VGCF composites

Table 4. Thermal conductivity (k, W/m K), density (p, g/cm ) and specific thermal conductivity (x/p) of various VGCF composites.

Table 5. Thermal conductivity and density of selected VGCF composites.

Composites fabricated with fixed catalyst VGCF can be designed with fibers oriented in preferred directions to produce desired combinations of thermal conductivity and coefficient of thermal expansion. While such composites are not likely to be cost-competitive with metals in the near future, the ability to design for thermal conductivity in preferred directions, combined with lower density and lower coefficient of thermal expansion, could warrant the use of such VGCF composites in less price sensitive applications, such as electronics for aerospace vehicles. 

The Fourier transform infrared (FTIR) spectrum ofthe PPy/VGCF composites (KBr pellet] showed that the PPy bands (conjugated double bond 1548 cm amines 1172 cm", etc.) are present in the spectrum of the composite electrode, indicating that PPy had... 

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