摘要
以TEOS为先体,在硫酸乙酯催化下初步水解,在碱性条件下,将水解液与钛酸四丁酯(TBOT)、甲基三乙氧基硅烷(MTES)按一定比例混合,继续缩聚反应至一定程度,得到高浓度改性SiO2溶胶,研究分析了水解、缩聚规律及pH、粒度、改性剂等因素与溶胶稳定性关系。
High concentration modified SiO2 sol was prepared from TEOS precursors through hydrolyzing under catalyzing of the sulphuric acatalectic ester, then being mixed and polycondensation at basic condition with the hydrolysate, TBOT and MTES in certain proportion. The law of hydrolyzation, polycondensation and the relation between the stability of sol and pH, granularity or modified additive etc was analyzed in the paper.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2005年第5期764-766,共3页
Journal of Functional Materials
基金
四川省重点科技资助项目(02GY029014)
关键词
溶胶
改性
稳定性
涂膜
Additives
Coatings
Hydrolysis
Modification
Optical microscopy
pH effects
Polycondensation
Sols
Stability
Transmission electron microscopy
