Abstract: To improve the impregnation quality of glass fiber reinforced thermoplastic composite, the three-dimensional hybrid method acts as a new kind of technology for felting process has been developed in this study, which could greatly increase the mechanical properties of the glass fiber reinforced thermoplastic composite. Glass fiber and matrix resin in this technology will be drawn into sarciniform, then the fibers are fully separated and the three-dimensional blended felt can be obtained by the improved opening, mixture, airflow, and lapping machines. The blended felts are made into composite plates by laminate hot-press approach, and mechanics performance testing of the composite plates is conducted. The experimental results show that there is a stronger adaptability to glass fiber reinforced plate impregnating process for three-dimensional blended felt. The three-dimensional blended felt shows a shorter impregnating distance and an increased interface between the matrix resin and the glass fiber, which make the reinforced fiber glass impregnated more thoroughly. The impregnation quality of thermoplastic composite plates made by three-dimensional hybrid method is better than that made by traditional technology. Moreover, the tensile strength, bending strength, and impact strength of the plates made by the new kind of technology has greatly improved under the same weight and glass fiber content.

Key words: glass fiber reinforced thermoplastic composite, three-dimensional blended felt, laminate hot-press approach, glass fiber, resin