Abstract
Composites based on vapor grown carbon fiber (VGCF) mats having a very long length exceeding 25cm in the fiber direction were fabricated and tested. Iron-based catalyst seeded ceramic substrates were used for the growth of the VGCF mats in a horizontal 6-in. tubular reactor. After 2800°C heat treatment, the fiber mats were made into epoxy composites using a resin transfer molding process for characterizations and thermal tests. The composite has a density of 1.57g/cc, a thermal conductivity of 510W/m-K which is higher than that of copper, and a thermal resistance of 0.72K/W.
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