期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 40, 期 11, 页码 1792-1797出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2009.08.019
关键词
Polymer-matrix composites; Thermal properties; Numerical analysis; Thermal analysis
资金
- National Natural Science Foundation of China [10776014]
- China Post-doctoral Science Foundation [20080431103]
- High Technical Foundation of Jiangsu Province of China [BG2007047]
- Natural Science Foundation of liausu Province of China [BK2008407, BK2007596]
- Jiangsu Planned Projects for Postdoctoral Research Funds [0801023B]
- Special Foundation for Young Scholars of Nanjing University of Science and Technology [AB41339]
- Starting Foundation for Scholars of Nanjing University of Science and Technology [AB41980]
The influence of carboxylic functionalization (COOH-functionalization) of multi-walled carbon nanotubes (MWCNTs) on the thermal properties of MWCNTs/diglycidyl ether of bisphenol A/2-ethyl-4-methylimidazole (MWCNTs/DGEBA/EMI-2,4) nanocomposites was studied using DSC and TGA. The results showed that, at the initial curing stage, activation energy E decreases with increasing curing degree a, moreover, COOH-functionalization of MWCNTs decreases E. Therefore, COOH-functionalization of MWCNTs does not change the autocatalytic cure reaction mechanism of MWCNTs/DGEBA/EMI-2,4 system and has catalytic effect on the curing process. Then, at the later curing stage, carboxylated MWCNTs (COOH-MWCNTs) increase the inflexions of the curves of E vs. cc less than purified MWCNTs, indicating that COOH-MWCNTs delay the vitrification less than purified MWCNTs. Furthermore, COOH-functionalization of MWCNTs also improves the thermal stability of nanocomposites. (C) 2009 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据
分享论文
