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以液相溶剂热合成和表面改性技术制备的纳米MoS2作为减磨剂,耐磨性差的聚甲基丙烯酸甲酯(PMMA)为聚合物基,借助超声分散与溶液热流延技术制备MoS2/PMMA纳米复合材料.通过摩擦磨损试验研究纳米MoS2对PMMA摩擦性能的影响,并探讨材料的宏观组成、微观结构与摩擦学特性之间的关系.实验表明,在聚合物基PMMA引入MoS2纳米粒子,其摩擦系数降幅达50%以上,且降幅有随MoS2加入量并增的趋势.十六烷基三甲基溴化铵(CTAB)表面修饰改性的MoS2对PMMA减摩效果最佳,加入质量分数5%即可使其摩擦系数降低73%.
The nano-MoS2 prepared by liquid-phase solvent thermal synthesis and surface modification technology was used as the anti-wear agent and the poor wear resistance of PMMA was polymer matrix. The MoS2 / PMMA was prepared by ultrasonic dispersion and solution thermal casting Nanocomposites.The friction and wear tests were carried out to investigate the effect of nano-MoS2 on the tribological properties of PMMA and the relationship between the macroscopic composition, microstructure and tribological properties of the composites.Experiments showed that the introduction of MoS2 nanoparticles into polymer- The coefficient of friction decreased by more than 50%, and the decline with the increase of the amount of MoS2 and the trend.Cetyl trimethyl ammonium bromide (CTAB) modified MoS2 PMMA best anti-friction effect, adding the mass fraction 5% to reduce the coefficient of friction 73%.