Izinto zePVC

I-Polyvinyl chloride (kungenjalo: i-poly(vinyl chloride), i-colloquial: i-polyvinyl, okanye i-vinyl ngokulula; ifinyeziwe: i-PVC) yi-polymer yokwenziwa kweplastiki yokwenziwa kweyesithathu kwihlabathi (emva kwe-polyethylene kunye ne-polypropylene).Malunga ne-40 yezigidi zeetoni zePVC ziveliswa nyaka ngamnye.

I-PVC iza ngeendlela ezimbini ezisisiseko: iqinile (ngamanye amaxesha ifinyezwa njenge-RPVC) kwaye iyabhetyebhetye.Ifomu eqinile yePVC isetyenziselwa ukwakhiwa kombhobho kunye nezicelo zeprofayili ezifana neengcango kunye neefestile.Ikwasetyenziswa ekwenzeni iibhotile zeplastiki, ukupakishwa okungekuko ukutya, amaphepha okugquma ukutya kunye namakhadi eplastiki (afana namakhadi ebhanki okanye obulungu).Ingenziwa ibe thambileyo kwaye ibe bhetyebhetye ngokudityaniswa kweeplasticizers, eyona isetyenziswa kakhulu yiphthalates.Kule fomu, iphinda isetyenziswe kwimibhobho yamanzi, ukugquma kwentambo yombane, ukuxelisa isikhumba, umgangatho, iimpawu, iirekhodi zegramafoni, iimveliso ezinokuphepheka, kunye nezicelo ezininzi apho zithatha indawo yerabha.Ngekotoni okanye ilinen, isetyenziswe kwimveliso ye-canvas.

I-polyvinyl chloride ecocekileyo yi-white, brittle solid.Ayinyibiliki etywaleni kodwa inyibilika kancinane kwi-tetrahydrofuran.

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I-PVC yadityaniswa ngo-1872 ngusokhemisti waseJamani u-Eugen Baumann emva kophando olwandisiweyo kunye novavanyo.Ipolymer yabonakala iqinile emhlophe ngaphakathi kweflaski yevinyl chloride eyayishiywe kwishelufu ekhuselwe ekukhanyeni kwelanga iiveki ezine.Ekuqaleni kwenkulungwane yama-20, isazi samachiza saseRashiya u-Ivan Ostromislensky kunye noFritz Klatte wenkampani yemichiza yaseJamani iGriesheim-Elektron bobabini bazama ukusebenzisa i-PVC kwiimveliso zorhwebo, kodwa ubunzima bokucubungula i-polymer eqinile, ngamanye amaxesha i-brittle yaphazamisa imizamo yabo.U-Waldo Semon kunye ne-BF Goodrich Company baqulunqa indlela ngo-1926 yokwenza iplastiki yePVC ngokuyixuba kunye neentlobo ezahlukeneyo zokudibanisa, kuquka ukusetyenziswa kwe-dibutyl phthalate ngo-1933.


Ixesha lokuposa: Feb-09-2023