Mechanical and thermal properties of epoxy nanocomposites reinforced with amino-functionalized multi-walled carbon nanotubes

被引：127

作者：

Chen, Xianhong ^{[1
]}

Wang, Jianfeng ^{[1
]}

Lin, Ming ^{[1
]}

Zhong, Wenbin ^{[1
]}

Feng, Tao ^{[1
]}

Chen, Xiaohua ^{[1
]}

Chen, Jianghua ^{[1
]}

Xue, Feng ^{[2
]}

机构：

[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Peoples R China

[2] S China Univ Technol, Coll Mat Sci & Engn, Guangzhou 510641, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 492卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

multi-walled carbon nanotubes; functionalization; epoxy resin; mechanical properties; thermal properties;

D O I：

10.1016/j.msea.2008.04.044

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The functionalized multi-walled carbon nanotubes (MWNTs) with amino groups were prepared after such steps as oxidation, the addition of carboxyalkyl radicals, acylation and amidation. Besides oxidated-MWNTs/epoxy nanocomposites, amino-functionalized MWNTs/epoxy nanocomposites, in which MWNTs with amino groups acted as a curing agent and covalently attached into the epoxy matrix, were fabricated. Subsequently, the effects of MWNT content on the mechanical and thermal properties for the two systems were investigated. It is found that both the tensile strength and impact strength enhance with the increase of MWNT addition, and the most significant improvement of the tensile strength (+51 %) and especially impact strength (+93%) is obtained with amine-treated MWNTs at an 1.5 wt.% content. Moreover, the thermal stability of the nanocomposites also distinctly improves. The improvement of the properties of the amine-treated MWNTs system is more remarkable than those of o-MWNTs system. The reasons for these changes were discussed. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.

引用

页码：236 / 242

页数：7

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