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公开(公告)号：EP4282644A1
公开(公告)日：2023-11-29
申请号：EP21921323.8
申请日：2021-12-21
发明人： ONODERA, Miho , TAKEBE, Yoshiki , NAITO, Yuta , MISUMI, Jun , NAKAYAMA, Yoshifumi , HONMA, Masato
摘要： A problem to be solved by the present invention is to provide a prepreg and an integrally molded article, wherein the prepreg exhibits suitable flexibility and adhesiveness, excels in formability on a complicated mold face and adhesion to a mold face, causes no positional shift, and can be efficiently reinforced and stiffened at an intended position. A main object of the present invention is to provide a prepreg including (A) reinforcing fibers, (B) a thermosetting resin, and (C) a thermoplastic resin, wherein the (C) thermoplastic resin exists in at least a part of a face of the prepreg, and wherein the prepreg satisfies the condition [I], and satisfies the condition [II] or the condition [III]: [I]: the (B) thermosetting resin has a peak in the temperature range of more than 100°C and 180°C or less on a loss tangent (tan δ) curve measured under isokinetic heating by dynamic mechanical analysis (DMA); [II]: on a loss angle δ curve obtained by measuring the prepreg isothermally by dynamic mechanical analysis (DMA), the loss angle δ curve has a point representing the maximum value, and has a point which represents a loss angle δ value 5° or more smaller than the maximum value, and which is on the earlier time side of the point representing the maximum value; and [III]: even if, on the loss angle δ curve obtained by measuring the prepreg isothermally by dynamic mechanical analysis (DMA), the loss angle δ curve has a point representing the maximum value, the loss angle δ curve does not have a point which represents a loss angle δ value 5° or more smaller than the maximum value, and which is on the earlier time side of the point representing the maximum value, or the loss angle δ curve does not have a point representing the maximum value, and has a descendingly behaving section in which the loss angle δ value becomes 5° or more smaller at a slope of -1.4°/minute or more.
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公开(公告)号：EP4249540A1
公开(公告)日：2023-09-27
申请号：EP21894437.9
申请日：2021-10-27
发明人： MISUMI, Jun , SHINOHARA, Kyoko , HONMA, Masato
摘要： The main object is to provide a fiber-reinforced resin that can be welded to another member via a thermoplastic resin and that is less likely to be damaged even when welded at a high temperature. A fiber-reinforced resin including a reinforcing fiber and having a cured epoxy resin region and a thermoplastic resin region disposed at the surface wherein aromatic rings account for 50% or more and 90% or less of the cured epoxy resin present in the cured epoxy resin region.
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公开(公告)号：EP4098684A1
公开(公告)日：2022-12-07
申请号：EP20917181.8
申请日：2020-11-12
发明人： IMAI, Naokichi , HONMA, Masato
摘要： The purpose of the present invention is to provide a prepreg that enables easy bonding of a thermosetting fiber reinforced composite material and that enables easy molding of a bonded body having excellent bonding strength.
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公开(公告)号：EP3974175A1
公开(公告)日：2022-03-30
申请号：EP20809053.0
申请日：2020-05-15
发明人： SHINOHARA, Kyoko , HONMA, Masato , MISUMI, Jun
摘要： The present invention has an object of providing a prepreg for producing a laminate suitable as a structural material, and a laminate, which have excellent combustion resistance, compressive strength and interlaminar fractural toughness values, and can be firmly integrated with another structural member by welding. The present invention is a prepreg including structural components: [A] reinforcing fibers, [B] a thermosetting resin, and [C] a thermoplastic resin [C], wherein [B] includes at least one resin selected from a cyanate ester resin having an average cyanate equivalent of 220 or less, a bismaleimide resin having an average maleimide equivalent of 210 or less, and a benzoxazine resin having an average oxazine equivalent of 300 or less, [C] is present on a surface of the prepreg, and the reinforcing fibers [A] are present which are included in a resin area including [B] and a resin area including [C] across an interface between the two resin areas.
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公开(公告)号：EP3778211A1
公开(公告)日：2021-02-17
申请号：EP19776767.6
申请日：2019-03-28
摘要： Provided is a molded article that is excellent in rigidity and lightweightness and is provided with a waterproof property, as well as a method for producing the molded article. The molded article of the present invention has a continuous porous body provided with a thin film layer, the continuous porous body having a void that is continuous in a thickness direction of the continuous porous body, and the thin film layer having a solid additive and a resin. A permeation rate of water from a surface of the molded article on a side of the thin film layer is 10% or less.
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公开(公告)号：EP3778195A1
公开(公告)日：2021-02-17
申请号：EP19775044.1
申请日：2019-03-28
摘要： Provided is a method for producing a molded article that is excellent in rigidity and lightweightness and has enhanced designability and productivity. The present invention provides a method for producing a molded article obtained by integrating a decoration layer onto a surface of a porous body. The method includes: a preheating process at which the decoration layer is preheated and a shaping and integrating process at which the porous body is pressed to the decoration layer or the decoration layer is pressed to the porous body to shape the decoration layer while the porous body and the decoration layer are integrated to each other.
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公开(公告)号：EP3677398A1
公开(公告)日：2020-07-08
申请号：EP18852072.0
申请日：2018-08-24
IPC分类号： B29C45/14 , B29C70/20 , B32B5/28 , B29K105/12 , B29L9/00
摘要： In order to solve reduction in strength and rigidity at a weldline which is a problem of an injection molding body, and enable free design such as thin wall molding or complex shape molding of the injection molding body, 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, in which the substrate for reinforcement (a) has a difference in an orientation angle of the discontinuous fiber (a1) in each of regions obtained by dividing a major axis direction of the substrate for reinforcement (a) into 10 equal parts of within 10°, and the substrate for reinforcement (a) covers a part or all of a weldline of the injection molding body (b) to be integrated with the injection molding body (b).
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公开(公告)号：EP3263632B1
公开(公告)日：2019-11-27
申请号：EP16755537.4
申请日：2016-02-24
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公开(公告)号：EP3560985A1
公开(公告)日：2019-10-30
申请号：EP17884819.8
申请日：2017-12-20
发明人： FUJIOKA, Takashi , TAKEBE, Yoshiki , HONMA, Masato
摘要： Provided is a mountain-shaped structure material being excellent in stiffness and lightness. The present invention is a structure material including a resin, reinforced fibers and voids. The structure material has a specific bending stiffness represented as EC 1/3 ·ρ -1 being 2.5 or more where a bending modulus is Ec and a density is p. The structure material has a mountain shape.
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公开(公告)号：EP3156439B1
公开(公告)日：2019-08-21
申请号：EP16202686.8
申请日：2008-02-22
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