I-Polyvinyl chloride (PVC) yi-polymer eyenziwe yi-vinyl chloride monomer (VCM) kwi-peroxide, kwi-azo compound nakwezinye izinto eziqalisileyo okanye ngokwendlela yokwenza i-free radical polymerization phantsi kwesenzo sokukhanya nobushushu. I-vinyl chloride homopolymer kunye ne-vinyl chloride copolymer zibizwa ngokuba yi-vinyl chloride resin.
I-PVC yayiyeyona plastiki inkulu ehlabathini, eyayisetyenziswa kakhulu. Isetyenziswa kakhulu kwizixhobo zokwakha, kwiimveliso zoshishino, kwizinto ezifunekayo mihla le, kwisikhumba somgangatho, kwiithayile zomgangatho, kwisikhumba sokwenziwa, kwiipayipi, kwiintambo kunye neentambo, kwiifilimu zokupakisha, kwiibhotile, kwizinto zokufaka igwebu, kwizinto zokuvala, kwiifayibha njalo njalo.
Ngokweenkalo ezahlukeneyo zesicelo, i-PVC inokwahlulwahlulwa ibe: i-PVC resin esetyenziselwa injongo ngokubanzi, i-PVC resin enezinga eliphezulu le-polymerization kunye ne-PVC resin ene-cross-linked. I-PVC resin eyenzelwe injongo ngokubanzi yenziwa yi-polymerization ye-vinyl chloride monomer phantsi kwesenzo somqalisi; I-PVC resin enezinga eliphezulu le-polymerization ibhekisa kwi-resin polymerized ngokongeza i-chain growth agent kwinkqubo ye-vinyl chloride monomer polymerization; I-PVC resin ene-crosslinked yi-resin polymerized ngokongeza i-crosslinking agent equlethe i-diene kunye ne-polyene kwinkqubo ye-vinyl chloride monomer polymerization.
Ngokwendlela yokufumana i-vinyl chloride monomer, ingahlulwahlulwa ibe yindlela ye-calcium carbide, indlela ye-ethylene kunye nendlela ye-imported (EDC, VCM) monomer (ngokwesiko, indlela ye-ethylene kunye nendlela ye-imported monomer zibizwa ngokuba yindlela ye-ethylene).
Ixesha lokuthumela: Meyi-07-2022