Taw qhia rau PVC ntim zaj duab xis

PVC yog cov khoom siv tsis yog -crystalline. Nyob rau hauv cov ntaub ntawv siv tau, stabilizers, lubricants, kev pab cuam, colorants, tej yam hloov pauv, thiab lwm yam additives feem ntau ntxiv rau PVC. PVC tsis yog -flammable, muaj lub zog siab, huab cua tsis kam, thiab zoo heev geometric stability. PVC muaj zog tiv taus oxidants, txo cov neeg ua haujlwm, thiab muaj zog acids. Txawm li cas los xij, nws tuaj yeem corroded los ntawm concentrated oxidizing acids xws li concentrated sulfuric acid thiab concentrated nitric acid, thiab tsis haum rau kev sib cuag nrog aromatic hydrocarbons los yog chlorinated hydrocarbons. Lub melting kub yog ib qho tseem ceeb ntawm cov txheej txheem thaum lub sij hawm ua PVC; Qhov tsis tsim nyog yuav ua rau cov khoom decomposition. PVC muaj cov yam ntxwv tsis zoo thiab kev ua haujlwm nqaim. High molecular hnyav PVC yog tshwj xeeb tshaj yog nyuaj rau txheej txheem (cov khoom no feem ntau yuav tsum tau ntxiv cov lubricants los txhim kho cov yam ntxwv ntws), yog li ntawd, tsis tshua muaj molecular hnyav PVC feem ntau yog siv. PVC muaj qhov shrinkage tsawg heev, feem ntau 0.2% mus rau 0.6%.