Dab tsi yog pvc yeeb nkab
Dec 20, 2022
PVC, tseem hu ua Polyvinylchlorid, feem ntau yog tsim los ntawm polyvinyl chloride, nrog rau lwm cov khoom xyaw ntxiv los txhim kho nws cov cua sov, toughness thiab ductility. Nws yog ib qho zoo-hlub, nrov thiab dav siv cov khoom siv hluavtaws hauv ntiaj teb niaj hnub no. Nws txoj kev siv thoob ntiaj teb yog thib ob ntawm txhua yam khoom siv hluavtaws. Raws li kev txheeb cais, xyoo 1995 ib leeg, kev tsim cov PVC hauv Tebchaws Europe yog kwv yees li 5 lab tons, thiab kev noj yog 5.3 lab tons. Nyob rau hauv lub teb chaws Yelemees, qhov nruab nrab ntau lawm thiab noj ntawm PVC yog 1.4 lab tons.
Daim ntawv thov ntawm PVC yeeb nkab:
Cov khoom siv zoo: PVC yeeb nkab muaj cov khoom siv zoo thiab zoo corrosion kuj. Vim tias nws muaj kev cuam tshuam rau corrosion, nws yog feem ntau yuav tsum tau siv cov xim, thiab cov nqi kho mob siab heev. Cov kav hlau hlau hauv cov tsev zoo tib yam thiab cov haujlwm pej xeem yuav tsum tau hloov hauv 20 xyoo, thaum cov kav dej PVC zoo siv tau rau 50 xyoo. Yog li ntawd, PVC yeeb nkab yog cov khoom yas uas tsis tshua muaj nqi, siab zog thiab zoo corrosion kuj.
