Page 112 - 《摩擦学学报》2020年第3期

第 40 卷 第 3 期 摩 擦 学 学 报 Vol 40 No 3
2020 年 5 月 Tribology May, 2020

DOI: 10.16078/j.tribology.2020006

胺分子结构对聚脲润滑脂流变学性能的影响

1
1,2
3
1,2
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徐 状 , 任 佳 , 赵改青 , 王卓群 , 蔡浩鹏 , 王晓波 1,2*
(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. 青岛市资源化学与新材料研究中心，山东 青岛 266100;
3. 青岛中科润美润滑材料技术有限公司，山东 青岛 266100)
摘 要: 以三种具有典型分子结构的单胺为主要原料，采用同一种方法制备了三种相同稠化剂含量的聚脲润滑脂.
利用扫描电镜(SEM)表征了三种聚脲润滑脂中稠化剂的微观结构. 结果表明：十八胺聚脲润滑脂的稠化剂形貌为缠
绕的纤维结构，环己胺和苯胺聚脲润滑脂的稠化剂形貌为堆积的棒状. 同时，研究探讨了三种聚脲润滑脂在不同温
度下的触变性能、储能模量、损耗模量和表观黏度的变化规律，并解释了其流变学性能与稠化剂的微观形貌和分子
间作用力的关联性. 本研究结果将为聚脲润滑脂的设计开发提供良好的理论指导，并促进聚脲润滑脂性能研究与应
用的发展.
关键词: 聚脲润滑脂; 流变学性能; 触变性能; 模量; 表观黏度
中图分类号: TH117.3 文献标志码: A 文章编号: 1004-0595(2020)03–0378–07

Effect of Amine Molecular Structure on Rheological Properties

of Polyurea Grease

1,2 1 1,2 1,2 3 1,2*
XU Zhuang , REN Jia , ZHAO Gaiqing , WANG Zhuoqun , CAI Haopeng , WANG Xiaobo

(1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese
Academy of Sciences, Gansu Lanzhou 730000, China
2. Qingdao Center of Resource Chemistry and New Materials, Shandong Qingdao 266100, China
3. Qingdao lubemater Lubricating Material Technology Co, Ltd, Shandong Qingdao 266100, China)
Abstract: Three polyurea greases with the same mass fraction of thickener were prepared by the same method using
three kinds of monoamines with typical molecular structure. The microstructure of thickeners in three polyurea greases
was characterized by scanning electron microscopy. The results showed that the microstructure of thickener in
octadecylamine polyurea grease was entangled fiber structure, and which in cyclohexylamine and aniline polyurea
grease was stack spindle. Moreover, the thixotropic properties, storage modulus, loss modulus, and apparent viscosity of
three polyurea greases were investigated at different temperatures. The relationship between rheological properties of
polyurea greases and the micromorphology and intermolecular forces of the thickener was explained. This study
provided a good theoretical guidance for the design and development of polyurea greases, and promote the research and
application of polyurea greases.
Key words: polyurea grease; rheological properties; thixotropic properties; modulus; apparent viscosity

聚脲润滑脂是为满足高温、高速和高负荷运行的 性能优异的润滑脂，被广泛应用于航空、冶金、汽车、

近代工业设备对润滑材料的苛刻需求而发展的一种 电器和军事装备等领域 [1-3] . 与金属皂基的稠化剂体系

Received 6 January 2020, revised 19 February 2020, accepted 28 February 2020, available online 28 May 2020.
*Corresponding author. E-mail: wangxb@licp.cas.cn, Tel: +86-13730987781.
The project was supported by the National Key R&D Program of China(2018YFB2000601).
国家重点研发计划(2018YFB2000601)资助.