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公开(公告)号：US11034810B2
公开(公告)日：2021-06-15
申请号：US16491050
申请日：2018-03-05
发明人： Junichi Aoki , Koji Furukawa , Atsuhito Arai , Jun Misumi , Hiroaki Sakata , Takashi Ochi
摘要： An object of the present invention is to provide an epoxy resin composition capable of providing a carbon fiber-reinforced composite material that is excellent in moldability, heat resistance, and mechanical properties such as tensile strength and compression strength, and a prepreg. The present invention provides an epoxy resin composition containing at least components [A] to [D] shown below: [A]: an epoxy resin having a xylene group; [B]: a glycidyl amine epoxy resin having three or more glycidyl groups in a molecule; [C]: a thermoplastic resin; and [D]: an aromatic polyamine, the epoxy resin composition containing 10 to 80 parts by mass of the component [A] and 20 to 90 parts by mass of the component [B] based on 100 parts by mass in total of epoxy resins, and also 1 to 25 parts by mass of the component [C] based on 100 parts by mass in total of epoxy resins.
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公开(公告)号：US10597503B2
公开(公告)日：2020-03-24
申请号：US15128583
申请日：2015-03-19
发明人： Atsuhito Arai , Koji Furukawa , Naofumi Yamashita , Shinji Kochi , Yumi Kunimitsu , Yui Fujioka , Hiroshi Taiko
摘要： A prepreg containing at least the following components [A]-[F], wherein the ratio Ne/Nd of the number of structures Ne of component [F] present in a range of outside 110% of the particle diameter of component [E] and the number of structures Nd of component [F] present in a range outside 110% of the particle diameter of component [D] is 0.25 or higher. [A]: Carbon fibers, [B] thermosetting resin, [C]: curing agent, [D]: particles composed mainly of thermoplastic resin having a primary particle number-average particle size of 5-50 μm, [E]: conductive particles different from component [D] and having a primary particle number-average particle size in the range of a specific expression, [F]: filler comprising a carbon material.
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公开(公告)号：US20180134837A1
公开(公告)日：2018-05-17
申请号：US15577607
申请日：2016-06-15
发明人： Koji Furukawa , Atsuhito Arai , Hiroaki Sakata
CPC分类号： C08G59/10 , C08G59/06 , C08G59/50 , C08G59/504 , C08J5/24 , C08J2363/00 , C08L63/00 , C08L2201/08 , C08L2205/025
摘要： Provided is an epoxy resin composition including the following component [A]: a tri- or more functional binaphthalene epoxy resin represented by the following general formula (A-1) and component [B]: an aromatic amine compound, in which the glass transition temperature of a cured product, which is obtained by curing the epoxy resin composition at 180° C. for 2 hours, after immersing in boiling water at 1 atm for 48 hours is 180° C. or more. An epoxy resin composition and a prepreg which can form a fiber-reinforced composite material excellent in heat resistance under high humidity are provided.
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公开(公告)号：US20230054021A1
公开(公告)日：2023-02-23
申请号：US17783072
申请日：2020-12-18
发明人： Itaru Asano , Atsuhito Arai , Ryohei Watari , Tomohiko Nakamura
摘要： A thermosetting resin composition contains at least: [A] a thermosetting resin; [B] a curing agent; and [C] polyamide particles satisfying following (c1) to (c6): (c1) a melting point of polyamide resin constituting the polyamide particles is 200 to 300° C.; (c2) a crystallization temperature of the polyamide resin constituting the polyamide particles is 150° C. to 250° C.; (c3) a number average particle size of the polyamide particles is 1 to 100 μm; (c4) a sphericity of the polyamide particles is 80 to 100; and (c5) the linseed oil absorption of the polyamide particles is 10 to 100 mL/100 g. A thermosetting resin composition of the present invention enables suitable production of a fiber-reinforced composite material having sufficient compressive strength after impact and wet heat compression performance.
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公开(公告)号：US20180051125A1
公开(公告)日：2018-02-22
申请号：US15558087
申请日：2016-03-16
发明人： Junichi Aoki , Atsuhito Arai , Hiroaki Sakata , Takashi Ochi
CPC分类号： C08G59/245 , C08G59/20 , C08G59/3227 , C08G59/38 , C08G59/5033 , C08G73/026 , C08G73/1071 , C08G75/23 , C08J5/24 , C08K3/046 , C08L63/00 , C08L2205/035 , C08L81/06 , C08L79/08
摘要： 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.
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6.发明申请公开(公告)号：US20170362427A1
公开(公告)日：2017-12-21
申请号：US15527251
申请日：2015-11-06
发明人： Koji Furukawa , Atsuhito Arai , Hiroaki Sakata
CPC分类号： C08L63/00 , C08G59/4035 , C08G59/5033 , C08G59/56 , C08J5/04 , C08J5/24 , C08J2363/00 , C08J2481/06 , C08L2201/08 , C08L81/06
摘要： A epoxy resin composition includes a given epoxy resin [A], an aromatic amine compound [B], an organic acid hydrazide compound [C] having a structural formula represented by general formula (I) or (II) (X is a structure selected from among monocyclic and polycyclic aromatic ring structures, polycyclic aromatic ring structures, and aromatic heterocyclic structures and optionally has, as a substituent, any of C4 or lower alkyl groups, a hydroxy group, and an amino group), and a thermoplastic resin [D], wherein the amount of the constituent element [C] is 1-25 parts by mass per 100 parts by mass of the constituent element [A], the epoxy resin composition, after having been held at 80° C. for 2 hours, having a viscosity which is up to 2.0 times the initial viscosity at 80° C.
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公开(公告)号：US20170226299A1
公开(公告)日：2017-08-10
申请号：US15128583
申请日：2015-03-19
发明人： Atsuhito Arai
摘要： A prepreg containing at least the following components [A]-[F], wherein the ratio Ne/Nd of the number of structures Ne of component [F] present in a range of outside 110% of the particle diameter of component [E] and the number of structures Nd of component [F] present in a range outside 110% of the particle diameter of component [D] is 0.25 or higher. [A]: Carbon fibers, [B] thermosetting resin, [C]: curing agent, [D]: particles composed mainly of thermoplastic resin having a primary particle number-average particle size of 5-50 μm, [E]: conductive particles different from component [D] and having a primary particle number-average particle size in the range of a specific expression, [F]: filler comprising a carbon material.
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公开(公告)号：US20230048074A1
公开(公告)日：2023-02-16
申请号：US17788402
申请日：2020-12-10
发明人： Takashi Ochi , Ryohei Watari , Atsuhito Arai
摘要： The present invention addresses the problem of providing a prepreg that yields a carbon fiber composite material that has exceptional tensile strength, heat resistance, and impact resistance and is suitable as a structural material of an aircraft body, wherein the resin composition used in the prepreg furthermore has exceptional viscosity stability, the prepreg containing a resin composition that contains carbon fibers and at least the constituent elements [A]—[D] as defined.
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公开(公告)号：US11319420B2
公开(公告)日：2022-05-03
申请号：US16496219
申请日：2018-03-16
发明人： Atsuhito Arai , Koji Furukawa , Atsuki Sugimoto , Masahiro Mino , Mayumi Mihara
摘要： A prepreg containing the following constituent elements [A] to [C], wherein a resin composition containing the constituent elements [B] and [C] has a higher-order structure derived from a diffraction angle 2θ between 1.0° and 6.0° observed with X-ray diffraction after curing: [A]: carbon fibers [B]: epoxy resin [C]: curing agent of [B].
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公开(公告)号：US11208541B2
公开(公告)日：2021-12-28
申请号：US16633904
申请日：2018-05-28
发明人： Koji Furukawa , Atsuhito Arai , Atsuki Sugimoto , Masahiro Mino , Mayumi Mihara
IPC分类号： C08K9/04 , C08K3/04 , C08K5/1515 , C08K7/06
摘要： A prepreg, which includes a carbon fiber reinforced material, has excellent Mode I interlaminar toughness, Mode II interlaminar toughness, and tensile strength. The prepreg includes the following constituents [A] to [C] and satisfies the 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.
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