聚合物／无机纳米复合材料润滑油添加剂的摩擦学功能设计

选择3种具有不同抗磨性能的纳米组分，制备了具有不同界面特性的聚合物／无机纳米复合材料；考察了纳米复合材料的减摩抗磨性能和机理，探讨了关于纳米复合材料润滑油添加剂的摩擦学功能设计准则。结果表明：对聚合物与无机纳米组分界面进行设计优化后能明显提高纳米复合材料的摩擦学性能。实现聚合物与无机纳米组分界面的优化设计后，聚合物与无机纳米组分之间具有更好的相容性，无机纳米组分在聚合物基体中分布更均匀；当聚合物基体在摩擦热和剪切作用下熔融分解后，裸露出来的具有高活性的无机纳米组分可在摩擦副接触表面形成具有良好摩擦学性能的表面膜。

Tribological Functional Design of Polymer/Inorganic Nanocomposite as Lubricating Oil Additives

Three kinds of inorganic nanoparticles were selected to prepare polymer/inorganic nanocomposites with different interfacial structure. The antiwear and friction-reducing properties and mechanisms of the nanocomposites as additives in AN 10 oil were investigated. The principle on the tribological functional design of polymer/inorganic nanocomposite additives was explored. Results indicated that the polymer/inorganic nanocomposites consisting of inorganic nanoparticles with good tribological behavior were good lubricating additives for AN 10 oil lubricated steel-steel contact. The polymer/inorganic nanocomposites with optimized interfacial structure possessed considerably improved tribological properties as compared with those without optimized interfacial structure. This is because the polymer/inorganic nanocomposites with optimized interfacial structure had good compatibility between the polymer matrices and inorganic nanoparticles, and the inorganic nanoparticles were more uniformly distributed in the polymeric matrices. During friction process, highly active inorganic nanoparticles exposed onto the sliding surfaces along with the decomposition of polymeric matrices by frictional heat and shearing gave birth to protective layers with excellent tribological properties.