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US 5,288,438 AGranted
Carborane catalyzed graphitization of polyarylacetylene (PAA)
AssigneeThe Aerospace Corporation
InventorsRoss W. Kobayashi, Rafael de J. Zaldivar
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Abstract
Carborane is used to catalyze the graphitization of polyarylacetylene (PAA) in order to form a uniform matrix microstructure both in bulk and as a composite matrix.
Claims1
A process for producing a carbon-carbon composite comprising a carbon matrix reinforced by carbon fibers, the method comprises the steps of:
- a. preparing the matrix from a blend of polyarylacetylene (PAA) and carborane (C.sub.2 B.sub.10 H.sub.12) in a concentration of 1 to 5 boron weight percent solution in a solvent;
- b. orienting the carbon fibers within the blend to provide a precursor for the carbon-carbon composite;
- and
- c. curing and heat treating the precursor in a non-reactive atmosphere up to 2500 degrees Centigrade to produce the carbon-carbon composite.
1 more element
Dependencies are inferred from the claim text.