硅表面聚苯乙烯自组装超薄膜的制备及摩擦磨损性能研究

研究了苯乙烯 -乙烯基三乙氧基硅烷共聚物在羟基化基片上的自组装行为及聚合物超薄膜的摩擦磨损性能 .结果表明 ,自组装聚合物薄膜的厚度和均匀程度取决于聚合物成膜溶液的浓度 .与空白基底相比 ,自组装膜修饰的基底在低载荷下同钢对摩时的摩擦系数更低 ,耐磨寿命更长 .因此 ,自组装聚合物薄膜可以作为低载荷下硅基材料的减摩抗磨防护层

Preparation and Tribological Properties of Self-assembled Polystyrene Film

The self assembling behavior of styrene vinyl triethoxylsilane copolymer was examined. The qualities of the polymer films made from the polymer solutions of different concentrations in toluene were investigated by means of static water contact angle measurement, ellipsometric thickness measurement, surface composition analysis, and atomic force microscopic observation of the surface morphology. The friction and wear behavior of the self assembled film sliding against AISI 52100 steel was examined. It was found that the quality of the self assembled ultra thin polymer films is closely dependent on the concentration of the polymer solutions from which the film is prepared. This in turn leads to change in the friction and wear behavior of the self assembled ultra thin polymer films. The self assembled polymer films register low friction coefficient and long antiwear life in sliding against AISI 52100 steel, as compared with the silicon substrate. Thus they could be potential candidates as the friction reducing and wear resistant protective layers of Si based elements in micro systems.