关键词: 玻纤增强, 酚醛注塑料, 制备, 性能

Abstract: Key technical issues including the selection of base resin, the control of curing reaction and cured structure, and the dispersing of glass fiber fillers in the preparation of glass fiber reinforced phenolic injection molding materials were studied. Differences in the formed structure and morphology and curing rheological properties of phenolic injection molding materials prepared with different types of base resins were also investigated.By using blend resins of resol and novolac as base materials, optimizing raw materials formulation and preparation technology,a new kind of glass fiber reinforced phenolic injection molding material was obtained.The new material showed excellent mechanical properties, heat resistance and good flame retardant as well as suitable injection properties. Its Charpy notch impact strength was 4.3 kJ•m^-2, flexural strength was 137.4 MPa, heat distortion temperature was 245 ℃ and flame retardant properties passed the attestation of UL 94 V-0. In addition, it showed good dimension stability, insulation properties and had lower-cost advantage.

Key words: 玻纤增强, 酚醛注塑料, 制备, 性能