Sized carbon fibers, and thermoplastic polyester based composite

Details Sized carbon fibers, and thermoplastic polyester based composite Sized carbon fibers, and thermoplastic polyester based composite

1980-07-14

1982-12-21

Albrecht, Dennis L.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

156330, 1563314, 428367, 428408, 428902, 528 67, B05D 510, C08K 706, C09J 316, D04H 158

Patent

active

043649939

ABSTRACT:
The present invention is directed to carbon fibers which are coated on the surface with a sizing agent of either a polyisocyanate, such as polymethylene polyphenyl polyisocyanate, or a sorbitol polyglycidyl ether having a specifically defined total chlorine content and epoxide equivalent weight. The coated carbon fibers are employed to prepare carbon fiber composites wherein the matrix resin is a thermoplastic polyester such as poly(1,4-butylene terephthalate). The matrix resin of the composite exhibits improved bonding with the coated carbon fibers thereby imparting improved interlaminar shear strength to the composite.

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