Shanghai Daoqin Plastics Co., Ltd.

TPR and TPE is system thermoplastic property elastomer （TPE） 定义 thermoplastic property elastomer （thermoplastic elastomer, 简记: TPE） is in normal temperature lower tool has add 硫橡胶 property 质（即 elastomer property 质）, in high temperature lower also can deformation polymer/macromolecule material. it can use plastics processing machine 如 injection molding parts molding, extrusion molding, blow molding, calendering molding, T-Die流延 molding and other relatively 传统硫化橡胶 more is fast speed processing methods manufacturing formed product, has light （ density low ）, environmental protection （ can recycling, 燃烧无毒）, use lifespan long （ can relatively 传统橡胶达5~10倍 above ）, processing degree large, products cost low and other advantages. in industry in, by use. TPE has 时候也 by as thermoplastic property 橡胶（Thermoplastic Rubber, TPR）, its 定义而言, is TPE relatively 适当. TPE is elastomer, tool has add 硫橡胶 property 质, 但却不 need add 硫. TPE advantages TPE most large is tool has more versus structure, it soft and hard separation generate high elastic property and crosslinked function, use it processing manufacturing products tool has lower advantages: ① can use generally thermoplastic property molding machine processing, injection molding parts molding, extrusion molding, blow molding, pressure shrink molding, molding and other; ② can use injection molding parts molding machine 硫化, time can 由原 20min left right shrink short to 1min以 inner; ③ can use pressure machine molding 硫化, speed degree fast, time short; ④ production process in generate waste material （逸出 flash/burrs, extrusion waste 胶） and most 终出现 waste product, can 直接返回 again utilizing; ⑤ use TPE旧 product can simple recycled rear again utilizing, decrease/reduce ring 境污染, expand large recycled 源; ⑥不需硫化, high pressure soft tube/pipe production can consumption is 例: is 188MJ／kg, TPE is 144MJ／kg, can energy saving 25％ above; ⑦自补 strong/high property large, formulation large large 简化, make combined agent for polymer effect/influence made large is decrease small, quality property can more easy 掌握. thermoplastic property breakthrough processing process, is industrial new 途径, expand large products application areas. relatively is significantly is in molding, injection shot molding and extrusion molding. TPE classification types type structure formed made method applications hard soft 链段----------------------------------------------------------------- styrene type TPE(TPS)SBS polystyrene (PS) (PS) BR chemical polymerization general purpose SIS polystyrene (PS) (PS) IR chemical polymerization general purpose SEBS polystyrene (PS) (PS) add hydrogen BR chemical polymerization general purpose, engineering SEPS polystyrene (PS) (PS) add hydrogen IR chemical polymerization general purpose, engineering -------------------------------------------------------------------烯烃 type TPETPO polypropylene (PP) (PP) EPDM machine blending general purpose TPV-PP/EPDM polypropylene (PP) (PP) EPDM+硫化 agent machine blending general purpose TPV-PP/NBR polypropylene (PP) (PP) NBR+硫化 agent machine blending general purpose TPV-PP/NR polypropylene (PP) (PP) NR+硫化 agent machine blending general purpose TPV-PP/IIR polypropylene (PP) (PP) IIR+硫化 agent machine blending general purpose ------------------------------------------------------------------- di type TPE TPB(1,2-IR) poly 1,2- butadiene chemical polymerization general purpose TPI(反式1,4-IR) poly 反式1,4-异戊二烯 chemical polymerization general purpose T-NR(反式1,4-NR) poly 反式1,4-异戊二烯 天然 polymerization general purpose TP-NR(modified 顺式1,4-NR) poly 顺式1,4异戊二烯 modified material grafting polymerization general purpose ------------------------------------------------------------------- chlorine ethylene type TPETPVC(HPVC) crystallization polyvinyl chloride (PVC) (PVC) non crystallization PVC polymerization or blending general purpose TPVC(PVC, NBR) polyvinyl chloride (PVC) (PVC) NBR machine blending general purpose TCPE crystallization chlorine polyethylene (PE) (CPE) non crystallization CPE polymerization or blending general purpose -------------------------------------------------------------------氨 ester type TPE(TPU) ester structure polyester or polyester poly add formed general purpose, engineering ------------------------------------------------------------------- ester type TPE(TPEE) ester structure polyether or polyester poly shrink combined engineering --------------------------------------------------------------------酰 amine type TPE(TPAE) amine structure polyether or polyester poly shrink combined engineering -------------------------------------------------------------------- has machine fluorine type TPE(TPF) fluorine resin F橡胶 chemical polymerization general purpose, engineering --------------------------------------------------------------------TPE injection molding parts processing screw speed (rpm), back pressure and screw time screw speed setting make screw can and 时 完 full shrink 回, usually is in mold opening front 2－ 3 秒 types, 以便进行 lower one-time injection. type screw speed degree scope/range is separation 钟50－ 150转. if screw shrink 回 太 fast, but also machine has screw 延迟定时 device, setting time make screw full shrink and mold opening rear time is most small. this will shrink short material material in temperature degree lower time and in machine inner time. increase back pressure increase material material add hot phenomenon. back pressure positive setting scope/range is 50－ 150 psi. mixed combined masterbatch material 时, using/adopting relatively high back pressure to most dispersion 状态. injection speed degree if can can, 应如此 setting injection speed degree control 程序: speed runner system, rear in material material gate 开始流入 mold cavity rear reduce speed degree. this speed degree to parts 90% by 充满, rear again 进一步 reduce speed degree full mold cavity also 不发生工 parts material. injection and pressure if machine can through speed degree control, setting injection pressure make in 约1 to 5秒钟 time inner runner system and mold cavity. will most 初 渡 pressure adjustment to is 充满工 parts mold cavity injection pressure 50%. this will has will injection molding parts 期间充填 and holding pressure stage/phase pressure reduce to most low degree. setting injection amount 时, 应监视缓冲 amount 情况, ensure it in and holding pressure stage/phase can 以维持. from increase pressure to again to holding pressure relatively new equipment is from injection increase pressure (injection stage/phase) to and holding pressure stage/phase provide outer selection. from increase pressure to stage/phase most methods is according to screw control. according to screw make processing can 始终一致 will 一定体积 material material mold cavity. it is parts and 致密化 provide control, has anti parts and 空穴. time is control 渡 另一办 method, recommendation using/adopting. use mold cavity pressure control is high 昂 办 method, is it and in parts mold cavity inner pressure device. requirements to high degree 模塑公差时, using/adopting this process. reduce from increase pressure to and holding pressure stage/phase between pressure, will has control in sleeve/set 顶端处发生滴 material. if injection equipment has and holding pressure stage/phase pressure control 程序, can use reduce runner speed degree and pressure. injection time runner system most time is 0.5－1.5 秒钟. mold cavity again 花1－5秒钟 time. if can can, most good through control injection speed degree control time. holding pressure time setting gate solid front holding pressure time. usually, gate large small for holding pressure time is 一 决定 property factors. gate large, gate solid front holding pressure time long. cooling time cooling time main/primary 取决于 melt temperature degree, parts thick and cooling efficiency. in addition, material material hardness is factors. and very soft product types (肖氏 hardness < 20A) comparison, relatively hard product types (肖氏 hardness > 50A) in injection molding parts mold inner will relatively fast solid. for/regarding in and other hardness SEBS composite/compounding material type parts, if from 两侧进行 cooling, that 么每0.100" thick cooling time will is large 约15 to 20秒. heavy 叠模塑 工 parts will need relatively long cooling time, is it can through relatively small surface has cooling. 每0.100"壁 thick cooling time will is large 约35 to 40秒.