Fracture model for the prediction of the electrical percolation threshold in CNTs/Polymer composites

2018, Volume 12, Issue 1

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Frontiers of Structural and Civil Engineering >> 2018, Volume 12, Issue 1 doi: 10.1007/s11709-017-0396-8

Fracture model for the prediction of the electrical percolation threshold in CNTs/Polymer composites

. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai, China.. Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai, China.. Institute of Continuum Mechanics, Leibniz-Universität Hannover, Germany.. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai, China

Accepted: 2017-07-05 Available online: 2018-03-08

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Abstract

In this paper, we propose a 3D stochastic model to predict the percolation threshold and the effective electric conductivity of CNTs/Polymer composites. We consider the tunneling effect in our model so that the unrealistic interpenetration can be avoided in the identification of the conductive paths between the CNTs inside the polymer. The results are shown to be in good agreement with reported experimental data.

Keywords

electrical percolation ; CNTs/Polymer composites ; fracture model ; electric conductivity ; tunnelling effects

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