| 摘要 |
PURPOSE:To produce a fiber-reinforced foamed resin article with a high bending strength by adding a specified amt. of a thermoplastic resin melting at a specified temp. to a raw material compsn. comprising a thermosetting resin compound with a filler and a fibrous reinforcement for molding the fiber-reinforced foamed resin article. CONSTITUTION:A thermosetting resin (e.g. liq. resol phenol resin) is compounded with a filler (e.g. talc) and a fibrous reinforcement (e.g. glass fiber mat) to give a raw material compsn. for molding a fiber-reinforced foamed resin article. This compsn. is mixed with a thermoplastic resin (e.g. PVA) which melts at the highest temp. raised by the heat of curing reaction of the thermosetting resin in such an amt. of the thermoplastic resin that the matrix bonding strength of the base resin, the thermosetting resin, is not degraded, and then the mixture is foamed and cured. Thus, in the curing of the thermosetting resin, the thermoplastic resin melts and flows to penetrate between the base resin and the fibrous reinforcement, enhancing the bonding strength between them as a binder and thereby enabling an efficient production of a fiber-reinforced foamed resin article with a high bending strength. |
