Tus nqi teeb meem rau kev xa tawm ntawm cov ntawv PVC ua los ntawm cov tshuab blister

PVC yog cov khoom siv tshuaj lom neeg yooj yim, thiab cov khoom sib txawv me me. Raws li cov qauv kev lag luam hauv tsev ntawm kev sib tw ua tiav, tus nqi yog qhov tseem ceeb tshaj plaws cuam tshuam rau kev sib tw ntawm kev lag luam. Vim muaj cov yam ntxwv ntawm kev lag luam, cov khoom siv raw thiab cov khoom siv hluav taws xob ua rau muaj feem ntau ntawm cov nqi khoom. Tus nqi ntawm cov roj av ethylene txoj kev yog feem ntau cuam tshuam los ntawm tus nqi ntawm cov roj; Tus nqi tsim khoom ntawm txoj kev calcium carbide feem ntau cuam tshuam los ntawm tus nqi ntawm calcium carbide. Feem ntau hais lus, tus nqi ntawm calcium carbide yog kwv yees li 70 feem pua ​​​​ntawm cov nqi ntawm PVC, thiab cov nqi hluav taws xob yog kwv yees li 60 feem pua ​​​​ntawm cov nqi ntawm calcium carbide. Western kuv lub teb chaws muaj ntau cov peev txheej hluav taws xob thiab cov nqi hluav taws xob tsawg. Piv nrog rau Eastern calcium carbide ntau lawm tuam txhab, western calcium carbide ntau lawm qhauj muaj tej yam zoo ntawm cov nqi. Thiab cov chaw lag luam nrog cov peev txheej nyiaj txiag thiab txhawb nqa calcium carbide ntau lawm yuav tsim kom muaj nuj nqis ntau dua.