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公开(公告)号：EP4442440A1
公开(公告)日：2024-10-09
申请号：EP22898570.1
申请日：2022-11-22
摘要： A porous body including: carbon fibers (A) at more than 50% by weight and not more than 99% by weight, and organic fibers (B) having a tensile elongation at break of 2.5 to 100% at not less than 1% by weight and less than 50% by weight, as reinforcing fibers; and a resin (C); the reinforcing fibers being fixed by the resin (C), the porous body having a porosity of 10 to 95% by volume. A porous body of a fiber-reinforced plastic with excellent lightweightness, impact strength, and rigidity is provided.
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公开(公告)号：EP4332390A1
公开(公告)日：2024-03-06
申请号：EP22825050.2
申请日：2022-06-16
摘要： The present invention aims to provide a joint structure, a joined assembly, and a set of members in which high joining strength is developed by fitting. It provides a joint structure including a first joint part formed in a first member and a second joint part formed in a second member that are fitted and fixed together wherein at least either of the first member and the second member is made of a fiber reinforced plastic material that contains reinforcing fibers with an average fiber length of 1 mm or more; the first joint part has a recessed shape in at least one cross-section of the joint structure while the second joint part has a shape that fits into the recessed shape of the first joint part in that cross-section; and there exists a pressing force between the first joint part and the second joint part so that the first member and the second member are fitted and fixed together.
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公开(公告)号：EP3195997B1
公开(公告)日：2019-03-13
申请号：EP15843030.6
申请日：2015-09-14
IPC分类号： B29C43/52 , B29C70/44 , B29C43/12 , B29K105/08
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公开(公告)号：EP3195997A1
公开(公告)日：2017-07-26
申请号：EP15843030.6
申请日：2015-09-14
CPC分类号： B29B15/105 , B29B15/12 , B29C43/12 , B29C43/52 , B29C70/06 , B29C70/44 , B29C2043/525 , B29C2043/527 , B29C2043/562 , B29K2063/00 , B29K2105/06 , B29K2105/0872 , B29K2105/253 , B32B5/28 , C08J5/24 , D04H3/115
摘要： An object of the present invention is to provide a process for producing a fiber-reinforced plastic. The process is capable of producing a high-quality fiber-reinforced plastic with good yield in a short molding cycle time despite being atmospheric pressure molding. The present invention is characterized by using local contact heating to give different temperature conditions for producing a fiber-reinforced plastic by atmospheric pressure molding from a fiber-reinforced material which contains a reinforcing fiber impregnated with a thermosetting resin composition.
摘要翻译： 本发明的目的是提供一种生产纤维增强塑料的方法。 尽管采用大气压力成型，该工艺能够在短的成型周期内生产出高产量的高质量纤维增强塑料。 本发明的特征在于，使用局部接触加热，通过大气压成型，由含有浸渍有热固化性树脂组合物的增强纤维的纤维增强材料，制造用于制造纤维增强塑料的不同的温度条件。
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公开(公告)号：EP4442743A1
公开(公告)日：2024-10-09
申请号：EP22898569.3
申请日：2022-11-22
IPC分类号： C08J5/24
CPC分类号： C08J5/24
摘要： Provided is a prepreg in which 5 to 65 parts by weight of a fiber sheet substrate is impregnated with 35 to 95 parts by weight of a resin, the fiber sheet substrate containing more than 50% by weight but 99% by weight or less of discontinuous carbon fibers (A) and 1% by weight or more but less than 50% by weight of discontinuous organic fibers (B) that are uniformly dispersed, wherein the prepreg satisfies any one of the following Conditions 1 to 3: Condition 1: the resin is a thermoplastic resin (C), and a difference between a melting point Tmb (°C) of the organic fibers (B) and a melting point Tmc (°C) of the thermoplastic resin (C) (Tmb - Tmc) is 20 to 200°C; Condition 2: the resin is a thermosetting resin (D), and a difference between the melting point Tmb (°C) of the organic fibers (B) and a curing temperature Tmd (°C) of the thermosetting resin (D) (Tmb - Tmd) is 20 to 400°C; and Condition 3: the organic fibers (B) have no melting point. A prepreg, a preform, and a fiber-reinforced plastic molded article, which have excellent moldability, mechanical properties, and impact strength, are provided.
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公开(公告)号：EP4011587A1
公开(公告)日：2022-06-15
申请号：EP20849707.3
申请日：2020-08-03
发明人： NAITO, Yuta , ADACHI, Kentaro , MATSUTANI, Hiroaki
IPC分类号： B29B11/16 , B29K105/14 , C08J5/04
摘要： The object is to provide an incised prepreg having desired formability stably. The incised prepreg contains unidirectionally oriented reinforcing fibers and matrix resin and has an incised region containing a plurality of incisions made to divide reinforcing fibers, wherein the incised region includes a plurality of incision rows, each containing a plurality of incisions having nearly equal fiber-directionally projected lengths and aligned at substantially constant intervals in the fiber direction and wherein the distance L1, measured at right angles to the fiber direction, between two incision rows located on either side of an arbitrarily selected incision row and the fiber-directionally projected length L2 of the latter incision row satisfy the following relation: -1.0
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7.发明公开
公开(公告)号：EP4316801A1
公开(公告)日：2024-02-07
申请号：EP22775388.6
申请日：2022-03-17
摘要： An object of the present invention is to obtain a prepreg laminate that is a fiber-reinforced plastic material having high rigidity and lightweight properties and excellent in moldability into a complicated shape. The present invention is a prepreg laminate obtained by a prepreg (A), in which non-continuous reinforcing fibers are impregnated with a thermosetting resin or thermoplastic resin, and a prepreg (B), in which non-continuous reinforcing fibers are impregnated with a thermoplastic resin, being laminated adjacent to each other, and by the prepreg (A) being disposed on at least one surface, at least some combinations of the prepreg (A) and the prepreg (B) adjacent to each other forming an overlap region that satisfies at least one of (1) and (2) below: (1) a coefficient of variation in fiber length of the non-continuous reinforcing fibers included in the prepreg (B) is larger than a coefficient of variation in fiber length of the non-continuous reinforcing fibers included in the prepreg (A); and (2) the prepreg (B) has a plurality of incisions at which the non-continuous reinforcing fibers included in the prepreg (B) are cut, and an average value of a two-dimensional orientation angle of the non-continuous reinforcing fibers included in the prepreg (B) is larger than an average value of a two-dimensional orientation angle of the non-continuous reinforcing fibers included in the prepreg (A).
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公开(公告)号：EP4209319A1
公开(公告)日：2023-07-12
申请号：EP21864271.8
申请日：2021-08-30
IPC分类号： B29B11/16 , B29K105/12 , C08J5/24 , B29C70/12 , B29C70/34
摘要： An object of the present invention is to provide a fiber-reinforced plastic capable of coping with a more complicated shape while maintaining lightweight properties and mechanical properties. A thermoplastic prepreg obtained by impregnating a discontinuous reinforcing fiber web impregnated with a thermoplastic resin, the thermoplastic prepreg satisfying at least one of the following features (A) or (B):
feature (A), that is, a plurality of incisions cutting at least a part of discontinuous reinforcing fibers constituting the discontinuous reinforcing fiber web is included; and
feature (B), that is, a fiber length variation region in which a coefficient of variation in fiber length of the discontinuous reinforcing fibers constituting the discontinuous reinforcing fiber web is 40% or more is included.
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