Imiterere yumubiri nibikorwa byingenzi byimfashanyigisho za PVC

Imfashanyo yo gutunganya PVC ni polimoplastique graft polymer yabonetse muri polymerisation ya methyl methacrylate na acrylate binyuze mumavuta yo kwisiga. Ikoreshwa cyane mugutunganya no gukora ibikoresho bya PVC. Ifite ingaruka nziza mukuzamura ingaruka zo kurwanya ibikoresho bya PVC. Irashobora gutegura intambwe-ntambwe ya polymerisiyasi ikoresheje amavuta yo kwisiga ya polymerisiyonike, harimo amavuta yo kwisiga gakondo hamwe na shell amavuta yo kwisiga. Ibyiza byayo biri mubushobozi bwo kugenzura ibihimbano, ingano, ubunini bwikigero, igipimo cyigikonoshwa na radiyo yibanze, ibiranga imikorere yubuso, nibindi byuduce ukurikije ibikenewe bitandukanye mugihe cya synthesis reaction, kandi ibivamo ingano yo kugabana birasa. .

Ibikoresho nyamukuru byifashishwa mu gutunganya PVC ni estrice estry na methyl methacrylate. Mu musaruro nyirizina, acrylate isanzwe ibanza guhindurwa hamwe nabandi ba monomers (nka styrene, acrylonitrile, nibindi) ikoresheje amavuta yo kwisiga kugirango ikore polymer ifite ubushyuhe buke bwikirahure, ni ukuvuga intangiriro ifite imitungo ya elastomer, hanyuma igahita ikoporora hamwe na methyl methacrylate , styrene, nibindi kugirango bakore polymer hamwe nigishishwa cyimiterere. Ibirimo bikomeye byo kwisiga amavuta ya lisansi muri rusange ni hafi 45% ± 3%, kandi amavuta yo kwisiga akuma kandi akabura amazi kugirango amazi yibicuruzwa atageze kuri 1% (agace kinshi) kugirango abone ifu yera.

Core shell amavuta yo kwisiga polymerisation nifatizo ya tekinoroji ya ACR ikora. Imiterere yibikonoshwa ya ACR irashobora kugabanwa muburyo butatu: imiterere yibikoresho byoroshye byoroshye, imiterere yoroshye yibikonoshwa, hamwe nuburyo bworoshye bworoshye butatu. Nyamara, ubwoko bwibanze bugurishwa ku isoko ni "yoroshye yibanze ikomeye". ACR isubirana niyi miterere ifite imikorere myiza kandi irakoreshwa cyane. Igikonoshwa cyibanze cya lisansi polymerisation ya "soft core hard shell structure" ni inzira aho monomer ikomeye yomekwa ku mbuto yoroheje yoroheje ya latx yakozwe nintambwe yambere ya lisansi polymerisation. Ubwoko na dosiye ya emulisiferi, igipimo cyibanze-igishishwa, uburyo bwo kugaburira shell monomer, guhuza urwego rwimbuto latx ibice (reberi ya rubber), ingano yimbuto, nubwoko na dosiye ya agent ihuza byose bifite ingaruka zikomeye kumiterere-shitingi ya ACR latex ibice nibicuruzwa byanyuma bya ACR.