Author(s)

Deepti Chauhan, Nilima Singhvi, Ramvir Singh

Department of Physics, Heat Transfer Laboratory, University of Rajasthan, Jaipur, India.

The present paper deals with the effect of geometry of filler particles on the effective thermal conductivity for polymer composites. In the earlier models, less emphasis has been given on the shape of filler particles. In this paper, expressions for effective thermal conductivity has been derived using the law of minimal thermal resistance and equal law of the specific equivalent thermal conductivity for three different shapes i.e. spherical, elliptical and hexagonal of filler particles respectively. Calculated values of effective thermal conductivity for various samples using the derived expressions then compared with experimental data available and other models developed in the literature. The results calculated are in good agreement with the earlier experimental data and the deviation, is least in our expressions showing the success of the model.

Effective Thermal Conductivity; Polymer Composites; Minimal Thermal Resistance; Shape of Filler

D. Chauhan, N. Singhvi and R. Singh, "Effect of Geometry of Filler Particles on the Effective Thermal Conductivity of Two-Phase Systems," International Journal of Modern Nonlinear Theory and Application, Vol. 1 No. 2, 2012, pp. 40-46. doi: 10.4236/ijmnta.2012.12005.