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Fiber-reinforced syntactic foam composites and method of forming same

  • US 4,595,623 A
  • Filed: 05/07/1984
  • Issued: 06/17/1986
  • Est. Priority Date: 05/07/1984
  • Status: Expired due to Term
First Claim
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1. A fiber-reinforced syntactic foam composite having a specific gravity less than 1.0 and a coefficient of thermal expansion of about 25×

  • 10-6 in/in/°

    F. (45×

    10-6 cm/cm/°

    C.) or less and being suitable for use in the outer space environment, the composite being prepared from an admixture comprising a heat curable thermosetting resin, hollow microspheres having a diameter in the range of about 5 to about 200 micrometers and fibers having a length less than or equal to 250 micrometers.

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