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Process for making carbon foam

  • US 6,033,506 A
  • Filed: 09/02/1997
  • Issued: 03/07/2000
  • Est. Priority Date: 09/02/1997
  • Status: Expired due to Term
First Claim
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1. A process of producing carbon foam comprising:

  • selecting an appropriate mold shape;

    introducing pitch to an appropriate level in a mold;

    purging air from the mold;

    heating the pitch to a temperature sufficient to coalesce the pitch into a liquid;

    applying an inert fluid at a static pressure up to about 1000 psi;

    heating the pitch to a temperature sufficient to cause gases to evolve and foam the pitch;

    heating the pitch to a temperature sufficient to coke the pitch; and

    cooling the foam to room temperature with a simultaneous release of pressure to produce a carbon foam.

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