Accession Number:

ADD009392

Title:

Diethynylbenzene-Ethylnylpyrene Copolymers.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s):

Report Date:

1982-04-13

Pagination or Media Count:

6.0

Abstract:

This invention relates to aromaticacetylene compounds and their utilization as ablative materials for re-entry vehicles. In a more particular aspect, this invention relates to the synthesis of diethynylbenzene-ethynylpyrene copolymers and their use as high char yielding matrix resins for carbon-carbon composites. The increased use and interest in the operation of re-entry vehicles has generated a considerable research effort in an attempt to develop structural materials that exhibit high strength and resistance to the stresses and strains encountered by space vehicles during their re-entry regime. Rocket and missile components, such as turbine blades, nozzles, vanes, partitions and, especially, nose cones, are very vulnerable to the stress and strain encountered during their re-entry environment. These components require structural materials capable of surviving those stresses and the elevated temperatures occurring during re-entry.

Subject Categories:

  • Polymer Chemistry
  • Laminates and Composite Materials
  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE