PVC additives muaj xws li plasticizers, stabilizer chemical additives, fillers, colorants, lubricants, nplaim retardants thiab pa luam yeeb suppressors. Colorant yog ib qho tshuaj ntxiv uas tuaj yeem ua rau cov xim muaj xim, uas tau muab faib ua ob pawg raws li nws cov chav kawm tshuaj: tshuab xim thiab cov xim organic.
Plastic colorants feem ntau muab faib ua dyes thiab pigments raws li lawv solubility. Dye yog hais txog cov organic teeb meem uas tuaj yeem ua rau hauv kev daws teeb meem thiab muaj peev xwm dyeing muaj zog. Txawm li cas los xij, vim nws tsis zoo lub teeb tsis kam, kub thiab hnyav zog, nws yog ib qho yooj yim rau migrate thiab exude, thiab tsis tshua muaj siv rau xim PVC.
Qhov sib txawv tseem ceeb ntawm cov xim thiab cov xim dyes yog cov xim xim yog cov xim tsis sib haum uas yog cov khoom sib xyaw thiab sib cais nrog yaj xim, thiab lwm yam ntaub ntawv yog xim los ntawm cov khoom siv. Cov pigments tau muab faib ua cov xim tsis muaj zog, cov xim organic thiab cov xim tshwj xeeb raws li lawv cov qauv thiab muaj pes tsawg leeg.
1, inorganic pigments yog pheej yig, zoo tshav kub tsis kam, tab sis feem ntau ntawm cov pob tshab thiab cov xim muaj zog tsis zoo, xim tsis kaj. Peb feem ntau siv carbon dub, hlau liab, chromium daj, titanium, ultramarine yog tag nrho cov tshuab pigments, tsuas yog ultramarine transparency siv tau rau cov khoom pob tshab.
2. Cov organic pigments nyob rau hauv plastics muaj zoo dispersion, siab coloring zog thiab kaj xim. Nws yog ib qho xim zoo tagnrho rau cov yas. Ntau hom organic pigments, ua tiav xim spectrum. Piv txwv li, peb feem ntau siv ci liab, vermilion, phthalocyanine xiav, phthalocyanine ntsuab, daj daj, mus tas li liab doog yog cov organic pigments.