均质化处理对锂基润滑脂微观结构和性能的影响  

Effect of Homogenization Treatment on Microstructure and Properties of Lithium Grease

作　　者：任佳 徐状 王卓群 蔡浩鹏 王晓波[1,3] REN Jia;XU Zhuang;WANG Zhuoqun;CAI Haopeng;WANG Xiaobo(State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou Gansu 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;Qingdao Center of Resource Chemistry and New Materials,Qingdao Shandong 266000,China;Qingdao Lubemater Lubricating Material Technology Co.,Ltd.,Qingdao Shandong 266000,China)

机构地区：[1]中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000 [2]中国科学院大学,北京100049 [3]青岛市资源化学与新材料研究中心,山东青岛266000 [4]青岛中科润美润滑材料技术有限公司,山东青岛266000

出　　处：《润滑与密封》2022年第1期17-22,共6页Lubrication Engineering

基　　金：中国科学院战略性先导科技专项C类(XDC04020300)。

摘　　要：为探讨均质化对润滑脂稠化剂微观结构和性能影响,利用精密三辊研磨机以不同辊间距研磨锂基润滑脂,系统研究研磨前后锂基润滑脂的微观结构、锥入度、滴点、机械安定性、胶体安定性和流变学性能,并分析稠化剂微观结构与润滑脂性能的相关性。结果表明:与未研磨的润滑脂相比,研磨可提高锂基润滑脂稠化剂的分散均匀程度;研磨后润滑脂的锥入度显著降低;随着研磨辊间距的减小,胶体安定性和结构强度逐渐升高,机械安定性降低;润滑脂的性能与稠化剂的微观结构具有显著的相关性,锂基润滑脂性能的变化是由于研磨处理使稠化剂和基础油相互作用的比表面积增大,从而增强了其相互作用力。In order to study the effect of homogenization treatment on microstructure and properties of grease,lithium grease was milled by precision three-roller mill with different roller spacing.The microstructure,cone penetration,dropping point,mechanical stability,colloidal stability and rheological properties of the lithium grease before and after milling were systematically studied,and the correlation between the performance of grease and the microstructure of thickener was analyzed.The results show that the milling can improve the uniformity of the lithium grease thickener compared with the non-milling grease.The penetration value of the milled grease decreases significantly.As the roller spacing decreasing,the colloid stability and the structural strength of the milled grease gradually increase,while the mechanical stability decreases.There is a significant correlation between the performance of grease and the microstructure of thickener.The milling can improve the dispersion of thickener.The change in the performance of lithium grease is due to the increase in the specific surface area between the thickener and the base oil because of milling treatment,which increases the interaction force.

关 键 词：研磨处理 锂基润滑脂 微观结构 胶体安定性 流变学性能 

分 类 号：TH117.2[机械工程—机械设计及理论]