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1. (WO2018061516) FIBER-REINFORCED PLASTIC MOLDING MATERIAL, METHOD FOR PRODUCING SAME, AND MOLDED PRODUCT

Pub. No.:    WO/2018/061516    International Application No.:    PCT/JP2017/029710
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Tue Aug 22 01:59:59 CEST 2017
IPC: C08J 5/24
C08K 5/09
C08K 7/02
C08L 63/00
C08L 71/10
Applicants: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
日鉄ケミカル&マテリアル株式会社
Inventors: OTSUKI Akihisa
大槻 晃久
Title: FIBER-REINFORCED PLASTIC MOLDING MATERIAL, METHOD FOR PRODUCING SAME, AND MOLDED PRODUCT
Abstract:
Provided is a fiber-reinforced plastic (FRP) molding material that exhibits good moldability, which is a characteristic of phenoxy resins, while being able to suppress changes in mechanical characteristics in high temperature environments, which was a problem caused by crosslinking reactions. This fiber-reinforced plastic molding material is characterized in that: a matrix resin composition contains a phenoxy resin (A), an epoxy resin (B) and a crosslinking agent (C) as essential components, the crosslinking agent (C) is a specific tetracarboxylic acid dianhydride and is contained at a quantity whereby the amount of acid anhydride groups in the crosslinking agent (C) is in the range of 0.6-1.3 moles relative to 1 mole of secondary hydroxyl groups in the phenoxy resin (A); the matrix resin composition is a solid at normal temperature and has a melt viscosity of 3000 Pa·s or less at any temperature within the range 160-220ºC; and a fine powder of the matrix resin composition adheres to the surface of a reinforcing fiber substrate.