Mechanical and physical properties of epoxy composites reinforced by vapor grown carbon nanofibers

被引:298
作者
Choi, YK
Sugimoto, K
Song, SM
Gotoh, Y
Ohkoshi, Y
Endo, M
机构
[1] Shinshu Univ, Fac Engn, Nagano 3808553, Japan
[2] Shinshu Univ, Fac Text Sci & Technol, Ueda, Nagano 3868567, Japan
关键词
vapor grown carbon; mixing; scanning electron microscopy; thermodynamic properties;
D O I
10.1016/j.carbon.2005.03.036
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Epoxy/vapor grown carbon nanofiber composites (VGCF) with different proportions of VGCF were fabricated by the in situ process. The VGCFs were well dispersed in both of the low and high viscosity epoxy matrices, although occasional small aggregates were observed in a high viscosity epoxy of 20 wt.%. The dynamic mechanical behavior of the nanocomposite sheets was studied. The storage modulus and the glass transition temperature (T-g) of the polymer were increased by the incorporation of VGCFs. The electrical and mechanical properties of the epoxy-VGCFs nanocomposite sheets with different weight percentages of VGCFs were discussed. The results were that both had maximum tensile strength and Young's modulus at 5 wt.% for both materials and reduced the fracture strain with increasing filler content. The electrical resistivity was decreased with the addition of filler content. Mechanical, electrical and thermal properties of low viscosity epoxy composites were resulted better than that of the high viscosity composites. (C) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2199 / 2208
页数:10
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