钛白粉表面结构与水分散性间的构效关系研究  

Structure-property relationship between surface structure and water dispersity of titanium dioxide

作　　者：全远霞 向泉锦 全学军[1] 柯良辉 李礼 Quan Yuanxia;Xiang Quanjin;Quan Xuejun;Ke Lianghui;Li Li(College of Chemistry and Chemical Engineering,Chongqing University of Technology,Chongqing 400054,China;Pangang Group Vanadium&Titanium Resources Co.,Ltd.,Panzhihua 617000,Sichuan,China)

机构地区：[1]重庆理工大学化学化工学院,重庆400054 [2]攀钢集团钒钛资源股份有限公司,四川攀枝花617000

出　　处：《钢铁钒钛》2024年第2期35-41,共7页Iron Steel Vanadium Titanium

基　　金：重庆理工大学科学研究基金会(0115220003);重庆市教育委员会科技研究项目(KJQN20221118)。

摘　　要：钛白粉初品的水润湿分散性对无机包膜以及应用性能至关重要。以锌盐和铝盐处理的钛白初品为研究对象,研究钛白初品表面结构与水润湿分散性之间的关系。结果表明,采用锌盐处理剂获得的钛白初品球形度好、粒度小,铝盐处理的钛白初品呈长条状,具有更丰富的表面羟基、更高的表面能以及更厚的双电层结构。此外,在分散剂加量为0.2%,TiO2浓度为700 g/L时,锌盐初品浆料黏度946 mPa·s,Zeta电位为-23.3 mV,铝盐初品浆料黏度512 mPa·s,Zeta电位为-31.2 mV。表明铝盐初品的浆料黏度更低,分散性更好,水润湿分散性更优异。对不同盐处理钛白初品表面结构进行分析研究,建立表面结构与水分散性之间的构效关系,为开发高端钛白粉提供借鉴和思路。The wettability and dispersion of titanium dioxide in water is very important for the inorganic coating and application performance.In this study,the relationship between the surface structure and the water wettability and dispersion of titanium dioxide treated with zinc and aluminum salts was studied.The results show that the initial titanium dioxide treated with zinc salt has good sphericity and small particle size,and the initial titanium dioxide treated with aluminum salt has a long strip shape,with richer surface hydroxyl,higher surface energy and thicker electric double layer structure.In addition,when the dosage of dispersant was 0.2%and the concentration of TiO_2 was 700 g/L,the viscosity of the initial zinc salt slurry was 946 mPa·s,and the zeta potential was-23.3 mV.The viscosity of the initial aluminum salt slurry was 512 mPa·s,and the zeta potential was-31.2 mV.The results show that the slurry viscosity of the aluminum salt is lower,the dispersion is better,and the water wetting dispersion is better.The surface structure of titanium dioxide treated with different salts was analyzed,and the structureactivity relationship between surface structure and water dispersion was established,which provided reference and ideas for the development of high-end titanium dioxide.

关 键 词：二氧化钛 盐处理剂 表面能 黏度 分散性 

分 类 号：TF823[冶金工程—有色金属冶金]