Preparation of Talc-TiO2 composite particles by mechano-chemical method and its pigment performance
AO Weihua
DING Hao
SHEN Kai
Abstract：In water medium,talc-TiO2 composite particles were made with mechano-chemical method by ways of talcin grinding and mixed grinding of the talc and TiO2.The factors on preparing process of the talc-TiO2 composite particles were studied and the structure and pigment properties of it were characterized.The results show that with the mechanical energy gained on the surface of talc particles,the particle size of it decreases firstly,then increases,and decreases slightly at last,which meets the composite requirements with TiO2.TiO2 particles tightly coates talc particles' surface and the composite particles has a similar pigment properties like titanium dioxide.Talc-TiO2 composite powders contained 70％ rutile TiO2 have the hiding power of 10.45 g/m2,and the ones contained 66％ have the hiding power of 12.50 g/m2.Tiding power rates of the two kinds of composite powders are 105.26％ and 88％,respectively,ofrutile TiO2,and the ultraviolet absorption capacity of composite powders are the same as titanium dioxide.
Keywords：talctitanium dioxidecomposite particlespigment property
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 50-56 )