High thermal conductivity carbon/carbon honeycomb structure

Details High thermal conductivity carbon/carbon honeycomb structure High thermal conductivity carbon/carbon honeycomb structure

1997-10-09

2000-09-05

Medley, Margaret

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

428118, 428408, B32B 312

Patent

active

061140066

ABSTRACT:
The invention provides a method for producing carbon/carbon composite honeycomb structures which have not only the mechanical properties associated with carbon/carbon materials but high thermal conductivities (>200 w/m-k) as well. A honeycomb structure comprising a low-modulus pitch precursor carbon fiber composite is heated or carbonized to drive off volitiles, densified at low pressure by CVD/CVI to provide a graphitizable carbon matrix, and then heat treated to graphitize both the carbon fiber and the carbon matrix. The resulting honeycomb structure has a high thermal conductivity with an increased fiber modulus and may be used, for example, for making heat transfer devices.

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