锂基润滑脂微观结构的调控及其对轴承噪音性能的影响规律研究

Lubricating grease is the key basic material for the manufacture and operation of high-end bearings and the key factor affecting the high reliability and longevity of bearings. Basic properties and service performance of grease are closely related to its microstructure. At present, with the development of precision machinery and military equipment, bearing vibration and noise has drawn more and more attention. Grease is becoming one of the major factors affecting bearing noise. Due to the lack of systematic research on low noise grease, domestic low noise greases are still largely dependent on import. This project will study the relationship between microstructure of lithium grease with the preparation process, chemical components as well as environmental/working conditions, and master the tailoring technology of the microstructure of lithium grease. Scanning electron microscope (SEM), transmission electron microscope (TEM), atomic force microscope (AFM) and BeQuiet+ will be employed to characterize the microstructure and noise performance. The relationship between microstructure and noise characteristics of lithium grease will be carefully studied, and then the relationship between the microstructure and noise characteristics of lithium base grease will also be revealed from micro level. The research of this project is expected to provide a theoretical and technical foundation for the research and development of lithium based low-noise grease and supports the development of high-end bearing manufacturing industry in China.

润滑脂是高端轴承制造与运行的关键基础材料，也是影响轴承高可靠、长寿命运行的关键因素。润滑脂的基本性能和使役行为与其微观结构密切相关。随着精密机械及军事装备的不断发展，轴承振动和噪声受到越来越多的重视，润滑脂已经成为影响轴承噪音的关键因素之一。由于缺乏对低噪音润润脂的系统研究，国内低噪音润滑脂仍主要依赖进口。本项目将通过对锂基润滑脂制备工艺、化学组分以及环境工况条件等多重因素对锂基润滑脂皂纤维生长与演变规律研究，掌握锂基润滑脂微观结构的调控技术；采用扫描电镜（SEM）、透射电镜（TEM）及原子力显微镜（AFM）等微观表征设备对以及BeQuiet+等轴承噪音测试设备对其微观结构与噪音性能进行表征测试；研究锂基润滑脂微观结构与噪音性能之间的关系，进而从微观层面揭示锂基润滑脂微观结构与噪音性能之间的关系规律。本项目有望为锂基低噪音润滑脂的研究开发奠定理论与技术基础，支撑我国高端轴承制造业的发展。

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