油溶性离子液体与T321及二氧化硅的协同润滑性能研究

doi:10.11949/0438-1157.20210472

化工学报 ›› 2021, Vol. 72 ›› Issue (10): 5310-5318.DOI: 10.11949/0438-1157.20210472

油溶性离子液体与T321及二氧化硅的协同润滑性能研究

杨志权^1,²(),张朝阳¹,吕会英²,陈国庆¹,黄卿²,汪利平²,于强亮^1,²(),蔡美荣¹,汤仲平²,周峰¹

^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.中国石油兰州润滑油研究开发中心，甘肃兰州 730060

收稿日期:2021-04-06 修回日期:2021-05-13 出版日期:2021-10-05 发布日期:2021-10-05
通讯作者: 于强亮
作者简介:杨志权（1995—），男，硕士研究生，1614221751@qq.com
基金资助:
国家自然科学基金项目(52075524);中国博士后基金面上项目(2019M653798);载人航天预研项目(040101);兰州创新创业人才项目(2018-RC-67);甘肃省自然科学基金项目(20JR10RA048);中国科学院青年创新促进会项目(2018454)

Research on synergistic lubrication performance of oil-soluble ionic liquid, T321 and silica

Zhiquan YANG^1,²(),Chaoyang ZHANG¹,Huiying LYU²,Guoqing CHEN¹,Qing HUANG²,Liping WANG²,Qiangliang YU^1,²(),Meirong CAI¹,Zhongping TANG²,Feng ZHOU¹

^1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China
^2.PetroChina Lanzhou Lubricating Oil R＆D Institute, Lanzhou 730060, Gansu, China

Received:2021-04-06 Revised:2021-05-13 Online:2021-10-05 Published:2021-10-05
Contact: Qiangliang YU

摘要/Abstract

摘要：

为改善PAO10体系的润滑性能，合成了一种油溶性离子液体并与T321及二氧化硅进行对比。通过同步热分析仪测试PAO10润滑体系的热稳定性；通过SRV-IV微动摩擦磨损试验机对比评价不同离子液体的摩擦学性能；通过非接触式三维轮廓仪和扫描电子显微镜对磨斑形貌和磨损体积进行了表征；通过EDS和XPS元素分析对磨斑表面化学成分和化学变化进行分析。结果表明合成的油溶性离子液体可以显著提高PAO10体系的热稳定性，且无论在常温还是高温下，都具有优异的减摩抗磨性能，并极大地提高了PAO10体系的极压承载性能。通过实验结果推测极性元素P、S在摩擦过程中发生摩擦化学反应，生成的摩擦化学膜有效地抑制摩擦副之间的直接接触，提高了PAO10体系的减摩抗磨性能。

关键词: 油溶性离子液体, T321, 二氧化硅, 协同润滑, 减摩抗磨

Abstract:

In order to improve the lubrication performance of PAO10 system, an oil-soluble ionic liquid was synthesized and compared with T321 and silica. The thermal stability of PAO10 lubrication system was tested by a synchronous thermal analyzer. The tribological properties of different ionic liquids were compared and evaluated by the SRV-IV fretting friction and wear tester. The wear scar morphology was measured by a non-contact three-dimensional profiler and a scanning electron microscope and the wear volume were characterized. The chemical composition and chemical changes of the wear surface were analyzed by EDS and XPS element analysis. The results show that the oil soluble ionic liquids can significantly improve the thermal stability of PAO10 system. It has excellent anti-friction and anti-wear properties no matter at room temperature or high temperature, and greatly improves the bearing capacity of PAO10 system. XPS analysis results show that the tribochemical reaction of polar elements P and S occurs in the friction process, and the tribochemical film formed can effectively inhibit the direct contact between the friction pairs, and improve the friction reducing and anti-wear performance of PAO10 system.

Key words: oil-soluble ionic liquid, T321, silica, collaborative lubrication, anti-friction and anti-wear

中图分类号:

TH 117

杨志权,张朝阳,吕会英,陈国庆,黄卿,汪利平,于强亮,蔡美荣,汤仲平,周峰. 油溶性离子液体与T321及二氧化硅的协同润滑性能研究[J]. 化工学报, 2021, 72(10): 5310-5318.

Zhiquan YANG,Chaoyang ZHANG,Huiying LYU,Guoqing CHEN,Qing HUANG,Liping WANG,Qiangliang YU,Meirong CAI,Zhongping TANG,Feng ZHOU. Research on synergistic lubrication performance of oil-soluble ionic liquid, T321 and silica[J]. CIESC Journal, 2021, 72(10): 5310-5318.

图/表 10

图1 P.S.和T321的分子结构

Fig.1 Molecular structures of P.S. and T321

图2 测试油样的TG曲线

Fig.2 TG curves of test oil samples

表1 热稳定性

Table 1 Thermal stability

Lubricants	TG temperature per mass loss/℃
Lubricants	10%	20%	50%
PAO10	288.62	312.12	345.92
1% P.S.	318.94	346.84	386.14
1% P.S.@SiO₂	302.79	336.69	379.89
1% SiO₂	293.32	322.52	365.82
1% T321	271.47	298.07	343.97

图3 常温下摩擦系数与磨损体积(SRV 温度:25℃,频率25 Hz,振幅1 mm,载荷200 N)

Fig.3 Friction coefficient and wear volume at room temperature(SRV: temperature 25℃, frequency 25 Hz, amplitude 1 mm, load 200 N)

图4 常温下下试样的三维轮廓图和SEM图以及EDS分析

Fig.4 Three-dimensional profile, SEM and EDS analysis of the samples at room temperature

图5 高温下摩擦系数和磨损体积(SRV: 温度100℃,频率:25 Hz,振幅1 mm,载荷200 N)

Fig.5 Diagram of friction coefficient and wear volume at high temperature (SRV: temperature 100℃, frequency 25 Hz, amplitude 1 mm, load 200 N)

图6 高温下下试样的三维轮廓图和SEM图以及EDS分析

Fig.6 Three-dimensional profile, SEM and EDS analysis of the samples at high temperature

图7 高温极压摩擦系数曲线(SRV: 温度100℃,频率25 Hz,振幅1 mm)

Fig.7 High temperature extreme pressure friction coefficient curves(SRV: temperature 100℃, frequency 25 Hz, amplitude 1 mm)

图8 高温条件润滑后磨斑表面元素的XPS分析

Fig.8 XPS analysis of elements on the worn surface after high temperature lubrication

图9 润滑机理

Fig.9 Lubrication mechanism

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油溶性离子液体与T321及二氧化硅的协同润滑性能研究

Research on synergistic lubrication performance of oil-soluble ionic liquid, T321 and silica

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