Qee qhov tseem ceeb tshaj plaws ntawm Polyvinyl Chloride (PVC) yog:
- Ceev:PVC yog ntom heev piv rau feem ntau cov yas (qhov tshwj xeeb lub ntiajteb txawj nqus nyob ib ncig ntawm 1.4)
- Kev lag luam:PVC yog yooj yim muaj thiab pheej yig.
- Hardness:Rigid PVC qib zoo rau hardness thiab durability.
- Lub zog:Rigid PVC muaj zog tensile zoo heev.
Polyvinyl Chloride yog "thermoplastic" (raws li "thermoset") cov khoom, uas yuav tsum tau ua nrog txoj kev yas teb rau cov cua sov. Cov ntaub ntawv thermoplastic ua kua ntawm lawv qhov chaw melting (ib thaj tsam rau PVC ntawm qhov qis heev 100 degrees Celsius thiab siab dua qhov tseem ceeb xws li 260 degrees Celsius nyob ntawm cov additives). Ib qho txiaj ntsig tseem ceeb ntawm cov thermoplastics yog tias lawv tuaj yeem ua kom sov rau lawv qhov chaw melting, txias, thiab rov ua dua dua yam tsis muaj kev puas tsuaj loj. Tsis txhob hlawv, cov thermoplastics zoo li polypropylene liquefy tso cai rau lawv yooj yim txhaj tshuaj molded thiab tom qab ntawd rov siv dua. Los ntawm qhov sib txawv, cov thermoset yas tsuas tuaj yeem ua kom sov ib zaug xwb (feem ntau thaum lub sijhawm txhaj tshuaj molding). Thawj qhov cua sov ua rau cov khoom siv thermoset teeb (zoo ib yam li 2-ntu epoxy), uas ua rau muaj kev hloov pauv tshuaj uas tsis tuaj yeem thim rov qab. Yog tias koj sim ua kom sov lub thermoset yas rau qhov kub siab thib ob, nws tsuas yog hlawv. Cov yam ntxwv no ua rau cov khoom siv thermoset tsis zoo rau kev rov ua dua tshiab.
PVC muaj ntau yam kev siv thiab qhov zoo ntawm ntau qhov kev lag luam hauv ob qho tib si nws cov ntaub ntawv nruj thiab hloov tau. Tshwj xeeb, Rigid PVC muaj qhov ntom ntom rau cov yas, ua rau nws nyuaj heev thiab feem ntau muaj zog heev. Nws kuj tseem muaj thiab pheej yig, uas, nrog rau feem ntau cov yas 'ntev tus yam ntxwv, ua rau nws yooj yim xaiv rau ntau yam kev siv xws li kev tsim kho.
PVC muaj qhov ua tau zoo heev thiab lub teeb yuag, ua rau nws yog cov khoom siv zoo nkauj rau kev tsim kho, kav dej, thiab lwm yam kev lag luam. Tsis tas li ntawd, nws cov ntsiab lus chlorine siab ua rau cov khoom siv hluav taws xob tiv taus, lwm qhov laj thawj vim li cas nws thiaj li tau txais kev nyiam nyob thoob plaws ntau qhov kev lag luam.
Post lub sij hawm: Dec-01-2022