Fabrication and mechanical properties of well-dispersed multiwalled carbon nanotubes/epoxy composites

被引：144

作者：

Guo, Peng ^{[1
]}

Chen, Xiaohong ^{[1
]}

Gao, Xinchun ^{[1
]}

Song, Huaihe ^{[1
]}

Shen, Heyun ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2007年 / 67卷 / 15-16期

关键词：

carbon nanotubes; polymer-matrix composites (PMCs); mechanical properties;

D O I：

10.1016/j.compscitech.2007.03.026

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Multiwalled carbon nanotubes (MWCNTs)/epoxy nanocomposites were fabricated by using ultrasonication and the cast molding method. In this process, MWCNTs modified by mixed acids were well dispersed and highly loaded in an epoxy matrix. The effects of MWCNTs addition and surface modification on the mechanical performances and fracture morphologies of composites were investigated. It was found that the tensile strength improved with the increase of MWCNTs addition, and when the content of MWCNTs loading reached 8 wt.%, the tensile strength reached the highest value of 69.7 MPa. In addition, the fracture strain also enhanced distinctly, implying that MWCNTs loading not only elevated the tensile strength of the epoxy matrix, but also increased the fracture toughness. Nevertheless, the elastic modulus reduced with the increase of MWCNTs loading. The reasons for the mechanical property changes are discussed. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：3331 / 3337

页数：7

共 16 条

[1]

Mechanical and electrical properties of a MWNT/epoxy composite [J].