Effect of functionalization of multi-walled carbon nanotube on the curing behavior and mechanical property of multi-walled carbon nanotube/epoxy composites

被引：91

作者：

Cui, Li-Jun ^{[1
]}

Wang, Yi-Bin ^{[2
]}

Xiu, Wen-Jun ^{[2
]}

Wang, Wen-Yi ^{[1
]}

Xu, Li-Hao ^{[1
]}

Xu, Xiao-Bing ^{[1
]}

Meng, Yan ^{[1
]}

Li, Lu-Yan ^{[1
]}

Gao, Jing ^{[1
]}

Chen, Li-Ting ^{[1
]}

Geng, Hong-Zhang ^{[1
]}

机构：

[1] Tianjin Polytech Univ, Sch Mat Sci & Engn, State Key Lab Hollow Fiber Membrane Mat & Membran, Tianjin 300387, Peoples R China

[2] Shengli Xinda Ind Grp Co Ltd, Dongying 257055, Shandong, Peoples R China

来源：

MATERIALS & DESIGN | 2013年 / 49卷

关键词：

Multi-walled carbon nanotube; Functionalization; Curing behavior; Tensile strength; Interfacial bonding; COVALENT FUNCTIONALIZATION; STRENGTH; MODULUS;

D O I：

10.1016/j.matdes.2013.01.050

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, multi-walled carbon nanotubes (MWCNTs) were functionalized to fabricate MWCNT/epoxy composites by incorporating MWCNTs into an epoxy. Cure behavior of composites was investigated by differential scanning calorimetry. Thermo-mechanical behavior of the composite was then evaluated by dynamic mechanical analysis. Tensile strength, elastic modulus and maximum elongation were obtained by tensile test using the CMT-4204 universal testing machine. A field-emission scanning electron microscope was also used to characterize the fracture mechanism of composites and the dispersion state of MWCNTs in the epoxy. The results showed that the introduction of MWCNTs decreased the activation energy of the reaction and promoted the cure reaction. The addition of MWCNTs, especially amino-functionalized MWCNTs, clearly improved the tensile strength. The functionalized MWCNTs improved the interfacial bonding and made the dispersion of MWCNTs homogeneous in the matrix, giving the composites present a better mechanical property. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：279 / 284

页数：6

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