Impact enhanced prepregs and formulations

Details Impact enhanced prepregs and formulations Impact enhanced prepregs and formulations

1987-12-15

1989-10-17

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428283, 428284, 428294, 428297, 428298, 428367, 428413, 428902, 428408, B32B 700

Patent

active

048746614

ABSTRACT:
A prepreg formulation comprising prepreg filament fibers unidirectionally aligned, and/or woven and nonwoven fibrics, a thermosetting matrix resin and thin surface layers of extremely fine fibers of a thermoformable polymer having at least one of a T.sup.m or T.sup.g greater than about 300.degree. C. or no T.sup.m or T.sub.g and a decomposition temperature greater than about 300.degree. C. The preferred matrix resin is a blend of a thermosetting epoxy resin and an amorphous thermoplastic polymer that has a T.sub.g greater than about 195.degree. C. The invention contemplates the addition of small amounts of a Cr(III) complex and inorganic whiskers.

REFERENCES:
patent: 4330659 (1982-05-01), King et al.
patent: 4460638 (1984-07-01), Halusko
patent: 4486494 (1984-12-01), Elden
patent: 4656207 (1987-04-01), Jabloner et al.
patent: 4656208 (1987-04-01), Chu et al.
patent: 4820568 (1989-04-01), Harpell et al.

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