Los ntawm txoj kev xav:
PC (Polycarbonate): Qhov no yog cov yas tsis muaj xim, pob tshab uas yog qhov zoo nkauj thiab du. Vim nws tsis muaj tshuaj lom thiab tsis muaj ntxhiab, nrog rau nws zoo heev UV-thaiv thiab ya raws cov khoom, PC muaj qhov kub thiab txias. Nws tseem tsis tau tawg ntawm -180 ° C thiab tuaj yeem siv tau ntev ntawm 130 ° C, ua rau nws yog ib qho khoom zoo rau ntim khoom noj.
PET (Polyethylene Terephthalate) : Qhov no yog cov khoom siv crystalline heev, tsis muaj xim, thiab pob tshab uas yog tawv heev. Nws muaj lub ntsej muag zoo li iav, tsis muaj ntxhiab, tsis qab, thiab tsis muaj tshuaj lom. Nws yog flammable, ua ib tug daj nplaim nrog ib tug xiav ntug thaum hlawv, thiab muaj zoo gas barrier zog.
Los ntawm kev xav ntawm cov yam ntxwv thiab kev siv:
PC: Nws muaj kev cuam tshuam zoo heev thiab yooj yim rau pwm, tso cai rau nws los tsim rau hauv lub raj mis, hub, thiab ntau lub thawv ntim rau ntim cov kua xws li dej haus, cawv, thiab mis nyuj. Lub ntsiab drawback ntawm PC yog nws susceptibility to stress cracking. Txhawm rau txo qhov no thaum lub sijhawm tsim khoom, cov khoom siv purity siab raug xaiv, thiab ntau yam kev ua haujlwm raug tswj nruj heev. Tsis tas li ntawd, siv cov resins uas tsis tshua muaj kev ntxhov siab, xws li cov khoom me me ntawm polyolefins, nylon, los yog polyester rau melting blending, tuaj yeem txhim kho nws txoj kev tiv thaiv kev ntxhov siab thiab kev nqus dej.
PET: Nws muaj cov coefficient tsawg ntawm kev nthuav dav thiab qis molding shrinkage tus nqi tsuas yog 0.2%, uas yog ib feem kaum ntawm polyolefins thiab qis dua PVC thiab nylon, uas ua rau qhov ntev ruaj khov rau cov khoom. Nws lub zog txhua yam yog suav tias yog qhov zoo tshaj plaws, nrog cov khoom nthuav dav zoo ib yam li txhuas. Lub zog tensile ntawm nws cov yeeb yaj kiab yog cuaj npaug ntawm polyethylene thiab peb zaug ntawm polycarbonate thiab nylon, thaum nws lub zog cuam tshuam yog peb mus rau tsib npaug ntawm cov qauv yeeb yaj kiab. Tsis tas li ntawd, nws cov yeeb yaj kiab muaj qhov cuam tshuam ntawm noo noo thiab aroma retention zog. Txawm li cas los xij, txawm tias cov txiaj ntsig zoo li no, cov yeeb yaj kiab polyester kuj tseem kim, nyuaj rau kev kub hnyiab, thiab nquag siv hluav taws xob zoo li qub, uas yog vim li cas lawv tsis tshua siv ib leeg; lawv feem ntau ua ke nrog cov resins uas muaj cua sov sealability zoo dua los tsim cov yeeb yaj kiab sib xyaw.
Yog li ntawd, PET lub raj mis tsim los siv cov txheej txheem biaxial stretching tshuab moulding tuaj yeem siv tag nrho cov yam ntxwv ntawm PET, muab cov pob tshab zoo, siab gloss, thiab zoo li iav zoo li, ua rau lawv lub raj mis zoo tshaj plaws los hloov lub raj mis.
Post lub sij hawm: Nov-04-2024