Synthesis and Characterization of Modified Epoxy Resins by Silicic Acid Tetraethyl Ester and Nano-SiO2

被引：0
|
作者：
李海燕
张之圣
机构：
[1] China
[2] Tianjin 300072
[3] School of Electronic Information Engineering Tianjin University
[4] School of Electronic Information Engineering
来源：
Transactions of Tianjin University | 2004年 / 02期
关键词：
epoxy resin; silicic acid tetraethyl ester(TEOS); nano-SiO2; IR; thermogravimetric analysis;
D O I：
暂无
中图分类号：
O614 [金属元素及其化合物];
学科分类号：
摘要：
A kind of modified epoxy resins was obtained by condensation of epoxy resin with silicic acid tetraethyl ester（TEOS） and nano-SiO2. The reactions were performed with hydrochloric acid as a catalyst at 63 ℃. The structure, thermal stability and morphological characteristics of the modified epoxy resins were studied through infrared spectra（FT-IR） analysis, thermogravimetric（TG） analysis and scanning electron microscopy respectively. It has been found from the IR and TG study that modified epoxy resins have greater thermal stability than epoxy resins, and its thermal stability has been improved by the formation of inter-crosslinked network structure. The modified epoxy resins exhibit heterogeneous morphology and heterogeneity increases with more TEOS feeding, which in turn confirms the formation of inter-crosslinked network structure in modified epoxy resins.
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页码：105 / 108
页数：4
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