Critical parameters of carbon nanotube reinforced composites for structural health monitoring applications: Empirical results versus theoretical predictions
Critical parameters of carbon nanotube reinforced composites for structural health monitoring applications: Empirical results versus theoretical predictions
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DOI：
10.1016/j.compscitech.2018.12.010
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发表时间：
2019-02-08
影响因子：
9.1
通讯作者：
Urena, Alejandro
中科院分区：
文献类型：
--
作者：
Sanchez-Romate, Xoan F.;Artigas, Joaquin;Urena, Alejandro
本文报道了碳纳米管（CNT）纳米复合材料的电和机电性能决定的关键参数的调查。为此，提出了一种新的分析模型，基于隧道机制的碳纳米管。模型中引入了三个分散参数来反映碳纳米管的聚集状态。对通过环形搅拌和三辊研磨制造的CNT纳米复合材料进行了显微镜分析和电学和应变监测测试。据观察，电导率的色散过程以及应变灵敏度，测量的规范因子（GF）的影响很大。通常，良好分散的材料具有较高的电导率和GF。在这方面，总比率具有普遍影响。实验数据和理论预测允许的相关性的分散参数与电气性能的制造程序，以开发高度敏感的纳米复合材料。这证明了所提出的模型的潜力和适用性。
This paper reports on an investigation of the critical parameters which determine the electrical and electromechanical properties of carbon nanotube (CNT) nanocomposites. For this purpose, a novel analytical model, based on the tunnelling mechanisms of CNTs, is proposed. Three dispersion parameters are introduced in the model to reflect the CNT aggregation state. Microscopy analysis and electrical and strain monitoring tests were carried out on CNT nanocomposites manufactured by toroidal stirring and three roll milling. It is observed that electrical conductivity is greatly affected by dispersion procedure as well as strain sensitivity, measured by the gauge factor (GF). Generally, well dispersed materials have higher conductivities and GF. In this regard, the aggregate ratio has a prevalent effect. Experimental data and theoretical predictions allow the correlation of dispersion parameters given by manufacturing procedures with electrical properties to develop highly sensitive nanocomposites. This demonstrates the potential and applicability of the proposed model.