Fiber-resin-carbon composites and method of fabrication

Details Fiber-resin-carbon composites and method of fabrication Fiber-resin-carbon composites and method of fabrication

1974-12-11

1978-07-11

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

264 295, 427228, 428271, 428273, 428366, 428408, 428902, B32B 700

Patent

active

041003225

ABSTRACT:
Production of composites having increased strength, particularly at elevated temperature, heat resistance and ablative properties, while maintaining low weight, by a process which comprises impregnating fibrous reinforcement, such as a woven fabric of graphite yarns, with a resin, e.g., a phenolic resin, curing the resin to yield a fiber-resin composite, pyrolyzing such composite to convert the resin to a porous carbonaceous matrix, reimpregnating the porous fiber-carbon composite with additional resin, such as a phenolic resin, to fill the pores of the matrix, and curing the reimpregnating resin. The resulting fiber reinforcement-resin matrix-carbon matrix (i.e., bimatrix) composites are particularly useful and valuable as reinforced plastic aerospace components requiring strength at high temperatures and having improved ablative properties.

REFERENCES:
patent: 3203849 (1965-08-01), Watz et al.
patent: 3462289 (1969-08-01), Rohl et al.
patent: 3462340 (1969-08-01), Hough
patent: 3466219 (1969-09-01), Schwartz
patent: 3573123 (1971-03-01), Siegel et al.
patent: 3649435 (1972-03-01), Varlas
patent: 3700535 (1972-10-01), McCoy et al.
patent: 3772115 (1973-11-01), Carlson et al.
patent: 3778336 (1973-12-01), Adams
patent: 3826707 (1974-07-01), Olcott

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