Patent ID: 7820274
Filing Date: 2010-10-26
Classification: B32B,C08J,C08L,H05K,Y10S,Y10T

Abstract:
1. A prepreg comprising: a sheet-like preform; and a resin-impregnated, sheet-like, fiber-reinforced material thermal pressure adhered to the sheet-like preform, wherein: the sheet-like preform comprises a graft copolymer (a) having side chains that comprise 15 to 40 parts by mass of an aromatic vinyl monomer and a main chain that comprises 60 to 85 parts by mass of a random or block copolymer comprising monomer units selected from nonpolar α-olefin monomers and nonpolar conjugated diene monomers, the resin-impregnated, sheet-like, fiber-reinforced material comprises a sheet-like, fiber-reinforced material (b1) and a thermoplastic resin (b2) into which the sheet-like, fiber-reinforced material (b1) is impregnated, and the thermoplastic resin (b2) is a block copolymer having no graft structure and having a first polymer block composed of 60 to 90 mass % of a monomer unit, which is selected from nonpolar α-olefin monomers and nonpolar conjugated diene monomers, and a second polymer block 10 to 40 mass % of a monofunctional aromatic vinyl monomer unit.