Daim ntawv thov ntawm Titanium Dioxide hauv Electrophoretic Xim
Electrophoresis yog ib txoj hauv kev zoo tshaj plaws ntawm kev pleev xim hlau ua haujlwm. Electrophoretic xim yog ib txoj kev pleev xim tshwj xeeb uas cov khoom pleev xim nrog cov khoom siv yog dipped rau hauv lub tank ntim nrog dej diluted nrog cov xim tsis tshua muaj xim electrophoretic raws li anode (los yog cathode), thiab lwm cathode (los yog anode) yog teem rau hauv. lub tank nrog nws cov counterpart, thiab tom qab ib lub sij hawm ntawm ncaj qha tam sim no dhau ntawm ob tug ncej, ib tug uniform thiab zoo, uas tsis yog-dej-solved txheej zaj duab xis yog tso rau saum npoo ntawm cov khoom pleev xim. Yog li, dab tsi yog daim ntawv thov ntawm titanium dioxide ua ib qho ntawm cov khoom hauv electrophoretic xim?
1. Qhov luaj li cas ntawm titanium dioxide pigment
Qhov loj me me ntawm titanium dioxide pigments yuav tsum tsawg dua 10 µm. me me particle me me pigments tuaj yeem tsim cov xim pleev xim tuab dua nrog lub zog ua luam dej ntau dua. Cov pigments tuab heev yuav tsum muaj qhov me me me thiab qhov me me particle tis.
2. Cov yam ntxwv sinking ntawm titanium dioxide pigments
Thaum cov khib nyiab hauv lub tank electrophoresis nyob ib ncig ntawm 10 feem pua, cov xim yog yooj yim rau tog, yog li cov xim nyob rau hauv lub tank yuav tsum tau circulated tsis tu ncua kom muaj ib tug uniform lub xeev. Qee cov pigments nrog cov txheeb ze siab ceev, xws li alkali lead silicate thiab strontium chromate, thiab qhov nyuaj rau disperse pigments, titanium dioxide yog nquag tog. Kev kho qhov sib piv ntawm cov xim rau lub hauv paus tuaj yeem txo qhov kev xav ntawm lub dab dej, xws li qhov sib piv ntawm cov xim rau cov khoom siv hauv paus yuav tsum tsis txhob ntau dua 2: 1. Ntxiv qee cov av nplaum dawb los yog 0.75 feem pua ethoxy fatty amine thiab non-ionic surfactant nyob rau hauv cov mis ntawm electrophoresis xim tuaj yeem txhim kho qhov tsis zoo ntawm lub dab dej. 3.
3. Dej-soluble ntsev cov ntsiab lus ntawm pigments
Soluble barium, calcium thiab zinc ntsev yog ib qho yooj yim rau react nrog dej-soluble resin thiab ua rau viscosity nce, uas cuam tshuam rau stability ntawm cov xim nyob rau hauv lub tank, yog li cov dej-soluble ntsev cov ntsiab lus ntawm pigment yuav tsum tau raws li cov kev cai.
4. Kev ruaj ntseg ntawm cov xim rau alkaline nruab nrab
Tus nqi pH ntawm cov khoom hauv lub tank electrophoresis yog nyob nruab nrab ntawm 7.5 thiab 9.0. Yog hais tias cov xim titanium dioxide muaj cov kua qaub seem, nws yog ib qho yooj yim rau neutralized nyob rau hauv nruab nrab alkaline, uas feem ntau muaj teeb meem cuam tshuam rau stability ntawm cov khoom nyob rau hauv lub electrophoresis tank. Tsis tas li ntawd, qee cov pigments tuaj yeem cuam tshuam nrog cov tshuaj alkaline, yog li kev saib xyuas yuav tsum tau them rau qhov no thaum xaiv cov xim.
