钛白粉表面包覆致密水合二氧化硅的制备工艺及性能研究  

Preparation Process and Performance Study of Dense Hydrated Silica Coated on the Surface of Titanium Dioxide

作　　者：李丽娜 Li Lina(Longbai Group Co.,Ltd.,Jiaozuo Henan 454150,China)

机构地区：[1]龙佰集团股份有限公司,河南焦作454150

出　　处：《山西化工》2024年第6期26-28,共3页Shanxi Chemical Industry

摘　　要：以氯化工艺制备的钛白粉粗品为原料,采用溶胶-凝胶法对钛白粉表面进行包覆水合二氧化硅的改性实验,以耐候性指标进行最佳工艺条件研究。研究结果:最佳工艺条件,老化时间180 min、pH值为10、温度90℃、搅拌转速200 r/min。ETM及颜料性能表征测试表明:最佳工艺条件下水合二氧化硅纳米薄膜能有效提高钛白粉耐候性能并改善颜料的相关性能。With the raw titanium dioxide prepared by chlorination process as raw material,the surface of titanium dioxide was coated with hydrated silica by sol-gel method,and the optimal process conditions were studied based on the weather resistance index.Research results the optimal process conditions include an aging time of 180 minutes,pH value of 10,temperature of 90℃,and stirring speed of 200 r/min.ETM and pigment performance characterization tests show that under the optimal process conditions,hydrated silica nanofilms can effectively improve the weather resistance of titanium dioxide powder and improve the related properties of pigments.

关 键 词：钛白粉 溶胶-凝胶法 包覆 水合二氧化硅 

分 类 号：O648.162[理学—物理化学]