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thermoplastic property elastomer 定义 performance application

Date: 2019-11-18 10:03 Views: 4446 Source: Internet

一, 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 injection 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. in addition TPE并 tool has many 介于橡胶 and plastics in 间 特征.

二, and plastics basic property 质

TPE is meanwhile tool has 橡胶( or elastomer ) and plastics property 质 材 material, below/following for 橡胶, plastics basic property 质做一 brief introduction (如图1-1). 包括橡胶( or elastomer ) and plastics polymer/macromolecule material, its table/sheet property material property 质, can force -应变 features 看出. 图1-1 is various polymer/macromolecule material sheet/slice, in by tensile performance force -应变行 is. in 箭头则 table/sheet sheet/slice to tensile and 放松时, force -应变 变化. iron is elongation (应变) very small material, its force -应变 property 质如1 示, is can 恢复原状 完 full elastomer. viscous is full property 体, 如2 示, is full method 回复. polymer/macromolecule material 质则兼 tool elastomer and property property 质, is viscous elastomer 3 行 is, 但橡胶( or elastomer ) relatively plastics more 接近于完 full elastomer. due to more plastics is viscous elastomer, need specific thermoplastic property elastomer and generally plastics difference 并不容 easy, relatively large is thermoplastic property elastomer in normal temperature lower tool has high elongation, high elastic rate, low pressure shrink deformation rate, and low temperature degree and other features. most large difference is separation structure 差异, due to TPE tool has add 硫橡胶 property 质, table/sheet 示TPE必定由橡胶 formed separation (即 soft 质段, soft segment) and plastics formed separation (即 hard 质段, hard segment) 构 formed, soft tool has elastic property, hard 质段则 in normal temperature 时发挥架桥点 generally function, can anti property deformation. temperature degree upper rise 时, hard plastics formed separation melt, as is 架桥点 function, formed is can property deformation, plastics processing molding.

三, TPE材 material types type :

TPE types type very more. upper 述, TPE含 has hard and soft 质段, classification methods usually is effect/influence most large separation 子构造 差异 separation large type, again soft 质段, hard 质段之 separation solid methods different fine separation. can formed soft separation 子包括 below/following 橡胶: poly butadiene (BR), poly 异戊二烯(IR), 天然橡胶(NR), ethylene - propylene 橡胶(EPDM), 丁基橡胶(IIR), poly 异丁烯, polyethylene (PE) - poly 丁烯, non crystallization property polyethylene (PE), polyether, polyester and other. 另一方面, formed hard separation can use below/following plastics: polystyrene (PS), polyethylene (PE), polypropylene (PP), polymerization 1,2 poly butadiene, 反式1,4 poly 异戊二系, polyurethane ester, polyester, poly amine and other. 依TPE主链 upper separation 子构造 差异, can large separation is 如图1-2. TPE types classification method, is 依巨观构造 差异, separation is pure TPE and mixed 掺TPE. pure TPE is separation in, has soft and hard 质段 共价结 combined, in polymerization or shrink polymerization formed polymer/macromolecule polymer; mixed type TPE则 is will as is soft 质段 橡胶 formed separation, and as is hard plastics formed separation, mixed made formed, styrene and chlorine 系TPE is 主流, applications expand large. 四, TPE property can comparison table/sheet 1 is main/primary TPE之 various property can comparison. again will industrial upper commonly used 之TPE key features as 一概括 property 说明:
pa66 plastics raw materials material property
1. TPU( thermoplastic polyurethane (TPU) ): TPU main/primary 由(1) short alcohol and acid ester reaction PU as hard 质段, (√) long alcohol and acid ester reaction PU as soft 质段, 二者构 formed 直链状 more copolymer is TPU. TPU main/primary its soft 质段之 poly alcohol separation large series: polyether and polyester 系, rear can inner fine separation is PTMG, PEG(polyoxyethylene glycol), PPG(polyoxypropylene glycol), ADP(Adipic ester系), PCL(caprolacton系), PC(polycarbonate系) and other, TPU in soft 质段 差异, for material property formed effect/influence lower: excellent - property can - poor resistant strong/high degree polyester 系 〉 polyether 系撕裂 strong/high degree polyester 系 〉 polyether wear resistant consumption property polyester 系 〉 polyether resistant product property polyester 系 〉 polyether resistant property polyester 系 〉 polyether density ADP < PCL < PTMG low temperature features PTMG > PCL > ADP 反发挥 property PTMG > PCL > ADP resistant water property PC > PTMG > PCL > ADP heat resistant aging property PC > PCL > ADP > PTMG oil resistant property ADP > PCL > PTMG PU hard use 二异氰 acid ester has multiple, 但适于TPU hard 质段则 very less. most important 二异氰 acid ester is MDI and TDI. TPU in property can and processing process upper has below/following main features: advantages: √ wear resistant consumption property is type TPE in most large √ tool high strength, high toughness, high transparency features √ resistant fatigue property, resistant property, oil resistant property 佳 √ environmental protection can recycling, can used for medical device disadvantages: ☆ heat resistant property generally ☆ weather resistant (紫 outer 线) property 不足( can add outer 线安定补 strong/high ) ☆ formed product 残留应 force large, easy mold sticking
2. TPO( polyolefin elastomer ): TPO hard is PP or PE and other polyolefin, soft is EPDM( ternary 乙丙胶) and other 橡胶, will 两者良 good mixed TPO. due to TPO and soft or hard polyolefin also is obvious, difficult below/following positive 确定义. usually 以橡胶 formed separation 20% above, bending elastic property rate 690MPa below/following polyolefin material, can is TPO. TPO generally mono pure will polyolefin and 橡胶进行 material property mixed 掺, make 橡胶以 micro fine pellets dispersion polyolefin in formed. use 之橡胶 pellets can is add or already separation add 硫. is use already separation add 硫 橡胶, TPO property relatively good, add degree high, in polyolefin in dispersion poor, make TPO property reduce, 故橡胶 add degree need control. mixed process, meanwhile make 橡胶起 add reaction made formed 之TPO, is TPV(动态 add type TPO). type TPO, polymerization reaction device in, will hard 质段部 separation and soft 质段部 separation 直接以共价链 polymerization 而, type TPO以metallocene( metallocene )触媒 polymerization formed, is M-POE, 因不需 mixed cost easy control polymerization degree and grafting rate, therefore in property can and price upper relatively 传统TPO tool competition force. TPO in property can and processing process upper has below/following main features: advantages: √ specific gravity most small, price low √ resistant 寒/ hot type, resistant acid / alkali property 佳(仅次于TPEE) √ weather resistance, resistant oxygen property, electrical insulation property 佳 √ processing property 佳, easy molding large type products disadvantages: ☆ easy non property solvent agent, 如汽油, aromatic solvent agent 侵蚀 ☆ resistant strong/high degree low ( can filler strong/high ) ☆ pressure shrink deformation degree large ☆ wear resistance and tensile elastic property 差
3. TPV (动态 add polyolefin elastomer ) TPV is use force machine or machine and other mixed combined equipment mixed combined 时, meanwhile make add made formed TPO, soft add 硫橡胶 pellets, can micro fine dispersion hard polyolefin in. TPV can hard and soft 质段之 types type and combined different, has multiple type specifications, most tool table/sheet property is PP-EPDM系, 接 陆续 has PP-NBR, PP-ACM, PP-NR, PP-IIR, PE-EPDM, PE-NR, PA-NBR, PA-ACM, PVC-NBR and other series TPV. PP-EPDM系 use add agent is resin 系, promote agent is chlorine 化锡, is resin 架桥. formed is 数μm 架桥EPDM pellets ( soft 质段), dispersion 于PP基材( hard 质段) in. 橡胶粒径愈 fine, resistant strong/high degree and fracture elongation large; PP amount large, hardness, elastic property rate, elongation 亦随之 increase. TPV in property can and processing process upper has below/following main features: advantages: √ pressure shrink deformation amount is TPE in most low √ machine property relatively TPO佳, hardness relatively TPO low √ oil resistant property, weather resistance and heat resistant property 佳 √ environmental protection, 无毒, can recycling, can used for medical device disadvantages: ☆ wear resistance relatively 橡胶, TPU差 ☆ price relatively TPO high ☆ processing property generally, surface has easy has flow marks ☆无 transparent property
4. TPS( polystyrene (PS) elastomer ): polystyrene (PS) elastomer can separation is large type: polystyrene (PS) and 橡胶( butadiene, 异戊二烯, 丁烯/ ethylene, 丁烯/ propylene )之嵌段 copolymer, and is and polyolefin, can agent (油) material blending made formed blending material. polystyrene (PS) copolymer in, separation hard is PS, soft is poly butadiene or poly 异戊二烯 and other poly 二烯, table/sheet property product has SBS( styrene - butadiene - styrene copolymer ), SIS( styrene -异戊二烯- styrene copolymer ) and will hydrogen 化後而 formed 之SEBS( styrene - ethylene, 丁烯- styrene copolymer ) and SEPS( styrene - ethylene, propylene - styrene copolymer ). TPS is world upper demand amount most large 之TPE, currently already ultra- 60 10,000 tons, main/primary its force --应变 property and add 硫橡胶 non 常接近, processing property excellent, price low 廉, 逐渐取代PVC and 传统橡胶 in footwear materials and other field/area application. TPS application its structure and physical properties has difference, generally styrene content is: 15-40%, property 质会依 styrene content, micro versus and formed, molecular weight, molecular weight distribution and is 否接官 can and other factors different, has very large 变化. SBS and SIS因 separation in tool has di combined, easy oxygen, oxygen, outer effect/influence, SEBS and SEPS则无此顾虑, therefore 以SEBS/SEPS is 基材之 blending material, in engineering material upper has many application, its oil resistant property 不佳. TPS in property can and processing process upper has below/following main features: advantages: √ made formed product material property scope/range 广, easy processing √ relatively other TPE soft/flexible easy tensile, 接近橡胶 and silicon 胶触感, hardness is TPE in most low √ elongation most high, elastic property most good √ can many engineering plastics compatibilizer and modifier √ environmental protection, can recycling, 无毒, low price (SBS系) disadvantages: ☆SBS series, heat resistant, weather resistance can 差 ☆ formed product resistant property, wear resistance, oil resistant property 皆差 ☆ tensile strength relatively PVC差, method high frequency 波接著 ☆ low hardness formed product has easy 出油. ☆SEBS/SEPS系 formed product, easy printing 接著
5. TPEE( polyether ester elastomer ) TPEE separation in hard is polyester, soft is Tg value low polyether or polyester, is more copolymer. TPEE依 separation 子构造之 different can separation is: 1) polyester, polyether type: hard is 芳香系 crystallization property polyester, soft 质段则 is polyether 2) polyester, polyester type: hard is 芳香系 crystallization property polyester, soft 质段则 is aliphatic polyester 3) liquid type TPEE: hard is rigid liquid separation 子, soft is aliphatic polyester. above types TPEE in, most commonly used demand amount most more is polyester, polyether type TPEE, hard 质段以PBT is table/sheet, butanediol and acid ester formed formed, soft polyether 则以PTMG is table/sheet. 因PBT tool heat resistant type, crystallization speed degree large, 而PTMG则 tool low 玻璃移点Tg, types TPEE molding property excellent, has balanced material property and high heat resistant property. as is hot can elastomer, TPEE can its machine can scope/range is high hardness scope/range. in low hardness scope/range, long small (3 below/following ), hard 质段会 solvent understanding in soft in in in 间层, therefore micro versus separation 离不完 full, 也就无 method tool full elastomer machine can, 故TPEE之 low hardness products easy obtain. TPEE in property can and processing process upper has below/following main features: advantages: √ heat resistant property most high, resistant heavy large, elastic property high √反覆 fatigue features excellent property strong/high tough √ low temperature property relatively TPU more 佳 √ oil resistant / resistant product / chemical resistant solvent agent property disadvantages: ☆不 easy obtain low hardness manufacturing ☆ processing conditions relatively narrow, must relatively precision processing machine ☆ price 昂贵
6. TPA( poly amine elastomer ) TPA is poly amine is hard 质段, Tg value low polyether or polyester is soft 质段, formed more copolymer. poly amine formed separation can is nylon 6, 66, 610, 11, 12 and other, nylon 6 or 12占 important separation. soft formed separation is polyether alcohol or polyester alcohol long poly alcohol. effect/influence TPA material property most large, is hard 质段, soft ratio rate and types type. soft increase, its long long, force small. TPA in property can and processing process upper has below/following main features: advantages: √良 good processing molding property ( less material, ejection property 质, 尺按定 property 佳) √ tool nylon strong/high tough property and wear resistant consumption property √ heat resistant property, oil resistant property 佳 √ low temperature resistant impact property disadvantages: ☆橡胶 elastic property 不足 ☆ easy water hydrolysis ☆ price 昂贵 ☆ recycling material easy color