SRTM成形品の樹脂含浸性および力学的特性に及ぼす表面処理の影響

抄録

To improve the performances, influence of surface treatment on impregnating property and mechanical properties of molded composites made by Structural Resin Transfer Molding (SRTM) were investigated. Three types of continuous glass fiber (E-glass) strand mat as reinforcement were used; original mat, heat cleaning and heat cleaning with coupling agent. In the original mat a binder for tightening fiber strands was used whereas in heat cleaned mat the binder and coupling agent were burned out by heat cleaning, so that fiber strands were spread out. Molding composites in flat shape were fabricated. Bending and tensile tests were performed. Nevertheless the impregnating property of the heat cleaning was far superior to that of the original due to spreading out strands, while the mechanical properties of the heat cleaning were far inferior to those of the original. Reduction of fiber strength by heat cleaning was caused. When the heat cleaning was treated with coupling agent, superior mechanical properties could be obtained because of improvement of adhesion at fiber/matrix interface.