在MM-2000型摩擦磨损试验机上考察了不同载荷和速度下纳米SiO2含量对聚醚砜酮(PPESK)复合材料摩擦磨损性能的影响,并利用扫描电子显微镜(SEM)观察分析PPESK及纳米SiO2/PPESK复合材料磨损表面形貌及磨损机理.结果表明:纳米SiO2不但可以提高PPESK的耐磨性,而且还有较好的减摩作用.在本研究的试验条件下,当纳米SiO2的质量分数为25%时,填充PPESK复合材料具有最佳摩擦学性能.随着载荷的增大,填充PPESK的摩擦系数降低,填料含量在20%质量分数以下时随载荷增大其耐磨性提高较明显,而填料含量超过20%质量分数时载荷对复合材料耐磨性的影响不大.
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