四羟基多面体倍半硅氧烷/环氧树脂复合体系的制备及性能研究  

The Preparation and the Properties of Hydroxyl Silsesquioxane/Epoxy Resin Composites

作　　者：张万里[1] 宋江选[1] 陈广新[1] 李齐方[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029

出　　处：《材料工程》2011年第3期87-90,共4页Journal of Materials Engineering

摘　　要：采用环己基三氯硅烷为反应物,乙腈为溶剂,通过水解缩合反应合成出纯净的环己基六聚笼型倍半硅氧烷,通过FT-IR,29Si-NMR对其结构等进行了表征;通过将合成的环己基笼型硅氧烷进行水解,生成了一种新的带有稳定羟基的硅氧烷,并对产物进行了表征;用带有稳定羟基的硅氧烷对环氧树脂进行改性,并对所形成的复合材料的热稳定性、介电性、表面疏水性进行了研究,结果显示随着加入的四羟基多面体倍半硅氧烷的量的增加,复合体系的热稳定性、介电性能、表面疏水性得到明显改善。Cyclohexyl silsesquioxane was synthesized by the hydrolytic condensation of cyclohexyl trichlorosi1ane in acetonitrile,and characterized by FT-IR and 29Si-NMR.The hydroxyl silsesquioxane was prepared by adding NMe4OH to the solution of cyclohexyl silsesquioxane in THF by controlling the suitable reaction condition,such as reaction time and the temperature.Epoxy resin was modified with hydroxyl silsesquioxane,and the thermal properties,dielectric properties and the hydrophobicity of the composites with different content of hydroxyl silsesquioxane were investigated with thermogravimetric analysis（TGA）,dielectric constant and contact angle analysis.It was experimentally shown that the thermal stability,the dielectric properties and the the hydrophobicity of the composites were improved with the increase of the content of hydroxyl silsesquioxane.

关 键 词：环己基笼型硅氧烷 四羟基多面体倍半硅氧烷 接触角 介电常数 

分 类 号：TB332[一般工业技术—材料科学与工程]