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1.发明公开
公开(公告)号：EP3798254A1
公开(公告)日：2021-03-31
申请号：EP19826047.3
申请日：2019-03-27
发明人： KOBAYASHI, Hiroshi , MAEYAMA, Taiki , KIDO, Daisuke , IKUSHIMA, Takashi , HOSOKAWA, Naofumi , OHNISHI, Hirokazu
摘要： The invention aims to provide a prepreg that has high processability and laminating performance and to provide a method to produce such a prepreg in an industrially advantageous way. A prepreg comprising at least the components [A] to [E] given below, having a structure incorporating a first layer composed mainly of the component [A] and a first epoxy resin composition that contains the components [B] to [D] but is substantially free of the component [E] and a second layer composed mainly of a second epoxy resin composition that contains the components [B] to [E] and disposed adjacent to each surface of the first layer,
the second epoxy resin composition being characterized in that its component [D] has a weight-average molecular weight of 2,000 to 30,000 g/mol and accounts for 5 to 15 parts by mass relative to the total quantity of its components [B] to [E], which accounts for 100 parts by mass, and also characterized by having a storage elastic modulus G' at 25°C of 8.0 × 10 5 to 6.0 × 10 6 Pa as measured at an angular frequency of 3.14 rad/s, giving a value of 0.085 or more as calculated by the equation (1) given below, and showing a glass transition temperature of -10°C or more and less than 7°C as measured by differential scanning calorimetry (DSC),
and the component [D] contained therein accounting for 1 part by mass or more and less than 10 parts by mass relative to the total quantity of the first epoxy resin composition and the second epoxy resin composition, which accounts for 100 parts by mass:
[A] carbon fiber,
[B] epoxy resin,
[C] curing agent,
[D] thermoplastic resin, and
[E] particles containing a thermoplastic resin as primary component and having a volume-average particle diameter of 5 to 50 µm.
[Mathematical formula 1] log 10 G ′ Pa at 25 ° C − log 10 G ′ Pa at 40 ° C 15-
2.发明公开PRE-PREG, FIBER-REINFORCED COMPOSITE MATERIAL, AND THERMOPLASTIC RESIN PARTICLES 审中-公开预浸料坯纤维增强复合材料及热塑性树脂粒子
公开(公告)号：EP2949689A1
公开(公告)日：2015-12-02
申请号：EP14743437.7
申请日：2014-01-24
CPC分类号： C08L63/00 , C08J5/24 , C08J2363/00 , C08L29/04 , C08L77/00
摘要： The invention provides a prepreg that can give a fiber-reinforced composite material exhibiting stable and excellent interlaminar fracture toughness and impact resistance under wide molding conditions. The prepreg includes at least a reinforcement fiber [A], a thermosetting resin [B], and the following component [C] wherein 90% or more of the material [C] is present inside a region of the prepreg that extends from any surface of the prepreg to a prepreg site having, from the surface, a depth of 20% of the thickness of the prepreg. The component [C] satisfies requirements that (i) the storage elastic modulus G' of the material constituting the particles is more than 1 MPa, and 70 MPa or less at 180°C, and that (ii) the ratio of the storage elastic modulus G' of the material constituting the particles at 160°C to the storage elastic modulus G' of the material at 200°C ranges from 1 to 5; and is insoluble in the thermosetting resin [B].
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公开(公告)号：EP4414413A1
公开(公告)日：2024-08-14
申请号：EP22878416.1
申请日：2022-09-29
摘要： An object is to provide a prepreg and a fiber-reinforced resin molded article that are excellent in joint strength with other members, appropriately control the resin flow at the time of welding, and excellent in dimensional stability at the time of welding. There is provided a prepreg including a thermoplastic resin layer containing reinforcing fibers and a thermoplastic resin, in which the thermoplastic resin layer is present on at least one surface of the prepreg, and the thermoplastic resin layer contains 65.0 to 99.5% by mass of a constituting unit of the thermoplastic resin and contains 0.5 to 35.0% by mass of a total amount of a constituting unit of a thermosetting resin and a constituting unit of a curing agent with respect to 100% by mass of a total amount of the constituting unit of the thermoplastic resin, the constituting unit of the thermosetting resin, and the constituting unit of the curing agent.
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公开(公告)号：EP4314108A1
公开(公告)日：2024-02-07
申请号：EP22779219.9
申请日：2022-03-24
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公开(公告)号：EP3572452A1
公开(公告)日：2019-11-27
申请号：EP18742070.8
申请日：2018-01-18
摘要： The invention aims to provide a prepreg that has excellent processability and handleability and can be processed into a cured product with high heat resistance and to provide a method to produce such a prepreg in an industrially advantageous way without being restricted by the types and contents of the matrix resin components used. The prepreg includes at least components [A] to [D] as given below and a preliminary reaction product that is a reaction product of the component [B] and the component [C], at least one surface resin in the prepreg having a storage elastic modulus G' in the range of 1.0 × 10 3 to 2.0 × 10 8 Pa as measured at a temperature of 40°C and an angular frequency in the range of 0.06 to 314 rad/s: [A] carbon fiber, [B] epoxy resin, [C] curing agent, and [D] thermoplastic resin.
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6.发明公开
公开(公告)号：EP3797991A1
公开(公告)日：2021-03-31
申请号：EP19826280.0
申请日：2019-06-25
发明人： KOBAYASHI, Hiroshi , MAEYAMA, Taiki , KIDO, Daisuke , IKUSHIMA, Takashi , HOSOKAWA, Naofumi , OHNISHI, Hirokazu
摘要： An object of the present invention is to provide a prepreg having a high processability and laminating performance in an automated lay-up device and serving to produce a cured product having good physical properties, and also provide a method for the production thereof. A prepreg comprising at least the components [A] to [E] listed blow and having a structure incorporating a first layer composed mainly of the component [A] and a first epoxy resin composition that contains the components [B] to [D] but is substantially free of the component [E] and a second layer composed mainly of a second epoxy resin composition that contains the components [B] to [E] and disposed adjacent to each surface of the first layer, the second epoxy resin composition being characterized in that its component [D] accounts for 1 part by mass or more and less than 5 parts by mass relative to the total quantity of its components [B] to [E], which accounts for 100 parts by mass, and also characterized by having a storage elastic modulus G' at 25°C of 8.0 × 10 5 to 6.0 × 10 6 Pa as measured at an angular frequency of 3.14 rad/s, giving a value of 0.085 or more as calculated by the equation (1) specified below, and having a component [D] content of 1 part by mass or more and less than 10 parts by mass relative to the total quantity of the first epoxy resin composition and the second epoxy resin composition, which accounts for 100 parts by mass:
[A] carbon fiber,
[B] epoxy resin,
[C] curing agent,
[D] thermoplastic resin, and
[E] particles containing a thermoplastic resin as primary component and having a volume-average particle diameter of 5 to 50 µm.
[Mathematical formula 1] log 10 G ′ Pa at 25 ° C − log 10 G ′ Pa at 40 ° C 15-
7.发明公开EPOXY RESIN COMPOSITION, PREPREG, AND FIBER-REINFORCED COMPOSITE MATERIAL 审中-公开环氧树脂组合物，预浸料和纤维增强复合材料
公开(公告)号：EP3031860A1
公开(公告)日：2016-06-15
申请号：EP14834468.2
申请日：2014-08-01
CPC分类号： C08L63/00 , C08G59/5033 , C08J5/042 , C08J5/24 , C08J2363/00 , C08J2400/22 , C08J2400/26 , C08J2467/02 , C08J2477/00 , C08L77/06 , C08L77/00
摘要： [Problem]To provide: a fiber-reinforced composite material having both Mode I interlaminar fracture toughness and compressive strength under wet heat conditions; an epoxy resin composition for producing the fiber-reinforced composite material; and a prepreg produced using the epoxy resin composition. [Solution] An epoxy resin composition comprising at least the following constituents [A], [B] and [C]: [A] an epoxy resin; [B] composite polyamide microparticles which satisfy such a requirement (b1) the materials constituting the particles are a polyamide (B1) and a thermoplastic elastomer resin (B2), such a requirement (b2) that the melting point or the glass transition temperature of the polyamide (B1) is higher than 100°C and such a requirement (b3) the number average particle diameter is 0.1 to 100 µ m; and [C] a curing agent.
摘要翻译： 提供：在湿热条件下具有I型层间断裂韧性和压缩强度的纤维增强复合材料; 用于制造纤维增强复合材料的环氧树脂组合物; 以及使用该环氧树脂组合物制造的预浸料坯。 一种环氧树脂组合物，其包含至少以下组分[A]，[B]和[C]：[A]环氧树脂; [B]满足该要求的复合聚酰胺微粒（b1）构成粒子的材料是聚酰胺（B1）和热塑性弹性体树脂（B2），满足要求（b2）的要求（b2）是熔点或玻璃化转变温度 聚酰胺（B1）高于100℃，并且这样的要求（b3）数均粒径为0.1至100μm; 和[C]固化剂。
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