Study of SiO2 nanoparticles on the improved performance of epoxy and fiber composites

被引:105
作者
Zheng, YP
Ning, RC
Zheng, Y
机构
[1] Univ New Brunswick, Dept Chem Engn, Fredericton, NB E3B 5A3, Canada
[2] Northwestern Polytech Univ, Dept Chem Engn, Xian 710072, Peoples R China
关键词
nanoparticles; epoxy resin; positron annihilation technique;
D O I
10.1177/0731684405043552
中图分类号
TB33 [复合材料];
学科分类号
摘要
SiO2-epoxy and SiO2-glass-fiber epoxy nanocomposites were prepared to study the influence Of SiO2 nanofiller particles on the mechanical properties. The size and concentration of free volume were tested by positron annihilation spectroscopy. The, experimental results demonstrate that uniform dispersion of nanoparticles play an important role in promoting the comprehensive performance of nanocomposites. 115, 13, and 60% increase have been achieved at 3 wt% of nanoparticles for the tensile strength, tensile modulus, and impact strength, respectively. The studies on the effects of SiO2 nanoparticles on the properties of glass-fiber composites show that the SiO2 nanoparticles can generally promote their properties especially the bend strength that ends up with 69.4% enhancement. This is attributed to the promoted bonding forces between glass fibers and matrices owing to the presence of nanoparticles.
引用
收藏
页码:223 / 233
页数:11
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