| 摘要 |
PROBLEM TO BE SOLVED: To provide a prepreg produced by impregnating a fibrous reinforcing material with an epoxy resin composition that is excellent in reactivity and is cured by radiation such as an electronic beam, a gamma ray, an X-ray or the like. SOLUTION: The prepreg is produced by impregnating a fibrous reinforcing material with an epoxy resin composition for radiation curing comprising a resin component composed mainly of an epoxy resin and a boron-based diallyl iodonium salt represented by a specific formula as a polymerization initiator in an amount of 0.005-0.5 mol per kg of the resin component. A composite material or member molded from the prepreg by irradiating the same with radiation has a sufficient degree of cure and is excellent in mechanical or thermal properties, and therefore is widely used not only in the aerospace field but also in other industrial fields in general. COPYRIGHT: (C)2006,JPO&NCIPI |
