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Computational Investigation of the Effective Thermal Conductivity of Interpenetrating Network Composites

In this article, the effective thermal conductivity of composites with a network structure as reinforcement was calculated using finite element method (FEM), and a tetrakaidecahedron configuration was employed to represent the network structure. A spectrum of effective thermal conductivity of these composites was simulated. An analytical relationship among the effective thermal conductivity Keff, intrinsic thermal conductivities of the matrix and network reinforcement phase, and the volume fraction of the network was developed by fitting the numerical results. The simulation results have been validated by comparing with previous published experimental ones, and excellent agreement has been achieved.