PREPREG AND CARBON-FIBER-REINFORCED COMPOSITE MATERIAL

Provided are a prepreg providing a carbon fiber reinforced material having excellent Mode I interlaminar toughness, Mode II interlaminar toughness, and tensile strength and the carbon fiber reinforced material.A prepreg includes following constituents [A] to [C] and satisfies following conditions (I...

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Bibliographic Details
Main Authors SUGIMOTO, Atsuki, ARAI, Atsuhito, MIHARA, Mayumi, FURUKAWA, Koji, MINO, Masahiro
Format Patent
LanguageEnglish
French
German
Published 21.04.2021
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
WORKING-UP
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Summary:Provided are a prepreg providing a carbon fiber reinforced material having excellent Mode I interlaminar toughness, Mode II interlaminar toughness, and tensile strength and the carbon fiber reinforced material.A prepreg includes following constituents [A] to [C] and satisfies following conditions (I) and (II):[A]: a carbon fiber;[B]: an epoxy resin; and[C]: a hardener for [B], and(I) a surface oxygen concentration O/C of [A] measured by X-ray photoelectron spectroscopy is 0.10 or more; and(II) a cured product obtained by curing [B] and [C] includes a resin region having molecular anisotropy exhibiting interference fringes in polarizing microscope observation in a crossed Nicol state.
Bibliography:Application Number: EP20180838951