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材料研究学报  2014, Vol. 28 Issue (6): 448-454    DOI: 10.11901/1005.3093.2014.119
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胍盐离子液体的合成及其对钢/钢摩擦副的摩擦性能研究*
于桂琴(),刘建军,梁永民
兰州大学化学化工学院 兰州 730000
Synthesis and Tribological Performance of Guanidinium Ionic Liquids as Lubricants for Steel /Steel Contacts
Guiqin YU(),Jianjun LIU,Yongmin LIANG
College of Chemistry and Engineering, Lanzhou University, Lanzhou 730000
引用本文:

于桂琴,刘建军,梁永民. 胍盐离子液体的合成及其对钢/钢摩擦副的摩擦性能研究*[J]. 材料研究学报, 2014, 28(6): 448-454.
Guiqin YU, Jianjun LIU, Yongmin LIANG. Synthesis and Tribological Performance of Guanidinium Ionic Liquids as Lubricants for Steel /Steel Contacts[J]. Chinese Journal of Materials Research, 2014, 28(6): 448-454.

全文: PDF(3254 KB)   HTML
摘要: 

采用先溴化再置换的方法合成了两种胍盐离子液体, 利用热重分析仪评价了离子液体的热稳定性。研究了这两种胍盐离子液体的摩擦学性能, 在扫描电子显微镜下观察了磨斑表面形貌, 并与膦嗪以及全氟聚醚和烷基咪唑离子液体进行对比。用X射线光电子能谱仪(XPS)分析了润滑机理。结果表明: 与膦嗪、全氟聚醚以及烷基咪唑离子液体相比, 胍盐离子液体对钢/钢摩擦副具有非常好的润滑作用, 其承载能力最强, 摩擦系数最小, 磨痕最浅, 并且增长链长可以有效地提高其减摩抗磨效果。
关键词 ： 材料科学基础学科,  离子液体,  摩擦学性能,  钢/钢摩擦副    
Abstract：

Two guanidinium ionic liquids were synthesized through a typical two-step way. The thermal stability of the ionic liquids was evaluated by a thermogravimetric analyzer. Their tribological properties were investigated in comparison with phosphazene, perfluorinated polyether and alkyl imidazole ionic liquid. The worn surface was examined by scanning electron microscope and X-ray photoelectron spectrometer. The results show that guanidinium ionic liquids are the best lubricant among the tested lubricants for steel/steel contacts. With the guanidinium ionic liquids as lubricants for the steel/steel couples exhibit the strongest carrying capacity, the lowest friction coefficient and the smallest wear volume.
Key words： foundational discipline in materials science    ionic liquids    tribological properties    steel/steel contacts
收稿日期: 2014-03-14     
基金资助:* 中央高校基本科研业务费专项资金lzujbky-2013-181资助项目。
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于桂琴
刘建军
梁永民

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https://www.cjmr.org/CN/10.11901/1005.3093.2014.119      或      https://www.cjmr.org/CN/Y2014/V28/I6/448

图1  润滑剂的结构式
图2  胍盐离子液体的合成
图3  胍盐离子液体的热失重曲线
Load/N Friction coefficient
Room temperature 150℃
BDHG BDOG B106 X-1P PFPE BDHG BDOG B106
100
200
300
400
500
600
700
800 		0.060
0.061
0.060
0.052
0.055
0.051
0.055
0.052 		0.060
0.060
0.055
0.053
0.052
0.050
0.050
0.045 		0.061
0.070
0.060
0.065
0.061
-
-
- 		0.090
0.080
-
-
-
-
-
- 		0.125
0.113
0.110
-
-
-
-
- 		0.050
0.051
0.050
0.052
0.054
0.060
0.061
0.055 		0.051
0.045
0.040
0.040
0.061
-
-
- 		0.092
0.093
0.092
0.089
-
-
-
-
表1  不同载荷下离子液体、X-1P以及PFPE润滑下的摩擦系数
Load/N Wear volume loss / ×10-4 mm3
Room temperature 150℃
BDHG BDOG B106 X-1P PFPE BDHG BDOG B106
100
200
300
400
500
600
700
800 		--
--
1.27
3.54
4.33
5.97
7.22
8.35 		--
--
--
--
0.95
1.91
2.62
4.61 		--
3.47
5.42
11.32
13.74
-
-
- 		1.62
4.57
-
-
-
-
-
- 		1.42
3.87
6.03
-
-
-
-
- 		4.29
17.89
20.30
23.32
24.71
25.78
26.32
27.39 		3.96
6.35
6.64
10.15
13.31
-
-
- 		6.15
34.48
176.79
250.27
-
-
-
-
表2  载荷对离子液体、X-1P以及PFPE润滑下的下试盘磨损体积损失的影响
图4  室温下载荷为100 N时不同润滑剂润滑下的钢盘磨斑形貌
图5  胍盐离子液体润滑下钢盘磨斑表面元素的XPS谱
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