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利用胺基与C60 分子的加成反应 ,在 3 胺基丙基 三乙氧基硅烷 (APS)的自组装单分子膜 (SAMs)表面上成功的制备了与基底化学键结合的C60 SAMs。其表面水接触角约为 76° ,膜厚约为 1.15nm ,AFM形貌像显示其表面光滑、均匀 ,基本不含缺陷。摩擦学结果表明 ,APS自组装单分子膜由于其分子链短 ,膜的有序性差 ,表面颗粒聚集物及“针孔”等缺陷多 ,而不具有润滑作用。当在其上形成C60 单分子层膜后 ,表现出优异的摩擦学性能 ,摩擦系数约为 0 .0 9～ 0 .13,在给定实验条件下抗磨损寿命大于 10 0 0 0次 ,有望作为微型机械的边界润滑材料使用。
The C60 SAMs bonded to the substrate were successfully prepared on the SAMs surface of 3-aminopropyltriethoxysilane (APS) by the addition of amine groups and C60 molecules. The surface water contact angle of about 76 °, the film thickness of about 1.15nm, AFM morphology like the surface shows a smooth, uniform, essentially free of defects. Tribological results show that APS self-assembled monolayers do not have lubrication due to their short molecular chains, poor membrane order, surface particle aggregates and “pinholes” defects. When formed on the C60 monolayer film, showed excellent tribological properties, the friction coefficient of about 0.09 ~ 0.13, given the experimental conditions, anti-wear life of more than 10 0 0 times, is expected Used as boundary lubrication material for micro machines.