Polyamide fiber reinforcement in thermoset polyurethane...

Details Polyamide fiber reinforcement in thermoset polyurethane... Polyamide fiber reinforcement in thermoset polyurethane...

C - Chemistry, Metallurgy

08

J

400/5504, 18/955

C08J 5/04 (2006.01) C08L 75/04 (2006.01)

Patent

CA 1284395

POLYAMIDE FIBER REINFORCEMENT IN THERMOSET POLYURETHANE COMPOSITES ABSTRACT OF THE DISCLOSURE Fiber-reinforced thermoset polyurethane composites display enhanced impact strength when sufficient amounts of a high tenacity aliphatic polyamide fiber characterized by a drawn denier of 4 to 8 denier per filament (4.4 - 9 dxpf); a thermal shrinkage of up to about 14 percent; an elongation of from less than 28 percent; and a tenacity of at least 5.5 (49), preferably at least 7 grams per denier (62 mN/dtex), are incorporated into the composite. The process of producing such composites, including reinforced reaction injection molding processes, resin transfer molding processes, and casting process are improved by a reduction in equipment wear resulting from the incorporation of the specified polyamide fiber.

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