Shanghai Daoqin Plastics Co., Ltd.

 20 types commonly used plastics features Knowledge

1).PC/ABS polycarbonate (PC) and acrylonitrile ‐ butadiene ‐ styrene copolymer and mixed combined material

　　 typical applications scope/range :计算 machine and machine housing/shell 体, electrical appliances equipment, 草坪园艺 machine, automotive parts table/sheet sheet/plate, internal 装修以 and cover/cap ）.

　　 injection molding process conditions : drying 处理: processing front drying is must. wet degree small 于0.04%, drying conditions is 90～110℃, 2～4 small 时. temperature degree: 230～300℃. mold temperature degree: 50～100℃. injection pressure: 取决于塑 parts. injection speed degree: can can high.

　　 chemical and material features PC/ABS tool has PC and ABS两者 comprehensive features. 例如ABS easy processing features and PC excellent machine features and heat stabilized property. ratio rate will effect/influence PC/ABS材 material heat stabilized property. PC/ABS this type of mixed combined material also excellent flow features.

2).PC/PBT polycarbonate (PC) and polybutylene terephthalate (PBT) mixed combined material

　　 typical applications scope/range : gears 箱, automotive 保险杠以 and requirements tool has resistant chemical reaction and corrosion resistant property, heat stabilized property, impact resistant property and stability property product. injection molding process conditions : drying 处理: 建议110～135℃,约4 small drying 处理. temperature degree: 235～300℃. mold temperature degree: 37～93℃. chemical and material features PC/PBT tool has PC and PBT二者 comprehensive features, 例如PC high toughness and stability property and PBT chemical stability property, heat stabilized property and lubricated features and other.

3).PE‐HD high density polyethylene (PE)

　　 typical applications scope/range : electrical container, container, use tool, cover/cap and other.

　　 injection molding process conditions : drying: if 存储恰当则无 must drying. temperature degree: 220～260℃. for/regarding separation relatively large material, 建议熔化 temperature degree scope/range in 200～250℃ between. mold temperature degree: 50～95℃. 6mm below/following thick parts use relatively high mold temperature degree, 6mm above thick parts use relatively low mold temperature degree. parts cooling temperature degree uniform decrease small shrinkage rate 差异. for/regarding most excellent processing cycle time, cooling 腔道直径应不 small 于8mm, and mold surface 距离应 in 1.3d之 inner （ this 里"d" is cooling 腔道 直径）. injection pressure: 700～1050bar. injection speed degree: use high speed injection. runner and gate : runner in 4 to 7.5mm between, runner long degree can can short. can use various type type gate, gate long degree need ultra- 0.75mm. especially suitable for use hot runner mold.

　　 chemical and material features PE‐HD high crystallization degree it high density, resistant force strong/high degree, high temperature temperature degree, viscous property and chemical stability property. PE‐HD ratio PE‐LD has more strong/high resistant property. PE‐HD impact resistant strong/high degree relatively low. PH‐HD features main/primary density and molecular weight distribution control. suitable for injection molding 模 PE‐HD molecular weight distribution very narrow. for/regarding density is 0.91～0.925g/cm3, 我们称之 is type type PE‐HD; for/regarding density is 0.926～0.94g/cm3, is type type PE‐HD; for/regarding density is 0.94～0.965g/cm3, is type type PE‐HD. material flow features very good, MFR is 0.1 to 28 between. molecular weight high, PH‐LD flow features 越差, is has more good impact resistant strong/high degree. PE‐LD is semi crystallization material, molding rear shrinkage rate relatively high, in 1.5% to 4% between. PE‐HD very easy ring force cracking phenomenon. can through use very low flow features material decrease small internal force, from decrease light cracking phenomenon. PE‐HD当 temperature degree high 于60C时 very easy in type solvent agent in solvent understanding, its resistant solvent understanding property ratio PE‐LD also need good 一.

4).PE‐LD low density polyethylene (PE)

　　 typical applications scope/range :碗, 箱柜, pipeline device

　　 injection molding process conditions : drying: generally need temperature degree: 180～280℃ mold temperature degree: 20～40℃ is achieve cooling uniform and relatively is hot, cooling 腔道直径至 less is 8mm, and from cooling to mold surface 距离不 need ultra- cooling 腔道直径 1.5倍. injection pressure: most large can to 1500bar. holding pressure pressure: most large can to 750bar. injection speed degree: use fast speed injection speed degree. runner and gate : can use various type type runner and gate PE especially combined use hot runner mold.

　　 chemical and material features :商业 use PE‐LD材 material density is 0.91～0.94g/cm3. PE‐LD for gas and water tool has property. PE‐LD thermal expansion coefficient very high combined processing long use products. if PE‐LD density in 0.91～0.925g/cm3 between, that its shrinkage rate in 2%～5% between; if density in 0.926～0.94g/cm3 between, that its shrinkage rate in 1.5%～4% between. currently shrinkage rate also need 取决于 injection molding process parameters. PE‐LD in room temperature lower can resistant multiple solvent agent, is 芳香烃 and chlorine solvent agent can make its 膨胀. 同PE‐HD similar, PE‐LD容 easy ring force cracking phenomenon.

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5).PEI

　　 poly ether type application scope : automotive industrial （发动 machine parts temperature degree device, material and gas device and other ）, electrical appliances and electronics equipment （ electrical device, printing electrical sheet/plate, sheet/slice outer housing/shell, anti box/case and other ）, product packaging, machine internal equipment, industry （ outer device 械, tool housing/shell 体, non device 械）.

　　 injection molding process conditions : drying 处理: PEI tool has wet features can 导致材 material degradation. requirements wet degree value small 于0.02%. drying conditions is 150℃, 4 small drying 处理. temperature degree: type type material is 340～400℃; reinforcement type type material is 340～415℃. mold temperature degree: 107～175℃, mold temperature degree is 140℃. injection pressure: 700～1500bar. injection speed degree: use can can high injection speed degree.

　　 chemical and material features PEI tool has very strong/high high temperature stability property, make is non reinforcement type PEI, still tool has very good tough property and strong/high degree. therefore utilizing PEI excellent heat stabilized property can use made as high temperature heat resistant device parts. PEI also has good flame retardant property, resistant chemical reaction and electrical insulation features. 玻璃化转化 temperature degree very high, 达215℃. PEI also tool has very low shrinkage rate and good and other direction machine features.

　　 typical applications scope/range : automotive （仪 table/sheet sheet/plate, tool 舱门, cover/cap, light box/case and other ）, electrical 冰箱, large strong/high degree tool （头发烘 dry machine, device, food processing machine, machine and other ）, electrical machine housing/shell 体, machine 键盘, use 车辆如 high 尔夫球手推车以 and gas 式雪撬车 and other.

　　 injection molding process conditions : drying 处理: ABS材 material tool has wet property , in processing front drying 处理建议 drying conditions , is 80～90℃ lower most less drying 2 small 时. material temperature degree ensure small 于0.1%. temperature degree: 210～280℃; temperature degree: 245℃. mold temperature degree: 25～70℃. mold temperature degree will effect/influence parts light degree, temperature degree relatively low 则导致 light degree relatively low ）. injection pressure: 500～1000bar. injection speed degree: in high speed degree.

6).ABS

　　 is acrylonitrile, butadiene and styrene types chemical mono combined formed. types mono tool has different features: acrylonitrile has high strength, heat stabilized property and chemical stability property; butadiene tool has tough property, impact resistant features; styrene tool has easy processing, high light degree and high strength. from upper 看, ABS is non crystallization property material. in mono polymerization generate tool has versus terpolymer, is styrene ‐ acrylonitrile versus,

　　另一 is poly butadiene dispersion versus. ABS features main/primary 取决于三 types mono ratio rate and versus in separation structure. this can in product design upper tool has very large active property, and generate market upper types different quality ABS材 material. this different quality material provide different features, from in and other to high and other impact resistant property, from low to high light degree and high temperature features and other. ABS材 material tool has ultra- strong/high easy processing property, appearance features, low creep property and excellent dimensional stability and very high impact resistant strong/high degree.

7).PA12

　　 polyamide (PA) 12 or nylon 12 typical applications scope/range : water amount table/sheet and other equipment, cable sleeve/set, machine 械凸轮, sliding machine and bearings and other.

　　 injection molding process conditions : drying 处理: processing front ensure wet degree in 0.1% below/following. if material is in gas in 储存, need in 85℃ hot gas in drying 4～5 small 时. if material is in container in 储存, that 么经 3 small temperature degree balanced can use.

　　熔化 temperature degree: 240～300C; for/regarding features material need ultra- 310C, for/regarding has flame retardant features material need ultra- 270℃.

　　 mold temperature degree: for/regarding reinforcement type material is 30～40C, for/regarding thin or large 面积元 parts is 80～90℃, for/regarding reinforcement type material is 90～100℃. increase temperature degree will increase material crystallization degree. control mold temperature degree for PA12 is very important. injection pressure: most large can to 1000bar（建议 use low holding pressure pressure and high temperature degree ）. injection speed degree: high speed （ for/regarding has additives material more good ）.

　　 runner and gate : for/regarding add additives material, due to material viscous property relatively low, runner 直径应 in 30mm left right. for/regarding reinforcement type material requirements 5～8mm large runner 直径. runner 形状应当 full is 圆形. 注入口应尽 can can short. can use multiple gate. large type parts need use small gate, this is is for parts high pressure or large shrinkage rate. gate thick degree most good and parts thick degree versus and other. if use 潜入式 gate, most small is 0.8mm. hot runner mold very has 效, is requirements temperature degree control very 精确以 anti material in nozzle 处渗漏 or solid. if use hot runner, gate dimensions ratio cold runner need small 一.

　　 chemical and material features PA12 is from butadiene property, semi crystallization ‐ crystallization thermoplastic property material. it features and PA11 versus 似, 但晶体 structure different. PA12 is very good electrical insulation and and its it polyamide (PA) 一样不会因潮 wet effect/influence insulation property can. it has very good impact resistant property machine chemical stability property. PA12 has many in features and reinforcement features 方面 改良 product types. and PA6 and PA66 versus ratio, this material has relatively low melting point and density, tool has non high rate. PA12 for strong/high oxidation property acid resistant can force. PA12 viscous property main/primary 取决于 wet degree, temperature degree and time. it flow property very good. shrinkage rate in 0.5% to 2% between, this main/primary 取决于材 material product types, thick and its it process conditions.

8).PA6 polyamide (PA) 6 or nylon 6

　　 typical applications scope/range : due to has very good machine strong/high degree and rigid degree by used for structure parts. has very good wear resistant loss features, also used for manufacturing bearings.

　　 injection molding process conditions : drying 处理: due to PA6 very easy absorption water separation therefore processing front drying especially need attention/notes. if material is use anti water material packaging supply container maintain 密闭. if wet degree large 于0.2%, in 80C above hot gas in drying 16 small 时. if material already in gas in ultra- 8 small 时, 建议进行105C, 8 small above true dry. temperature degree: 230～280℃, for/regarding reinforcement product types is 250～280℃. mold temperature degree: 80～90℃. mold temperature degree very significantly effect/influence crystallization degree, crystallization degree also effect/influence parts machine features. for/regarding structure parts crystallization degree very important, therefore mold temperature degree is 80～90℃. for/regarding thin 壁, process/workflow relatively long parts 也建议施 use relatively high mold temperature degree. increase large mold temperature degree can improve/increase parts strong/high degree and rigid degree, reduce tough property. if thick large 于3mm, use 20～40℃ low temperature mold. for/regarding reinforcement material mold temperature degree large 于80℃. injection pressure: generally in 750～1250bar between （取决于材 material and product design ）. injection speed degree: high speed （ for reinforcement type material need micro reduce ）.

　　 runner and gate : due to PA6 solid time very short, therefore gate non important. gate 孔径不 need small 于0.5×t（ this 里t is parts thick degree ）. if use hot runner, gate dimensions ratio use runner small 一, is hot runner can 够帮助 retardant material solid. if use 潜入式 gate, gate most small 直径应当 is 0.75mm.

　　 chemical and material features PA6 chemical material features and PA66 very versus 似, however, it melting point relatively low, but also process temperature degree scope/range very wide. it impact resistant property and resistant solvent understanding property ratio PA66 need good ,但吸 wet property more strong/high. is parts many quality features need to wet property effect/influence, therefore use PA6 design product need separation to this 一点. is improve/increase PA6 machine features, add various modifier. 玻璃就 is most Common additives, has is high impact resistance property also add combined formed 橡胶, 如EPDM and SBR and other. for/regarding has additives product, PA6 shrinkage rate in 1% to 1.5% between. add glass fiber additives can make shrinkage rate reduce to 0.3%（但 and process/workflow versus direction also need high 一 ）. molding shrinkage rate main/primary material crystallization degree and wet property effect/influence. shrinkage rate also and parts design, thick and its it process parameters formed 函数关系.

9).PA66 polyamide (PA) 66 or nylon 66

　　 typical applications scope/range :同PA6 versus ratio, PA66 more widely used in automotive industrial, device housing/shell and its it need has impact resistant property and high strength requirements product.

　　 injection molding process conditions : drying 处理: if processing front material is 密封, that 么就没 has necessary drying. however, if container by 打开, that 么建议 in 85℃ hot gas in drying 处理. if wet degree large 于0.2%, also need 进行105℃, 12 small true drying. temperature degree: 260～290℃. for additives product is 275～280℃. temperature degree 应避免 high 于300℃. mold temperature degree: 建议80℃. mold temperature degree will effect/influence crystallization degree, crystallization degree will effect/influence product material features. for/regarding thin parts, if use low 于40C mold temperature degree, parts crystallization degree will time 而变化, is maintain parts stability property, need 进行退火处理. injection pressure: usually in 750～1250bar, 取决于材 material and product design. injection speed degree: high speed （ for/regarding reinforcement type material low 一 ）. runner and gate : due to PA66 solid time very short, therefore gate non important. gate 孔径不 need small 于0.5×t（ this 里t is parts thick degree ）. if use hot runner, gate dimensions ratio use runner small 一, is hot runner can 够帮助 retardant material solid. if use 潜入式 gate, gate most small 直径应当 is 0.75mm.

　　 chemical and material features PA66 in polyamide (PA) material in has relatively high melting point. it is types semi 晶体‐晶体材 material. PA66 in relatively high temperature degree can maintain relatively strong/high strong/high degree and rigid degree. PA66 in molding rear still tool has wet property, its degree main/primary 取决于材 material formed, thick and ring conditions. in product design 时, need 考虑吸 wet property for stability property effect/influence. is improve/increase PA66 machine features, add various modifier. 玻璃就 is most Common additives, has is high impact resistance property also add combined formed 橡胶, 如EPDM and SBR and other. PA66 viscous property relatively low, therefore flow property very good （但不如PA6）. this property can use processing very thin parts. it viscosity for temperature degree very 敏感. PA66 shrinkage rate in 1%～2% between, add glass fiber additives can will shrinkage rate reduce to 0.2%～1%. shrinkage rate in process/workflow direction and and process/workflow direction versus direction upper versus is relatively large. PA66 for many solvent agent tool has resistant solvent property, for acid and its it chlorine agent resistant force relatively low.

10).PBT polybutylene terephthalate (PBT)

　　 typical applications scope/range :家 use device tool （ food processing sheet/slice, true 空吸尘 device parts, electrical 风扇, drying machine housing/shell 体, device and other ）, electrical appliances parts （开关, electrical machine housing/shell, filament box/case, machine 键盘按键 and other ）, automotive industrial （ dispersion hot device 格窗, 车身嵌 sheet/plate, cover/cap, 门窗部 parts and other ）.

　　 injection molding process conditions : drying 处理: this type of material in high temperature lower very easy hydrolysis, therefore processing front drying is very important. in gas in drying conditions is 120℃, 6～8 small 时, or 者150C, 2～4 small 时. wet degree must small 于0.03%. if use wet drying device drying, conditions is 150C, 2.5 small 时.熔化 temperature degree: 225～275C, temperature degree: 250℃. mold temperature degree: for/regarding reinforcement type material is 40～60℃. need very good design mold cooling 腔道以 decrease small parts bending. hot amount dispersion 失一定 need fast uniform. mold cooling 腔道 直径 is 12mm. injection pressure: in and other （ most large to 1500bar）. injection speed degree: use can can fast injection speed degree （因 is PBT solid very fast ）. runner and gate :建议 use runner increase pressure 传递（ experience 公式: runner 直径=塑 parts thick degree +1.5mm）. can use various type gate. can use hot runner, need attention/notes anti material and degradation. gate 直径应该 in 0.8～1.0*t between, this 里t is parts thick degree. if is 潜入式 gate, most small is 0.75mm.

　　 chemical and material features :

PBT is most tough engineering thermoplastic material 之一, it is semi crystallization material, has non good chemical stability property, machine strong/high degree, electrical insulation features and heat stabilized property. this material in very ring conditions lower has very good stability property. PBT吸 wet features very low. non reinforcement type PBT force strong/high degree is 50MPa, additives type PBT张 force strong/high degree is 170MPa. additives more will 导致材 material 变脆. PBT; crystallization very speed, this will 导致因 cooling non-uniform formed bending deformation. for/regarding has additives type type material, process/workflow direction shrinkage rate can decrease small, and process/workflow direction shrinkage rate basic upper and 普通材 material has difference. generally material shrinkage rate in 1.5%～2.8% between. 含30%玻璃 additives material shrinkage 0.3%～1.6% between. melting point （225℃） and high temperature deformation temperature degree ratio PET材 material need low. Vicat softening temperature large is 170℃. 玻璃化转换 temperature degree （glasstrasitiotemperature） in 22C to 43C between. due to PBT crystallization speed degree very high, therefore it viscous property very low, parts processing cycle time generally relatively low.

11).PC polycarbonate (PC)

　　 typical applications scope/range : electrical and equipment （计算 machine parts, connectors and other ）, device tool （ food processing machine, electrical 冰箱抽屉 and other ）, 交通运输 industry （车辆 front rear 灯, table/sheet sheet/plate and other ）.

　　 injection molding process conditions : drying 处理: PC材 material tool has wet property, processing front drying very important. drying conditions is 100℃ to 200℃, 3～4 small 时. processing front wet degree must small 于0.02%. temperature degree: 260～340℃. mold temperature degree: 70～120℃. injection pressure: can can use high injection pressure. injection speed degree: for/regarding relatively small gate use low speed injection, for its it type type gate use high speed injection.

　　 chemical and material features PC is types non engineering material, tool has especially good impact resistant strong/high degree, heat stabilized property, gloss degree, made fine features, flame retardant features and resistant property. PC 缺口伊估德 impact strong/high degree （otchedIzodimpactstregth） non high, and shrinkage rate very low, generally is 0.1%～0.2%. PC has very good machine features, flow features relatively 差, therefore this type of material injection molding process relatively difficult. in selection types quality PC材 material 时, need product most 终期望 is 基准. if parts requirements has relatively high impact resistant property, that use low flow rate PC材 material; 反之, can use high flow rate PC材 material, this can optimization injection molding process.

　　 polycarbonate (PC) is separation 子主链 in has -[O‐R‐O‐CO]-链节 thermoplastic property resin, separation structure in belt/tape ester different can separation is aliphatic, ring 族, 脂肪一 aromatic type, its in tool has use value is aromatic polycarbonate (PC), di 酚A type polycarbonate (PC) is most important, molecular weight usually is 3‐10万. polycarbonate (PC), 英文名Polycarbonate,简称PC.

PC is types type, 无臭, 无毒, high degree transparent color or micro color thermoplastic property engineering plastics, tool has excellent material mechanical properties, especially is resistant impact property excellent, tensile strength, flexural strength, pressure shrink strong/high degree high; creep property small, dimensions stability; tool has good heat resistant property and low temperature resistance property, in relatively wide temperature degree scope/range inner tool has stability force property can, dimensional stability, electrical property can and flame retardant property, can in ‐60~120℃ lower long use; obvious melting point, in 220‐230℃呈熔 melt 状态; due to separation rigid property large, resin melt viscosity large; water absorption small, shrinkage rate small, dimensions degree high, dimensional stability good, film gas property small; self-extinguishing property material; for light stabilization, resistant outer light, weather resistance good; oil resistant, resistant acid, resistant strong/high alkali, oxidation property acid and amine, ketone type, solvent chlorine type and aromatic solvent agent, long in water in easy hydrolysis and cracking, disadvantages is resistant fatigue strong/high degree 差, easy generate force cracking, resistant solvent agent property 差, wear resistance 欠佳.

PC can injection molding, extrusion, pressure, blow molding, hot molding, printing, bonding, coating and machine processing, most important processing methods is injection molding. molding front must drying, water separation content low 于0.02%, micro amount water in high temperature lower processing make products generate color 泽, silver streaks and bubbles, PC in room temperature lower tool has versus large strong/high high elastic can force. impact tough property high, therefore can cold pressure, cold 拉, cold pressure and other cold molding processing.

extrusion use PC molecular weight large 于3万, need using/adopting pressure shrink type screw, long ratio 1: 18~24, pressure shrink ratio 1: 2.5, can using/adopting extrusion blow molding, 注‐吹, 注‐拉‐吹 method molding high quality, high transparency bottle 子.

PC alloy types type more, 改进PC melt viscosity large （ processing property ） and products easy force cracking and other defect, PC and different polymer formed alloy or blending material, improve/increase material property can. specific has PC/ABS alloy, PC/ASA alloy, PC/PBT alloy, PC/PET alloy, PC/PET/ elastomer blending material, PC/MBS blending material, PC/PTFE alloy, PC/PA alloy and other, has types material property can advantages, reduce cost, 如PC/ABS alloy in, PC main/primary high heat resistant property, relatively good tough property and impact strong/high degree, high strength, flame retardant property, ABS则 can can molding property, table/sheet quality, reduce density. PC large application areas is assembly 业, automotive industrial and electronics, electrical appliances industrial, its also has industrial machine parts, light 盘, packaging, machine and other office equipment, medical and 保健, film, and anti device and other.

PC can used as 门窗玻璃, PC laminate used for 银行, make 馆, and 公共场 anti 护窗, used for machine 舱罩, lighting equipment, industrial safety sheet/plate and anti elastic 玻璃. PC sheet/plate can various 标牌, 如汽油泵 table/sheet 盘, automotive table/sheet sheet/plate, and 露天商业标牌, sliding device, PC resin used for automotive versus system, table/sheet system and inner decoration system, used as front lamp covers, belt/tape add strong/high automotive front rear sheet/plate, light frame, frame sleeve/set, as sleeve/set, retardant sheet/plate, PC by application used as box/case, base/seat, and sleeve/set tube/pipe, sheet/slice, electrical 视转换 plant/unit, electrical 话线路支架 lower cable parts, electrical box/case, electrical machine, electrical parts, electrical appliances outer housing/shell, PC can low parts, used for use electrical appliances 马达, true 空吸尘 device, device, machine, 烤面包 machine, force tool 手柄, various gears, 蜗轮, sleeve/set, 导规, inner 搁架. PC is light 盘储存介质理想 材 material. PC bottle （ container ） transparent, weight light, impact resistant property good, resistant high temperature and solvent liquid 洗涤, as is can recycling utilizing bottle （ container ）. PC and PC alloy can 做计算 machine 架, outer housing/shell and machine, printing machine parts. modified PC resistant high can 辐射杀菌, resistant and 烘烤消毒, can used for 采血标本 device tool, liquid oxygen device, outer 科手术 device 械, 肾透析 device and other, PC can helmet and safety 帽, anti 护面罩, and 运动护眼罩. PC film used for printing table/sheet, packaging, film toward device.

12).PET polyethylene terephthalate (PET)

　　 typical applications scope/range : automotive industrial （ structure device parts light box/case, electrical parts 如车头灯反 light and other ）, electrical appliances parts （马达 housing/shell 体, electrical device, electrical appliances, 开关, micro internal device parts ）. industrial application （泵 housing/shell 体, device and other ）.

　　 injection molding process conditions : drying 处理: processing front drying is must, is PET wet property relatively strong/high. drying conditions is 120～165℃, 4 small drying 处理. requirements wet degree small 于0.02%. temperature degree: for/regarding non filling type type: 265～280℃; for/regarding filling type type: 275～290℃. mold temperature degree: 80～120℃. injection pressure: 300～1300bar. injection speed degree: in 不导致脆化 front lower can use relatively high injection speed degree. runner and gate : can use has type type gate. gate dimensions is parts thick degree 50～100%.

　　 chemical and material features PET 玻璃化转化 temperature degree in 165℃ left right, material crystallization temperature degree scope/range is 120～220℃. PET in high temperature lower has very strong/high wet property. for/regarding glass fiber reinforcement type PET材 material 说, in high temperature lower also non easy bending 形变. can through add crystallization reinforcement agent improve/increase material crystallization degree. use PET processing transparent products tool has gloss degree and hot temperature degree. can toward PET in add and other additives make bending deformation decrease small to most small. if use relatively low mold temperature degree, that use non filling PET材 material can obtain transparent products.

13).PETG ethylene glycol modified ‐ polyethylene terephthalate (PET)

　　 typical applications scope/range :医药 equipment （试 tube/pipe, agent bottle and other ）, toys, device, light outer 罩, anti 护面罩, 冰箱保鲜盘 and other.

　　 injection molding process conditions : drying 处理: processing front drying is must. wet degree must low 于0.04%. drying conditions is 65℃, 4 small 时, attention/notes drying temperature degree need ultra- 66℃. temperature degree: 220~290C. mold temperature degree: 10～30℃, is 15℃. injection pressure: 300～1300bar. injection speed degree: in 不导致脆化 front lower can use relatively high injection speed degree.

　　 chemical and material features PETG is transparent, non 晶体材 material. 玻璃化转化 temperature degree is 88℃. PETG injection molding process conditions scope/range ratio PET need 广一, tool has transparent, high strength, high property comprehensive features.

14).PMMA polymethyl methacrylate (PMMA)

　　 typical applications scope/range : automotive industrial （信号灯 equipment, table/sheet and other ）, industry （储血 container and other ）, industrial application （影碟, light dispersion device ), day use product （饮 material 杯, tool and other ）.

　　 injection molding process conditions : drying 处理: PMMA tool has wet property therefore processing front drying is must. drying conditions is 90℃, 2～4 small 时. temperature degree: 240～270℃. mold temperature degree: 35～70℃. injection speed degree: in and other

　　 chemical and material features PMMA tool has excellent optical features and resistant gas 侯变化 features. light property high 达92%. PMMA products tool has very low di 折射, especially combined made as and other. PMMA tool has room temperature creep features. negative add large, time growth, can 导致应 force cracking phenomenon. PMMA tool has relatively good impact resistant features.

15).POM polyoxymethylene (POM)

　　 typical applications scope/range POM tool has very low friction coefficient and very good stability property, especially combined made as gears and 轴承. due to it also tool has high temperature resistance features, therefore also used for pipeline device parts （阀门, housing/shell 体）, equipment and other.

　　 injection molding process conditions : drying 处理: if material in drying ring in, usually need drying 处理. temperature degree: homopolymer material is 190～230℃; copolymer material is 190～210℃. mold temperature degree: 80～105℃. is decrease small molding rear shrinkage rate can selection high mold temperature degree. injection pressure: 700~1200bar. injection speed degree: in and other or high injection speed degree. runner and gate : can use type type gate. if use 隧道形 gate, most good use relatively short type type. for/regarding homopolymer material use hot runner. for/regarding copolymer material can use internal hot runner can use external hot runner.

　　 chemical and material features POM is types tough has elastic property material, make in low temperature lower still has very good resistant creep features, stability property and impact resistant features. POM既 has homopolymer material has copolymer material. homopolymer material tool has very good strong/high degree, resistant fatigue strong/high degree, easy processing. copolymer material has very good heat stabilized property, chemical stability property and easy processing. homopolymer material also is copolymer material, is crystallization property material and easy absorption water separation. POM high crystallization degree it has versus high shrinkage rate, can high to 2%～3.5%. for/regarding various different reinforcement type material has different shrinkage rate.

16).PP polypropylene (PP)

　　 typical applications scope/range : automotive industrial （ main/primary use metal additives PP: sheet/plate, tube/pipe, and other ）, device 械（洗碗 machine 门衬垫, drying machine tube/pipe, machine frame and machine cover/cap, 冰箱门衬垫 and other ）, day use product （草坪 and equipment 如剪草 machine and water device and other ）.

　　 injection molding process conditions : drying 处理: if 储存适当则不 need drying 处理. temperature degree: 220～275℃, attention/notes need ultra- 275℃. mold temperature degree: 40～80℃, use 50℃. crystallization degree main/primary mold temperature degree 决定. injection pressure: can large to 1800bar. injection speed degree: usually, use high speed injection molding can make internal pressure decrease small to most small. if products surface defect, that use relatively high temperature degree lower low speed injection molding. runner and gate : for/regarding cold runner, type runner scope/range is 4～7mm. use is 圆形 注入口 and runner. has type type gate can use. type gate scope/range is 1～1.5mm, can use small to 0.7mm gate. for/regarding gate, most small gate deep degree is thick semi; most small gate wide degree less is thick 两倍. PP材 material full can use hot runner system.

　　 chemical and material features PP is types semi crystallization property material. it ratio PE need more hard and has more high melting point. due to homopolymer type PP temperature degree high 于0℃ above non 常脆, therefore many 商业 PP材 material is add 入1～4% ethylene random copolymer or more high ratio rate ethylene content 钳段式 copolymer. copolymer type PP材 material has relatively low hot temperature degree (100℃), low transparent degree, low gloss degree, low rigid property, is has has more strong/high impact resistant strong/high degree. PP strong/high degree ethylene content increase increase large. PP Vicat softening temperature is 150℃. due to crystallization degree relatively high, this type of material surface rigid degree and resistant features very good. PP不存 in ring force cracking issues. usually, using/adopting add glass fiber, metal additives or thermoplastic methods for PP进行 modified. PP flow rate MFR scope/range in 1～40. low MFR PP材 material impact resistant features relatively good 但延展 strong/high degree relatively low. for/regarding same MFR material, copolymer type strong/high degree ratio homopolymer type need high. due to crystallization, PP shrinkage rate versus high, generally is 1.8～2.5%. and shrinkage rate direction uniform property ratio PE‐HD and other material need good more. add 入30% additives can make shrinkage rate drop to 0.7%. homopolymer type and copolymer type PP材 material tool has excellent resistant wet property, resistant acid alkali property, resistant solvent understanding property. however, it for 芳香烃（如苯） solvent agent, chlorine 化烃（四 chlorine carbon ） solvent agent and other has resistant force. PP也不象PE that in high temperature lower still tool has resistant oxidation property.

17).PPE poly ethylene

　　 typical applications scope/range :庭 use product machine, machine and other electrical equipment control device housing/shell 体, light 纤联接 device and other.

　　 injection molding process conditions : drying 处理: in processing front 进行2～4 small 时, 100℃ drying 处理. temperature degree: 240～320℃. mold temperature degree: 60～105℃. injection pressure: 600～1500bar. runner and gate : can use has type type gate. especially combined use gate and gate.

　　 chemical and material features : usually, upper provide PPE or PPO材 material generally mixed its it thermoplastic type material 例如PS, PA and other. this mixed combined material generally still is PPE or PPO. mixed combined type PPE or PPO ratio pure 净 材 material has good more processing features. features 变化依赖于 mixed combined material 如PPO and PS ratio rate. mixed 入 PA66 mixed combined material in high temperature lower tool has more strong/high chemical stability property. this type of material wet property very small, its products tool has excellent 良 几何 stability property. mixed 入 PS material is non crystallization property, mixed 入 PA material is crystallization property. add glass fiber additives can make shrinkage rate decrease small to 0.2%. this type of material also tool has excellent electrical insulation features and very low thermal expansion coefficient. its property 取决于材 material in mixed combined material ratio rate, PPO ratio rate increase large will 导致黏 property increase.

18).PS polystyrene (PS)

　　 typical applications scope/range : product packaging use product tool, pallet and other, electrical ( transparent container, light dispersion device, insulation film and other ）.

　　 injection molding process conditions : drying 处理: remove non 储存不当, usually need drying 处理. if need drying, drying conditions is 80C, 2～3 small 时. temperature degree: 180～280℃. for/regarding flame retardant type material its upper is 250℃. mold temperature degree: 40～50℃. injection pressure: 200～600bar. injection speed degree: use fast speed injection speed degree. runner and gate : can use has type type gate.

　　 chemical and material features : large more 数商业 use PS都 is transparent, non 晶体材 material. PS tool has non good stability property, heat stabilized property, optical features, electrical insulation features and very micro small wet toward. it can resistant water, dilute 释 无 machine acid, can by strong/high oxidation acid concentrated acid 腐蚀, and can in has machine solvent agent in deformation. type shrinkage rate in 0.4～0.7% between.

19).PVC（ polyvinyl chloride (PVC) ）

　　 typical applications scope/range :供 water pipeline, use pipeline, 房屋墙 sheet/plate, use machine housing/shell 体, electronics product packaging, medical devices, food packaging and other.

　　 injection molding process conditions : drying 处理: usually need drying 处理. temperature degree: 185～205℃. mold temperature degree: 20～50℃ injection pressure: can large to 1500bar holding pressure pressure: can large to 1000bar injection speed degree: is 避免材 material degradation, generally need use versus injection speed degree. runner and gate : has gate can use. if processing relatively small parts, most good use type gate or 潜入式 gate; for/regarding relatively thick parts, most good use gate. type gate or 潜入式 gate most small 直径应 is 1mm; 扇形. gate thick degree can small 于1mm.

　　 chemical and material features : rigid property PVC is use most plastics material 之一. PVC材 material is types non crystallization property material. PVC材 material in use in add stabilizer, lubricant, processing agent, color material, impact resistant agent and its it additives. PVC材 material tool has easy property, high strength, resistant gas 侯变化 property and excellent 良 几何 stability property. PVC for oxidation agent, also agent and strong/high acid has very strong/high resistant force. however it can by concentrated oxidation acid concentrated acid, concentrated acid and suitable and 芳香烃, chlorine 化烃接触 场 combined. PVC in processing 时熔化 temperature degree is non important process parameters, if parameters will 导致材 material separation understanding issues. PVC flow features versus 当差, its process scope/range very narrow. especially is large molecular weight PVC材 material more difficult processing （ this type of material usually need add lubricant improvement flow features ）, therefore usually use is small molecular weight PVC材 material. PVC shrinkage rate versus low, generally is 0.2～0.6%.

20).AS(SA,SAN) acrylonitrile ‐ styrene copolymer transparent large force 胶

　　 typical applications scope/range : electrical base/seat, housing/shell and other, day use product (厨房 device 械, plant/unit, electrical machine base/seat, belt/tape box/case ,冰箱 inner 格, 旋钮, parts, material, tool and other ), automotive industrial （车头灯 box/case, light 境, table/sheet and other ）, use product （餐 tool, food tool, pallet type, 杯, tool, and other ）, product packaging, table/sheet 镜, packaging box/case and other. used for made as oil resistant, heat resistant, chemical resistant product industrial products, and table/sheet sheet/plate, table/sheet frame, housing/shell, battery box/case, box/case, multiple and and other.

　　 injection molding process conditions : drying 处理: if 储存不适当, AS has 一 吸 wet features. drying conditions is 80℃, 2～4 small 时. temperature degree: 200～270℃. if processing thick products, can use low lower 限 熔化 temperature degree. mold temperature degree: 40～80℃. for/regarding reinforcement type material, mold temperature degree need ultra- 60℃. cooling system must very good design, is mold temperature degree will effect/influence products appearance, shrinkage rate and bending. injection pressure: 350～1300bar. injection speed degree: use high speed injection. runner and gate : has gate can use. gate dimensions must very 恰当, 以避免 generate strip/profile 纹, and 空隙.

　　 chemical and material features :AS is propylene 晴(A), styrene (S) copolymer, resistant gas property in and other, high wet degree ring effect/influence, can resistant, generally property 油脂, agent and light degree 酒精, fatigue resistance relatively 差, easy can force cracking, material transparent degree high , flow property good 于ABS. AS is types hard, transparent material. styrene formed make AS坚 hard, transparent easy processing; acrylonitrile formed make AS tool has chemical stability property and heat stabilized property. AS tool has very strong/high 承受载荷 can force, resistant chemical reaction can force, resistant hot deformation features and stability property. AS in add glass fiber additives can increase strong/high degree and resistant hot deformation can force, decrease small thermal expansion coefficient. AS Vicat softening temperature is 110℃. lower deformation temperature degree is 100℃. AS shrinkage rate is 0.3～0.7%.