EPOXY RESIN COMPOSITION, PREPREG, AND FIBER-REINFORCED COMPOSITE MATERIAL
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United States of America Patent
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Issued Date -
Sep 19, 2024
app pub date -
Feb 3, 2022
filing date -
Mar 22, 2021
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Abstract
An object of the present invention is to provide an epoxy resin composition which can be suitably used in prepreg and fiber-reinforced composite material applications, and which has an excellent strength, elastic modulus, elastic modulus under hot wet conditions and heat resistance after moisture absorption. The gist of the present invention is an epoxy resin composition including the following components [A], [B] and [C]:
- [A]: an epoxy resin,[B]: an amine curing agent, and[C]: a phosphate ester compound having a molecular weight of 250 or less; wherein the epoxy resin composition satisfies the following requirements (1) and (2):(1): the epoxy resin composition includes 1 part by mass or more and 15 parts by mass or less of the component [C] with respect to 100 parts by mass of the component [A]; and(2): the component [A] has an average epoxy equivalent of 160 g/eq or less.
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