受限纳米间隙中水基润滑液分子行为特性及润滑机制研究

Worldwide oil depletion and serious environmental pollution problems has draw public attention. Although aqueous liquids has many applications in many fields, such as manufacturing, mechanical transmission, medicine,and so on, as to the strong corrosivity and the weak film formation ability,the progress of the application of aqueous lubrication is still limited by several disadvantages. The most effective and basic approach to develop the application of aqueous lubrication is to reveal its microscopic mechanism. This project is aiming to reveal the microscopic behavior of aqueous lubricants which own perfect lubricity. By combining the high-resolution spectral analysis appraoch with the microscopic observation technology, the in situ observation of the contact region can be achieved. Based on this in situ observation setup, the movement and obsorption behaviors of different components, the variation of the molecular structure and concentration will be observed and analysed. Meanwhile the surface morphology and components of the friction pairs will be monitored in the lubricating process. As a result, the relationship between the lubrication and the and interaction mechanism of aqueous lubricant confined in a nano gap can be summarized. Furthermore, taking the distinguished changes in friction and film formation process as reference, and directed by the theory of molecular spectroscopy, interfacial physical chemistry,and fluid dynamics and other relative theories, we will illuminate the lubrication mechanism of typical aqueous lubrication systems, and propose effective optimized formula of components. The work of this project will not only have significant value in revealing the mechanism of aqueous lubrication and completing the lubrication theory, but also can hopefully provide important direction for the application of aqueous lubricants.

面临全球环境污染、石油枯竭等问题，水基液的经济、环保、冷却性好、易降解等特点使其在制造业、机械传动、生物医疗等领域的应用发展迅速，但作为润滑剂仍然存在腐蚀性强、润滑能力不足等问题。掌握水基润滑的微观机理是使其应用得以发展的根本途径。本课题针对具有优秀润滑特性的水基润滑液微观行为，将高分辨光谱分析技术与成像技术相结合，对接触区不同区域内水基润滑液各组分的吸附、运动，以及分子的结构、浓度等特性变化进行原位在线观测和分析，结合润滑过程中固体表面微观形貌、化学成分的变化，与润滑过程中摩擦力、膜厚的变化规律相匹配，总结水基润滑状态与纳米级润滑膜物理化学特性关系及水基润滑剂与固体表面的微观作用机制；利用分子光谱学、界面物理化学、流体力学等相关理论，揭示典型水基润滑体系的润滑机制，并提出优化组分配制方案。本课题的研究不但对于丰富润滑理论体系有重要学术意义和价值，也能够对水基润滑的应用起到指导作用。

面临全球环境污染、石油枯竭等问题，水基液的经济、环保、冷却性好、易降解等特点使其在制造业、机械传动、生物医疗等领域的应用发展迅速，但作为润滑剂仍然存在腐蚀性强、润滑能力不足等问题。掌握水基润滑的微观机理是使其应用得以发展的根本途径。本课题针对具有优秀润滑特性的水基润滑液微观行为，将高分辨光谱分析技术与成像技术相结合，围绕固液界面相互作用规律与水基润滑特性之间的关系的科学问题，探索具有优秀润滑特性的水基润滑液润滑微观机制。突破摩擦学传统研究手段，成功研制了适用于水基润滑体系，尤其是润滑界面的在线微观分子级行为观测的探测平台；进一步，在研发新技术、新平台的基础上，在水基/水合润滑体系的剪切行为、接触区微观流动行为、固液界面分子级成键等行为取得了一系列突破性进展，从界面相互作用、分子结构、摩擦副配伍等角度进行系统研究，获得了具有普适性的水基润滑本质微观特性。揭示了典型水基润滑体系的润滑机制，指导了新型润滑材料的开发。