PVA kua nplaum yog lub ntsiab lus ntawm Polyvinyl acetate.Cov tsos yog dawb hmoov.Nws yog ib hom dej-soluble polymer nrog ntau yam kev siv.Nws qhov kev ua tau zoo yog nruab nrab ntawm cov yas thiab roj hmab.Nws siv tau muab faib ua ob qho kev siv loj: fiber ntau thiab tsis muaj fiber ntau.Vim tias PVA muaj qhov tshwj xeeb muaj zog adhesion, zaj duab xis yooj, smoothness, roj tsis kam, hnyav tsis kam, tiv thaiv colloid, roj barrier, abrasion tsis kam thiab dej tsis kam nrog kev kho tshwj xeeb, nws tsis yog tsuas yog siv los ua cov khoom siv fiber ntau, nws kuj yog siv dav hauv kev tsim cov coatings, adhesives, daim ntawv ua tus neeg sawv cev, emulsifiers, dispersants, films thiab lwm yam khoom, nrog rau cov ntaub ntawv npog textiles, zaub mov, tshuaj, kev tsim kho, ntoo ua, papermaking, printing, ua liaj ua teb, steel, Polymer tshuaj kev lag luam thiab lwm yam lag luam.
Muab piv nrog cov nplaum zoo sib xws ntawm lub khw, nws tsis muaj cov khoom siv tshuaj lom xws li formaldehyde (siv hloov kho urea-formaldehyde resin lossis melamine resin lossis dej-soluble phenolic resin uas tuaj yeem ncav cuag ib puag ncig tiv thaiv E2 lossis siab dua. Tom qab ntxiv cov tshuaj tua kab thiab gypsum, nws tuaj yeem txo qhov pub dawb formaldehyde cov ntsiab lus ntawm cov khoom), tsis muaj kuab paug rau kev tsim khoom thiab siv ib puag ncig, tus nqi qis, cov txheej txheem yooj yim, cov txiaj ntsig zoo sib txuas, ceev kom qhuav thiab solidification ceev.Nws yog siv rau ntoo-raws li vaj huam sib luag ntau lawm yam tsis muaj kub nias thiab muaj qhov zoo ntawm lub zog txuag.
Ntau tus neeg siv khoom tam sim no siv PVA dawb latex los ua slimes.Qhov no kuj yog ib qho kev siv zoo ntawm PVA kua nplaum.Hauv qee lub tebchaws hauv Tebchaws Europe thiab Amelikas, ntau tus neeg muab lawv cov menyuam ua tiav slime raws li kev kawm theem pib.Nws cov khoom yog tsis muaj tshuaj lom thiab ib puag ncig tus phooj ywg, yog li tsis tas yuav txhawj xeeb txog seb cov kua nplaum puas yuav ua mob rau menyuam yaus.
Post lub sij hawm: Aug-16-2021