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采用原子力显微镜对3-氨基丙基-三乙氧基硅烷自组装分子膜成膜过程进行了表征,其成膜过程包括两个阶段,第一阶段为APS水解产物与基体表面发生聚合反应,表现为“岛”式结构数量增多.第二阶段为APS分子之间发生聚合反应,表现为“岛”式结构长大.在微摩擦磨损试验机对氨基硅烷摩擦特性的研究表明,在载荷为50mN时,钢球与APS自组装分子膜间的摩擦系数随滑动速度的增加而减小.在滑动速度为0.33×10-4m/s时,钢球与APS自组装分子膜间的摩擦系数随着载荷的增大逐渐减小,但变化幅度不大.
The atomic force microscopy of 3-aminopropyl-triethoxysilane self-assembled molecular film deposition process was characterized by two stages, the first stage of the APS hydrolyzate and the substrate surface polymerization reaction As the number of “island” type structures increased.The second stage was the polymerization reaction between APS molecules, showing the “island” type structure growth.Study on the friction characteristics of aminosilane in the micro-friction and wear testing machine showed that, When the load is 50mN, the friction coefficient between the ball and APS self-assembled molecular film decreases with the increase of the sliding velocity.When the sliding velocity is 0.33 × 10-4m / s, The friction coefficient decreases with the increase of load, but the change range is not big.