公开(公告)号：US20230271349A1

公开(公告)日：2023-08-31

申请号：US18017941

申请日：2021-07-15

申请人： DIC Corporation

发明人： Yasuyuki Muranaka ,  Kazutoshi Hitomi ,  Daisuke Nishikawa

IPC分类号： B29B15/12

CPC分类号： B29B15/122

摘要： Provided is a method for producing a sheet molding compound, including a step of measuring bulkiness of a carbon fiber aggregate before an impregnation step of impregnating the carbon fiber aggregate with a resin composition. The method for producing a sheet molding compound can produce a sheet molding compound having the excellent impregnation property into carbon fibers regardless of the content of the carbon fibers, and thus can be preferably used for exteriors, structures, and the like of an automotive member, a railroad vehicle member, an aerospace vehicle member, a ship member, a housing equipment member, a sport member, a light vehicle member, a civil engineering and construction member, an OA equipment, etc.

公开(公告)号：US11926073B2

公开(公告)日：2024-03-12

申请号：US17776451

申请日：2020-11-12

申请人： DIC Corporation

发明人： Kazutoshi Hitomi ,  Yasuyuki Muranaka

IPC分类号： C08J5/24 ,  B29B11/16 ,  B29C70/46 ,  B29K105/00 ,  B29K105/08 ,  B29K307/04

CPC分类号： B29B11/16 ,  C08J5/243 ,  B29C70/465 ,  B29K2105/0094 ,  B29K2105/0872 ,  B29K2307/04 ,  C08J2363/00

摘要： A method for producing a sheet molding compound including impregnating a resin composition into carbon fibers. The method is characterized in that the bulkiness Ho of the carbon fibers before an impregnation step is 3 mm or more, the compression ratio Rc(Hc/Ho) of the carbon fibers in the impregnation step is less than 1, the thickness of the sheet molding compound is 10 mm or less, and the content Wc of the carbon fibers is 40% by mass or more. The method for producing a sheet molding compound can produce a sheet molding compound having the excellent impregnation property into carbon fibers and thus can be preferably used for exteriors, structures, and the like of an automotive member, a railroad vehicle member, an aerospace vehicle member, a ship member, a housing equipment member, a sport member, a light vehicle member, a civil engineering and construction member, an OA equipment.

公开(公告)号：US20220402169A1

公开(公告)日：2022-12-22

申请号：US17776451

申请日：2020-11-12

申请人： DIC Corporation

发明人： Kazutoshi Hitomi ,  Yasuyuki Muranaka

IPC分类号： B29B11/16 ,  C08J5/24

摘要： A method for producing a sheet molding compound including impregnating a resin composition into carbon fibers. The method is characterized in that the bulkiness Ho of the carbon fibers before an impregnation step is 3 mm or more, the compression ratio Rc (Hc/Ho) of the carbon fibers in the impregnation step is less than 1, the thickness of the sheet molding compound is 10 mm or less, and the content Wc of the carbon fibers is 40% by mass or more. The method for producing a sheet molding compound can produce a sheet molding compound having the excellent impregnation property into carbon fibers and thus can be preferably used for exteriors, structures, and the like of an automotive member, a railroad vehicle member, an aerospace vehicle member, a ship member, a housing equipment member, a sport member, a light vehicle member, a civil engineering and construction member, an OA equipment.