ʻO Polyvinyl chloride (PVC) kahi polymer i polymerized ʻia e ka vinyl chloride monomer (VCM) i loko o ka peroxide, azo compound a me nā mea hoʻomaka ʻē aʻe a i ʻole e like me ke ʻano polymerization radical free ma lalo o ka hana a ka mālamalama a me ka wela. ʻO ka vinyl chloride homopolymer a me ka vinyl chloride copolymer i kapa ʻia ʻo vinyl chloride resin.
ʻO PVC ka palakika hana nui loa o ka honua i ka wā ma mua, kahi i hoʻohana nui ʻia. Hoʻohana nui ʻia ia i nā mea kūkulu hale, nā huahana ʻoihana, nā mea pono o kēlā me kēia lā, ka ʻili papahele, nā tile papahele, ka ʻili hana, nā paipu, nā uea a me nā kaula, ka ʻili hoʻopili, nā ʻōmole, nā mea hoʻohua, nā mea sila, nā olonā a pēlā aku.
Wahi a ke ʻano o ka noi like ʻole, hiki ke hoʻokaʻawale ʻia ka PVC i: ka resin PVC kumu maʻamau, ke kiʻekiʻe o ka polymerization PVC resin a me ka resin PVC cross-linked. Hoʻokumu ʻia ka resin PVC kumu maʻamau e ka polymerization o ka vinyl chloride monomer ma lalo o ka hana a ka mea hoʻomaka; ʻO ke kekelē polymerization kiʻekiʻe o ka resin PVC e pili ana i ka resin polymerized ma ka hoʻohui ʻana i ka mea ulu kaulahao i loko o ka ʻōnaehana polymerization monomer vinyl chloride; ʻO ka resin PVC Crosslinked kahi resin polymerized ma ka hoʻohui ʻana i ka mea crosslinking e loaʻa ana ka diene a me ka polyene i loko o ka ʻōnaehana polymerization monomer vinyl chloride.
Wahi a ke ʻano o ka loaʻa ʻana o ka vinyl chloride monomer, hiki ke hoʻokaʻawale ʻia i ke ʻano calcium carbide, ke ʻano ethylene a me ke ʻano monomer i lawe ʻia mai (EDC, VCM) (ʻo ke ʻano ethylene a me ke ʻano monomer i lawe ʻia mai ua kapa ʻia ʻo ia he ʻano ethylene).
Ka manawa hoʻouna: Mei-07-2022