BASE MATERIAL FOR PREFORM, METHOD FOR MANUFACTURING THE MATERIAL, AND THERMOSETTING BINDER RESIN POWDER

摘要

PROBLEM TO BE SOLVED: To provide a reinforcing fiber base material for a preform having excellent shaping property and shape stability and being re-adhesive. SOLUTION: The base material for a preform comprises a sheet type reinforcing fiber base material and a powder of a thermosetting binder resin having at least two unsaturated groups in the molecule, a melting point (Tm) of 40 to 150°C and an average particle diameter of 20 to 500μm deposited on one or both surfaces of the base material in an amount of 0.1 to 20 wt.% with respect to the reinforcing fiber base material. Preferably, the powder of the binder resin essentially comprises a vinyl ester resin or an acrylic resin having a glass transition temperature (Tg) of 35 to 120°C and viscosity of 200 to 1,000 Pa s at a temperature of the melting point (Tm)+10°C. COPYRIGHT: (C)2010,JPO&INPIT