Dab tsi yog PVC?

Dab tsi yog cov khoom siv PVC? Cov khoom siv PVC yog PVC, uas yog pheej yig thiab siv dav. Nws yog cov khoom siv raw ntawm plastics. Ntxiv cov nqi tsim nyog ntawm cov yas rau hauv PVC cob tuaj yeem ua cov khoom siv tawv, muag muag thiab pob tshab.

Qhov tseeb, PVC yog vinyl polymer, nws cov khoom siv yog cov khoom siv tsis muaj hluav taws xob. Kev ruaj khov, roj nplua nyeem, cov koom haum pabcuam kev ua haujlwm, cov xim pleev xim, los tiv thaiv cov neeg ua haujlwm thiab lwm cov tshuaj ntxiv feem ntau ntxiv rau PVC cov ntaub ntawv hauv kev siv. Nws muaj cov yam ntxwv ntawm kev tsis kub hnyiab, lub zog loj, tiv taus huab cua thiab kev tiv thaiv zoo geometric. PVC muaj muaj zog tiv taus oxidant, txo tus neeg sawv cev thiab muaj zog acid. Txawm li cas los xij, nws tuaj yeem kho tau los ntawm cov tshuaj oxidizing acids xws li sulfuric acid thiab concentrated nitric acid, thiab tsis tsim nyog rau kev sib cuag nrog uas muaj ntxhiab hydrocarbons thiab chlorinated hydrocarbons. Tsis tas li ntawd, hauv kev ua si, tus neeg siv lub sij hawm vs koos khoos phis raug txiav ua PVC, thiab PVC daim duab yog feem ntau muab txiav ua PVC.

PVC tuaj yeem muab faib ua cov mos mos PVC thiab tawv tawv PVC. Ntawm lawv, tawv PVC tso nyiaj rau li 2/3 ntawm kev ua lag luam, muag nyiaj PVC ua lag luam rau 1/3.

Mos PVC feem ntau yog siv rau hauv pem teb, qab nthab thiab tawv tawv, tab sis vim tias mos mos PVC muaj cov ntaub mos muag (uas tseem yog qhov sib txawv ntawm cov mos mos PVC thiab tawv tawv PVC), nws yog qhov yooj yim los ua brittle thiab nyuaj rau khaws cia, yog li nws daim ntawv thov cov kev txwv muaj tsawg. Cov.

Rigid PVC tsis muaj muag muag, yog li nws muaj qhov hloov tau yooj yim, yooj yim molding, tsis txhuam, tsis muaj tshuaj lom thiab tsis muaj kuab paug, lub sijhawm ntev cia, yog li nws muaj kev loj hlob zoo thiab daim ntawv thov tus nqi. Lub ntsiab lus ntawm PVC yog ib hom nqus plua plav yas zaj duab xis, uas yog siv rau txheej ntim ntawm txhua hom vaj huam sib luag, yog li nws tseem hu ua zaj duab xis zoo nkauj, nplaum zaj duab xis, thiab siv hauv cov khoom siv hauv tsev, ntim, tshuaj thiab ntau lwm yam lag luam. Ntawm lawv, lub tsev lag luam cov khoom siv ua lag luam muaj qhov sib faib ntau tshaj plaws, suav txog 60%, ua raws li kev lag luam ntim, thiab tus lej ntawm lwm cov ntawv thov kev lag luam me.