sa a background, teknoloji extrusion jimo-vis, kòm teknoloji debaz pwosesis nan konpoze jeni plastik, te vin kle nan amelyore compétitivité nan antrepriz plastik jeni. Jeni plastik yo sansib nan surchof ak degradasyon idrolitik, epi yo gen gwo kondisyon sou tanperati pwosesis, fòs taye, tan rezidans ak presizyon kontwòl tanperati. Extruders seri HTS nou yo fèt espesyalman pou karakteristik pwosesis jeni plastik, ak gwo koupl, gwo vitès, kontwòl tanperati egzak ak dispèsibilite ekselan, ki ka efektivman rezoud difikilte pwosesis yo nan jeni plastik epi ede antrepriz reyalize bon jan kalite-wo kalite, pwodiksyon efikas ak ki estab.
1.2 Karakteristik pèfòmans debaz nan plastik Jeni
Konpare ak plastik jeneral ak materyèl metal, plastik jeni gen inik pèfòmans konplè, ki detèmine aplikasyon lajè yo nan divès domèn endistriyèl. Karakteristik pèfòmans debaz yo nan plastik jeni yo sitou reflete nan senk aspè sa yo, ki tou mete devan kondisyon espesyal pou teknoloji pwosesis yo ak ekipman yo:
1.2.1 Ekselan rezistans chalè ak rezistans frèt
Jeni plastik gen yon seri adaptasyon tanperati lajè, ki ka kenbe bon pwopriyete mekanik (fòs, severite, dite) nan tou de anviwònman tanperati ki wo ak ba. Compared with general plastics, ki anjeneral pèdi pwopriyete mekanik yo nan 80-120 ℃, pifò plastik jeni ka travay estab nan 100-250 ℃, ak kèk plastik jeni espesyal (tankou PEEK, PI) ka menm travay nan tanperati ki pi wo a 300 ℃. An menm tan an, plastik jeni tou gen bon rezistans frèt, ki ka kenbe bon rezistans nan tanperati ki ba (anba a -40 ℃), epi yo pa fasil frajil ka zo kase. Pèfòmans sa a fè plastik jeni apwopriye pou itilize nan anviwònman tanperati difisil, tankou pati motè otomobil (tanperati ki wo) ak ekipman elektrik deyò (tanperati ki ba).
Rezistans chalè ekselan nan plastik jeni se sitou akòz estrikti espesyal molekilè yo (tankou bag aromat, bag heterocyclic) ak fò fòs entèmolekilè, ki fè yo pa fasil pou fonn ak dekonpoze nan tanperati ki wo. Sepandan, sa a tou pote sèten difikilte nan pwosesis: pi wo tanperati pwosesis oblije fè yo fonn ak plastifye, ak kontwòl tanperati presi bezwen pou evite dekonpozisyon tèmik.
1.2.2 Bon rezistans korozyon ak rezistans
Jeni plastik gen estabilite chimik ekselan ak rezistans korozyon, epi yo pa fasil yo dwe korode pa asid, alkali, sèl, Solvang òganik ak lòt pwodwi chimik yo. Konpare ak materyèl metal, ki fasil rouye ak korode, plastik jeni gen plis lavi sèvis nan anviwònman chimik piman bouk. Pou egzanp, poliamid (PA) plastik jeni yo rezistan a pifò solvang òganik ak asid fèb ak alkali; polikarbonat (PC) plastik jeni yo rezistan a korozyon pa asid ki pa oksidan ak sèl; sulfid polifenilèn (PPS) plastik jeni yo rezistan a korozyon pa prèske tout pwodwi chimik eksepte asid oksidan fò.
Anplis de sa, plastik jeni gen bon rezistans move tan ak rezistans aje, epi yo pa fasil degrade ak laj anba aksyon limyè solèy la, lapli, oksijèn ak lòt faktè anviwònman an, ki asire itilizasyon ki estab alontèm yo nan anviwònman deyò ak piman bouk. Pèfòmans sa a fè plastik jeni lajman ki itilize nan ekipman chimik, deyò ekipman elektrik, pati eksteryè otomobil ak lòt jaden.
1.2.3 Pwosesis fasil ak efikasite pwodiksyon segondè
Konpare ak materyèl metal, plastik jeni gen avantaj ki genyen nan pwosesis fasil, pwosesis pwodiksyon senp ak efikasite pwodiksyon segondè. Materyèl metal anjeneral bezwen pwosedi pwosesis konplèks tankou Forge, depoze, D', ki gen gwo konsomasyon enèji, efikasite ki ba ak pri segondè; pandan y ap jeni plastik ka trete pa extrusion, bòdi piki, kònen bòdi ak lòt metòd, ki ka reyalize pwodiksyon an mas, senplifye pwosesis pwodiksyon an, redwi konsomasyon enèji ak pri pwodiksyon an. Pou egzanp, sik pwosesis la nan yon jeni plastik pati otomobil pa bòdi piki se sèlman kèk segonn a dè dizèn de segonn, pandan y ap sik pwosesis menm pati metal la ka pran plizyè èdtan a plizyè jou.
Sepandan, plastik jeni tou gen sèten difikilte pwosesis: yo sansib nan surchof ak degradasyon idrolitik, epi yo fasil dekonpoze si tanperati pwosesis la twò wo oswa tan rezidans lan twò lontan; an menm tan, kèk plastik jeni (tankou PA) gen gwo absòpsyon dlo, ki afekte efè pwosesis la ak bon jan kalite pwodwi. Se poutèt sa, li nesesè yo sèvi ak ekipman pwosesis pwofesyonèl ak teknik pwosesis syantifik asire bon jan kalite a pwosesis.
1.2.4 Ekselan estabilite dimansyon ak izolasyon elektrik
Jeni plastik gen bon estabilite dimansyon, ak pousantaj la kontraksyon piti (anjeneral 0.3%-1.5%) pandan pwosesis ak itilizasyon, ki ka asire presizyon nan dimansyon nan pwodwi yo epi evite deformation. Pèfòmans sa a patikilyèman enpòtan pou pati ki gen gwo presizyon, tankou konektè elektrik, konpozan presizyon otomobil, aparèy medikal, elatriye. Bon estabilite dimansyon nan plastik jeni se sitou akòz gwo kristalinite yo, ba absòpsyon dlo (eksepte pou kèk varyete tankou PA) ak fò fòs entèmolekilè.
Anplis de sa, pifò plastik jeni gen ekselan pèfòmans izolasyon elektrik, ki ka kenbe bon pèfòmans izolasyon nan yon seri tanperati lajè ak ranje frekans, epi yo pa fasil fè elektrisite ak arc. Sa fè plastik jeni lajman itilize nan jaden elektrik ak elektwonik, tankou ankadreman fil elektrik, lyen kab, konektè, rle, motè ak lòt konpozan elektrik.
1.2.5 Limyè pwa ak gwo fòs espesifik, Eksepsyonèl rezistans mete
Jeni plastik gen karakteristik sa yo nan pwa limyè (dansite se 1/3-1/5 nan materyèl metal) ak gwo fòs espesifik (fòs pou chak pwa inite ekivalan a oswa menm pi wo pase sa yo ki an metal materyèl). Pou egzanp, fòs espesifik nan poliamid vè fib ranfòse (PA66 + GF30) se pi wo pase sa yo ki an asye kabòn òdinè, ki ka efektivman redwi pwa a nan pwodwi pandan y ap asire pèfòmans nan mekanik. Pèfòmans sa a se patikilyèman enpòtan nan otomobil la, ayewospasyal ak lòt jaden ki pouswiv lejè ak ekonomize enèji, ki ka diminye konsomasyon gaz ak emisyon kabòn.
An menm tan an, plastik jeni tou gen rezistans mete eksepsyonèl ak rezistans friksyon, ak koyefisyan friksyon an piti, ki ka itilize nan pwodiksyon pati ki reziste mete (tankou angrenaj, bi, blòk glisman) san lubrification adisyonèl oswa ak mwens wilaj, diminye pri antretyen nan pwodwi yo. Pou egzanp, polioksimetilèn (POM) plastik jeni gen ekselan rezistans mete epi yo rekonèt kòm “asye plastik”, ki se lajman ki itilize nan pwodiksyon an nan angrenaj otomobil, eleman elektrik ak lòt pati ki reziste.
1.3 Klasifikasyon komen nan plastik Jeni
Jeni plastik ka divize an diferan kalite dapre estrikti chimik yo, nivo pèfòmans ak jaden aplikasyon. Metòd klasifikasyon komen yo se jan sa a, ki ede pi byen konprann karakteristik pwosesis yo ak senaryo aplikasyon diferan plastik jeni, epi chwazi ekipman ekstrizyon apwopriye ak teknik pwosesis:
1.3.1 Klasifikasyon pa Nivo Pèfòmans
Dapre nivo pèfòmans lan, plastik jeni ka divize an plastik jeni jeneral ak plastik jeni espesyal.
- Jeneral Jeni Plastik: Yo se plastik jeni ki pi lajman itilize, ak teknoloji pwodiksyon relativman matirite, pri modere ak bon pèfòmans konplè. Varyete prensipal yo gen ladan polyamid (PA), polikarbonat (PC), polioksimetilèn (POM), polyethylene terephthalate (PET), tereftalat polibutilèn (PBT), elatriye. Plastik jeni jeneral yo pwensipalman itilize nan otomobil, elektrik ak elektwonik, aparèy kay ak lòt jaden, tankou pati otomobil, konektè elektrik, kokiy aparèy kay, elatriye.
- Espesyal Jeni Plastik: Yo gen plis pèfòmans ekselan (tankou pi wo rezistans chalè, rezistans korozyon, pwopriyete mekanik) pase plastik jeni jeneral, men teknoloji pwodiksyon an konplèks ak pri a wo. Varyete prensipal yo enkli sulfid polifenilèn (PPS), polyether etè ketonn (PEEK), poliimid (PI), polisulfon (PSU), polyethersulfone (PES), elatriye. Plastik jeni espesyal yo sitou itilize nan jaden-wo fen tankou ayewospasyal, aparèy medikal, nouvo enèji, ak ekipman chimik, tankou konpozan ayewospasyal, implant medikal, konpozan elektrik ki reziste wo-tanperati, elatriye.
1.3.2 Klasifikasyon pa Estrikti Chimik
Dapre estrikti chimik chèn molekilè a, jeni plastik ka divize an poliamid (PA), polikarbonat (PC), polioksimetilèn (POM), polyestè (PET, PBT), sulfid polifenilèn (PPS), polyether etè ketonn (PEEK), elatriye. Chak kalite plastik jeni gen pwòp karakteristik pèfòmans inik li yo ak kondisyon pwosesis:
- Polyamid (PA): Konnen tou kòm nilon, li gen ekselan fòs mekanik, mete rezistans, severite ak rezistans chimik, men li gen gwo absòpsyon dlo, ki afekte estabilite dimansyon. Varyete komen yo enkli PA6, PA66, PA11, PA12, elatriye. Li se lajman ki itilize nan pati otomobil (angrenaj, bi, manifoul admisyon), konektè elektrik, fib twal, elatriye.
- Polikarbonat (PC): Li gen transparans ekselan, fòs enpak, heat resistance and electrical insulation, but has poor wear resistance and is easy to scratch. It is widely used in electrical and electronic fields (wiring boards, lamp covers), automotive fields (headlamp lenses, instrument panels), medical fields (medical containers), elatriye.
- Polyoxymethylene (POM): It has excellent wear resistance, friction resistance, dimensional stability and mechanical strength, and is not easy to absorb water. It is known as “asye plastik” epi li se lajman ki itilize nan pati otomobil (angrenaj, blòk glisman), electrical components (switches, bi), pati mekanik, elatriye.
- Polyester (PET, PBT): PET has excellent transparency, heat resistance and mechanical strength, and is mainly used in fibers, fim, bottles and other fields; PBT has excellent chemical resistance, electrical insulation and processing fluidity, and is widely used in electrical and electronic fields (konektè, rle), pati otomobil, elatriye.
- Polyphenylene Sulfide (PPS): Li gen ekselan rezistans chalè (long-term use temperature up to 200-220℃), rezistans korozyon, flame retardancy and electrical insulation, but has poor toughness. Li se lajman ki itilize nan konpozan elektrik ki reziste wo-tanperati, pati motè otomobil, ekipman chimik, elatriye.
- Polyether Ether Ketone (PEEK): Li gen ekselan pèfòmans konplè, alontèm itilize tanperati jiska 250-300 ℃, bon rezistans korozyon, fòs mekanik ak biocompatibility. Li se sitou itilize nan jaden-wo fen tankou ayewospasyal, implant medikal, ak segondè-tanperati rezistan eleman elektrik.
1.3.3 Klasifikasyon pa jaden aplikasyon
Dapre jaden aplikasyon an, plastik jeni ka divize an plastik jeni otomobil-klas, plastik jeni elektrik-klas, plastik jeni medikal-klas, plastik jeni ayewospasyal, elatriye. Diferan jaden aplikasyon yo gen diferan kondisyon sou pèfòmans nan plastik jeni. Pou egzanp, plastik jeni otomobil-klas mande pou bon rezistans chalè, fòs enpak ak rezistans move tan; electrical-grade engineering plastics require good electrical insulation and flame retardancy; medical-grade engineering plastics require good biocompatibility and sterility; aerospace-grade engineering plastics require good high-temperature resistance, low weight and high strength.
2. Core Processing Technology of Engineering Plastics: Twin-Screw Extrusion Technology
Engineering plastics processing mainly includes extrusion, bòdi piki, kònen bòdi, molding and other methods, among which twin-screw extrusion technology is the core technology for the production of engineering plastic compounds (such as modified engineering plastics, reinforced engineering plastics) and semi-finished products (such as pipes, dra, fib). Compared with single-screw extrusion technology, twin-screw extrusion technology has the advantages of strong shearing force, bon efè melanje, kontwòl tanperati egzak, short residence time and strong adaptability to raw materials, which can effectively solve the processing difficulties of engineering plastics (such as sensitivity to overheating and hydrolytic degradation, poor mixing effect, low processing efficiency) and ensure the quality of engineering plastic products.
2.1 Processing Difficulties of Engineering Plastics and Requirements for Extrusion Equipment
As mentioned earlier, engineering plastics have excellent comprehensive performance, but their processing difficulty is also higher than that of general plastics, mainly due to their special molecular structure and performance characteristics. The main processing difficulties of engineering plastics and the corresponding requirements for extrusion equipment are as follows:
2.1.1 Sensitivity to Overheating and Hydrolytic Degradation
Most engineering plastics (tankou PA, PBT, PPS) yo sansib nan surchof ak degradasyon idrolitik. Si tanperati pwosesis la twò wo oswa tan rezidans nan extruder la twò lontan, chèn molekilè plastik jeni an ap kraze, sa ki lakòz dekonpozisyon tèmik, ki pral diminye pwopriyete yo mekanik, rezistans chalè ak lòt pèfòmans nan pwodwi a, e menm lakòz dekolorasyon, karbonizasyon ak lòt domaj. Anplis de sa, kèk plastik jeni (tankou PA) gen gwo absòpsyon dlo, ak imidite a nan materyèl la pral lakòz degradasyon idrolitik pandan pwosesis pwosesis la wo-tanperati, afekte kalite pwodwi a.
Sa a mete devan de kondisyon kle pou ekipman extrusion: premye, kapasite kontwòl tanperati egzak, ki ka estrikteman kontwole tanperati a pwosesis nan seri a pi bon nan plastik jeni, evite surchof lokal yo, and the temperature control precision should reach ±1℃; dezyèm, tan rezidans kout, which can reduce the time that the material stays in the extruder barrel, avoid thermal decomposition and hydrolytic degradation. Twin-screw extruders have the advantages of short residence time (anjeneral 1-5 minit) ak kontwòl tanperati egzak, which are more suitable for engineering plastics processing than single-screw extruders (tan rezidans 5-10 minit).
2.1.2 High Requirements on Mixing and Dispersing Effect
In engineering plastics processing, it is often necessary to add modifiers (such as glass fiber, fib kabòn, talk, ignifuge flanm dife, konpatibilite) to improve the performance of the product (such as reinforcing, toughening, ignifuge flanm dife). Pou egzanp, adding glass fiber to PA can improve its strength and dimensional stability; adding flame retardants to PBT can improve its flame retardancy. The uniform mixing and dispersion of modifiers in the engineering plastic matrix is crucial to the performance of the final product. If the mixing and dispersing effect is poor, the modifiers will agglomerate, resulting in uneven performance of the product, and even reduce the mechanical properties of the product.
This requires the extrusion equipment to have strong shearing force and mixing capacity. Twin-screw extruders adopt intermeshing co-rotating or counter-rotating twin-screw structure, and the relative movement between the screws can generate strong shear force and kneading force, which can fully break the agglomerates of modifiers, make the modifiers uniformly dispersed in the engineering plastic matrix, and ensure the mixing and dispersing effect. Anplis de sa, konsepsyon an modilè nan jimo-vis la ka lib konbine eleman vis diferan (tankou eleman transmèt, eleman melanje, eleman taye) dapre kalite plastik jeni ak modifye, plis amelyore efè a melanje ak dispèse.
2.1.3 Kondisyon segondè sou rezistans mete nan ekipman yo
Nan pwosesis la nan plastik jeni ranfòse (tankou fib vè ranfòse PA, Fib kabòn ranfòse PPS), te ajoute fib vè a, fib kabòn ak lòt modifikatè gen gwo dite, ki pral lakòz mete grav nan vis la ak barik nan extruder la pandan pwosesis la extrusion. Si vis la ak barik gen pòv rezistans mete, yo pral mete yo byen vit, sa ki lakòz fòs taye redwi ak kapasite melanje nan extruder la, afekte bon jan kalite a pwodwi ak diminye lavi sa a ki sèvis nan ekipman an.
This requires the screw and barrel of the extruder to be made of high-quality wear-resistant materials and processed by advanced manufacturing technology. Our HTS series extruders adopt imported wear-resistant alloy steel for the screw and barrel, and undergo bimetallic composite treatment or laser cladding treatment, which greatly improves the wear resistance and corrosion resistance of the screw and barrel, and can adapt to the processing of reinforced engineering plastics with high hardness modifiers.
2.1.4 High Requirements on Processing Fluidity and Pressure Control
Some engineering plastics (such as PPS, PEEK) have high viscosity and poor processing fluidity, which require the extruder to have strong conveying capacity and pressure control capacity to ensure the smooth progress of extrusion. If the conveying capacity is insufficient or the pressure control is unstable, it will cause uneven extrusion speed, unstable product size, and even equipment blockage.
Twin-screw extruders have strong conveying capacity and stable pressure control capacity. The intermeshing of the twin screws can generate strong pumping force, which can effectively convey high-viscosity engineering plastic materials; an menm tan, the extruder is equipped with a high-precision pressure sensor, which can monitor the extrusion pressure in real time and adjust the screw speed and feeding speed automatically to ensure the stability of the extrusion pressure and the smooth progress of processing.
2.2 Working Principle and Process Flow of Engineering Plastics Twin-Screw Extrusion
The twin-screw extrusion process of engineering plastics is a complex physical and chemical process, which involves the interaction of multiple factors such as temperature, presyon, shear force and time. The core purpose is to melt and plasticize the engineering plastic raw materials and modifiers, mix them uniformly, and then extrude them into the required shape (such as particles, tiyo, dra, fib) through the die head. The specific working principle and process flow are as follows:
2.2.1 Pretretman materyèl kri
Raw material pretreatment is the foundation of engineering plastics extrusion processing, which directly affects the processing effect and product quality. The raw materials of engineering plastics mainly include engineering plastic resin (tankou PA, PC, POM), modifiers (such as glass fiber, fib kabòn, talk, ignifuge flanm dife), konpatibilite, lubricants and other additives. The pretreatment steps are as follows:
- Drying Treatment: Most engineering plastics (tankou PA, PBT, PPS) gen gwo absòpsyon dlo, and the moisture in the raw materials will cause hydrolytic degradation during high-temperature processing, resulting in product defects (such as bubbles, fant, reduced mechanical properties). Se poutèt sa, the raw materials must be dried before processing. The drying temperature and time are determined according to the type of engineering plastic: pou egzanp, PA6 is dried at 80-100℃ for 4-6 èdtan, PA66 is dried at 100-120℃ for 6-8 èdtan, PBT is dried at 120-140℃ for 2-4 èdtan, PPS is dried at 150-160℃ for 3-5 èdtan. The moisture content of the dried raw materials should be controlled below 0.1%-0.2%.
- Premixing Treatment: According to the formula ratio, the dried engineering plastic resin, modifiers and additives are put into a high-speed mixer for premixing. The purpose of premixing is to make the modifiers and additives uniformly adhere to the surface of the resin particles, improve the mixing effect during extrusion, and avoid local agglomeration of modifiers. The mixing speed is generally 800-1200 rpm, and the mixing time is 5-10 minit. For some modifiers with poor compatibility (such as glass fiber and PA), a compatibilizer should be added during premixing to improve the compatibility between the modifier and the resin.
- Crushing and Sieving: For engineering plastic resins with large particle size or modifiers with uneven particle size (such as glass fiber), crushing and sieving treatment should be carried out to ensure the uniformity of raw materials and avoid affecting the mixing and dispersing effect during extrusion. The particle size of the crushed raw materials should be controlled at 20-40 may.
2.2.2 Manje ak Transmèt
The premixed raw materials are sent to the feeding hopper of the twin-screw extruder through a screw feeder or a belt feeder. The feeding device of the extruder is usually equipped with a frequency conversion speed regulation function, which can adjust the feeding speed according to the screw speed and extrusion speed to ensure that the materials enter the extrusion cavity stably and uniformly, avoiding material accumulation or insufficient feeding. The feeding hopper is also equipped with a drying device to prevent the raw materials from absorbing moisture again during feeding.
2.2.3 K ap fonn, Mixing and Shearing
The materials entering the extrusion cavity of the twin-screw extruder are pushed forward continuously by the rotating screws. The extrusion cavity is composed of a screw and a barrel, and the volume of the extrusion cavity gradually decreases along the axis direction. When the screws rotate, the materials are gradually compressed under the action of the screws and the barrel, and the pressure in the extrusion cavity gradually increases (generally 5-15MPa).
An menm tan an, the materials are subjected to strong shear force and friction force generated by the relative movement between the screws and the barrel, as well as between the screw flights. The shear force and friction force can fully break the agglomerates of modifiers, make the modifiers uniformly dispersed in the melted engineering plastic resin, and promote the fusion and compatibility between the modifier and the resin. The friction force can also generate a certain amount of heat, which is combined with the external heating of the barrel (electric heating or steam heating) to make the engineering plastic resin gradually melt and plasticize.
The barrel of the extruder is usually divided into 4-6 seksyon kontwòl tanperati (feeding section, melting section, mixing section, homogenizing section, die head section), and the temperature of each section is precisely controlled according to the type of engineering plastic. Pou egzanp, when processing PA66+GF30 (glass fiber reinforced PA66), the temperature of the feeding section is 120-140℃, the melting section is 250-260℃, the mixing section is 260-270℃, the homogenizing section is 250-260℃, and the die head section is 240-250℃. The precise temperature control can ensure that the resin is fully melted without thermal decomposition, and the modifiers are uniformly dispersed.
2.2.4 Extrusion and Shaping
The fully melted, mixed and dispersed material is pushed to the die head of the extruder by the screws. The die head is designed according to the shape of the final product: for the production of engineering plastic compounds (granules), the die head is equipped with multiple circular die holes (the number and size of die holes are determined according to the particle size of the granules); for the production of pipes, dra, fib, the die head is designed into corresponding shapes (such as circular die for pipes, flat die for sheets).
The material is extruded from the die head at a high speed to form continuous semi-finished products (such as strips for granules, tiyo, dra). The temperature of the die head is slightly lower than that of the homogenizing section, which can prevent the material from decomposing due to excessive temperature and ensure the shaping effect of the semi-finished products. The extrusion speed is controlled according to the type of engineering plastic and the shape of the product, generally ranging from 0.5-5m/min.
2.2.5 Cooling and Solidification
The extruded semi-finished products are sent to a cooling device for rapid cooling and solidification. The cooling method is determined according to the shape of the product: for strips (granule production), water tank cooling is usually used, and the cooling water temperature is controlled at 20-30℃, ak tan refwadisman an se 2-5 minit; for pipes and sheets, air cooling or water spray cooling is used, and the cooling speed should be controlled to avoid product deformation due to uneven cooling. Rapid cooling can make the semi-finished products solidify quickly, maintain the shape and size of the products, and improve the mechanical properties of the products.
2.2.6 Cutting and Post-Processing
Apre refwadisman ak solidifikasyon, the semi-finished products are processed into the final product through cutting or other post-processing steps. For the production of engineering plastic compounds (granules), the cooled strips are sent to a granulator for cutting, and the granulator is equipped with a rotary knife, which can cut the strips into granular products with uniform size (the particle size is generally 2-5mm, which can be adjusted according to customer needs). For the production of pipes and sheets, the cooled semi-finished products are cut into the required length through a cutting machine; for the production of fibers, the cooled filaments are drawn and wound to form fiber products.
Anplis de sa, the final product also needs to undergo post-processing steps such as screening, inspection and packaging. The screening step is to remove unqualified products (such as too large, too small or agglomerated particles); the inspection step is to detect the performance (such as mechanical strength, rezistans chalè, presizyon dimansyon) of the product to ensure that it meets the customer’s requirements; the packaging step is to package the qualified product in a sealed and moisture-proof manner to prevent the product from absorbing moisture and affecting the quality.
2.3 Key Factors Affecting Engineering Plastics Twin-Screw Extrusion Effect
The effect of twin-screw extrusion directly affects the quality and performance of engineering plastic products. There are many factors affecting the extrusion effect, mainly including raw material characteristics, formula ratio, premixing effect, extrusion parameters and die head structure. Mastering these key factors and making scientific adjustments can ensure the stability of the extrusion effect and the consistency of product quality.
2.3.1 Karakteristik materyèl bwit yo
Kalite a, gwosè patikil, moisture content and purity of raw materials have a great impact on the extrusion effect. Pou egzanp, the particle size of engineering plastic resin and modifiers should be uniform; if the particle size is uneven, it will lead to uneven melting and mixing of materials. The moisture content of raw materials must be strictly controlled below 0.1%-0.2%; if the moisture content is too high, it will cause hydrolytic degradation of the material and bubbles in the product. Pite nan matyè premyè tou trè enpòtan; enpurte nan matyè premyè (tankou metal, wòch, pousyè) pa pral sèlman afekte bon jan kalite a pwodwi, men tou mete vis la ak barik nan extruder la, e menm lakòz blokaj ekipman yo.
2.3.2 Pwopòsyon fòmil
Rapò fòmil konpoze jeni plastik (rapò a nan résine, modifikatè ak aditif) se kle pou detèmine pèfòmans pwodwi a. Kalite ak dòz modifikatè yo ta dwe detèmine selon kondisyon pèfòmans pwodwi a. Pou egzanp, ajoute 20%-40% nan fib vè nan PA ka siyifikativman amelyore fòs li yo ak estabilite dimansyon, men twòp fib vè ap diminye severite ak pwosesis likidite pwodwi a. Kalite ak dòz aditif yo bezwen tou rezonab matche: compatibilizers can improve the compatibility between modifiers and resin, and the dosage is generally 0.5%-2%; lubricants can reduce the friction between materials and equipment, amelyore likidite pwosesis, and the dosage is generally 0.3%-1%; antioxidants can prevent the material from thermal oxidation degradation during processing, and the dosage is generally 0.1%-0.5%.
2.3.3 Premixing Effect
Premixing is the foundation of extrusion processing. The uniformity of premixing directly affects the mixing and dispersing effect of modifiers during extrusion. If the premixing is uneven, the modifiers cannot be uniformly adhered to the surface of the resin, resulting in local agglomeration of modifiers, uneven mixing of materials during extrusion, and reduced product performance. To ensure the premixing effect, it is necessary to control the mixing speed, mixing time and mixing temperature: the mixing speed is 800-1200 rpm, the mixing time is 5-10 minit, and the mixing temperature is controlled at 40-60℃ (appropriate temperature can improve the adhesion of additives and promote uniform mixing).
2.3.4 Paramèt extrusion
Extrusion parameters are the most important factors affecting the extrusion effect, sitou ki gen ladan vitès vis, ekstrizyon tanperati ak presyon extrusion.
- Vitès vis: The screw speed of twin-screw extruders for engineering plastics generally ranges from 100 pou 1000 rpm. Our HTS series extruders can reach a maximum speed of 1000 rpm. Plis vitès vis la pi wo, pi gwo fòs taye ak fòs friksyon materyèl yo resevwa, the better the mixing and dispersing effect of modifiers, and the higher the production efficiency. Sepandan, si vitès vis la twò wo, tan rezidans materyèl yo nan kavite ekstrizyon an twò kout, resulting in incomplete melting of the resin, insufficient mixing of materials, and uneven product quality; if the screw speed is too low, the shear force and friction force are insufficient, the modifiers cannot be fully dispersed, and the production efficiency is low. The screw speed should be adjusted according to the type of engineering plastic and the type of modifier: for high-viscosity engineering plastics (such as PPS, PEEK), a lower screw speed is needed to ensure sufficient melting and mixing; for reinforced engineering plastics (tankou fib vè ranfòse PA), a higher screw speed is needed to ensure the uniform dispersion of glass fiber.
- Extrusion Temperature: The extrusion temperature is the key to ensuring the melting and plasticization of engineering plastics. The temperature of each section of the barrel and die head must be precisely controlled according to the type of engineering plastic. The temperature of the feeding section is lower (slightly higher than the drying temperature of the raw materials), which is mainly to prevent the materials from caking and ensure smooth feeding; the temperature of the melting section is medium, which is mainly to promote the melting and plasticization of the resin; the temperature of the mixing section is higher, which is mainly to enhance the shear and mixing effect, and promote the uniform dispersion of modifiers; the temperature of the homogenizing section is slightly lower than the mixing section, which is mainly to ensure the uniform temperature and viscosity of the materials, and avoid thermal decomposition; the temperature of the die head section is slightly lower than the homogenizing section, which is to ensure the shaping effect of the semi-finished products. The temperature control precision should reach ±1℃ to avoid local overheating and thermal decomposition of the material.
- Presyon extrusion: The extrusion pressure of engineering plastics twin-screw extrusion generally ranges from 5 to 15MPa. Presyon an nan kavite a ekstrizyon sitou detèmine pa rapò a konpresyon nan vis la, gwosè a twou mouri ak vitès la vis. Pi wo presyon an extrusion, the better the mixing and dispersing effect of materials, and the denser the product. Sepandan, si presyon an twò wo, li pral ogmante konsomasyon enèji ak mete nan ekipman an, e menm lakòz tèt mouri a bloke; si presyon an twò ba, materyèl yo pa ka konplètman konprese ak melanje, the product is loose, ak pèfòmans lan se enstab. The extrusion pressure should be adjusted according to the type of engineering plastic and the shape of the product: for high-viscosity materials and products with small die holes, a higher extrusion pressure is needed.
2.3.5 Estrikti tèt mouri
The die head structure mainly includes the shape, size and number of die holes, which directly affects the shaping effect and quality of the product. For the production of engineering plastic compounds (granules), the die head should be equipped with multiple uniform die holes, and the size of the die holes should be matched with the particle size of the product; for the production of pipes and sheets, the die head should be designed according to the shape and size of the product, and the flow channel of the die head should be smooth to avoid material accumulation and local overheating. The die head should also be equipped with a temperature control device to ensure the uniform temperature of the die head and the stable shaping of the product.
3. Our HTS Series Extruders: Professional Solutions for Engineering Plastics Processing
We have long been engaged in the research, development and production of high-performance twin-screw extruders, and have accumulated rich experience in the field of engineering plastics processing. According to the processing characteristics of engineering plastics (sensitivity to overheating and hydrolytic degradation, high requirements on mixing and dispersing effect, high viscosity) and application needs, we have developed the HTS series twin-screw extruders specially for engineering plastics processing. Our HTS series extruders adopt high-torque gearboxes, with a specific torque of 14Nm/cm³ and a maximum speed of up to 1000rpm, which can obtain higher output, shorter residence time, better dispersibility and more precise temperature control, perfectly adapting to the processing needs of various engineering plastics.
3.1 Core Advantages of HTS Series Extruders for Engineering Plastics Processing
3.1.1 High Torque and High Speed, High Production Efficiency
Engineering plastics have high viscosity and poor processing fluidity, which require the extruder to have strong torque and conveying capacity. Our HTS series extruders adopt high-torque gearboxes independently developed and manufactured by us (HTS PLUS series and HTS SUPER series) or imported from leading European manufacturers (HTS BASIC series), with a specific torque of 14Nm/cm³, which is much higher than that of ordinary twin-screw extruders (general torque is 8-12Nm/cm³). The high torque design ensures that the extruder can stably convey high-viscosity engineering plastic materials, avoid material accumulation and equipment blockage, and improve the stability of the extrusion process.
An menm tan an, the HTS series extruders have a high speed design, with a maximum speed of up to 1000rpm. The high speed can generate strong shear force and mixing force, which can fully break the agglomerates of modifiers, make the modifiers uniformly dispersed in the resin matrix, and improve the mixing and dispersing effect. Anplis de sa, the high speed design also greatly improves the production efficiency: compared with ordinary extruders, the production efficiency of HTS series extruders can be increased by 30%-50%, which can meet the large-scale production needs of engineering plastics enterprises.
3.1.2 Short Residence Time, Effectively Avoiding Thermal Degradation
As engineering plastics are sensitive to overheating and hydrolytic degradation, the residence time of materials in the extruder is crucial. Our HTS series extruders adopt an optimized screw structure and barrel design, with a short residence time of only 1-3 minit, which is much shorter than that of ordinary twin-screw extruders (5-10 minit) and single-screw extruders (10-15 minit). The short residence time can effectively reduce the contact time between the material and high temperature, avoid thermal decomposition and hydrolytic degradation of the material, and ensure the mechanical properties and heat resistance of the product.
Anplis de sa, the screw of the HTS series extruders adopts a modular design, and different screw elements can be freely combined according to the type of engineering plastic, which can further adjust the residence time of the material, ensuring that different types of engineering plastics can obtain the optimal residence time during processing.
3.1.3 Precise Temperature Control, Stable Performance
The HTS series extruders adopt an advanced intelligent temperature control system, which can realize precise control of the temperature of each section of the barrel and the die head. The temperature control precision can reach ±1℃, ki ka estrikteman kontwole tanperati a pwosesis nan seri a pi bon nan plastik jeni, avoid local overheating and thermal decomposition of the material. The temperature control system is equipped with a real-time monitoring and alarm function: if the temperature of any section exceeds the set range, the system will issue an alarm prompt in time, and even automatically adjust the heating power or shut down the equipment if necessary, to avoid equipment failure and product quality problems.
Anplis de sa, the barrel of the HTS series extruders adopts a double-layer jacket design, which can realize rapid heating and cooling, and improve the response speed of temperature control. The die head is also equipped with an independent temperature control device, which ensures the uniform temperature of the die head and the stable shaping of the product.
3.1.4 Excellent Mixing and Dispersing Effect
The HTS series extruders adopt an intermeshing co-rotating twin-screw structure, with a reasonable screw pitch, lead and compression ratio design. Intermeshing la ak wotasyon nan vis jimo yo ka jenere fòs taye fò ak fòs kneading, which can fully break the agglomerates of modifiers (such as glass fiber, fib kabòn, talk), make the modifiers uniformly dispersed in the engineering plastic resin matrix, and ensure the mixing and dispersing effect. The mixing uniformity of the HTS series extruders can reach more than 95%, which is much higher than that of ordinary twin-screw extruders (85%-90%).
The screw of the HTS series extruders adopts a modular design, and different types of screw elements (tankou eleman transmèt, eleman melanje, eleman taye) can be freely combined according to the type of engineering plastic and modifier. Pou egzanp, when processing reinforced engineering plastics with glass fiber, more shearing elements can be configured to enhance the shearing effect and ensure the uniform dispersion of glass fiber; when processing engineering plastics with high viscosity (such as PPS), more mixing elements can be configured to improve the mixing effect and ensure the uniform viscosity of the material.
3.1.5 High Wear Resistance, Long Service Life
Nan pwosesis la nan plastik jeni ranfòse (tankou fib vè ranfòse PA, Fib kabòn ranfòse PPS), the added modifiers have high hardness, which will cause serious wear to the screw and barrel of the extruder. Our HTS series extruders adopt high-quality wear-resistant materials and advanced manufacturing technology to ensure the wear resistance of the core components.
The screw and barrel of the HTS series extruders are made of imported wear-resistant alloy steel (such as 38CrMoAlA), and undergo bimetallic composite treatment or laser cladding treatment. The surface hardness of the screw and barrel can reach ≥65 HRC (HTS BASIC series) and ≥70 HRC (HTS PLUS series and HTS SUPER series), which has extremely strong wear resistance and corrosion resistance, and can effectively resist the wear caused by high-hardness modifiers. This greatly extends the service life of the screw and barrel: the service life of the screw and barrel of the HTS series extruders is 2-3 times that of ordinary extruders, reducing the frequency of component replacement and the maintenance cost of the equipment.
Anplis de sa, we also provide professional wear detection services for the screw and barrel. Our technical team will regularly detect the wear degree of the screw and barrel for customers, issue a detailed wear report, and put forward targeted replacement and maintenance suggestions, ensuring that customers only replace components when necessary, avoiding unnecessary waste.
3.1.6 Wide Application Range, Strong Flexibility
The HTS series extruders have a wide application range, which can adapt to the processing needs of various engineering plastics, including general engineering plastics (PA, PC, POM, PET, PBT) and special engineering plastics (PPS, PEEK, PSU, PES). The extruders can also adapt to the processing of various modified engineering plastics, such as reinforced engineering plastics (glass fiber reinforced, carbon fiber reinforced), toughened engineering plastics, flame-retardant engineering plastics, antistatic engineering plastics, elatriye.
The modular design of the HTS series extruders (vis, barik, mouri tèt, elatriye.) makes the replacement of components more convenient and quick. When customers need to adjust the product type (such as switching from PA processing to PPS processing) or modify the formula, they only need to replace the corresponding components, san yo pa ranplase tout ekipman an, which reduces the cost of equipment transformation and improves the flexibility and adaptability of the equipment. Anplis de sa, the HTS series extruders can also be matched with different auxiliary equipment (tankou mixer gwo vitès, dryers, coolers, granulators, screening machines, packaging machines) to form a complete automatic production line, realizing continuous production from raw material pretreatment to product packaging.
3.1.7 Intelligent Control, Easy Operation and Maintenance
The HTS series extruders adopt a PLC intelligent control system and a touch screen operation interface, which is simple and intuitive, fasil pou opere. The system can store multiple sets of product formulas and processing parameters. When customers produce different types of engineering plastics, they only need to call the corresponding formula and parameters, without repeated debugging, which saves time and improves production efficiency.
The system is also equipped with a real-time monitoring function, which can monitor the key parameters of the extrusion process (such as temperature, presyon, vitès vis, vitès manje) in real time, and record the production data (such as output, processing time) for later query and analysis. For the HTS SUPER series extruders, we also provide a cloud control function, which can realize remote parameter adjustment, production data monitoring and predictive maintenance of equipment, realizing intelligent production management.
Anplis de sa, the HTS series extruders adopt a reasonable structural design, which makes the maintenance more convenient. The screw, barik, die head and other components can be disassembled and assembled quickly, which reduces the maintenance time and labor intensity. Our after-sales service team will provide professional installation, commissioning and training services for customers, ensuring that customers can use the equipment smoothly.
3.2 HTS Series Extruder Product Types and Their Adaptation to Engineering Plastics
In order to meet the diverse processing needs of engineering plastics enterprises of different scales and product types, we have launched three main product types in the HTS series: HTS BASIC series, HTS PLUS series and HTS SUPER series. Each series has its own characteristics and targeted adaptation scenarios, which can be selected by customers according to their own production scale, product type, budget and other factors.
3.2.1 HTS BASIC Series Extruders: Flexible and Cost-Effective Choice for General Engineering Plastics
The HTS BASIC series extruders are a cost-effective product series designed for engineering plastics processing enterprises with medium and small production scales or initial entry into the industry. This series of extruders uses medium-torque gearboxes from leading European manufacturers, which have the advantages of stable performance, bri ki ba, efikasite segondè ak lavi sèvis long. Konsepsyon mwayen koupl la (koupl espesifik 10-12Nm / cm³) ka satisfè bezwen pwosesis yo nan pifò plastik jeni jeneral (tankou PA6, PA66, POM, PET, PBT) ak ba-a-mwayen plastik jeni modifye (tankou fib vè ranfòse PA ak kantite lajan ranpli ≤30%).
An tèm de konsepsyon estriktirèl, extruders seri HTS BASIC yo adopte yon estrikti paralèl ko-wotasyon jimo-vis, ak yon dyamèt vis sòti nan 30mm a 65mm, ak yon rapò konpresyon 4 ~ 8, ki ka ajiste selon kalite plastik jeni. Se barik la te fè nan mete ki reziste asye alyaj ak tretman nitrure, ak vis la te fè nan mete ki reziste ak korozyon ki reziste asye alyaj, ki gen bon rezistans mete. Ekstrè a ekipe ak yon sistèm kontwòl PLC ak yon koòdone operasyon manyen ekran, which can realize automatic feeding, kontwòl otomatik tanperati, automatic pressure control and automatic cutting, and is simple and easy to operate.
The production capacity of the HTS BASIC series extruders ranges from 100kg/h to 500kg/h, which is suitable for medium and small-sized engineering plastics processing enterprises that mainly produce general engineering plastics and low-to-medium modified engineering plastics. One of the biggest advantages of this series is that it can provide flexible options through different configuration combinations. Customers can choose different screw elements, mouri tèt, feeding devices, drying devices and post-processing equipment according to their own product types, production capacity and budget, so as to form a production line suitable for their own needs. The HTS BASIC series extruders have a reasonable price, which can help enterprises reduce the initial investment cost.
3.2.2 HTS PLUS Series Extruders: High-Performance Choice for Engineering Plastics and Modified Products
Ekstrudeurs seri HTS PLUS yo adopte bwat gwo koupl poukont devlope ak fabrike pa nou, with a specific torque of 14Nm/cm³, which has stronger torque and load-bearing capacity than the HTS BASIC series. This series of extruders is mainly designed for the processing of high-performance engineering plastics, high-modified engineering plastics and special engineering plastics (such as PPS), which is suitable for medium and large-scale engineering plastics processing enterprises that pursue high performance and high efficiency.
Extruders seri HTS PLUS yo gen yon dyamèt vis ki sòti nan 65mm a 110mm., yon rapò konpresyon 5 ~ 10, and a screw speed range of 200～800 rpm. Vis la ak barik adopte tretman konpoze bimetalik, ki gen pi wo rezistans mete ak rezistans korozyon (surface hardness ≥65 HRC), and can adapt to the processing of reinforced engineering plastics with high filling amount (such as glass fiber reinforced PA with filling amount 30%-50%, Fib kabòn ranfòse PPS) and high-hardness modifiers. The extruder is equipped with an advanced intelligent temperature control system and a high-precision pressure sensor, which can realize precise control of extrusion parameters and real-time monitoring of production data, ensuring the stability of the extrusion process and the quality of the product.
The production capacity of the HTS PLUS series extruders ranges from 500kg/h to 2000kg/h, which is suitable for the large-scale production of general engineering plastics, high-modified engineering plastics and special engineering plastics (such as PPS). This series of extruders has excellent mixing and dispersing effect, short residence time and high production efficiency, which can effectively solve the processing difficulties of high-viscosity and high-modified engineering plastics, and help enterprises improve product quality and production efficiency.
3.2.3 HTS SUPER Series Extruders: Top-End Choice for High-End Engineering Plastics
The HTS SUPER series extruders adopt the latest ultra-high torque transmission device independently developed by us, with a specific torque of 14Nm/cm³ and a maximum speed of up to 1000rpm. Aiming at the high torque and high speed characteristics of this series, the structural design of each key component of the extruder has been completely optimized, which is our highest-end extruder series, representing the advanced level of China’s extruder development. This series of extruders is mainly designed for the processing of high-end special engineering plastics (tankou PEEK, PI, PSU, PES) and high-performance modified engineering plastics (such as carbon fiber reinforced PEEK, glass fiber reinforced PI), which is suitable for large-scale high-end engineering plastics processing enterprises that pursue high precision, high performance and intelligence.
The HTS SUPER series extruders have a screw diameter ranging from 80mm to 130mm, a compression ratio of 6～12, and a screw speed range of 250～1000 rpm. The screw and barrel adopt imported wear-resistant alloy steel and laser cladding technology, which has extremely high wear resistance and corrosion resistance (surface hardness ≥70 HRC), and can adapt to the processing of special engineering plastics with high temperature resistance, high viscosity and high-hardness modifiers. The extruder is equipped with an intelligent PLC + cloud touch screen control system, which can realize remote parameter adjustment, production data monitoring, predictive maintenance of equipment and data analysis, realizing intelligent production management.
The production capacity of the HTS SUPER series extruders ranges from 1000kg/h to 3000kg/h, which is suitable for the large-scale production of high-end special engineering plastics and high-performance modified engineering plastics. This series of extruders has the advantages of high precision, strong customization, multi-function and stable performance, which can meet the most stringent processing requirements of high-end engineering plastics. The short residence time (1-2 minit) and precise temperature control can effectively avoid the thermal decomposition of special engineering plastics, ensuring the excellent performance of the product. Anplis de sa, the HTS SUPER series extruders can also be customized according to the special processing needs of customers, providing personalized solutions.
3.3 Selection Suggestions for Engineering Plastics Extruders
When selecting twin-screw extruders for engineering plastics processing, enterprises need to comprehensively consider their own production needs, product types, processing scale, budget and other factors to ensure that the selected equipment can meet the actual processing needs and bring maximum economic benefits. The following are some specific selection suggestions:
3.3.1 Determine the Extruder Series According to the Type of Engineering Plastics
Different types of engineering plastics have different processing requirements, which determine the selection of extruder series. For general engineering plastics (PA6, PA66, POM, PET, PBT) with low modification degree (filling amount ≤30%), the HTS BASIC series is sufficient to meet the processing needs. Its medium torque and flexible configuration can balance processing effect and cost, which is very suitable for small and medium-sized enterprises that just start to engage in engineering plastics processing or focus on general-purpose products. For high-modified engineering plastics (kantite lajan ranpli 30%-50%, tankou fib vè ranfòse PA, carbon fiber reinforced PBT) and special engineering plastics with moderate processing difficulty (such as PPS), the HTS PLUS series is the preferred choice. Its high torque of 14Nm/cm³ and excellent mixing and dispersing capacity can effectively solve the problem of uneven dispersion of high-content modifiers, and its wear-resistant screw and barrel can adapt to the wear of hard modifiers, ensuring stable production. For high-end special engineering plastics (PEEK, PI, PSU, PES) and high-performance modified engineering plastics (filling amount ≥50%, such as carbon fiber reinforced PEEK), the HTS SUPER series must be selected. Its ultra-high torque, maximum 1000rpm speed and fully optimized key structure can cope with the high viscosity, high temperature resistance and strict processing requirements of high-end materials, avoid thermal decomposition and material degradation, and ensure the high performance of the final product.
3.3.2 Determine the Screw Diameter and Production Capacity According to the Processing Scale
The screw diameter of the twin-screw extruder directly determines the production capacity, and enterprises need to select the appropriate screw diameter according to their own production scale and order demand. For small-scale production (100kg/h – 500kg/h), such as small-batch customization, product research and development or small orders, the HTS BASIC series with screw diameter of 30mm – 65mm is suitable; for medium-scale production (500kg/h – 2000kg/h), such as mass production of general modified engineering plastics, the HTS PLUS series with screw diameter of 65mm – 110mm can meet the demand; pou pwodiksyon gwo echèl (1000kg/h – 3000kg/h), such as large-scale production of high-end special engineering plastics or large orders from downstream enterprises, the HTS SUPER series with screw diameter of 80mm – 130mm is the best choice. It should be noted that when selecting, enterprises should not blindly pursue large production capacity. They should also consider the fluctuation of order quantity. If the order quantity is unstable, they can choose equipment with adjustable speed and flexible production capacity (such as HTS BASIC series with frequency conversion speed regulation function) to avoid waste of equipment resources and energy.
3.3.3 Consider the Modification Demand and Mixing Effect
If the enterprise’s main products are modified engineering plastics, the mixing and dispersing effect of the extruder is the key factor to be considered. For products that need to add a variety of modifiers (tankou rezistan flanm dife, konpatibilite, reinforcing agents) an menm tan, it is necessary to select extruders with excellent mixing performance, such as HTS PLUS series and HTS SUPER series with modular mixing screw elements. These two series can freely combine conveying elements, mixing elements and shearing elements according to the type of modifier, adjust the mixing intensity and residence time, and ensure that various modifiers are uniformly dispersed in the resin matrix. Pou egzanp, when processing flame-retardant modified PBT, more mixing elements can be configured to ensure the uniform dispersion of flame retardants, avoid local flame retardancy insufficiency; when processing glass fiber reinforced PA, more shearing elements can be configured to break the agglomeration of glass fiber and improve the bonding force between glass fiber and resin. Anplis de sa, if the enterprise has the demand of multi-variety and small-batch modification, it is recommended to select the extruder with quick replacement of screw elements (such as the modular screw design of HTS series), which can reduce the time of equipment adjustment and improve production efficiency.
3.3.4 Consider the Cost Budget and Comprehensive Benefits
Cost budget is an important factor for enterprises to select equipment, but it is not advisable to pursue low cost blindly. It is necessary to balance the initial purchase cost, later maintenance cost, energy consumption and production efficiency to maximize the comprehensive benefits. The HTS BASIC series has the lowest initial purchase cost, low energy consumption and simple maintenance, which is suitable for enterprises with limited budget and small production scale; the HTS PLUS series has a moderate initial purchase cost, but its high production efficiency, long service life and stable processing effect can reduce the later maintenance cost and improve product qualification rate, which is suitable for medium and large-sized enterprises with certain budget and pursuit of high performance; the HTS SUPER series has the highest initial purchase cost, but it can process high-end products with high added value, and its intelligent control and long service life can reduce labor cost and maintenance cost in the later period, which is suitable for large-scale enterprises with sufficient budget and focus on high-end market. Anplis de sa, enterprises should also consider the after-sales service of the equipment. Our HTS series extruders provide a complete after-sales service system, ki gen ladan enstalasyon, komisyonin, fòmasyon teknik, regular maintenance and quick replacement of spare parts, which can reduce the later operation risk of enterprises.
3.3.5 Consider the Compatibility with Auxiliary Equipment
Twin-screw extrusion processing of engineering plastics needs to be matched with a series of auxiliary equipment, such as raw material drying equipment, high-speed mixer, cooler, granulator, screening machine, packaging machine, elatriye. When selecting the extruder, enterprises need to consider the compatibility between the extruder and auxiliary equipment to ensure the smooth operation of the entire production line. Our HTS series extruders can be perfectly matched with various standard auxiliary equipment, and can also be customized according to the enterprise’s existing auxiliary equipment to avoid the waste caused by the incompatibility between new equipment and old auxiliary equipment. Pou egzanp, if the enterprise already has a high-speed mixer with a mixing capacity of 500kg, it can select the HTS PLUS series extruder with a production capacity of 500kg/h – 800kg/h to match it, ensuring the coordination of raw material premixing and extrusion production.
4. Application Fields of Engineering Plastics and Matching HTS Series Extruder Solutions
Jeni plastik, with their excellent comprehensive performance, have been widely used in automotive, elektrik ak elektwonik, medikal, ayewospasyal, chimik, construction and other fields. Different application fields have different requirements on the performance of engineering plastic products, which also puts forward different requirements on extrusion processing equipment. Anba a, we will elaborate on the application characteristics of engineering plastics in major fields and the matching HTS series extruder solutions, providing targeted reference for enterprises in different fields.
4.1 Automotive Field: Lejè, High Temperature Resistance and Wear Resistance
With the development of automotive lightweight and energy-saving and emission-reduction, engineering plastics have become an important material for automotive parts, gradually replacing traditional metal materials. The engineering plastics used in the automotive field mainly include PA, POM, PC, PBT, PPS, elatriye., which are mainly used in engine parts, interior parts, exterior parts and electrical components. The core requirements for extrusion processing are: lejè, high temperature resistance, mete rezistans, dimensional stability and low VOC (konpoze òganik temèt), which require the extruder to have precise temperature control, excellent mixing and dispersing effect and stable production capacity.
For automotive interior parts (such as instrument panels, panno pòt yo, air ducts) made of general engineering plastics (PA6, POM, PC/ABS alloy), the HTS BASIC series extruders can meet the processing needs. Its flexible configuration can adjust the processing parameters according to the performance requirements of interior parts, ensure the smooth surface and dimensional stability of the product, and its low energy consumption and cost can reduce the production cost of automotive parts. For automotive engine parts (such as intake manifolds, cylinder head covers, oil pans) made of high-temperature resistant and wear-resistant engineering plastics (PA66 + GF30, PPS), the HTS PLUS series extruders are more suitable. Its high torque and excellent mixing and dispersing effect can ensure the uniform dispersion of glass fiber, improve the strength and high temperature resistance of the product, and its wear-resistant screw and barrel can adapt to the wear of glass fiber, ensuring long-term stable production. For high-end new energy vehicle parts (such as battery shell, motor insulation parts) made of high-end special engineering plastics (PEEK, PI), the HTS SUPER series extruders are required. Its ultra-high torque, precise temperature control and short residence time can avoid thermal decomposition of high-temperature resistant materials, ensure the insulation performance and corrosion resistance of the product, and meet the strict requirements of new energy vehicles on parts performance.
Etid ka: A large automotive parts manufacturer specializing in new energy vehicle battery parts selected our HTS SUPER series extruders (screw diameter 100mm) to process carbon fiber reinforced PEEK battery shells. The PEEK material has high viscosity and high temperature resistance, and the carbon fiber filling amount reaches 40%, which has extremely high requirements on extrusion equipment. The HTS SUPER series extruders, with their ultra-high torque of 14Nm/cm³ and maximum speed of 1000rpm, generate strong shear force and mixing force, which makes the carbon fiber uniformly dispersed in the PEEK matrix; the precise temperature control system (precision ±1℃) strictly controls the processing temperature at 380-400℃, avoiding thermal decomposition of PEEK; the short residence time (1.5 minit) effectively reduces the material degradation, ensuring the strength and insulation performance of the battery shell. After using the HTS SUPER series extruders, the production efficiency of the enterprise is increased by 40%, the product qualification rate is increased from 88% pou 99%, and the production cost is reduced by 15%, which has won high recognition from the enterprise.
4.2 Electrical and Electronic Field: Electrical Insulation, Flame Retardancy and Dimensional Stability
The electrical and electronic field is one of the earliest and most widely used fields of engineering plastics. Engineering plastics are mainly used in electrical connectors, wiring boards, rle, motè, lyen kab, lamp covers and other components. The core requirements for extrusion processing are: excellent electrical insulation, reta flanm dife, estabilite dimansyon, corrosion resistance and low toxicity, which require the extruder to have precise temperature control, good mixing and dispersing effect and strict quality control capacity.
For general electrical components (such as cable ties, konektè) made of general engineering plastics (PA6, PBT, PC), the HTS BASIC series extruders are suitable. Its flexible configuration can match different die heads to produce components of different shapes and sizes; the precise temperature control ensures the electrical insulation performance of the product, and the low cost can meet the mass production needs of general electrical components. For high-precision electrical components (such as relays, motor windings) made of flame-retardant modified engineering plastics (PBT+GF30+flame retardant, PA66+flame retardant), the HTS PLUS series extruders are preferred. Its high mixing and dispersing effect can ensure the uniform dispersion of flame retardants, avoid local flame retardancy insufficiency, and meet the UL94 V-0 flame retardant standard; the precise dimensional control can ensure the dimensional accuracy of high-precision components, avoiding assembly failure. For high-end electrical components (such as high-temperature resistant connectors, aerospace electrical components) made of special engineering plastics (PPS, PSU, PES), the HTS SUPER series extruders are required. Its ultra-high torque and excellent wear resistance can cope with the high viscosity and high hardness of special engineering plastics, and the precise temperature control and short residence time can ensure the electrical insulation performance and high temperature resistance of the product, meeting the strict requirements of high-end electrical and electronic products.
4.3 Medical Field: Biocompatibility, Sterility and Precision
The medical field has extremely strict requirements on materials, and engineering plastics used in the medical field must have good biocompatibility, sterility, corrosion resistance and dimensional stability, and must not produce toxic and harmful substances. The main engineering plastics used in the medical field include PC, PA, PEEK, PSU, elatriye., which are mainly used in medical containers, katetè medikal, implant medikal, surgical instruments and other products. The core requirements for extrusion processing are: gwo presizyon, no pollution, pèfòmans ki estab, which require the extruder to have high cleanliness, precise temperature control and strict quality control capacity.
For general medical products (such as medical containers, ordinary catheters) made of medical-grade general engineering plastics (medical-grade PC, medical-grade PA), the HTS BASIC series extruders with special cleanliness configuration can meet the requirements. We can customize the screw and barrel with high cleanliness, no dead angle design for the HTS BASIC series, avoid material residue and pollution, and match the sterile feeding and packaging system to ensure the sterility of the product. For high-precision medical products (such as precision catheters, implant medikal) made of medical-grade special engineering plastics (PEEK nan klas medikal, medical-grade PSU), the HTS SUPER series extruders with high-precision configuration are required. Its fully optimized screw structure and precise temperature control can ensure the dimensional accuracy of the product (tolerance ≤±0.01mm), and the clean production environment and no pollution design can meet the biocompatibility requirements of medical products; the cloud control function can realize real-time monitoring and recording of the production process, which is convenient for medical product traceability and meets the GMP (Bon Pratik Faktori) requirements of the medical field.
4.4 Aerospace Field: High Temperature Resistance, Low Weight and High Strength
The aerospace field has extremely high requirements on the performance of materials, and engineering plastics used in the aerospace field must have excellent high temperature resistance, low weight, high strength, corrosion resistance and radiation resistance. The main engineering plastics used in the aerospace field include PEEK, PI, PSU, PES, elatriye., which are mainly used in aerospace components, aircraft interior parts, satellite components and other products. The core requirements for extrusion processing are: ultra-high precision, ultra-high temperature resistance, pèfòmans ki estab, which require the extruder to have the highest level of torque, speed and temperature control capacity.
Due to the extremely strict processing requirements of aerospace-grade engineering plastics, only the HTS SUPER series extruders can meet the demand. Its ultra-high torque transmission device, maximum 1000rpm speed and fully optimized key components can cope with the high viscosity and high temperature resistance of aerospace-grade materials (long-term use temperature up to 300℃); the laser-clad screw and barrel have extremely high wear resistance and corrosion resistance, which can adapt to the processing of high-hardness modifiers (such as carbon fiber, ceramic fiber); the intelligent PLC + cloud touch screen control system can realize precise control of extrusion parameters, and the remote monitoring and predictive maintenance function can ensure the stable operation of equipment in long-term continuous production; the customizable configuration can meet the special processing needs of various aerospace components, ensuring the high performance and high reliability of the product.
4.5 Chemical Field: Corrosion Resistance and Wear Resistance
The chemical field has harsh working environment, and engineering plastics used in the chemical field must have excellent corrosion resistance, mete rezistans, high temperature resistance and pressure resistance. The main engineering plastics used in the chemical field include PPS, PEEK, PVDF (polyvinylidene fluoride), elatriye., which are mainly used in chemical equipment, pipelines, valves, pumps and other products. The core requirements for extrusion processing are: rezistans korozyon, mete rezistans, pèfòmans ki estab, which require the extruder to have excellent wear resistance and corrosion resistance, and stable pressure control capacity.
For chemical pipelines and valves made of general corrosion-resistant engineering plastics (PPS, PVDF), the HTS PLUS series extruders are suitable. Its bimetallic composite screw and barrel have excellent corrosion resistance and wear resistance, which can adapt to the corrosion of chemical media and the wear of materials; the stable pressure control capacity can ensure the uniform wall thickness of pipelines and valves, avoiding leakage caused by uneven wall thickness. For high-pressure chemical equipment and corrosion-resistant components made of high-end corrosion-resistant engineering plastics (PEEK, PI), the HTS SUPER series extruders are required. Its ultra-high torque and stable conveying capacity can cope with the high viscosity of high-end corrosion-resistant materials, and the laser-clad screw and barrel have extremely high corrosion resistance and wear resistance, which can meet the long-term use requirements in harsh chemical environments; the precise temperature control can avoid thermal decomposition of materials, ensuring the corrosion resistance and pressure resistance of the product.
5. Common Problems and Solutions in Engineering Plastics Twin-Screw Extrusion Processing
In the actual twin-screw extrusion processing of engineering plastics, due to the influence of raw materials, paramèt pwosesis, equipment performance and other factors, various problems often occur, which affect the product quality and production efficiency. Anba a, we will summarize the common problems in engineering plastics extrusion processing, analyze their causes, and provide corresponding solutions combined with the characteristics of our HTS series extruders, helping enterprises solve practical processing problems and improve production efficiency.
5.1 Problem 1: Thermal Decomposition and Discoloration of Materials
Symptoms: During the extrusion process, the material appears yellowing, blackening, carbonization and other phenomena, and the final product has discoloration, bul, cracks and other defects, and the mechanical properties are significantly reduced. This problem is mainly caused by the sensitivity of engineering plastics to overheating and hydrolytic degradation.
Causes: 1. The extrusion temperature is too high or the temperature of a certain section of the barrel is too high, resulting in thermal decomposition of the material; 2. The residence time of the material in the extruder is too long, leading to excessive heating and decomposition; 3. The raw materials are not dried thoroughly, and the moisture in the materials causes hydrolytic degradation during high-temperature processing; 4. The screw speed is too low, resulting in insufficient shear force and prolonged residence time; 5. The flow channel of the die head is blocked, resulting in material accumulation and local overheating.
Solisyon: 1. Adjust the extrusion temperature according to the type of engineering plastic, strictly control the temperature of each section of the barrel and die head within the optimal range, and use the precise temperature control function of the HTS series extruders (temperature control precision ±1℃) to avoid local overheating; 2. Increase the screw speed appropriately (within the range suitable for the material) to shorten the residence time of the material. The HTS series extruders can reach a maximum speed of 1000rpm, which can effectively shorten the residence time to 1-3 minit; 3. Strengthen the drying treatment of raw materials, strictly control the moisture content below 0.1%-0.2%, and use the drying device matched with the HTS series extruders to prevent the raw materials from absorbing moisture again during feeding; 4. Check and clean the die head regularly to ensure the smooth flow channel, avoid material accumulation; 5. If the problem persists, adjust the screw element combination, increase the number of conveying elements, and reduce the number of mixing elements to speed up the material conveying and shorten the residence time.
5.2 Problem 2: Uneven Dispersion of Modifiers
Symptoms: The final product has uneven texture, obvious agglomeration of modifiers (such as glass fiber, fib kabòn), and the mechanical properties (fòs, severite, mete rezistans) are uneven, which cannot meet the use requirements. This problem is common in the processing of modified engineering plastics.
Causes: 1. The premixing effect of raw materials is poor, and the modifiers are not uniformly adhered to the surface of the resin; 2. The screw speed is too low, resulting in insufficient shear force and kneading force, and the modifiers cannot be fully broken and dispersed; 3. The combination of screw elements is unreasonable, and the number of mixing elements and shearing elements is insufficient; 4. The extrusion temperature is too low, the material is not fully melted, and the modifiers cannot be uniformly dispersed in the resin matrix; 5. The particle size of the modifier is too large or uneven.
Solisyon: 1. Optimize the premixing process, increase the mixing speed (800-1200rpm) and mixing time (5-10 minit), add an appropriate amount of compatibilizer to improve the compatibility between the modifier and the resin, and use a high-speed mixer matched with the HTS series extruders to ensure uniform premixing; 2. Increase the screw speed appropriately, use the high-speed performance of the HTS series extruders to generate strong shear force and kneading force, and fully break the agglomerates of modifiers; 3. Adjust the combination of screw elements, increase the number of mixing elements and shearing elements, and use the modular screw design of the HTS series extruders to customize the optimal screw combination according to the type of modifier; 4. Properly increase the extrusion temperature to ensure that the material is fully melted, which is conducive to the uniform dispersion of modifiers; 5. Crush and sieve the modifier to ensure that its particle size is uniform (20-40 may) and meets the processing requirements.
5.3 Problem 3: Wear of Screw and Barrel
Symptoms: After a period of use, the extrusion capacity of the extruder decreases, the shear force and mixing effect are reduced, the product quality is unstable, and even the screw and barrel are stuck. This problem is mainly caused by the wear of high-hardness modifiers (such as glass fiber, fib kabòn) on the screw and barrel during the processing of reinforced engineering plastics.
Causes: 1. The screw and barrel are made of materials with poor wear resistance, which cannot resist the wear of high-hardness modifiers; 2. The filling amount of the modifier is too high (≥50%), and the wear is intensified; 3. The particle size of the modifier is too large, which increases the wear on the screw and barrel; 4. The extrusion pressure is too high, which increases the friction between the material and the screw and barrel; 5. The screw and barrel are not maintained regularly, and the material residue accelerates the wear.
Solisyon: 1. Select extruders with high wear resistance, such as HTS PLUS series and HTS SUPER series. Their screws and barrels are made of imported wear-resistant alloy steel and undergo bimetallic composite treatment or laser cladding treatment, with surface hardness ≥65 HRC (HTS PLUS) and ≥70 HRC (HTS SUPER), which can effectively resist the wear of high-hardness modifiers; 2. Control the filling amount of the modifier within a reasonable range. If high filling amount is required, select the HTS SUPER series extruders with better wear resistance; 3. Crush and sieve the modifier to reduce its particle size and reduce wear; 4. Adjust the extrusion parameters to control the extrusion pressure within the optimal range (5-15MPa), avoid excessive pressure; 5. Regularly maintain the screw and barrel, clean the material residue in time, and apply lubricating oil appropriately to reduce friction and extend the service life. Anplis de sa, our professional technical team can provide regular wear detection services for the screw and barrel, and put forward targeted replacement and maintenance suggestions.
5.4 Problem 4: Unstable Product Size and Dimensional Deformation
Symptoms: The size of the extruded product (such as granules, tiyo, dra) is uneven, the shrinkage rate exceeds the standard (＞1.5%), and the product has deformation, warpage and other phenomena, which affects the assembly and use of the product.
Causes: 1. The extrusion temperature is unstable, resulting in uneven melting and plasticization of the material, and uneven shrinkage during cooling; 2. The extrusion speed is unstable, leading to uneven extrusion amount and unstable product size; 3. The cooling speed is uneven, resulting in uneven internal and external stress of the product, leading to deformation; 4. The die head structure is unreasonable, the flow channel is not smooth, and the material flow is uneven; 5. The raw materials have high water absorption, and the moisture causes uneven shrinkage during processing.
Solisyon: 1. Use the precise temperature control system of the HTS series extruders to ensure the stability of the extrusion temperature, and avoid temperature fluctuation; 2. Adjust the feeding speed and screw speed to ensure the stability of the extrusion speed, and use the frequency conversion speed regulation function of the HTS series extruders to realize the synchronous adjustment of feeding and extrusion; 3. Optimize the cooling process, ensure uniform cooling speed, adjust the cooling water temperature (20-30℃) and cooling time (2-5 minit) for strip cooling, and use air cooling or water spray cooling for pipes and sheets to avoid uneven cooling; 4. Check and optimize the die head structure, ensure the smooth flow channel, and adjust the die head temperature to ensure uniform material flow; 5. Strengthen the drying treatment of raw materials, strictly control the moisture content, and reduce the impact of moisture on product shrinkage.
5.5 Problem 5: Low Extrusion Efficiency and High Energy Consumption
Symptoms: The production capacity of the extruder is lower than the design standard, the energy consumption per unit product is high, and the production cost is increased, which affects the economic benefits of the enterprise.
Causes: 1. The screw speed is too low, the conveying capacity is insufficient; 2. The extrusion temperature is too low, the material viscosity is too high, the conveying resistance is increased, and the production capacity is reduced; 3. The combination of screw elements is unreasonable, the conveying efficiency is low; 4. The feeding device is blocked or the feeding speed is insufficient, resulting in insufficient feeding; 5. The screw and barrel are worn, the conveying capacity is reduced, and the energy consumption is increased.
Solisyon: 1. Increase the screw speed appropriately (within the range suitable for the material) to improve the conveying capacity and production efficiency. The HTS series extruders can reach a maximum speed of 1000rpm, which can significantly improve production efficiency; 2. Properly increase the extrusion temperature to reduce the material viscosity, reduce the conveying resistance, and improve the conveying efficiency; 3. Adjust the combination of screw elements, increase the number of conveying elements, optimize the screw lead and compression ratio, and improve the conveying efficiency. The modular screw design of the HTS series extruders can realize the quick adjustment of screw elements; 4. Check and clean the feeding device regularly, ensure the smooth feeding, and adjust the feeding speed to match the screw speed, avoid insufficient feeding; 5. Regularly detect the wear degree of the screw and barrel, replace the worn components in time, and maintain the conveying capacity of the extruder, reducing energy consumption. Anplis de sa, the HTS series extruders adopt an optimized structural design and high-efficiency motor, which can reduce energy consumption by 15%-20% compared with ordinary extruders.
6. Conclusion and Future Development Trend
Jeni plastik, kòm yon materyèl kle wo-pèfòmans, are playing an increasingly important role in global industrial upgrading, and twin-screw extrusion technology is the core support for the high-quality processing of engineering plastics. The performance of extrusion equipment directly determines the quality, efikasite pwodiksyon ak efè aplikasyon jeni pwodwi plastik. Our HTS series twin-screw extruders, including HTS BASIC, HTS PLUS and HTS SUPER, are specially designed for the processing characteristics of engineering plastics (sensitivity to overheating and hydrolytic degradation, high requirements on mixing and dispersing effect, high viscosity), with the advantages of high torque, gwo vitès, kontwòl tanperati egzak, ekselan rezistans mete, wide application range and intelligent control. They can provide targeted processing solutions for different types of engineering plastics and different scales of enterprises, helping enterprises solve processing difficulties, improve product quality and production efficiency, and enhance market competitiveness.
Looking forward to the future, with the continuous upgrading of downstream industries such as automotive lightweight, entèlijans elektrik ak elektwonik, new energy and medical high-endization, the demand for high-performance, functional and environmentally friendly engineering plastics will continue to grow, which will also put forward higher requirements on twin-screw extrusion technology and equipment. The future development trend of engineering plastics twin-screw extruders will be mainly reflected in four aspects:
Premye, intelligence and digitalization. With the development of Industry 4.0, twin-screw extruders will be more integrated with intelligent technologies such as Internet of Things, big data and artificial intelligence. The HTS series extruders will further optimize the cloud control function, realize real-time monitoring, data analysis, predictive maintenance and intelligent adjustment of the entire production process, reduce labor intervention, and improve production efficiency and product consistency. An menm tan an, digital simulation technology will be widely used in the design and debugging of extruders, reducing the research and development cycle and debugging time of equipment.
Dezyèmman, high performance and high efficiency. The demand for high-end engineering plastics (tankou PEEK, PI) will continue to increase, which will promote the continuous upgrading of extruder performance. The future extruders will have higher torque, higher speed and more precise temperature control capacity, and the key components (vis, barik, bwat) will be further optimized to improve wear resistance, corrosion resistance and service life. An menm tan an, the energy consumption of the equipment will be further reduced, reyalize pwodiksyon segondè-efikasite ak enèji-ekonomize.
Twazyèm, personnalisation ak diversification. Diferan jaden aplikasyon ak pwodwi diferan gen kondisyon de pli zan pli pèsonalize pou pwosesis extrusion. Ekstrudeurs nan lavni yo pral adopte yon konsepsyon modilè ki pi fleksib, ki ka byen vit ranplase eleman vis, mouri tèt ak lòt konpozan selon bezwen kliyan, reyalize pwosesis la nan varyete miltip ak ti pakèt. An menm tan an, nou pral bay plis pèsonalize solisyon Customized dapre bezwen yo pwosesis espesyal nan kliyan yo, satisfè demann divès mache yo.
Katriyèm, pwoteksyon anviwònman ak vètizasyon. Avèk ranfòse politik mondyal pwoteksyon anviwònman an, pwoteksyon anviwònman an pral tounen yon direksyon devlopman enpòtan nan ekipman extrusion. The future extruders will adopt more environmentally friendly materials and manufacturing processes, reduce energy consumption and pollutant emissions; an menm tan, they will be more compatible with recyclable engineering plastics and biodegradable engineering plastics, promoting the green development of the engineering plastics industry.
We will always adhere to the concept of technological innovation, focus on the development needs of the engineering plastics industry, continuously invest in research and development, optimize the performance of HTS series extruders, improve after-sales service, and provide more professional, efficient and intelligent twin-screw extrusion solutions for global engineering plastics processing enterprises, helping the high-quality development of the engineering plastics industry.