Toughened thermosetting structural materials

Details Toughened thermosetting structural materials Toughened thermosetting structural materials

1989-01-04

1993-09-07

Marquis, Melvyn I.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

523468, 525423, C08L 6300, C08F28304, B32B 2700

Patent

active

052427480

ABSTRACT:
The incorporation of 2 to 25 .mu.m particles of a limited class of polyimides having appreciable nonaromatic character into heat curable epoxy resin systems significantly increases the toughness of such systems without loss of other desirable properties. These toughened epoxy resin systems are useful in preparing carbon fiber reinforced composites having compression strength after impact (CAI) of greater than 45 Ksi after a 1500 in-lb/in impact.

REFERENCES:
patent: 4487894 (1984-12-01), Lee
patent: 4510272 (1985-04-01), Loszewski
Database WPIL, Accession No. 83-737328 [33] Derwent Publications Ltd, London, GB.

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