摘要
采用均匀实验设计法优化实验条件,以分散剂、包膜量、pH值、包膜的速度为实验变量,用溶胶-凝胶法对金红石型钛白粉进行了氧化锆包膜。通过扫描电镜(SEM)和透射电镜(TEM)的检测,对包覆机制和包膜效果进行分析,得到了金红石型钛白粉表面单锆包膜的优化工艺条件。结果表明:在分散剂为0.19%,包膜量为1%,体系pH为9,滴加速度为6滴.min-1条件下,包覆效果较好;在该工艺条件下,金红石型钛白粉表面能形成连续、均匀、致密的膜层。
Rutile titanium dioxide was coated with zirconium oxide by sol-gel method based on the uniform experimental design method to optimize the experiment condition with the dispersant, coated quantity, pH value and the capsule speed as experimental variables. The process conditions of optimization of rutile titanium dioxide coated with ZrO2 was obtained, the coated mechanism and coated results were analyzed by the scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. The results indicatedthat the coated effect was improved obviously when the conditions of the amount of dispersant was 0.19%, coating quantity was 1%, the pH value was 9, and the speed of drops was 6 drops·min^-1. The surface of rutile titanium dioxide could form continuous, well-distributed and compact membrane layer under the process conditions.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2013年第3期411-417,共7页
Chinese Journal of Rare Metals
基金
国家自然科学基金项目(51174085)
湖南省战略性新兴产业项目(2011GK4055)
湖南工业大学自然科学研究项目(2012HZX03)
湖南省校级大学生研究性学习和创新性实验计划项目资助
