Method for rapid fabrication of fiber preforms and structural co

Details Method for rapid fabrication of fiber preforms and structural co Method for rapid fabrication of fiber preforms and structural co

1996-12-30

1999-02-16

Johnstone, Adrienne

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

4282937, 428408, B32B 1800, C01B 3100, C01B 3104

Patent

active

058718389

ABSTRACT:
A densified carbon matrix carbon fiber composite preform is made by vacuum molding an aqueous slurry of carbon fibers and carbonizable organic powder to form a molded part. The molded part is dried in an oven at 50.degree. C. for 14 hours and hot pressed at 2000 psi at 400.degree. C. for 3 hours. The hot pressed part is carbonized at 650.degree. C. under nitrogen for 3 hours and graphite at 2400.degree. C. to form a graphitic structure in the matrix of the densified carbon matrix carbon fiber composite preform. The densified preform has a density greater than 1.1 g/cc.

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