Statistical continuum theory for the effective conductivity of carbon nanotubes filled polymer composites

作     者：Baniassadi, M. Laachachi, A. Makradi, A. Belouettar, S. Ruch, D. Muller, R. Garmestani, H. Toniazzo, V. Ahzi, S. 

作者机构：AMS Ctr Rech Publ Henri Tudor L-4002 Esch Sur Alzette Luxembourg Univ Strasbourg IMFS F-67000 Strasbourg France Univ Strasbourg ECPM F-67087 Strasbourg France Georgia Inst Technol Sch Mat Sci & Engn Atlanta GA 30332 USA 

出 版 物：《THERMOCHIMICA ACTA》 (热化学学报)

年 卷 期：2011年第520卷第1-2期

页      面：33-37页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0703[理学-化学] 

基　　金：Fond National de la Recherche (FNR) of the Grand Duche of Luxembourg 

主　　题：Polymer nanocomposites Statistical continuum theory Effective thermal conductivity Probability functions 

摘      要：The effective thermal conductivity of polymer nanocomposites filled with carbon nanotubes (CNTs) is studied using statistical continuum theory. A three-dimensional isotropic nanocomposite samples with randomly oriented CNTs are computer generated and used to calculate the effective thermal conductivity. The CNTs orientation, shape and spatial distribution are taken into account through two-point and three-point probability functions. The effect of filler content is studied by considering samples with filler contents vary form 1 to 10 wt%. The predicted effective conductivity is compared to our experiment, where the polymer matrix is taken to be poly(methyl methacrylate) (PMMA) filled with multiwalled carbon nanotubes (MWCNTs). Relative to the pure poly(methyl methacrylate) both the modeling and the experiment show an increase of the thermal conductivity as function of the MWCNTs volume fraction. However, the predicted results overestimate the experimental data, which might due the CNTs agglomerations. Therefore, the predicted effective conductivities have been compared to experimental results in order to estimate the volume fraction of CNT agglomeration. (C) 2011 Elsevier B.V. All rights reserved.