Nā huahana

ʻO Polyvinyl chloride (Polyvinyl chloride), ka ʻōlelo Pelekania PVC, he polymer o ka vinyl chloride monomer (VCM) polymerized e peroxide, azo compound a me nā mea hoʻomaka a i ʻole ma lalo o ka hana o ka māmā a me ka wela e like me ke ʻano o ka polymerization radical manuahi..ʻO Vinyl chloride homopolymers a me vinyl chloride copolymers i hui pū ʻia he vinyl chloride resins.

ʻO PVC kahi pauka keʻokeʻo me kahi ʻano amorphous me kahi liʻiliʻi o ka lālā.ʻO ka mahana hoʻololi aniani he 77 ~ 90 ° C, a hoʻomaka ia e decompose ma kahi o 170 ° C.ʻAʻole maikaʻi ka paʻa o ka māmā a me ka wela.Ma luna o 100 ° C a i ʻole ma hope o ka ʻike ʻana o ka lā lōʻihi, e hoʻoheheʻe ia e hana i ka hydrogen chloride, a me ka decomposition autocatalytic hou, e hoʻoneʻe ai i ka discoloration a me ka emi wikiwiki o nā waiwai kino a me nā mechanical.Ma nā noi kūpono, pono e hoʻohui ʻia nā stabilizers e hoʻomaikaʻi i ka paʻa i ka wela a me ka māmā.

ʻO ke kaumaha molekala o PVC i hana ʻia i ka ʻoihana ma ke ʻano he 50,000 a 110,000.He polydispersity nui kona.Piʻi ka paona molekala me ka emi ʻana o ka mahana polymerization., 160 ~ 180 ℃ ua hoʻomaka e hoʻololi i ke kahe kahe ʻana;nā waiwai mechanical maikaʻi, ka ikaika tensile ma kahi o 60MPa, ka ikaika hopena o 5 ~ 10kJ / m²;nā waiwai dielectric maikaʻi loa.

ʻO PVC ka mea plastik nui loa i ka honua, a ua hoʻohana nui ʻia.Hoʻohana nui ʻia ia i nā mea kūkulu hale, nā huahana ʻoihana, nā mea e pono ai i kēlā me kēia lā, ka ʻili papahele, nā tile papahele, nā ʻili artificial, nā paipu, nā uea a me nā kaula, nā kiʻi ʻoniʻoni, nā ʻōmole, nā mea hupa, nā mea hoʻopaʻa, nā fibers, etc.