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    Integrally molded body
    1.
    发明授权
    Integrally molded body 有权

    公开(公告)号：US11794385B2

    公开(公告)日：2023-10-24

    申请号：US16641447

    申请日：2018-08-24

    Applicant: Toray Industries, Inc.

    Inventor： Takafumi Suzuki ,  Yuichiro Sento ,  Naokichi Imai ,  Mitsushige Hamaguchi ,  Masato Honma

    IPC: B29C45/00 ,  B29C45/14 ,  B32B27/08 ,  C08J5/24

    CPC classification number: B29C45/0025 ,  B29C45/14631 ,  B32B27/08 ,  C08J5/24 ,  B32B2262/10 ,  B32B2307/546 ,  B32B2307/7376 ,  C08J2363/00 ,  Y10T428/24994 ,  Y10T428/249933

    Abstract: The following configuration is adopted for the purpose of solving reduction in strength and rigidity at a weldline which is a problem of an injection molding body, and enabling free design such as thin wall molding or complex shape molding of the injection molding body. That is, there is provided



    an integrally molded body in which a substrate for reinforcement (a) having a discontinuous fiber (a1) and a resin (a2) and an injection molding body (b) having a discontinuous fiber (b1) and a resin (b2) are integrated, the substrate for reinforcement (a) covering a part or all of a weldline of the injection molding body (b) to be integrated with the injection molding body (b),
    the ratio of thickness Ta of the substrate for reinforcement (a) to thickness T of a weldline part of the integrally molded body satisfying relational expression:
    in a case of Ea≠Ebw,

    Ta/T≤((Ebw−√(Ea·Ebw))/(Ebw−Ea))

    in a case of Ea=Ebw,

    Ta/T≤0.5

    wherein, Ta: Thickness of substrate for reinforcement (a),
    T: Thickness of weldline part of integrally molded body,
    Ea: Flexural modulus of substrate for reinforcement (a) in width direction of weldline, and
    Ebw: Flexural modulus of weldline of injection molding body (b) in width direction of weldline.

    FIBER-REINFORCED COMPOSITE MATERIAL AND SANDWICH STRUCTURE
    2.
    发明申请
    FIBER-REINFORCED COMPOSITE MATERIAL AND SANDWICH STRUCTURE 有权

    公开(公告)号：US20220410502A1

    公开(公告)日：2022-12-29

    申请号：US17778073

    申请日：2020-11-16

    Applicant: Toray Industries, Inc.

    Inventor： Naokichi Imai ,  Kotaro Shinohara ,  Masato Honma

    IPC: B29C70/14 ,  B29C53/24 ,  B29C70/40

    Abstract: An object of the present invention is to obtain a fiber-reinforced composite material achieving both lightweight properties and mechanical properties at a high level. The present invention is a fiber-reinforced composite material including: a resin (A); and a reinforcing fiber (B), and including: a fiber-reinforced structure portion including an in-plane orientation portion having an average fiber orientation angle of the reinforcing fiber (B) of 0° or more and 45° or less and an out-of-plane orientation portion having an average fiber orientation angle of the reinforcing fiber (B) of more than 45° and 90° or less; and a cavity portion defined by the in-plane orientation portion and the out-of-plane orientation portion of the fiber-reinforced structure portion.

    COMPOSITE PREPREG, PREFORM USING THE SAME, FIBER-REINFORCED COMPOSITE MATERIAL ASSEMBLY, AND METHOD FOR PRODUCING THE SAME
    5.
    发明申请
    COMPOSITE PREPREG, PREFORM USING THE SAME, FIBER-REINFORCED COMPOSITE MATERIAL ASSEMBLY, AND METHOD FOR PRODUCING THE SAME 有权

    公开(公告)号：US20230075860A1

    公开(公告)日：2023-03-09

    申请号：US17789839

    申请日：2020-11-12

    Applicant: Toray Industries, Inc.

    Inventor： Naokichi Imai ,  Masato Honma

    IPC: C08J5/24 ,  B29C70/54

    Abstract: Provided is a composite prepreg including a region (A) containing a thermosetting resin (a) and a reinforcing fiber and a region (B) containing a thermosetting resin (b) and a reinforcing fiber, the composite prepreg satisfying conditions (i) and (ii) or satisfying conditions (ii) and (iii):
    (i) The thermosetting resin (b) is a resin having a gel time Tb longer than a gel time Ta of the thermosetting resin (a), and in at least a part of a temperature range of 40° C. or more and 180° C. or less, satisfy Ta/Tb 0.8;
    (ii) A ratio of the region (A) on a surface of the composite prepreg is 20 to 80%; and
    (iii) The thermosetting resin (b) is a resin having a higher heat generation starting temperature Eb than a heat generation starting temperature Ea of the thermosetting resin (a), and in a differential scanning calorimetry chart obtained by measuring at 5° C./min with 40° C. as a starting temperature, satisfy Eb−Ea≥30.

    Fiber-reinforced resin composition, and fiber-reinforced composite material
    8.
    发明授权
    Fiber-reinforced resin composition, and fiber-reinforced composite material 有权

    公开(公告)号：US10308775B2

    公开(公告)日：2019-06-04

    申请号：US15032713

    申请日：2014-10-24

    Applicant: Toray Industries, Inc.

    Inventor： Naokichi Imai ,  Keisuke Inose ,  Kentaro Sano ,  Atsuki Tsuchiya

    IPC: C08K9/04 ,  C08K5/29 ,  C08J5/06 ,  C08K7/06

    Abstract: A fiber-reinforced resin composition includes a polyarylene sulfide (A), a carbodiimide compound (B) and carbon fibers (C) in specific blending amounts and in which the carbon fibers (C) are surface-treated with a sizing agent (D), the carbodiimide compound (B) is an aliphatic carbodiimide compound, and the sizing agent (D) is a compound having three or more specific functional groups in one molecule; and a fiber-reinforced composite material includes a thermoplastic resin (A′), an adhesive compound (B′) and reinforcing fibers (C′) and in which the adhesive compound (B′) is a compound having two or more specific structures in one molecule, the thermoplastic resin (A′) is a thermoplastic resin containing an element other than carbon in a repeating unit structure of a main chain, and an abundance ratio Rb of the adhesive compound (B′) is 1.2 or more.

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