Lub luag haujlwm ntawm Titanium Dioxide ntawm Huab Cua
Resistance ntawm cov ntaub ntawv PVC
Los ntawm kev ntxiv rutile titanium dioxide rau cov khoom yas, nws tuaj yeem txhim kho cov cua sov, lub teeb thiab huab cua tsis kam ntawm cov khoom yas, txhim kho lub cev thiab tshuaj lom neeg ntawm cov khoom yas, thiab txuas ntxiv lawv lub neej kev pab. Cov khoom siv PVC yuav tsum muaj huab cua zoo heev kom ua tau raws li qhov yuav tsum tau siv rau sab nraum zoov mus ntev. Txoj hauv kev zoo rau cov ntaub ntawv PVC dawb los tiv thaiv UV kev puas tsuaj yog ntxiv rutile titanium dioxide nrog cov huab cua tshwj xeeb.
Cov nyhuv ntawm titanium dioxide rau huab cua ntawm PVC cov ntaub ntawv yog manifested nyob rau hauv peb lub ntsiab yam.
Ua ntej, titanium dioxide qhov nqus ntawm ultraviolet lub teeb zoo txo qhov tshwm sim ntawm cov duab-oxidative degradation ntawm resin molecules nyob rau hauv cov khoom.
Thib ob, lub luag haujlwm ntawm titanium dioxide refraction ntawm lub teeb pom kev, uas txwv kev nqus ntawm lub teeb los ntawm cov qauv polyene thiab lwm yam impurities hauv cov qauv molecular ntawm PVC. Yog li, nws tuaj yeem npog qhov kev hloov pauv tshwm sim los ntawm kev laus ntawm PVC, xws li yellowing tshwm sim.
Thib peb, lub luag haujlwm ntawm photocatalysis tom qab nqus ultraviolet lub teeb los ntawm titanium dioxide. Cov nyhuv catalytic zoo li no, tuaj yeem ua rau maj mam degradation ntawm polymers, cov khoom nto gloss txo. Thiab nrog qhov raug ntawm cov xim txheej los ntawm txheej, thiab maj mam tshwm sim ntawm chalking. Rau cov tshuab ruaj khov nrog cov ntsev ntsev, cov nyhuv photocatalytic ntawm titanium dioxide kuj tuaj yeem ua rau qhov tshwm sim ntawm cov hlau lead txo, uas ua rau grey-dub discoloration ntawm cov khoom. Yog li, titanium dioxide pigments siv nyob rau hauv PVC cov ntaub ntawv yuav tsum tau zoo weathered los suppress lawv photocatalytic kev ua si.
