MOLDING MATERIAL CONTAINING CARBON FIBERS AND GLASS FIBERS AND METHOD FOR MANUFACTURING MOLDED BODY BY COLD-PRESSING SAME

The present invention relates to a method for producing a molded body by laminating and cold-pressing a molding material X and a molding material Y, wherein: the molding material X contains discontinuous carbon fibers Cx, discontinuous glass fibers Gx, and a matrix resin Rx, the carbon fibers Cx con...

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Bibliographische Detailangaben
Hauptverfasser: KONAGAI, Yuhei, HUA, Guofei, NAKAMOTO, Daishiro, SUZUKI, Kentaro
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:The present invention relates to a method for producing a molded body by laminating and cold-pressing a molding material X and a molding material Y, wherein: the molding material X contains discontinuous carbon fibers Cx, discontinuous glass fibers Gx, and a matrix resin Rx, the carbon fibers Cx contain carbon fibers Cx1 having a fiber width of less than 0.3 mm and carbon fibers Cx2 having a fiber width of 0.3 - 3.0 mm; the volume ratio of the carbon fibers Cx2 to the carbon fibers Cx is 10 Vol% or more and less than 99 Vol%; the volume ratio of the carbon fibers Cx to the glass fibers Gx is 0.1 - 1.5; an average molding shrinkage ratio (X) in an in-plane direction of the molding material X satisfies the following expression (1); the molding material Y contains discontinuous carbon fibers Cy and/or glass fibers Gy and a matrix resin Ry; and an average molding shrinkage ratio (Y) in an in-plane direction of the molding material Y satisfies the following formula (2). (1): Average molding shrinkage ratio (X)