公开(公告)号：EP2975175A1

公开(公告)日：2016-01-20

申请号：EP14763068.5

申请日：2014-03-11

申请人： Kurashiki Boseki Kabushiki Kaisha

发明人： ITO Masamichi ,  TANAKA Tadaharu ,  HORIMOTO Wataru

IPC分类号： D06M10/00 ,  D06M10/02 ,  D06M11/34 ,  D06M15/55 ,  D06M101/00 ,  D06M101/40

CPC分类号： C08K9/04 ,  C03C25/36 ,  C03C25/607 ,  C03C25/6208 ,  C03C25/6226 ,  C03C25/6293 ,  C08J5/06 ,  C08J5/08 ,  C08K7/06 ,  D06M10/001 ,  D06M10/025 ,  D06M11/34 ,  D06M2101/40

摘要： Fibers for fiber-reinforced resin of the present invention are fibers for fiber-reinforced resin to which a sizing agent is adhered. The fibers are at least one selected from carbon fibers and glass fibers, and an ester bond (-COO-) generated by denaturation of the sizing agent is present on surfaces of the fibers. A method for producing the same according to the present invention includes: subjecting fibers to which a sizing agent is adhered to at least one treatment selected from the group consisting of ozone oxidation, ultraviolet irradiation at a wavelength of 400 nm or less, and a plasma treatment. The fibers are at least one selected from carbon fibers and glass fibers. Thus, it is possible to provide carbon fibers having enhanced wettability to a matrix resin and thereby allowing the matrix resin to be impregnated between the fibers easily.

摘要翻译： 本发明的纤维增强树脂用纤维是附着有上浆剂的纤维增强树脂用纤维。 纤维是选自碳纤维和玻璃纤维中的至少一种纤维，并且通过上浆剂变性产生的酯键（-COO-）存在于纤维表面上。 本发明的制造方法的特征在于，包括：对附着了上浆剂的纤维实施选自臭氧氧化，波长400nm以下的紫外线照射和等离子体中的至少一种处理 治疗。 纤维是选自碳纤维和玻璃纤维中的至少一种。 因此，可以提供对基质树脂具有增强的润湿性的碳纤维，从而容易地使基质树脂浸渍在纤维之间。

公开(公告)号：EP3904032A1

公开(公告)日：2021-11-03

申请号：EP19905301.8

申请日：2019-12-06

申请人： Kurashiki Boseki Kabushiki Kaisha

发明人： TANAKA Tadaharu ,  HORIMOTO Wataru ,  HIRAISHI Yoichi ,  NAKAMURA Takashi ,  NAKAME Yuta ,  KOMAI Yuki

IPC分类号： B29B11/16 ,  B29K105/10 ,  D04H3/04

摘要： A resin-integrated carbon fiber sheet 1, including: a carbon fiber sheet 2 in which a carbon fiber filament group is spread and arrayed in parallel in one direction; resin 4 that is present on part of a surface of the carbon fiber sheet; and bridging fibers 3. One or more of the bridging fibers 3 is present on average on a surface of the carbon fiber sheet 2 in a direction across the carbon fiber sheet per 10 mm 2 of the sheet 2, and the resin 4 on the surface adhesively fixes the bridging fibers 3 to the carbon fiber sheet 2. Thus, the present invention provides a resin-integrated carbon fiber sheet that is strong in the width direction of the carbon fiber sheet, high in cleavage resistance and excellent in handleability, and a production method of the same.

公开(公告)号：EP3434717A1

公开(公告)日：2019-01-30

申请号：EP17769652.3

申请日：2017-01-27

申请人： Kurashiki Boseki Kabushiki Kaisha

发明人： HIRAISHI Yoichi ,  HORIMOTO Wataru ,  TANAKA Tadaharu

IPC分类号： C08J5/04 ,  C09J7/02 ,  C09J121/00 ,  C09J123/00 ,  C09J201/00

摘要： A reinforcing carbon fiber sheet (1) of the present invention includes: a carbon fiber filament (2) group arrayed in parallel in one direction; and a thermoplastic adhesive (4) present on at least part of the carbon fiber filament group in a direction across the carbon fiber filament group to unite the carbon fiber filament group. Preferably, the reinforcing sheet (1) includes a minimum amount of the carbon fibers required to produce a reinforcing effect. A sizing layer (3) of an epoxy-based resin is present on the surface of the carbon fiber filaments (2), and has a high affinity for the thermoplastic adhesive layer (4) present thereon, so that they strongly adhere to each other. Thus, the present invention provides a reinforcing carbon fiber sheet that is thin, has good handling properties and easily adheres to a substance to be reinforced.