Composite of Wollastonite and Rutile TiO2 Particles and Their Pigment Properties
The particle combination of wollastonite and rutile TiO2(R-TiO2)by dry grinding and its pigment properties and particle microstructure were studied.The results show that wollastonite/R-TiO2 composite pigment has the same pigment properties as titanium dioxide,the hiding power of 40%TiO2 composite pigment is 14.04g/m2,which is 90.10%of pure TiO2;wollastonite/R-TiO2 composite pigment has strong UV absorption,which is consistent with R-TiO2 The wollastonite/R-TiO2 composite pigment is characterized by the uniform and firm coating of TiO2 on the surface of wollastonite,and the combination of wollastonite and TiO2 is realized by the dehydroxylation reaction on the particle surface.
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