Lub hauv paus ntsiab lus ntawm Titanium Dioxide Dispersion hauv Aqueous Coatings
Lub hauv paus ntsiab lus ntawm titanium dioxide dispersion nyob rau hauv lub aqueous theem: peb muaj peev xwm roughly faib cov kev sib tsoo thiab dispersion txheej txheem ntawm titanium dioxide rau hauv peb kev sib nrig sib cuam tshuam thiab constraining kauj ruam.
A. Kev ntub dej;
B. Kev sib cais;
C. Stabilization.
Nyob rau hauv qhov tseeb sib tsoo thiab dispersion txheej txheem, peb cov kauj ruam no tsis maj mam, tab sis, theej ib tug saw, complementary thiab ob leeg txwv, uas yog, yog hais tias ib tug ntawm peb tsis tuaj yeem ua tiav lub hom phiaj yuav ua rau kev sib tsoo efficiency poob lossis txawm tias cov khoom tsis tuaj yeem. ncav cuag qhov xav tau degree, lossis rov qab mus rau ntxhib.
Nyob rau hauv cov txheej txheem ntawm txheej ntau lawm, dispersion ntawm titanium dioxide ncaj qha cuam tshuam rau kev ruaj ntseg ntawm cov dej-raws li txheej txheej, cov tsos ntawm txheej zaj duab xis thiab yooj yim ntawm painting ua hauj lwm. Hauv kev tsim cov txheej txheem dej-raws li txheej txheem, cov txheej txheem ntub dej ntawm titanium dioxide pigments yog "titanium dioxide - huab cua", "titanium dioxide - titanium dioxide particle interface" yog "titanium dioxide - resin tov interface" Cov yam ntxwv uas txiav txim siab ntub dej. Cov nyhuv feem ntau yog qhov adsorption ntawm cov tshuaj resin rau ntawm qhov chaw ntawm titanium dioxide pigment hais thiab nkag mus ntawm cov resin rau hauv cov voids ntawm titanium dioxide pigment coalescence. Cov txheej txheem pulverisation yog kev puas tsuaj ntawm lub cohesive los yog agglomerated lub cev ntawm titanium dioxide pigment particles rau hauv zoo hais los ntawm shear los yog cuam tshuam quab yuam, uas tsis yog tsuas yog muaj feem xyuam rau cov khoom, tab sis kuj muaj feem xyuam rau lub agglomeration xeev ntawm titanium dioxide pigment. Dispersion stabilization yog cov txheej txheem ntawm kev tiv thaiv kev sib sau ua ke ntawm cov khoom los ntawm kev ua phem ntawm lawv.
