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    MOLDING MATERIAL, AND RESIN-ADHERED REINFORCED FIBER BUNDLE
    4.
    发明公开
    MOLDING MATERIAL, AND RESIN-ADHERED REINFORCED FIBER BUNDLE 有权
    织物并在树脂胶粘剂增强纤维束

    公开(公告)号：EP2371505A1

    公开(公告)日：2011-10-05

    申请号：EP09834906.1

    申请日：2009-12-24

    申请人： Toray Industries, Inc.

    发明人： HONMA, Masato ,  TSUCHIYA, Atsuki ,  ASAMI, Keiichi

    IPC分类号： B29B11/16 ,  C08J5/04 ,  C08K7/02 ,  C08L23/10

    CPC分类号： B29C45/0001 ,  B29C45/0005 ,  B29K2023/12 ,  B29K2105/06 ,  C08L23/10 ,  Y10T428/2933 ,  C08L2666/02

    摘要： A molding material comprising the following components (A) to (D) at the following ratios, in which the component (D) is bonded to a composite comprising the components (A) to (C) and the order in the weight average molecular weight is component (D) > component (B) > component (C) ; (A) 1 to 75 wt% of a reinforcing fiber bundle; (B) 0.01 to 10 wt% of a first propylene-based resin;(C) 0.01 to 10 wt% of a second propylene-based resin having carboxylate groups bound to the polymer chains thereof; and (D) 5 to 98.98 wt% of a third propylene-based resin (first aspect). A resin-adhered reinforcing fiber bundle, wherein a mixture comprising a first propylene-based resin (B) and a second propylene-based resin (C) is adhered to a reinforcing fiber bundle (A); the weight average molecular weight of the first propylene-based resin (B) is larger than the weight average molecular weight of the second propylene-based resin (C); the second propylene-based resin (C) is a propylene-based resin having carboxylate groups bound to the polymer chains thereof; the adhered amount of the mixture comprising the first propylene-based resin (B) and the second propylene-based resin (C) is in a range from 0.1 to 30 parts by weight per 100 parts by weight of the reinforcing fiber bundle (A) ; and the content of the second propylene-based resin (C) is 0.3 to 45 parts by weight per 100 parts by weight of the first propylene-based resin (B) (second aspect). A molding material of this invention provides a long fiber-reinforced thermoplastic resin molding material containing a propylene-based resin as the matrix resin, which allows the reinforcing fibers to be well dispersed into the molded article produced at the time of injection molding and allows the molded article produced to have excellent mechanical properties (first aspect). A resin-adhered reinforcing fiber bundle of this invention provides a resin-adhered reinforcing fiber bundle excellent in the adhesiveness between the matrix resin comprising a thermoplastic resin, particularly a polyolefin-based matrix resin and reinforcing fibers, and good in handling properties (second aspect).

    MOLDINGS OF FIBER-REINFORCED THERMOPLASTIC RESIN
    7.
    发明公开
    MOLDINGS OF FIBER-REINFORCED THERMOPLASTIC RESIN 审中-公开

    公开(公告)号：EP3680280A1

    公开(公告)日：2020-07-15

    申请号：EP18854238.5

    申请日：2018-09-03

    申请人： Toray Industries, Inc.

    发明人： YOSHIHIRO, Kazuki ,  MITSUTSUJI, Yuki ,  TSUCHIYA, Atsuki

    IPC分类号： C08J5/04

    摘要： To provide a fiber reinforced thermoplastic resin molded article having excellent impact strength and flexural strength, provided is a fiber reinforced thermoplastic resin molded article, including: a carbon fiber (A), an organic fiber (B) having a strand strength of 1500 MPa or more and, a thermoplastic resin (C), wherein the fiber reinforced thermoplastic resin molded article contains 5 to 45 parts by weight of the carbon fiber (A), 1 to 45 parts by weight of the organic fiber (B), and 20 to 94 parts by weight of the thermoplastic resin (C) with respect to 100 parts by weight of the total of the carbon fiber (A), the organic fiber (B), and the thermoplastic resin (C), wherein a ratio (L co /l no ) of the critical fiber length L co of the organic fiber (B) to the number average fiber length l no of the organic fiber (B) is 0.9 or more and 2.0 or less, and wherein an interfacial shear strength between the organic fiber (B) and the thermoplastic resin (C) is 3.0 MPa or more and 50 MPa or less.