钢铁钒钛2025，Vol.46Issue(4)：35-42,8.DOI:10.7513/j.issn.1004-7638.2025.04.005
基于光电流法的钛白粉耐候性快速评价方法研究
Research on the rapid evaluation method of weather resistance of titani-um dioxide based on photocurrent method
摘要
Abstract
Titanium dioxide has relatively high photocatalytic activity,and it is usually necessary to carry out post-treatment to suppress the photocatalytic activity and improve the weather resistance abil-ity.However,the evaluation of the effect of titanium dioxide photocatalytic activity on the weather res-istance of the substrate usually takes a long time,and it is difficult to meet the need of rapid detection feedback to guide process adjustment in the actual production process.Based on the photocurrent test method and the carbon black undertone method,combined with the accelerated UV aging results of polypropylene(PP)resin and polyvinyl chloride(PVC)resin systems with addition of different titani-um dioxide,the practicability of the photoelectric current testing method as a rapid evaluation means for the weather resistance of titanium dioxide in PP and PVC systems was verified.The results show that,taking the gloss retention rate(Gr)as the quantitative index of aging degree,the photocurrent and dis-persion parameters can better quantitatively predict the weather resistance of different titanium dioxide in PP and PVC systems.This technology can provide guidance for the rapid evaluation methods devel-opment of weather resistance ability of titanium dioxide in different systems,and then provide support for the optimization of titanium dioxide production process.关键词
钛白粉/耐候性/光电流/分散性/聚丙烯/聚氯乙烯Key words
titanium dioxide/weather resistance/photocurrent/dispersion/polypropylene/polyvinyl chloride分类
矿业与冶金引用本文复制引用
YUAN Haomin,ZHONG Shan,TANG Siyang,ZHOU Xuemei,LI Hongjiao,LU Feng,LIANG Bin..基于光电流法的钛白粉耐候性快速评价方法研究[J].钢铁钒钛,2025,46(4):35-42,8.基金项目
四川省重点研发计划(2022YFS0448). （2022YFS0448）
