| 摘要 |
PROBLEM TO BE SOLVED: To provide a radiation-curable resin composition excellent in reactivity, and to provide a prepreg formed out of the resin composition and a fiber reinforcing material, especially, useful for forming a composite material or a component utilizable in aeronautic and space fields. SOLUTION: This radiation-curable resin composition comprises a resin component which comprises a combination of a resin (A) in an amount of 50-99 wt% and a resin (B1) and/or a resin (B2) in an amount of 50-1 wt%, and further the composition comprises a polymerization initiator (C) in an amount of 0.005-0.5 mol based on 1 kg of the resin component, wherein the resin (A) has a ring functional group having higher basicity when compared with that of a ring-opened product, the resin (B1) has a functional group comprising a compound having a strain energy of≥80 kJ/mol as a ring monomer, the resin (B2) has a ring functional group having higher basicity when compared with that of a ring-opened product and further has relatively lower viscosity when compared with that of the resin (A), and the polymerization initiator (C) comprises a boron-based diaryl iodonium salt expressed by specific formula. The prepreg is obtained by impregnating the fiber reinforcing material with the resin composition. COPYRIGHT: (C)2006,JPO&NCIPI
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