离子交换法制备硅溶胶工艺的优化  

Optimization Process of Silica Sol Prepared by Ion Exchange Method

作　　者：郑典模[1] 陈创[1] 屈海宁[1] 

机构地区：[1]南昌大学环境与化学工程学院,南昌330031

出　　处：《硅酸盐通报》2014年第11期2863-2867,共5页Bulletin of the Chinese Ceramic Society

摘　　要：文章讨论以水玻璃为原料,采用正交法和回归模型优化硅溶胶制备工艺。在硅溶胶增长阶段,当硅溶胶滴加液滴加速率0.555 m L/cm3·min,反应时间7 h,滴加液与底液用量比20∶1时,所得碱性硅溶胶产品平均粒径在7.7~8.3 nm之间,浓缩后产品中SiO2的质量浓度可达35%,产品存放一年未见凝胶形象,稳定性好。Taking water glass as materials,using the orthogonal method and regression model to optimize the process. In the silica sol phase of growth,using silica sol solution dropping rate 0. 555 m L / cm2·min,reaction time 7 h,dosage of liquor and liquor ratio 20∶ 1 for the best experimental conditions. Under these conditions the alkaline silica sol products average grain diameter is between 7. 7-8. 3 nm,the concentration of SiO2 in above 35%,products stored for one year and no gel image,and have good stability.

关 键 词：正交法 回归模型 离子交换法 硅溶胶 

分 类 号：O648[理学—物理化学]