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The thermal and mechanical properties of graphite foam/epoxy resin composites

2012; Elsevier BV; Volume: 40; Linguagem: Inglês

10.1016/j.matdes.2012.04.026

0261-3069

Xiunan Chen, Yonggen Lü, Xin Zhang, Fangjia Zhao,

Radiative Heat Transfer Studies

A series of epoxy resin (EP) filled graphite foam (GF) composites were prepared to explore a new material with good heat transfer property. The effects of the mass fraction of EP and the network structure of GFs on the thermal diffusivity and the compression strength of the composites were investigated. The thermal diffusivity of the GF/EP composite with EP mass fraction of 91.45% was raised to 6.541 mm2/s, which was 45.7 times higher than the pure EP. The thermal conductivity reached to 14.67 W/(m K), which was 43.1 times higher than the pure EP. The compression strength of the GF/EP increased 55% above the value of pure EP. In addition, the thermal diffusivity of GF/EP increased with the decrease of the mass fraction of EP. A model was formulated to calculate the pressure needed for a mass fraction of EP.