摘要
二氧化钛是目前应用最为广泛的白色颜料,但由于其在紫外光照下表现出光催化活性,造成与之接触的有机基质出现龟裂、失色和粉化等现象,严重影响了涂层及复合材料的使用寿命,也限制了二氧化钛的应用范围,研究二氧化钛表面包覆及光活性评价对相关产业发展具有重要的意义。本文综述了近年来国内外二氧化钛表面包覆方法,主要包括无机包覆和有机包覆,详细介绍了二氧化钛颜料光活性评价方法的探索,并对上述评价方法的优缺点进行了简要对比,指出在二氧化钛表面实现可控、高效、针对性的包覆及建立可靠、适用、快速的光活性评价方法是二氧化钛颜料领域的主要研究方向。
Titanium dioxide（TiO2）is an important white pigment,which is widely used in paint,plastic,paper and rubber industries.However,TiO2 is able to catalyze the degradation of organic matrix under UV light,which causes unfavorable results in properties,such as discoloration,cracking,and chalking.This photo-catalytic behavior seriously limits the utilization of titanium dioxide in organic coatings.Hence,the surface coating and photo-activtiy evaluation of TiO2 is necessary and important.In this paper,surface treatment of inorganic or organic on TiO2 was reviewed.In detail,the evaluation methods of photo-activity of titanium dioxide pigment were also introduced,and the advantages and disadvantages of the methods were summarized.The realization of the controllable,efficient and targeted coating on TiO2 surface,and the development of the reliable,applicable and rapid method to assess the photo-activity of TiO2 pigment will be main research directions in this field.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2017年第12期4613-4621,共9页
Chemical Industry and Engineering Progress
基金
国家自然科学基金(21776068)
湖南省自然科学基金(2016JJ6002)
湖南省教育厅科学研究(16C0114、14A105)项目
关键词
二氧化钛
颜料
光活性
降解
包覆
评价
titanium dioxide
pigment
photo-activity
degradation
coating
evaluation
