钛白粉表面锆-硅二元包膜改性研究  

Study on Surface Modification of Titanium Dioxide by Zirconia-Silicon Binary Coating

作　　者：段海婷 侯清麟 李依林 秦严 饶居华 DUAN Haiting;HOU Qinglin;LI Yilin;QIN Yan;RAO Juhua(College of Life Science and Chemistry,Hunan University of Technology,Zhuzhou Hunan 412007,China)

机构地区：[1]湖南工业大学生命科学与化学学院,湖南株洲412007

出　　处：《包装学报》2023年第4期75-80,共6页Packaging Journal

基　　金：国家自然科学基金资助项目(21978076)。

摘　　要：以六偏磷酸钠为分散剂,二氧化锆为锆包覆剂,九水硅酸钠为硅包覆剂,采用中和法在金红石型钛白粉表面进行二元包膜,设计9组正交试验探究搅拌速度、反应温度、分散剂用量、陈化时间对金红石型钛白粉包膜后的性能影响。采用沉降实验、Zeta电位测试、扫描电子显微镜、高分辨透射电子显微镜等对包膜前后的金红石型钛白粉进行表征。研究结果表明,包膜后的金红石型钛白粉的分散性有显著提高;锆硅对金红石钛白粉复合包膜的优化工艺:搅拌速度为350 r/min、反应温度为60℃、分散剂质量分数为0.1%、陈化时间为80 min。The surface of rutile titanium dioxide was coated with sodium hexametaphosphate as dispersant,zirconium dioxide as coating agent and sodium silicate nine water as silicon coating agent.Nine orthogonal experiments were designed to investigate the effects of stirring speed,reaction temperature,dispersant dosage and curing time on the properties of rutile titanium dioxide coating.Sedimentation experiment,Zeta potential test,scanning electron microscopy,and high resolution mass transmission electron microscopy were adopted to characterize the rutile titanium dioxide before and after coating.The results showed that the dispersion of coated rutile titanium dioxide was significantly improved.It was found that when the stirring speed was 350 r/min,the reaction temperature was 60℃,the amount of dispersant was 0.1%,and the curing time was 80 min,the composite coating process of rutile titanium dioxide was optimized.

关 键 词：金红石型钛白粉 复合包膜 中和法 正交试验 二氧化锆 九水硅酸钠 

分 类 号：TQ621.12[化学工程—精细化工]