Preparation of talc-TiO2 composite white pigment and its application in coating
AO Weihua
DING Hao
SHEN Kai
Abstract：A kind of composite white pigment was prepared using the talc as cores and coating on the surface by TiO2 by means of mechano-chemical method.The properties and structure of talc-TiO2 composite white pigment were characterized,and its application in coating was studied.The results show that TiO2 particles tightly coates talc particles' surface.The size of composite particles distributes evenly.The composite particles has a similar pigment properties like titanium dioxide.The hiding power rates two composite powders,contenting TiO2 of 60％ and 70％,respectively reach 82％ and 98.9％ of titanium dioxide.When the amount of pigment is added to 15％～20％,the contrast ratio of these two kinds of composite pigment exceeds the value formulated by the national standard grade index required (≥0.90)and quality indexes (≥ 0.93),and composite powders of titanium dioxide have a considerable ultraviolet absorption capacity.
Keywords：talctitanium dioxidewhite pigmentcoating
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：4( 19-22 )