Daim ntawv thov ntawm PVC ua npuas ncauj pawg thawj coj saib yog ib yam, feem ntau yog siv rau skid tsis kam, tiv thaiv lub caij nplooj zeeg, tiv thaiv siab, tshav kub rwb thaiv tsev thiab kub preservation ntawm blocks. PVC ua npuas ncauj pawg thawj coj saib muaj ntau yam xim, ntawm cov uas muaj ntau cov mis nyuj dawb, vim milky dawb zoo nkauj dua thiab dav.
Tam sim no cov neeg siv khoom muaj cov kev cai siab ntawm cov xim dawb ntawm cov npuas dej. Peb txhua tus paub tias tsis muaj teeb meem dab tsi, yog tias nws yog mis nyuj dawb, nws yooj yim tig daj, zoo li cov ntaub ntawv PVC ua npuas ncauj. Ntau lub tuam txhab ntxiv fluorescent whitening tus neeg sawv cev los txhim kho cov xim dawb, yog li PVC foaming fluorescent whitening tus neeg sawv cev zoo dua?
Qee lub sij hawm tib neeg pom tias cov tsos ntawm ntau cov khoom yog xim dawb thiab ci heev. Qhov tseeb, lawv tsis zoo li thaum ntawd. Lawv qhov xwm txheej pib yog daj me ntsis. Tsuas yog thaum qee cov khoom siv tshuaj lom neeg ntxiv tau ntxiv rau hauv cov txheej txheem tsim khoom tuaj yeem saib dawb tshwj xeeb.
Ntawm lawv, cov khoom siv PVC tsis yog xim dawb. Lawv yooj yim rau oxidized los ntawm huab cua hauv cov pa, uas ua rau lub ntsej muag du. Ntau lub tuam txhab tseem xav txog kev sim siv cov fluorescent brighteners los txhim kho tus nqi whiteness.
Txawm li cas los xij, cov fluorescent brighteners ntawm kev ua lag luam nyob rau theem no tuaj yeem hais tau tias tsis zoo. Txawm hais tias tus nqi kuj tseem siab, lossis qee tus neeg sawv cev tuaj yeem tau txais txiaj ntsig ntau los ntawm kev nce tus nqi kom txo cov ntsiab lus dej.
Tus neeg sawv cev no tau sim nws qhov zoo tshaj plaws, tab sis qhov tseeb ntawm ntau cov tshuaj fluorescent whitening tuaj rau cov tuam txhab yas tau ntev lawm. Qhov ntawd kuj ua rau ntau lub tuam txhab yas tshem tawm lub tswv yim ntawm kev nrhiav fluorescent brighteners.
Txawm li cas los xij, tsis tas yuav txhawj xeeb txog qhov no. Vim tias tus neeg sawv cev fluorescent whitening agent, RQT-C-1, yog ib qho tshwj xeeb PVC foaming fluorescent whitening agent, tuaj yeem daws tau cov teeb meem no, thiab tsis tas yuav txhawj xeeb txog cov ntsiab lus dej.
Tus neeg sawv cev fluorescent whitening no tuaj yeem sib xyaw nrog cov khoom siv raw thaum lub sijhawm tsim cov khoom ua npuas ncauj. Ib tuj ntawm raw cov ntaub ntawv tsuas yog yuav tsum tau ntxiv txog 200g. Raws li qhov kub siab thermal melting, nws tuaj yeem tswj tau cov hmoov resin zoo dua los ntawm kev oxidized thiab discolored los ntawm huab cua. Tus nqi whiteness ntawm cov khoom xa tawm tuaj yeem nce ntxiv los ntawm 15 cov ntsiab lus raws li kev kuaj xyuas qhov muag dawb, thiab tag nrho cov tsos xim zoo li mellow.
