PVChe whakarāpopototanga mō te polyvinyl chloride, ā, ko tōna āhua he paura mā. Ko te PVC tētahi o ngā kirihou whānui e rima o te ao. E whakamahia whānuitia ana puta noa i te ao, inā koa i roto i te ao hanga. He maha ngā momo PVC. E ai ki te pūtake o ngā rauemi mata, ka taea te wehewehe kikonupūmā kāpiatikanga me tetikanga etilenaKo ngā rauemi mata o te tikanga konupūmā kāpirati i ahu mai i te waro me te tote. Ko ngā rauemi mata mō te tukanga ethylene i ahu mai i te hinu mata. E ai ki ngā tukanga whakaputa rerekē, ka taea te wehewehe ki te tikanga whakatārewatanga me te tikanga whakaemulsion. Ko te PVC e whakamahia ana i te ao hangahanga he tikanga whakatārewatanga, ā, ko te PVC e whakamahia ana i te ao hiako he tikanga whakaemulsion. Ko ngā PVC whakatārewatanga e whakamahia ana hei whakaputa: PVCngā paipa, PVCngā kōtaha, ngā kiriata PVC, ngā hū PVC, ngā waea me ngā taura PVC, ngā papa PVC me ērā atu. Ko te nuinga o ngā PVC whakapūkara e whakamahia ana hei hanga: ngā karapu PVC, ngā hiako horihori PVC, ngā pepapātū PVC, ngā taonga takaro PVC, me ērā atu.
I ahu mai ngā hangarau hanga PVC i Ūropi, i te USA me Hapani. Ko te kaha hanga PVC o te ao i eke ki te 60 miriona tana, ā, ko Haina te haurua o te ao. I Haina, e 80% o te PVC ka hangaia mā te tukanga konupūmā kāpira, ā, e 20% mā te tukanga etilena, nā te mea he whenua nui ake te waro, he iti ake te hinu, ko Haina tonu.
Wā tuku: 29 o Ākuhata-2022