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Novel carbon-carbon composite material and method for its production

  • US 4,198,382 A
  • Filed: 09/01/1978
  • Issued: 04/15/1980
  • Est. Priority Date: 09/09/1977
  • Status: Expired due to Term
First Claim
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9. A method for producing a carbon-carbon composite material consisting of a matrix carbon and a fibrous reinforcing carbon, which comprises heat-treating cured novolac fibers at a temperature of from 250°

  • C. to less than 500°

    C. in a non-oxidizing atmosphere;

    shaping a resinous composition consisting of 30 to 90% by weight of the resulting heat-treated novolac fibers and 10 to 70% by weight, as the solids content after curing, of a phenolic resin;

    curing the shaped product;

    heating the cured product in a non-oxidizing atmosphere to at least 800°

    C. in such a manner that at least within a temperature range of 200°

    to 500°

    C., the heating is carried out at a rate of not more than 60°

    C. per hour; and

    firing the product at the final temperature reached.

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