Dab tsi yog cov khoom siv PVC

PVC yog polyvinyl chloride, uas yog polymerized los ntawm vinyl chloride monomer nyob rau hauv qhov kev txiav txim ntawm peroxide, azo tebchaw thiab lwm yam pib, los yog nyob rau hauv qhov kev txiav txim ntawm lub teeb thiab kub raws li lub dawb radical polymerization mechanism.PVC yog ib qho ntawm cov khoom siv dav dav hauv ntiaj teb, uas yog siv dav hauv ntau yam lag luam.

Dab tsi yog cov khoom siv PVC?PVC yog cov khoom siv ntau heev hauv lub neej.Dab tsi yog cov khoom siv PVC?Cia peb saib hnub no.[xov xwm ntawm PVC] PVC yog polyvinyl chloride tiag tiag, uas yog ib tug polymer polymerized los ntawm vinyl chloride monomer nrog peroxide, azo compound thiab lwm yam pib, los yog nyob rau hauv qhov kev txiav txim ntawm lub teeb thiab kub raws li dawb radical polymerization mechanism. .

[Cov yam ntxwv ntawm PVC]: PVC yog cov hmoov dawb nrog cov qauv amorphous, thiab cov iav hloov pauv kub yog 77 ~ 90 ℃.Kev hloov iav yog ib lub tswv yim nyuaj.Rau PVC hmoov, iav hloov yog tias nyob rau hauv qhov kub thiab txias, PVC yuav hloov los ntawm cov hmoov dawb mus rau lub xeev iav.Lub khob iav PVC yuav pib decompose ntawm li 170 ℃.Tsis zoo stability rau lub teeb thiab cua sov, yooj yim rau decompose thiab tsim hydrogen chloride.
[Kev ua phem ntawm PVC].Los ntawm cov yam ntxwv ntawm PVC, peb tuaj yeem pom tias PVC tsis tuaj yeem siv ib leeg.Hauv kev siv cov tswv yim, stabilizers yuav tsum tau ntxiv los txhim kho kev ruaj ntseg rau cov cua sov thiab lub teeb.Peb yuav tsum xyuam xim tshwj xeeb ntawm no.Xyoo 2017, cov npe ntawm cov carcinogens luam tawm los ntawm lub koom haum thoob ntiaj teb rau kev tshawb fawb txog kev mob qog noj ntshav ntawm World Health Organization tau raug txheeb xyuas ua ntej, thiab PVC tau suav nrog hauv cov npe ntawm peb hom carcinogens.Yog li ntawd, nyob rau hauv lub neej txhua hnub, sim tsis txhob siv cov thawv PVC los tuav cov zaub mov, cia nyob ib leeg dej kub.

[Daim ntawv thov ntawm PVC], raws li ib qho ntawm lub ntiaj teb loj tshaj plaws cov khoom siv yas, PVC yog dav siv hauv cov khoom siv hauv tsev, cov khoom lag luam, cov khoom siv niaj hnub, cov ntaub pua tsev, cov vuas hauv pem teb, cov tawv tawv, cov kav dej, cov xov hlau thiab cov cables, ntim cov yeeb yaj kiab, lub raj mis. , foaming cov ntaub ntawv, sealing cov ntaub ntawv, fiber dimension, thiab lwm yam.