Process for forming carbon-carbon composite

Details Process for forming carbon-carbon composite Process for forming carbon-carbon composite

1989-12-05

1997-11-11

Lovering, Richard D.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Controlling varying temperature or plural heating steps

25218311, 526285, 526902, 428408, C01B 3100

Patent

active

056860277

ABSTRACT:
A novel polyphenylene resin is formed by the polycyclotrimerization of vinylethynylbenzene, diethynylbenzene and phenylacetylene. Polymerization is carried out under conditions which result in the retention of unreacted vinyl groups from the vinylethynylbenzene component, which are then susceptible to crosslinking. The polymer is useful in the formation of high-performance carbon-carbon composites, producing an unusually high char yield with advantageous handling and processing characteristics.

REFERENCES:
patent: 2404392 (1946-07-01), Maximoff
patent: 3300456 (1967-01-01), Hay
patent: 3933957 (1976-01-01), White
patent: 4108942 (1978-08-01), Chalk et al.
Bracke:"Synthesis of Soluble, Branched Polyphenyls", J. of Polymer Science: Part A-1, vol. 10, 2097-2101 (1972).
Bracke:"Polymers Containing Benzene Chains", Chem. Abstracts, vol. 79, 1973, p. 20,5878h.
Simionescu et al:"Polymerization of Acetylenic Derivatives.XXX Isomers of Polyphenyl-Acetylene", J. of Polymer Science:Polymer Chemistry Edition, vol. 15, 2497-2509(1977).

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