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    Epoxy resin composition, prepreg, and carbon fiber-reinforced composite material
    12.
    发明授权
    Epoxy resin composition, prepreg, and carbon fiber-reinforced composite material 有权

    公开(公告)号：US10280251B2

    公开(公告)日：2019-05-07

    申请号：US15558087

    申请日：2016-03-16

    Applicant: TORAY INDUSTRIES, INC.

    Inventor： Junichi Aoki ,  Atsuhito Arai ,  Hiroaki Sakata ,  Takashi Ochi

    IPC: C08J5/24 ,  C08K3/04 ,  C08G59/20 ,  C08G59/24 ,  C08G59/32 ,  C08G59/38 ,  C08G59/50 ,  C08G73/02 ,  C08G73/10 ,  C08G75/23 ,  C08L63/00 ,  C08L79/08 ,  C08L81/06

    Abstract: Provided is an epoxy resin composition for giving a carbon fiber-reinforced composite material that simultaneously achieves tensile strength and compressive strength. An epoxy resin composition containing at least the following constituent elements [A]-[D] wherein the epoxy resin composition contains 5-50 mass % of constituent element [A] and 20-95 mass % of constituent element [B] relative to 100 mass % of total epoxy resin weight. [A]: at least one epoxy resin selected from 1,2-bis(glycidyloxy)benzene, 1,3-bis(glycidyloxy)benzene, 1,4-bis(glycidyloxy)benzene, derivatives of these, and epoxy resins having a structure represented by general formula [1] (in general formula [1], at least one of R1-R5 and at least one of R6-R10 is a glycidyl ether group, and the other R1-R10 represent any of a hydrogen atom, halogen atom, or aliphatic hydrocarbon group having four or fewer carbon atoms.); [B]: glycidylamine epoxy resin having three or more glycidyl groups per molecule; [C]: thermoplastic resin soluble in epoxy resin; [D]: epoxy resin curing agent.

    PREPREG
    14.
    发明申请
    PREPREG 有权

    公开(公告)号：US20210292545A1

    公开(公告)日：2021-09-23

    申请号：US17265370

    申请日：2019-08-21

    Applicant: Toray Industries, Inc.

    Inventor： Ryohei Watari ,  Atsuhito Arai ,  Atsuki Sugimoto

    IPC: C08L63/00 ,  C08J5/24

    Abstract: The invention provides a prepreg having high storage stability and serving suitably for producing components, such as structural members and interior members of aircraft and structural members of aircraft engines, that require high heat resistance under high temperature and high humidity conditions, where the prepreg exhibits good physical properties and good combustion properties. The prepreg is produced by impregnating component [A] with an epoxy resin composition containing components [B] to [D], wherein component [A] in the prepreg accounts for 50 mass % or more, where [A] is a carbon fiber, [B] is an epoxy resin, [C] is a fluorene type curing agent having a maximum particle size of 100 μm or less, and [D] is a thermoplastic resin.

    PREPREG AND CARBON FIBER REINFORCED MATERIAL
    16.
    发明申请
    PREPREG AND CARBON FIBER REINFORCED MATERIAL 有权

    公开(公告)号：US20210115208A1

    公开(公告)日：2021-04-22

    申请号：US17047789

    申请日：2019-04-11

    Applicant: Toray Industries, Inc.

    Inventor： Atsuki Sugimoto ,  Atsuhito Arai ,  Koji Furukawa ,  Ryohei Watari

    IPC: C08J5/24 ,  C08J5/04

    Abstract: Provided is a prepreg including the following constituents [A] to [C], the prepreg satisfying the following conditions [I] to [III]: [A]: a sizing agent-coated carbon fiber; [B]: an epoxy resin having a specific structure; and [C]: a hardener for [B], [I]: an epoxy resin composition including the constituents [B] and [C] has a nematic-isotropic phase transition temperature in a temperature range of 130° C. to 180° C.; [II] a prepreg after isothermal holding at 100° C. for 30 minutes does not have a high-order structure originated from a diffraction angle of 2θ=1.0° to 6.0° measured by wide angle X-ray diffraction at 100° C.; and [III]: a prepreg after isothermal holding at 180° C. for 2 hours has a high-order structure originated from the diffraction angle of 2θ=1.0° to 6.0° measured by wide angle X-ray diffraction at 180° C.

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