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采用注塑成型法制备纳米SiC或Si3N4与玻璃纤维混杂填充PA6尼龙复合材料。采用MM-200型摩擦磨损试验机在干摩擦条件下考察了纳米颗粒含量及载荷对PA6复合材料摩擦磨损性能的影响。采用扫描电子显微镜观察分析磨损表面形貌及磨损机理。结果表明:纳米Si3N4与玻璃纤维混杂能使复合材料耐磨损性提高,以3%Si3N4与玻璃纤维混杂填充耐磨性最佳;而纳米SiC与玻璃纤维混杂会导致复合材料的磨损量增大,纳米SiC或Si3N4与玻璃纤维混杂填充PA6复合材料的摩擦系数都低于尼龙材料。
Preparation of nano-SiC or Si3N4 by injection molding and glass fiber hybrid filled PA6 nylon composite. The influence of the content of nano-particles and the load on the friction and wear properties of PA6 composite was investigated by MM-200 friction and wear testing machine under dry friction condition. Scanning electron microscopy was used to analyze the wear surface morphology and wear mechanism. The results show that the wear resistance of composites increases with the intermingling of nano-Si3N4 and glass fiber, and the wear resistance is best when mixed with 3% Si3N4 and glass fiber. The miscibility of nano-SiC and glass fiber will lead to the increase of composite wear , The friction coefficient of nano-SiC or Si3N4 and glass fiber hybrid filled PA6 composite materials are lower than the nylon material.