Cov haujlwm tseem ceeb ntawm titanium dioxide rau cov kav dej yog dab tsi?

1, Cov Haujlwm Tseem Ceeb
Txhim kho kev tiv thaiv huab cua thiab kev tiv thaiv kev laus: titanium dioxide (TiO2) tuaj yeem ncua cov txheej txheem laus ntawm cov kav dej (xws li PVC thiab PE kav dej) hauv qhov chaw sab nraum zoov, tiv thaiv kev daj, embrittlement thiab chalking ntawm qhov chaw, thiab ntev lub neej kev pabcuam los ntawm kev nqus lub teeb ultraviolet thiab tiv thaiv cov tshuaj tiv thaiv photochemical. Rutile titanium dioxide muaj peev xwm tiv thaiv UV zoo dua vim yog kev kho txheej (xws li zirconia / alumina).
Txhim kho kev npog thiab kev dawb: Cov khoom siv refractive index siab tso cai rau titanium dioxide kom tawg lub teeb pom kev, npog cov xim hauv paus ntawm cov yeeb nkab substrate (xws li lub teeb daj ntawm PVC), muab cov khoom dawb siab, xim sib xws, thiab tsos ci. Lub suab xiav theem tuaj yeem ua kom pom kev dawb.
Txhim kho kev ua haujlwm thiab kev ruaj khov: Kev nqus roj tsawg (≤ 23g/100g) thiab cov txheej txheem kho qhov chaw organic (xws li ntxiv lub teeb TR-36) txhim kho kev sib kis ntawm titanium dioxide hauv cov yas yaj, txo kev siv zog ntau lawm, thiab zam kev puas tsuaj xws li qhov hws thiab cov cim ntws ntawm qhov chaw ntawm cov kav dej.
2, Cov kev cai tshwj xeeb rau daim ntawv thov
Kev hloov kho kom tsis txhob muaj huab cua: Cov kav dej sab nraum zoov yuav tsum siv rutile titanium dioxide (xws li SR-236, R-838), uas nws cov txheej txheem tuaj yeem tiv taus kev puas tsuaj ntawm cov resin los ntawm UV catalysis; Hom titanium ntse yog qhov ua rau cov kav dej laus sai dua vim tsis muaj huab cua zoo.
Xim thiab kev tswj cov hlau hnyav: Cov xim xiav titanium dioxide (xws li R-248) tuaj yeem tawm tsam cov xim daj ntawm cov kav dej PVC thiab txhim kho lawv qhov zoo nkauj; Yuav tsum tau them sai sai rau cov ntsiab lus hlau hnyav (xws li chromium thiab lead) ntawm titanium dioxide hauv cov kav dej uas cuam tshuam nrog dej kom tsis txhob ua rau dej tsis zoo.
Kev sib xws ntxiv: Cov kav dej PVC uas muaj cov tshuaj stabilizers ntsev txhuas yuav tsum tau xaiv nrog cov qauv tsim nyog los tiv thaiv cov kev tsis zoo ntawm titanium dioxide thiab cov stabilizers.
4. Cov lus qhia siv
Tus nqi ntxiv: feem ntau yog 3% -5% ntawm qhov hnyav ntawm cov khoom siv, kho raws li qhov yuav tsum tau ua kom tsis txhob muaj huab cua;
Kev tiv thaiv kev ua haujlwm: Yuav tsum tau khaws cia kom tsis txhob muaj dej noo, thiab yuav tsum hnav hnab looj tes tiv thaiv thiab tsom iav thaum lub sijhawm ua haujlwm.
Lus Cim: Kev tsiv teb tsaws chaw ntawm cov hlau hnyav ntawm titanium dioxide hauv cov kav dej uas cuam tshuam nrog dej yuav tsum tau txheeb xyuas kom meej tias ua raws li cov qauv kev tu cev.