Prepreg, fiber-reinforced composite material, method for producing same, and epoxy resin composition

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United States of America Patent

PATENT NO 10227476
APP PUB NO 20140273693A1
SERIAL NO

14352591

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Abstract

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The present invention pertains to a prepreg containing reinforcing fibers and an epoxy resin composition. Said prepreg is sandwiched between dies preheated to 140.degree.C. and pressurized to MPa and held for five minutes at this temperature to obtain a cured article having a G′Tg of at least 150.degree.C. The present invention also pertains to a fiber-reinforced composite material and a method for producing same. According to this invention, it is possible to provide a prepreg which is well suited to press-molding, particularly to high-cycle press-molding. It is also possible to provide a fiber-reinforced composite material which can be heat-cured at a lower temperature and over a shorter time than conventional methods, with which it is possible to minimize excessive flow of resin in hot-press curing, and which is resistant to performance defects such as fiber meandering and defects in surface appearance. A method for producing the same can also be provided.

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Patent Owner(s)

  • MITSUBISHI CHEMICAL CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukuhara, Yasuhiro Toyohashi, JP 11 123
Kaneko, Manabu Toyohashi, JP 34 170
Ushiyama, Hisaya Toyohashi, JP 8 27

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