Preparation Process and Performance Study of Dense Hydrated Silica Coated on the Surface of Titanium Dioxide
With the raw titanium dioxide prepared by chlorination process as raw material,the surface of titanium dioxide was coated with hydrated silica by sol-gel method,and the optimal process conditions were studied based on the weather resistance index.Research results the optimal process conditions include an aging time of 180 minutes,pH value of 10,temperature of 90℃,and stirring speed of 200 r/min.ETM and pigment performance characterization tests show that under the optimal process conditions,hydrated silica nanofilms can effectively improve the weather resistance of titanium dioxide powder and improve the related properties of pigments.
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