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采用共混法制备了NBR/Fe3O4复合材料和NBR/SrO.6Fe2O3复合材料,使用UMT-2MT摩擦磨损试验机和2206型表面粗糙度测量仪对复合材料的摩擦系数和摩擦磨损状况进行了测试.通过扫描电子显微镜与X射线能量色散谱仪对NBR/Fe3O4复合材料的表面微观形貌以及纳米粒子在橡胶中的分布情况进行了探讨.结果表明:2种纳米材料的加入均能够改善NBR的耐磨性,其中NBR/Fe3O4复合材料的耐磨效果更佳.Fe3O4和SrO.6Fe2O32种纳米粒子的最佳添加量均为10%左右(质量分数).纳米Fe3O4粒子的加入使得NBR的摩擦系数与磨损率有较大幅度的减小,而纳米SrO.6Fe2O3在添加量为10%～30%的范围内,随着添加量的加大,摩擦系数与磨损率不断加大.NBR/Fe3O4复合材料在纳米粒子含量10%左右时具有较好的表面结构,且纳米Fe3O4粒子在复合材料中分布较为均匀.
NBR / Fe3O4 composites and NBR / SrO.6Fe2O3 composites were prepared by blending method. The friction coefficient and friction and wear state of the composites were tested by using UMT-2MT friction and wear tester and 2206 surface roughness measuring instrument. The surface morphology of the NBR / Fe3O4 composites and the distribution of the nanoparticles in the rubber were investigated by scanning electron microscopy and X-ray energy dispersive spectroscopy. The results show that the addition of two nanomaterials can improve the resistance of NBR / The wear resistance of NBR / Fe3O4 composites is better, and the best adding amount of Fe3O4 and SrO.6Fe2O32nanoparticles is about 10% (mass fraction) .The addition of nano-Fe3O4 particles makes the friction coefficient of NBR / While the wear rate decreased greatly. However, the friction coefficient and wear rate of SrO.6Fe2O3 nanocomposite increased with the addition of 10% ~ 30% In the nano-particles content of about 10% has a good surface structure, and nano-Fe3O4 particles in the composite material is more evenly distributed.