Rheological and tribological properties of poly-hexylnaphthalene/poly-α-olefin lithium grease

被引：0
|
作者：
Zhao Z. [1 ]
Chen C. [1 ]
Tang Q. [1 ]
Xu H. [1 ]
Liu L. [1 ]
Dong J. [1 ]
机构：
[1] Shanxi Key Laboratory of Chemical Product Engineering, College of Chemical Engineering and Technology, Taiyuan University of Technology, Shanxi, Taiyuan
来源：
Huagong Xuebao/CIESC Journal | 2023年 / 74卷 / 06期
关键词：
base oil; lithium grease; poly-hexylnaphthalene; rheological properties; tribological properties;
D O I：
10.11949/0438-1157.20230173
中图分类号：
学科分类号：
摘要：
Poly-hexylnaphthalene base oil was synthesized with 1-hexene and naphthalene catalyzed by ionic liquid (Et3NHCl-AlCl3). Lithium grease prepared by poly-α-olefin (PAO8) base oil was used as reference. Lithium grease with different soap contents was prepared by adjusting the complex ratio of poly-hexylnaphthalene and PAO8 in the base oil (10: 90, 20: 80, 30: 70 and 40: 60). The physicochemical properties of different grease samples were tested and characterized. Meanwhile, the rheometer and SRV-V friction and wear tester were used to systematically evaluate the effects of poly-hexylnaphthalene added on the rheological and tribological properties of lithium grease. And with the help of 3D white light interference analyzer, the worn surface of the steel disc was analyzed. The experimental results show that the combination of poly-hexylnaphthalene and PAO8 had excellent synergistic effect at the mass ratio of 20: 80. The addition of poly-hexylnaphthalene can significantly improve the thickening ability of PAO8 base oil and save the amount of thickener. At the same time, poly-hexylnaphthalene can improve the rheological and tribological properties of PAO8 lithium grease under the condition of higher temperature (85℃). © 2023 Chemical Industry Press. All rights reserved.
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页码：2555 / 2564
页数：9
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