Effective thermal conductivity of composite materials containing pore and interface thermal resistance

Based on the laws of the minimal thermal resistance and the specific effective thermal conductivity, the effective thermal conductivity of solid-solid phase composite material containing interface thermal was established by the modifying the series-parallel connection model. Thus the solid-solid phase composite material was viewed as the single phase solid material that the thermal conductivity is equal to the effective thermal conductivity. Then, the thermal conductivity of the composite material containing pore was derived by the heat transfer model of a single phase material containing pore. The effective thermal conductivity of composite materials containing pore and interface thermal resistance was deduced. And the effects, such as pores, particle size and volume fraction of dispersed phase on thermal conductivity were investigated. The calculation values agree well with the experimental results obtained from the other literature which show the method is effective.