Physics – Condensed Matter – Materials Science
Scientific paper
2002-05-20
Applied Physics Letters 80, 2767 (2002)
Physics
Condensed Matter
Materials Science
Scientific paper
10.1063/1.1469696
Single-wall carbon nanotubes (SWNTs) were used to augment the thermal transport properties of industrial epoxy. Samples loaded with 1 wt% unpurified SWNT material show a 70% increase in thermal conductivity at 40K, rising to 125% at room temperature; the enhancement due to 1 wt% loading of vapor grown carbon fibers is three times smaller. Electrical conductivity data show a percolation threshold between 0.1 and 0.2 wt% SWNT loading. The Vickers hardness rises monotonically with SWNT loading up to a factor of 3.5 at 2 wt%. These results suggest that the thermal and mechanical properties of SWNT-epoxy composites are improved, without the need to chemically functionalize the nanotubes.
Biercuk Michael J.
Fischer J. E.
Hyun J. K.
Johnson Alan T.
Llaguno M. C.
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