Carbon nanotubes/polydimethylsiloxanes systems for thermal management of miniaturized electronic components.
2010
The thermal performances of nanocomposite layers formed by Single-walled Carbon Nanotubes (SWCNT)
dispersed in 2 different kind of polydimethyl-siloxane (PDMSO) matrices has been investigated by measuring
the thermal resistance under conditions similar to the ones used for thermal management in microelettronics. A
series of nanocomposite samples with thickness in the range 25 μm - 1 cm have been tested. The nanocomposites
were prepared varying the amounts of nanotubes embedded in the matrix (from 0.1 to 5%w). In some cases also
microsized graphites were mixed to the nanotube’s fillers. For 25 micron thick layers, the thermal resistance of
the neat silicone specimen can be reduced of 54% with the addition of 2%w carbon nanotubes. The variation
of thermal conductivity as a function of the SWCNT’s loading is reported and discussed. Furthermore the
dispersion’s effects of the nanotubes in the layers and the effects on the realization of a net-like system have been
investigated
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