摘要
正硅酸乙酯水解可得有机硅聚合物,但产物分子量不高,成膜性差。用环氧树脂对其改性,制得物的涂膜成膜性优良,且大大缩短固化时间。研究了水解温度与时间,催化剂种类,溶剂用量和环氧树脂用量、反应温度与时间对改性物的影响。结果表明,水解温度50℃,时间3h,硫酸催化,乙醇用量35%,环氧树脂用量20%～50%,反应温度50℃,反应时间1h,涂膜性能优良。
Silicone polymer was obtained by hydrolysis of tetraethyl orthosilicate,but silicone polymer have low molecular weight and poor film.Silicone polymer modified by epoxy resin can improve film forming property and reduce the curing time.In this paper,the influence of the hydrolysis temperature and time,type of catalyst, amount of solvent and epoxy resin,reaction temperature and time on the properties of modified polymer was researched. The result shows that with the hydrolysis temperature of 50℃,hydrolysis time 3 hours,sulfuric acid catalyst,w（ethanol）=35%,w（epoxy resin）=20%～50%,reaction temperature 50℃,reaction time 1hours, the film have excellent performance.
出处
《精细与专用化学品》
CAS
2011年第12期22-27,共6页
Fine and Specialty Chemicals
基金
江西省自然科学基金(2009GZH0084)
关键词
正硅酸乙酯
环氧树脂
改性
tetraethyl orthosilicate
epoxy resins
modification
