Four lithium greases were prepared with paraffinic oil, naphthenic oil, poly-α-olefin (PAO) and polyol ester (PE), respectively. Their physiochemical, tribological and rheological properties were investigated. It was found that naphthenic oil-based grease exhibited the best colloidal stability. SEM analysis revealed that lithium fibers in PE-based grease showed a relatively flat network compared to the three-dimensional entangled structure of the other three greases. Tribological performance of greases differed from their corresponding base oils, which might be attributed to the different microstructure of lithium soap fibers. Three-dimensional entangled structure was more suitable for friction-reducing than flat network structure. Moreover, noise test revealed that naphthenic oil-based grease was suitable for low-noise bearing lubrication. This study provided fundamental guidance for the selection of base oil which is beneficial for the development of high-performance grease products.

分别用石蜡油、环烷油、聚α-烯烃（PAO）和多元醇酯（PE）制备了四种锂基润滑脂。研究了它们的理化、摩擦学和流变学特性。发现环烷油基润滑脂表现出最好的胶体稳定性。SEM 分析表明，与其他三种润滑脂的三维缠结结构相比，PE 基润滑脂中的锂纤维显示出相对平坦的网络。润滑脂的摩擦学性能与其相应的基础油不同，这可能归因于锂皂纤维的不同微观结构。三维缠结结构比平面网络结构更适合减摩。此外，噪音测试表明环烷油基润滑脂适用于低噪音轴承润滑。