In order to solve the problem that nano-TiO2 itself is easy to agglomerate and difficult to disperse,in this paper,water was used as the dispersion medium,and silane coupling agent KH-570(γ-methylacryloxy propyl trimethoxy silane)was used to modify the surface of nano titanium dioxide particles,and activation index,oleophilization degree,grafting rate,infrared spectrum analysis,X-ray diffraction analysis and other means were used to analyze and characterize.The results show that the optimal modification scheme is as follows:the amount of silane coupling agent KH-570 is 1.6％,the reaction temperature is 70℃,and the reaction time is 1.5h.Under these conditions,the activation index of nano-TiO2 was 94.51％,the lipophilic degree was 74.62％,and the grafting rate was 25.13％.
万方数据
维普
