Yam khoom twg zoo dua, PET lossis PP?

Piv nrog cov ntaub ntawv PET thiab PP, PP yuav ua tau zoo dua hauv kev ua haujlwm.
1. Qhov txawv ntawm qhov txhais
PET(Polyethylene terephthalate) lub npe scientific yog polyethylene terephthalate, feem ntau hu ua polyester resin, yog cov khoom siv cob.
PP(polypropylene) lub npe scientific yog polypropylene, uas yog ib tug polymer tsim los ntawm ntxiv polymerization ntawm propylene, thiab yog ib tug thermoplastic hluavtaws cob.
2.Los ntawm cov yam ntxwv ntawm qhov sib txawv
(1) PEB
① PET yog lub mis dawb los yog lub teeb daj uas muaj crystalline polymer nrog lub ntsej muag du thiab ci.
②PET cov khoom muaj kev qaug zog zoo, kev ua haujlwm tsis zoo thiab qhov ruaj khov, tsis tshua muaj hnav thiab siab tawv, khoov lub zog ntawm 200MPa, thiab elastic modulus ntawm 4000MPa.
③ Cov khoom siv PET muaj qhov ua tau zoo heev thiab tsis kub tsis kam ua haujlwm, uas tuaj yeem siv tau ntev hauv qhov kub ntawm 120 ° C, thiab tuaj yeem tiv taus qhov kub ntawm 150 ° C rau kev siv sijhawm luv thiab qis kub ntawm -70 ° C. C.
④ Ethylene glycol siv los tsim PET muaj tus nqi qis thiab kev ua haujlwm siab.
⑤ Cov khoom siv PET tsis muaj tshuaj lom, muaj kev ruaj ntseg zoo tiv thaiv cov tshuaj, thiab tiv taus cov acids tsis muaj zog thiab cov kuab tshuaj organic, tab sis nws tsis tiv taus rau immersion hauv dej kub thiab alkali.
(2) PIB
①PP yog cov khoom siv waxy dawb nrog lub pob tshab thiab lub teeb pom kev zoo. Nws yog hom lightest ntawm feem ntau siv resins.
②PP cov khoom muaj cov khoom siv zoo heev thiab cov cua sov zoo, thiab kev siv qhov kub thiab txias tuaj yeem ncav cuag 110-120 ° C.
③ PP cov ntaub ntawv muaj kev ruaj ntseg zoo heev thiab tsis cuam tshuam nrog cov tshuaj feem ntau tsuas yog cov oxidants muaj zog.
④ PP cov ntaub ntawv muaj qhov kub thiab txias dua thiab lub zog tensile, thiab cov pob tshab ntawm cov yeeb yaj kiab yog siab dua.
⑤ PP cov khoom siv hluav taws xob zoo heev, tab sis nws yooj yim rau lub hnub nyoog thiab muaj kev cuam tshuam tsis zoo ntawm qhov kub thiab txias.
3. Qhov sib txawv ntawm kev siv
PET yog dav siv, xws li spinning rau hauv polyester fiber, uas yog, polyester; raws li cov yas, nws tuaj yeem raug tshuab rau hauv ntau lub fwj; raws li hluav taws xob qhov chaw, bearings, iav, thiab lwm yam.
PP cov khoom siv dav siv hauv kev txhaj tshuajmolding cov khoom, cov yeeb yaj kiab, cov kav dej, daim hlau, fibers, txheej, thiab lwm yam, nrog rau cov khoom siv hauv tsev, chav dej, tshuaj, kev tsim kho, kev lag luam teeb thiab lwm yam.