(1) CPE
Chlorinated polyethylene (CPE) ndi ufa wa chlorination woyimitsidwa wa HDPE mu gawo lamadzi. Ndi kuchuluka kwa chlorination digiri, choyambirira crystalline HDPE pang'onopang'ono amakhala amorphous elastomer. CPE yogwiritsidwa ntchito ngati toughening wothandizira nthawi zambiri imakhala ndi chlorine wa 25-45%. CPE ali osiyanasiyana magwero ndi mitengo otsika. Kuphatikiza pa kulimba kwake, imakhalanso ndi kuzizira, kukana nyengo, kukana moto, komanso kukana mankhwala. Pakadali pano, CPE ndiyomwe imathandizira kwambiri ku China, makamaka popanga mapaipi a PVC ndi mbiri, ndipo mafakitale ambiri amagwiritsa ntchito CPE. Zowonjezera zambiri zimakhala magawo 5-15. CPE ingagwiritsidwe ntchito molumikizana ndi ena toughening wothandizila, monga mphira ndi EVA, kukwaniritsa zotsatira zabwino, koma mphira zina si kugonjetsedwa ndi ukalamba.
(2) ACR
ACR ndi copolymer ya monomers monga methyl methacrylate ndi acrylic ester. Ndiwosintha bwino kwambiri wopangidwa m'zaka zaposachedwa ndipo chitha kukulitsa mphamvu yazinthu ndi kangapo. ACR ndi ya chosinthira chapakati-chipolopolo, chopangidwa ndi chipolopolo chopangidwa ndi methyl methacrylate ethyl acrylate polima, ndi mphira elastomer yopangidwa ndi crosslinking ndi butyl acrylate monga gawo lapakati la unyolo lomwe limagawidwa mkati mwa tinthu ting'onoting'ono. Zoyenera makamaka kusinthidwa kwa zinthu zapulasitiki za PVC kuti zigwiritsidwe ntchito panja, pogwiritsa ntchito ACR monga chosinthira pazitseko za pulasitiki ya PVC ndi mawindo a zenera ali ndi mawonekedwe a magwiridwe antchito abwino, osalala pamwamba, kukana kukalamba bwino, ndi mphamvu zowotcherera zamakona poyerekeza ndi zosintha zina. , koma mtengo ndi pafupifupi gawo limodzi mwa magawo atatu apamwamba kuposa CPE.
(3) MBS
MBS ndi copolymer ya monomers atatu: methyl methacrylate, butadiene, ndi styrene. The solubility parameter ya MBS ili pakati pa 94 ndi 9.5, yomwe ili pafupi ndi gawo la solubility la PVC. Chifukwa chake, imagwirizana bwino ndi PVC. Chinthu chake chachikulu ndi chakuti mutatha kuwonjezera PVC, ikhoza kupangidwa kukhala chinthu chowonekera. Nthawi zambiri, kuwonjezera magawo 10-17 ku PVC kumatha kukulitsa mphamvu zake ndi nthawi 6-15. Komabe, kuchuluka kwa MBS kowonjezera kupitilira magawo 30, mphamvu yamphamvu ya PVC imachepa. MBS palokha imakhala ndi magwiridwe antchito abwino, kuwonekera bwino, komanso kutumiza kupitilira 90%. Ngakhale kuwongolera magwiridwe antchito, sikukhudza kwambiri zinthu zina za utomoni, monga kulimba kwamphamvu komanso kutalika panthawi yopuma. MBS ndi yokwera mtengo ndipo nthawi zambiri imagwiritsidwa ntchito pophatikizana ndi zosintha zina monga EAV, CPE, SBS, etc. MBS ili ndi kutentha kosasunthika komanso kutentha kwa nyengo, zomwe zimapangitsa kuti zikhale zosayenera kugwiritsa ntchito kunja kwa nthawi yaitali. Nthawi zambiri sagwiritsidwa ntchito ngati chosinthira pakupanga zitseko zapulasitiki ndi mawindo awindo.
(4) SBS
SBS ndi ternary block copolymer ya styrene, butadiene, ndi styrene, yomwe imadziwikanso kuti thermoplastic styrene butadiene rabara. Ndi ya thermoplastic elastomers ndipo kapangidwe kake kakhoza kugawidwa m'mitundu iwiri: yowoneka ngati nyenyezi komanso yofananira. Chiŵerengero cha styrene ndi butadiene mu SBS makamaka 30/70, 40/60, 28/72, ndi 48/52. Amagwiritsidwa ntchito kwambiri ngati chosinthira cha HDPE, PP, ndi PS, chokhala ndi magawo 5-15. Ntchito yayikulu ya SBS ndikuwongolera kukana kwake kotsika kutentha. SBS ili ndi vuto losalimbana ndi nyengo ndipo siyoyenera kugwiritsa ntchito nthawi yayitali panja.
(5) ABS
ABS ndi ternary copolymer wa styrene (40% -50%), butadiene (25% -30%), ndi acrylonitrile (25% -30%), makamaka ntchito ngati mapulasitiki engineering komanso ntchito PVC kukhudza kusinthidwa, ndi zabwino otsika. -Kutentha kumasintha zotsatira. Kuchuluka kwa ABS kowonjezera kukafika magawo 50, mphamvu ya PVC imatha kukhala yofanana ndi ya ABS yoyera. Kuchuluka kwa ABS wowonjezera nthawi zambiri kumakhala magawo 5-20. ABS ili ndi vuto lolimbana ndi nyengo ndipo siyoyenera kugwiritsidwa ntchito panja kwa nthawi yayitali pazogulitsa. Nthawi zambiri sagwiritsidwa ntchito ngati chosinthira pakupanga zitseko zapulasitiki ndi mawindo awindo.
(6) EVA
EVA ndi copolymer ya ethylene ndi vinyl acetate, ndipo kuyambitsa kwa vinyl acetate kumasintha crystallinity wa polyethylene. Zomwe zili mu vinyl acetate ndizosiyana kwambiri, ndipo refractive index ya EVA ndi PVC ndi yosiyana, zomwe zimapangitsa kuti zikhale zovuta kupeza zinthu zowonekera. Chifukwa chake, EVA imagwiritsidwa ntchito nthawi zambiri kuphatikiza ndi ma resin ena osamva. Kuchuluka kwa EVA yowonjezeredwa ndi magawo ochepera 10.
Nthawi yotumiza: Mar-15-2024
