| 摘要 |
PROBLEM TO BE SOLVED: To provide a prepreg substrate exhibiting a good flow property, forming follow-up property for complicated shape, and a superior dynamic property applicable to structural material and its low dispersion and superior dimensional stability in a case of using it as fiber reinforced plastics. SOLUTION: The prepreg substrate is comprised of reinforcing filaments arranged in one direction and the first and the second of matrix resin, plural notches are formed in the direction crossing the reinforcing filaments on the whole surface of it, the substrate is substantially cut apart by the notches of the reinforcing filaments, the filament length L is 10 to 100 mm, the notched width W is put within a range of 1 to 50 mm, a volume content of the filament Vf is put in a range of 45 to 65%, the first matrix resin holds at least 90 vol% of the whole of the matrix resin and the second matrix resin with higher tensile elongation than that of the first matrix resin is arranged on the surface of the prepreg substrate. COPYRIGHT: (C)2008,JPO&INPIT
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