Preparation and characterization of epoxy/SiO2 nanocomposites by cationic photopolymerization and sol-gel process

被引：15
作者：
Bi, Yu-Tie [1 ,2 ,3 ]
Li, Zhen-Jiang [1 ,2 ,4 ]
Liang, Wei [1 ,2 ,4 ]
机构：
[1] Southwest Univ Sci & Technol, Joint Lab Extreme Condit Matter properties, Mianyang 621010, Sichuan, Peoples R China
[2] CAEP, Res Ctr Laser Fus, Mianyang 621010, Sichuan, Peoples R China
[3] Southwest Univ Sci & Technol, Coll Sci, Mianyang 621010, Sichuan, Peoples R China
[4] CAEP, Sci & Technol Plasma Phys Lab, Res Ctr Laser Fus, Mianyang 621900, Sichuan, Peoples R China
来源：
POLYMERS FOR ADVANCED TECHNOLOGIES | 2014年 / 25卷 / 02期
关键词：
nanocomposites; epoxy; nano-SiO2; cationic photopolymerization; sol-gel process; HYBRID MATERIALS; COATINGS; SILICA;
D O I：
10.1002/pat.3219
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Epoxy/SiO2 nanocomposite materials were prepared by cationic photopolymerization and sol-gel process using a novel epoxy oligomer (EP-Si(OC2H5)(3)) prepared by 3-isocyanatopropyltriethoxysilane (IPTS)-grafted bisphenol A epoxy resin and tetraethyl orthosilicate as inorganic precursor. The chemical structures of EP-Si(OC2H5)(3) were characterized by Fourier transformed infrared spectroscopy. Transmission electron microscopy showed that the in situ generated nano-SiO2 dispersed uniformly in the EP matrix, and its average diameter is around 40nm. The relationship between nanocomposite materials' thermal/mechanical properties and nano-SiO2 introduced were studied by thermogravimetric analysis, dynamic mechanical analysis, and impact strength test. The results showed that the nanocomposite materials' thermal and mechanical properties improved a lot with increase of the SiO2 content. Copyright (c) 2013 John Wiley & Sons, Ltd.
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收藏
页码：173 / 178
页数：6
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