Effect of temperature on the electrical property of epoxy composites with carbon nanotube

被引:28
作者
Gong, Shen [1 ,2 ]
Wang, Yang [2 ]
Xiao, Zhu [2 ]
Li, Zhou [2 ]
Wang, Zhi X. [1 ]
Lei, Ruo S. [3 ]
Zhu, Zheng H. [4 ]
机构
[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China
[2] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
[3] China Jiliang Univ, Coll Mat Sci & Engn, Hangzhou 310018, Zhejiang, Peoples R China
[4] York Univ, Dept Mech Engn, 4700 Keele St, Toronto, ON M3J 1P3, Canada
基金
中国国家自然科学基金; 加拿大自然科学与工程研究理事会; 中国博士后科学基金;
关键词
CNT/polymer composite; CNT structural distortion; Thermally assisted tunneling junctions; POLYMER COMPOSITES; STRAIN SENSOR; NANOCOMPOSITES; PIEZORESISTIVITY;
D O I
10.1016/j.compscitech.2017.06.012
中图分类号
TB33 [复合材料];
学科分类号
摘要
Eliminating the influence of environment temperature is critical for high-accuracy carbon nanotube polymer nanocomposites sensors. In this work, the temperature effects on the nanocomposite are studied by both experiment investigation and simulation calculation. Nearly constant resistance values were found at a CNT loading around 3 wt%. By considering the temperature effect and CNT structural distortion in the developed percolation network model, simulation results agree well with experimental data. On this basis, results show that the thermally assisted tunneling on CNT junctions and thermal expansion of polymer matrix are the two core mechanisms, relaxed CNT junctions in CNT/polymer nanocomposite depressed the temperature effect, and the influence of environment temperature could be significantly reduced by adjusting CNT loadings and choosing a matching polymer matrix. All of these findings will benefit for the design of high-accuracy sensors. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:48 / 54
页数:7
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