Poyambitsa copolymerization yake ya monomer mu unyolo waukulu wa vinyl chloride, polima yatsopano yokhala ndi maulalo awiri a monomer imapezedwa, yomwe imatchedwa copolymer.Mitundu yayikulu ndi katundu wa ma copolymers a vinyl chloride ndi ma monomers ena ndi awa:
(1) vinilu kolorayidi vinilu acetate copolymer: kumayambiriro vinilu acetate monoma akhoza kuchita mbali ya plasticizer ambiri, ndiye otchedwa "mkati plasticization", amene angapewe evaporation, kusamuka, m'zigawo ndi zolakwa zina za plasticizers ambiri. , ndipo akhoza kuchepetsa kusungunuka mamasukidwe akayendedwe, kuchepetsa processing kutentha ndi kusintha processing ntchito.Nthawi zambiri, zomwe zili mu vinyl acetate mu copolymer ndi 3-14%.
Kuipa kwakukulu kwa vinyl chloride vinilu acetate copolymer ndi kuchepetsa mphamvu zolimba, kutentha kwa kutentha kwa kutentha, kukana kuvala, kukhazikika kwa mankhwala ndi kukhazikika kwa kutentha.
⑵ vinyl chloride vinylidene chloride copolymer: pulasitiki, kufewetsa kutentha, kusungunuka ndi intramolecular plasticization ya copolymer iyi kwenikweni ndi yofanana ndi ya vinyl chloride vinilu acetate copolymer.Amadziwika ndi kutsika kwa madzi ndi mpweya, kusungunuka kwakukulu mu zosungunulira za ketone, ndi kukana kusungunuka kwa aromatics, kotero kuti chitha kugwiritsidwa ntchito bwino pakupaka.Kuphatikiza apo, imagwiritsidwanso ntchito kupanga mafilimu ocheperako.Chifukwa cha kusakanizidwa bwino kwa kutentha ndi kukhazikika kopepuka poyerekeza ndi vinyl chloride vinilu acetate copolymer, komanso kukwera mtengo kwa monomer, sikugwiritsidwa ntchito kwambiri ngati vinilu kolorayidi vinilu acetate.
(3) vinyl chloride acrylate copolymer: mphamvu yamkati ya pulasitiki ya copolymer iyi ndi yofanana ndi ya vinyl chloride vinyl acetate, yokhala ndi kukhazikika kwamafuta.Itha kugwiritsidwa ntchito popanga zinthu zolimba komanso zofewa, ndikuwongolera magwiridwe antchito, kukana kwamphamvu komanso kukana kuzizira.Itha kugwiritsidwanso ntchito kupaka, kulumikiza, etc.
(4) vinilu kloridi maleate copolymer: zili maleate mu copolymer pafupifupi 15%, ndipo mkati plasticizing zotsatira ndi ofanana ndi vinilu kolorayidi acrylate.Ili ndi processability wabwino.Kutsika kwa zinthu zakuthupi ndi zamakina ndizochepa, ndipo kukana kutentha kumakhala kwakukulu kuposa ma copolymers ambiri.
(5) vinilu kloridi olefin copolymer: copolymerization wa ethylene, propylene ndi monomers olefin ena akhoza kupanga utomoni copolymer ndi fluidity kwambiri, bata matenthedwe, kukana zimakhudza, transparency, kutentha kukana ndi zina zotero.
Kusintha kosanganikirana kwa yankho
Kupinda kumezanitsa zotakasika polymerization
Kusinthidwa poyambitsa ma monomers ena mu unyolo wam'mbali wa PVC kapena vinyl chloride tcheni mu unyolo wam'mbali wa ma polima osakanikirana amatchedwa graft reactive polymerization.
4. Low kutentha polymerization
Kusintha makonzedwe a maunyolo unyolo mu unyolo waukulu wa PVC kapena kusintha makonzedwe pakati PVC unyolo kumatanthauza kusintha polymerization njira.Kusintha kumeneku kumatchedwa kutsika kwa kutentha kwa polymerization.
Nthawi yotumiza: Jul-15-2022