Shanghai Daoqin Plastics Co., Ltd.

ABS acrylonitrile-butadiene-styrene (ABS) copolymer 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 parts 模 process conditions: drying 处理: ABS材 material tool has wet property, requirements in processing front drying 处理. drying conditions is 80~90C lower most less drying 2 small 时. material temperature degree ensure small 于0.1%. temperature degree: 210~280C; temperature degree: 245C. injection molding parts mold temperature degree: 25…70C. （ injection molding parts 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. chemical and material features: 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, 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. 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 parts 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 85C 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. temperature degree: 240~300C; for/regarding features material need ultra- 310C, for/regarding has flame retardant features material need ultra- 270C. injection molding parts mold temperature degree: for/regarding reinforcement type material is 30~40C, for/regarding thin or large 面积元 parts is 80~90C, for/regarding reinforcement type material is 90~100C. increase temperature degree will increase material crystallization degree. control injection molding parts mold temperature degree for PA12 说 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 injection molding parts 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. 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. due to has very good wear resistant loss features, also used for manufacturing bearings. injection molding parts 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: 230~280C, for/regarding reinforcement product types is 250~280C. injection molding parts mold temperature degree: 80~90C. injection molding parts 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 injection molding parts mold temperature degree is 80~90C. for/regarding thin 壁, process/workflow relatively long parts 也建议施 use relatively high injection molding parts mold temperature degree. increase large injection molding parts mold temperature degree can improve/increase parts strong/high degree and rigid degree, reduce tough property. if thick large 于3mm, use 20~40C low temperature injection molding parts mold. for/regarding reinforcement material injection molding parts mold temperature degree large 于80C. 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 凝 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. 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 parts 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 85C hot gas in drying 处理. if wet degree large 于0.2%, also need 进行105C, 12 small true drying. temperature degree: 260~290C. for additives product is 275~280C. temperature degree 应避免 high 于300C. injection molding parts mold temperature degree: 建议80C. injection molding parts 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 injection molding parts 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 凝 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. PBT polybutylene terephthalate (PBT) typical applications scope/range: 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 parts 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 120C,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: 250C. injection molding parts mold temperature degree: for/regarding reinforcement type material is 40~60C. need very good design injection molding parts mold cooling 腔道以 decrease small parts bending. hot amount dispersion 失一定 need fast uniform. injection molding parts 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: 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 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%C） and high temperature deformation temperature degree ratio PET材 material need low. Vicat softening temperature large is 170C. 玻璃化转换 temperature degree （glass trasitio temperature） 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. 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 parts process conditions: drying 处理: PC材 material tool has wet property, processing front drying very important. drying conditions is 100C to 200C, 3~4 small 时. processing front wet degree must small 于0.02%. temperature degree: 260~340C. injection molding parts mold temperature degree: 70~120C. 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 （otched Izod impact stregth） 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 parts 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 parts process. PC/ABS polycarbonate (PC) and acrylonitrile-butadiene-styrene (ABS) copolymer and mixed combined material typical applications scope/range: machine and machine housing/shell 体, electrical appliances equipment, and machine, automotive parts （仪 table/sheet sheet/plate, internal 装修以 and cover/cap ）. injection molding parts process conditions: drying 处理: processing front drying is must. wet degree small 于0.04%, drying conditions is 90~110C, 2~4 small 时. temperature degree: 230~300C. injection molding parts mold temperature degree: 50~100C. 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. 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 parts process conditions: drying 处理: 建议110~135C,约4 small drying 处理. temperature degree: 235~300C. injection molding parts mold temperature degree: 37~93C. 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. PE-HD high density polyethylene (PE) typical applications scope/range: electrical container, container, use tool, cover/cap and other. injection molding parts process conditions: drying: if 存储恰当则无 must drying. temperature degree: 220~260C. for/regarding separation relatively large material, 建议熔化 temperature degree scope/range in 200~250C between. injection molding parts mold temperature degree: 50~95C. 6mm below/following thick parts use relatively high injection molding parts mold temperature degree, 6mm above thick parts use relatively low injection molding parts 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 injection molding parts 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 injection molding parts 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 parts 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. PEI poly ether typical applications scope/range: 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 parts 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 150C, 4 small drying 处理. temperature degree: type type material is 340~400C; reinforcement type type material is 340~415C. injection molding parts mold temperature degree: 107~175C, injection molding parts mold temperature degree is 140C. 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215C. PEI also tool has very low shrinkage rate and good and other direction machine features. 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 and other ）. industrial application （泵 housing/shell 体, device and other ）. injection molding parts process conditions: drying 处理: processing front drying is must, is PET wet property relatively strong/high. drying conditions is 120~165C, 4 small drying 处理. requirements wet degree small 于0.02%. temperature degree: for/regarding non filling type type: 265~280C; for/regarding filling type type: 275~290C. injection molding parts mold temperature degree: 80~120C. 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 165C left right, material crystallization temperature degree scope/range is 120~220C. 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 injection molding parts mold temperature degree, that use non filling PET材 material can obtain transparent products. PETG ethylene glycol modified - polyethylene terephthalate (PET) typical applications scope/range: 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 parts process conditions: drying 处理: processing front drying is must. wet degree must low 于0.04%. drying conditions is 65C, 4 small 时, attention/notes drying temperature degree need ultra- 66C. temperature degree: 220~290C. injection molding parts mold temperature degree: 10~30C, is 15C. 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 88C. PETG injection molding parts process conditions scope/range ratio PET need 广一, tool has transparent, high strength, high property comprehensive features. 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 bearings. due to it also tool has high temperature resistance features, therefore also used for pipeline device parts （ pipeline 阀门, housing/shell 体）, equipment and other. injection molding parts process conditions: drying 处理: if material in drying ring in, usually need drying 处理. temperature degree: homopolymer material is 190~230C; copolymer material is 190~210C. injection molding parts mold temperature degree: 80~105C. is decrease small molding rear shrinkage rate can selection high injection molding parts 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. 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 parts process conditions: drying 处理: if 储存适当则不 need drying 处理. temperature degree: 220~275C, attention/notes need ultra- 275C. injection molding parts mold temperature degree: 40~80C, use 50C. crystallization degree main/primary injection molding parts mold temperature degree 决定. injection pressure: can large to 1800bar. injection speed degree: usually, use high speed injection molding parts can make internal pressure decrease small to most small. if products surface defect, that use relatively high temperature degree lower low speed injection molding parts. 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0C above non 常脆, therefore many 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 （100C）, 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 150C. 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% 玻璃 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. PPE poly ethylene typical applications scope/range: use product （洗碗 machine, machine and other ）, electrical equipment control device housing/shell 体, light 纤联接 device and other. injection molding parts process conditions: drying 处理: in processing front 进行2~4 small 时, 100C drying 处理. temperature degree: 240~320C. injection molding parts mold temperature degree: 60~105C. 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 PA 66 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 PS material is non crystallization property, mixed 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 PS polystyrene (PS) typical applications scope/range: product packaging, use product （餐 tool, pallet and other ）, electrical （ transparent container, light dispersion device, insulation film and other ）. injection molding parts 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: 180~280C. for/regarding flame retardant type material its upper is 250C. injection molding parts mold temperature degree: 40~50C. 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. PVC （ polyvinyl chloride (PVC) ） typical applications scope/range: 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 parts process conditions: drying 处理: usually need drying 处理. temperature degree: 185~205C injection molding parts mold temperature degree: 20~50C 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; 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% styrene - acrylonitrile copolymer typical applications scope/range: electrical （插 base/seat, housing/shell and other ）, day use product （厨房 device 械, plant/unit, electrical machine base/seat, belt/tape box/case and other ）, automotive industrial （车头灯 box/case, light 境, table/sheet and other ）, use product （餐 tool, food tool and other ）, product packaging and other. injection molding parts process conditions: drying 处理: if 储存不适当, SA has 一 吸 wet features. drying conditions is 80C, 2~4 small 时. temperature degree: 200~270C. if processing thick products, can use low lower 限 熔化 temperature degree. injection molding parts mold temperature degree: 40~80C. for/regarding reinforcement type material, injection molding parts mold temperature degree need ultra- 60C. cooling system must very good design, is injection molding parts 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: SA is types hard, transparent material. styrene formed make SA坚 hard, transparent easy processing; acrylonitrile formed make SA tool has chemical stability property and heat stabilized property. SA tool has very strong/high 承受载荷 can force, resistant chemical reaction can force, resistant hot deformation features and stability property. SA in add glass fiber additives can increase strong/high degree and resistant hot deformation can force, decrease small thermal expansion coefficient. SA Vicat softening temperature is 110C. lower deformation temperature degree is 100C. SA shrinkage rate is 0.3~0.7%. PMMA polymethyl methacrylate (PMMA) pressure force has machine 玻璃 – 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 parts process conditions: drying 处理: PMMA tool has wet property therefore processing front drying is must. drying conditions is 90C, 2~4 small 时. temperature degree: 240~270C. injection molding parts mold temperature degree: 35~70C. 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.