This paper explores the potential for herring-bone graphite nanofibers elastomeric matrix to be used as a thermal interface material for electronic cooling applications. High aspect ratio herring-bone graphite nanofiber (GNF) materials were grown by means of catalytic decomposition of hydrocarbons. The GNF produced show a mean width of 0.4 μm with lengths of 10-100 μm, and a measured surface area of 46.2 m~2/g with a resistivity of 2.7 × 10~(-1) Ωm. The morphological aspects of the graphite were examined by transmission electron microscopy. The GNF were dispersed in an elastomeric matrix at various weight percentages. Furthermore, GNF were also used as a matrix material and infused with phase change material and particles, again at various weight percentages. Both types of resulting nanocomposites' thermal conductivity, impedances and diffusivity were examined using the heat stack D5470 standard.
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