PVCipfupiso ye polyvinyl chloride, uye chitarisiko chayo ihupfu chena. PVC ndeimwe yemapurasitiki mashanu akajairika pasi rose. Inoshandiswa zvakanyanya pasi rose, kunyanya mumabasa ekuvaka. Kune mhando dzakawanda dzePVC. Zvichienderana nekwakabva zvinhu, inogona kukamurwa kuitakarubhaidhinzira uyenzira ye ethylene. Zvinhu zvakagadziriswa zve calcium carbide method zvinonyanya kubva mumarasha nemunyu. Zvinhu zvakagadziriswa zve ethylene process zvinonyanya kubva mumafuta asina kucheneswa. Zvichienderana nemaitiro akasiyana ekugadzira, zvinogona kukamurwa kuita nzira yekumisikidza uye nzira ye emulsion. PVC inoshandiswa mumunda wekuvaka inonyanya kushandiswa senzira yekumisikidza, uye PVC inoshandiswa mumunda weganda inonyanya kushandiswa senzira ye emulsion. Suspension PVC inonyanya kushandiswa kugadzira: PVCmapaipi, PVCmapurofayiri, mafirimu ePVC, shangu dzePVC, waya dzePVC netambo, pasi pePVC nezvimwewo. Emulsion PVC inonyanya kushandiswa kugadzira: magirovhosi ePVC, dehwe rekugadzira rePVC, wallpaper yePVC, matoyi ePVC, nezvimwewo.
Tekinoroji yekugadzira PVC inogara ichibva kuEurope, USA neJapan. Kugona kwekugadzira PVC pasi rose kwakasvika matani mamiriyoni makumi matanhatu, uye China yaive nehafu yepasi rose. MuChina, 80% yePVC inogadzirwa ne calcium carbide process uye 20% ne ethylene process, nekuti China yagara iri nyika ine marasha akawanda uye mafuta mashoma.
Nguva yekutumira: Nyamavhuvhu-29-2022