This paper reports the measurement of the thermal conductivity of particle-laden polymeric thermal interface materials for three different particle volume fraction. The experimental data is further compared with the percolation model and effective medium theory. This paper also introduces a method of obtaining the contact resistance between the particles and the polymeric matrix by combination of percolation modeling and experimental data.

We also discuss the dependence of the mechanical response of these particle-laden polymers for different filler or particle loading. A novel mechanical length scale is defined to understand the mechanical response of these materials and is correlated to the viscosity of these materials.

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