Page 73 - 《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.2019174

脲基功能化的咪唑无卤素离子液体对复合

锂基润滑脂摩擦学性能的影响

2
1,2*
曲铭海 , 张朝阳 , 杨志权 , 于强亮 , 蔡美荣 2
2,3*
2
(1. 德州学院 纺织服装学院，山东 德州 253023;
2. 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;
3. 中国石油兰州润滑油研究开发中心，甘肃 兰州 730060)
摘 要: 合成了两种脲基功能化的咪唑无卤素离子液体DOSS-1和DOSS-4. 采用SRV-V微动摩擦磨损试验机和
Bruker-NPFLEX表面非接触光学三维轮廓仪，考察这两种离子液体作为2号复合锂基润滑脂(G)的减摩抗磨添加剂
的摩擦学性能. 摩擦测试结果表明：这两种功能化咪唑离子液体添加到2号复合锂基润滑脂(G)中均表现出优异的减
摩抗磨性能. 在添加量同等条件下，长链的DOSS-4表现出优于DOSS-1的减摩抗磨性能. 当添加质量分数为3%时，
DOSS-4和DOSS-1的减摩抗磨性能最佳. 利用表面轮廓和扫描电镜进一步分析了磨斑表面的形貌，同时结合X射线
光电子能谱仪(XPS)进一步分析了磨斑表面主要化学元素组成，阐明其摩擦机理. 该离子液体能够显著地降低摩擦
磨损是因其在摩擦副表面形成了含N元素和S元素的化学反应膜.
关键词: 脲基; 咪唑离子液体; 多库酯; 锂基润滑脂; 摩擦学性能
中图分类号: TH117.1 文献标志码: A 文章编号: 1004-0595(2020)03–0339–07

Effect of Urea-Containing Imidazole Halogen-Free Ionic Liquid

on Tribological Properties of Composite Lithium Grease

2
2
1,2*
2,3*
QU Minghai , ZHANG Chaoyang , YANG Zhiquan , YU Qiangliang , CAI Meirong 2
(1. College of Textile and Clothing Engineering, Dezhou University, Shandong Dezhou 253023, China
2. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of
Sciences, Gansu Lanzhou 730000, China
3. PetroChina Lanzhou Lubricating Oil R&D Institute, Gansu Lanzhou 730060, China)
Abstract: Two urea based-functionalized imidazole halogen-free ionic liquids (IL)，DOSS-1 and DOSS-4 were
#
synthesized. As reduce friction and anti-wear additives for 2 lithium complex grease (G)，their tribological properties
were investigated using friction and wear tester (SRV-V) and surface non-contact optical 3D profiler (Bruker-NPFLEX).
The friction test results show that lithium complex grease with addition of ILs had excellent friction-reduction and anti-
wear performance. The addition of 3% DOSS-4 (or DOSS-1) produced excellent improvement for friction and wear. The
tribological property of DOSS-4-G is superior to DOSS-1-G of equivalent addition amount of IL. The surface
morphology of the worn surface was analyzed by a Bruker-NPFLEX 3D surface profile and scanning electron
microscopy. The chemical states of the main elements of wear spot was determined by X-ray photoelectron spectroscopy
and the lubrication mechanism was clarified. The significant effects for IL on the friction-reduction and anti-wear
performances were attributed to the formation of tribofilm containing elements N and S on the worn surfaces.

Received 12 September 2019, revised 12 November 2019, accepted 27 December 2019, available online 28 May 2020.
*Corresponding author. E-mail: mhqu@163.com; yql@licp.cas.cn, Tel: +86-931-4968177.
The project was supported by Gansu International Cooperation Project (18ZD2WA011), China Postdoctoral Science Foundation
Funded Project (2019M653798) and the National Natural Science Foundation of China (51705504).
甘肃省国际合作项目(18ZD2WA011)，中国博士后基金面上项目(2019M653798)和国家自然科学基金青年项目(51705504)资助.