Mechanical Properties of Glass Fiber/ Basalt Fiber Reinforced Polypropylene Hybrid Composites Fabricated by the DFFIM Process

摘要

The direct fiber feeding injection molding (DFFIM) process is a kind of new ways which the thermoplastic material is injected with continuous fiber and molded in one operation. The objective of this research is to investigate the mechanical performances of Glass Fiber/ Basalt Fiber Reinforced Polypropylene Hybrid Composites. In this work, the hybrid composites were manufactured by DFFIM Process, where GFPP pellets were used as basic reinforcements system, continuous basalt fiber strands were used as hybrid fibers, and the PA6 and MAPP were used as coupling agent during fabrication. Mechanical testing like tensile test were carried out to investigate the hybrid effect. Optical microscope observation was taken to measure and count the fiber length. Scanning electron microscope observation of cross section was used to analysis the combination of fiber and resin. The result shows that the reinforcement of Basalt fibers and Glass fibers hybrid composites significantly influencing on the mechanical properties of the composites, and it's found that the addition of PA6 and MAPP could also improve the mechanical properties of the GFPP/BF hybrid composites to some extent.