PVC yas raw khoom thiab cov khoom siv rov ua dua tshiab

PVC yas pellets yog cov khoom siv tseem ceeb rau cov khoom siv PVC hauv kev lag luam plastics. Ntau yam khoom yas hauv peb lub neej yog ua los ntawm cov khoom siv raw. Qhov tseeb, PVC yas granules tuaj yeem muab faib ua ob pawg: cov khoom siv raw thiab cov khoom siv rov ua dua tshiab raws li cov txheej txheem ntau lawm. Txawm hais tias lawv nyuaj rau kev paub qhov txawv ntawm qhov tsos, lawv txawv heev ntawm qhov thiab tus nqi. Cov khoom siv raw (cov khoom siv tshiab) ntawm PVC yas granules tuaj yeem ua tiav ncaj qha los ntawm PVC resin raw khoom; Cov khoom siv rov ua dua tshiab PVC yas granules (cov ntaub ntawv rov ua dua tshiab) yog cov khoom siv ua tiav PVC uas tau siv thiab siv hauv kev lag luam, thiab cov khoom siv PVC siv dua tom qab ua tiav, cov yam ntxwv ntawm cov khoom siv rov ua dua tshiab yuav phem dua li cov khoom siv tshiab, vim tias cov khoom siv rov ua dua tshiab yog ua tiav ntawm qhov kub thiab txias, lub brittleness yog nce, lub toughness yog txo, thiab impurities yog nce.