Patent ID: 8551628

Claim:
A composite material comprising: (1) a thermosetting composition in an amount of 15 to 50 by weight with respect to the composite material (according to the total weight of the composite material), comprising a butadiene styrene copolymer resin with a molecular weight of less than 11,000 containing more than 60 percent of vinyl, a polybutadiene resin with polarity groups containing more than 60 percent of vinyl, and a maleic anhydride grafted polybutadiene styrene copolymer with a molecular weight of more than 50,000; (2) a fiberglass cloth in an amount of 10 to 35 by weight with respect to the composite material; (3) a powder filler in an amount of 25 to 55 by weight with respect to the composite material; and (4) a cure initiator in an amount of 1 to 3 by weight with respect to the composite material.