Kayayyaki

Polyvinyl chloride (Polyvinyl chloride), Turanci gajarta PVC, shi ne polymer na vinyl chloride monomer (VCM) polymerized ta peroxide, azo fili da sauran initiators ko a karkashin aikin haske da zafi bisa ga inji na free radical polymerization..Vinyl chloride homopolymers da vinyl chloride copolymers ana kiransu gaba ɗaya a matsayin resin vinyl chloride.

PVC wani farin foda ne tare da tsarin amorphous tare da ƙananan digiri na reshe.Gilashin canjin yanayin zafin jiki shine 77 ~ 90 ° C, kuma yana fara rubewa a kusan 170 ° C.Kwanciyar hankali ga haske da zafi ba shi da kyau.Sama da 100 ° C ko bayan bayyanar hasken rana na dogon lokaci, zai rushe don samar da hydrogen chloride, da kuma kara bazuwar autocatalytic, yana haifar da canza launi da saurin raguwa a cikin kayan jiki da na inji.A cikin aikace-aikacen aikace-aikacen, dole ne a ƙara masu daidaitawa don inganta kwanciyar hankali ga zafi da haske.

Nauyin kwayoyin halittar PVC masana'antu gabaɗaya yana cikin kewayon 50,000 zuwa 110,000.Yana da babban polydispersity.Nauyin kwayoyin yana ƙaruwa tare da rage yawan zafin jiki na polymerization., 160 ~ 180 ℃ ya fara canzawa zuwa yanayin kwarara mai danko;kyawawan kaddarorin inji, ƙarfin ƙarfi na kusan 60MPa, ƙarfin tasiri na 5 ~ 10kJ / m²;m dielectric Properties.

PVC ya kasance mafi girma na gaba ɗaya filastik a duniya, kuma ana amfani dashi ko'ina.Ana amfani da shi sosai a cikin kayan gini, samfuran masana'antu, abubuwan yau da kullun, fata na ƙasa, fale-falen fale-falen ƙasa, fata na wucin gadi, bututu, wayoyi da igiyoyi, fina-finai na marufi, kwalabe, kayan kumfa, kayan rufewa, fibers, da sauransu.