Txheej txheem cej luam ntawm TiO2 Surface Treatment
Kev kho deg yog hais txog txheej txheej ntawm ib lossis ntau txheej ntawm inorganic lossis organic tshuaj nyob rau saum npoo ntawm titanium dioxide pigment hais los ntawm kev sib txawv ntawm cov txheej txheem kho deg thiab txheej txheem, txhawm rau txhim kho qhov tsis xws ntawm titanium dioxide lossis hloov cov khoom nto. ntawm nws cov khoom thiab txhim kho nws cov huab cua, dispersibility thiab lwm yam khoom siv.
Kev kho saum npoo ntawm titanium dioxide yog tsuas yog los ntawm isoelectric point theory thiab stability theory, siv nag lossis daus, adsorption, ion pauv, covalent bonding thiab polymer grafting cov tshuaj tiv thaiv los hloov qhov chaw ntawm titanium dioxide, qhov tshwm sim ntawm kev hloov kho tsuas yog cuam tshuam qhov kev hloov ntawm qhov chaw. tsub nqi, thaj tsam hloov pauv, txhawm rau txhawm rau txhawm rau them nyiaj rau kev ua haujlwm photochemical ntawm titanium dioxide tsis xws luag, txhim kho huab cua thiab durability ntawm titanium dioxide, txhim kho nws cov wettability nyob rau hauv ntau yam xov xwm thiab dispersibility.
Kev kho saum npoo tsis hloov cov qauv crystalline, particle loj, particle loj faib thiab xim ntawm titanium dioxide (uas yog tswj los ntawm cov txheej txheem oxidation).
Muaj cov lattice tsis xws luag nyob rau saum npoo ntawm ntshiab TiO2, uas ua rau ntau cov ntsiab lus photoactivation ntawm TiO2 hais, thiab cov ntsiab lus photoactivation muaj zog heev nyob rau hauv qhov kev txiav txim ntawm ultraviolet lub teeb. Qhov me me TiO2 particles, ntau cov duab-ua kom cov ntsiab lus, qhov ua rau huab cua tsis zoo.
Unprocessed titanium dioxide uas nws cov calcined hais me me heev, muaj ib tug tshwj xeeb nto lub zog, tsis ruaj tsis khov, nyob rau hauv high kub yuav sai sai agglomerate, tsim sub-stable loj hais, rau TiO2, cov me me hais, lub zog gravitational quab yuam ntawm cov hais. , cov khoom muaj feem ntau yuav agglomerate
Txhawm rau txhim kho huab cua thiab tshuaj lom neeg ruaj khov ntawm TiO2, thiab txhawm rau txhim kho qhov tawg ntawm TiO2 hauv ntau yam xov xwm sib txawv, kev kho deg feem ntau yog siv rau TiO2. Kev kho deg yog tsim cov yeeb yaj kiab zoo ib yam ntawm TiO2 cov khoom los thaiv qhov chaw photoactivation ntawm TiO2 thiab txhim kho huab cua tsis kam.
