Thermoplastic Elastomer, abbreviated li TPE lossis TPR, yog cov khoom siv roj hmab niaj hnub uas sib xyaw ua ke thiab ua haujlwm ntawm cov khoom siv roj hmab vulcanized nrog cov txheej txheem ntawm cov yas. Nyob rau hauv chav tsev kub, TPE coj zoo li roj hmab, muab elasticity, softness, thiab kev nplij siab. Ntawm qhov kub siab, nws softens thiab tuaj yeem molded siv cov txheej txheem yas ua, ua rau nws muaj ntau yam hauv kev tsim khoom.
Raws li kev tsim qauv, TPE muaj ob ntu tseem ceeb: ntu roj hmab thiab cov khoom siv (yas) ntu. Cov ntu resin tsim lub cev ntoo khaub lig- txuas cov ntsiab lus los ntawm kev sib cuam tshuam cov rog, thaum cov roj hmab ntu muab elasticity thiab txhua yam muaj zog. Tsis zoo li cov roj hmab ib txwm siv, uas yuav tsum muaj cov tshuaj vulcanization kom ua tiav elasticity, TPE cia siab rau qhov rov qab ntawm lub cev cross - txuas, tso cai rau nws rov ua dua thiab rov ua dua yam tsis muaj kev poob haujlwm.
Kev sib xyaw tshwj xeeb ntawm cov khoom ua rau TPE yog cov khoom siv zoo tshaj plaws rau ntau yam kev siv. Nws muaj cov khoom siv kho tshuab zoo heev, tiv thaiv kev laus, thiab roj tsis kam, zoo ib yam li cov roj hmab vulcanized. Lub caij no, nws tuaj yeem ua tiav siv cov txheej txheem thermoplastic xws li kev txhaj tshuaj molding, extrusion, tshuab moulding, thermoforming, thiab txawm tias kub vuam. Cov kev ua tau zoo no txo lub sij hawm ntau lawm, txo lub zog noj, thiab ua kom yooj yim kev tsim khoom piv rau cov khoom siv roj hmab.
Ib qho txiaj ntsig tseem ceeb ntawm TPE yog kev ruaj khov. Thaum lub sij hawm tsim khoom, ntug scraps thiab runners yuav crushed thiab tag nrho reused, tshem tawm cov khib nyiab thiab txo cov nqi khoom. Qhov no ua rau TPE tsis tsuas yog raug nqi - zoo tab sis kuj yog ib puag ncig tus phooj ywg. Tsis tas li ntawd, TPE cov ntaub ntawv tsis yog - tshuaj lom, muaj kev nyab xeeb rau tib neeg kev sib cuag, thiab muab qhov muag muag, xis nyob nrog qhov pom kev zoo, uas txhim kho cov khoom tsim thiab kev paub txog cov neeg siv khoom.
TPE yog thawj zaug hauv xyoo 1958 nrog cov thermoplastic polyurethane (TPU) tsim los ntawm Bayer. Cov thev naus laus zis tau nthuav dav sai tom qab qhov tshwm sim ntawm styrenic thermoplastic elastomers hauv xyoo 1963. Txij thaum ntawd los, TPE tau hloov zuj zus mus rau hauv cov khoom siv polymer thiab feem ntau hu ua "thib peb ntawm roj hmab," bridging qhov sib txawv ntawm cov pa roj hmab thiab cov ntaub ntawv yas.
Thermoplastic elastomers tshwj xeeb tshaj yog tsim rau kev lag luam uas xav tau ob qho tib si elasticity thiab ua haujlwm yooj yim. Lawv yog siv rau hauv cov khoom siv, cov khoom siv tsheb, cov khoom siv kho mob, cov khoom siv hauv tsev, thiab cov ntawv thov kev lag luam. Thaum TPE softens ntawm qhov kub thiab txias, kev xaiv cov khoom siv ceev faj tuaj yeem ua tau raws li qhov yuav tsum tau siv feem ntau, ua rau nws muaj tswv yim thiab tsim kho tshiab rau kev tsim khoom niaj hnub.