The antiwear properties of ionic liquids (ILs) as lubricant additives were studied with polyethylene glycol (PEG) used as the lubricant base oil. The quantum parameters of the ILs were calculated using a Hartree–Fock ab initio method. Correlation between the scale of the wear scar diameter and quantum parameters of the ILs was studied by multiple linear regression (MLR) analysis. A quantitative structure tribo-ability relationship (QSTR) model was built with a good fitting effect and predictive ability. The results show that the entropy of the ILs is the main descriptor affecting the antiwear performance of the lubricant system. To improve the antiwear performance of the lubricants, the entropy of the system should be decreased, reducing the system randomness and increasing the system regularity. A major influencing factor on the entropy of a system is the intra- and intermolecular hydrogen bonds present. Therefore, enhanced antiwear properties of lubricants could be achieved with a three-dimensional netlike structure of lubricant formed by hydrogen bonding.
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Wuhan,
Hubei Province 430030,
e-mail: tongji892@sina.com
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September 2019
Research-Article
Estimating Antiwear Properties of Ionic Liquids as Lubricant Additives Using a QSTR Model
Ze Song,
Ze Song
School of Chemical and Environmental Engineering,
Wuhan,
Hubei Province 430023,
e-mail: Songz913@163.com
Wuhan Polytechnic University
,Wuhan,
Hubei Province 430023,
China
e-mail: Songz913@163.com
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Tao Chen,
Wuhan,
Hubei Province 430030,
e-mail: tongji892@sina.com
Tao Chen
Tongji Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology
,Wuhan,
Hubei Province 430030,
China
e-mail: tongji892@sina.com
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Tingting Wang,
Tingting Wang
School of Chemical and Environmental Engineering,
Wuhan,
Hubei Province 430023,
e-mail: tt_wang88@163.com
Wuhan Polytechnic University
,Wuhan,
Hubei Province 430023,
China
e-mail: tt_wang88@163.com
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Zhan Wang,
Zhan Wang
College of Food Science and Engineering,
Wuhan,
Hubei Province 430023,
e-mail: wangzh_whpu1165@163.com
Wuhan Polytechnic University
,Wuhan,
Hubei Province 430023,
China
e-mail: wangzh_whpu1165@163.com
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Xinlei Gao
Xinlei Gao
1
School of Chemical and Environmental Engineering,
Wuhan,
Hubei Province 430023,
e-mail: gaoxl0131@163.com
Wuhan Polytechnic University
,Wuhan,
Hubei Province 430023,
China
e-mail: gaoxl0131@163.com
1Corresponding author.
Search for other works by this author on:
Ze Song
School of Chemical and Environmental Engineering,
Wuhan,
Hubei Province 430023,
e-mail: Songz913@163.com
Wuhan Polytechnic University
,Wuhan,
Hubei Province 430023,
China
e-mail: Songz913@163.com
Tao Chen
Tongji Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology
,Wuhan,
Hubei Province 430030,
China
e-mail: tongji892@sina.com
Tingting Wang
School of Chemical and Environmental Engineering,
Wuhan,
Hubei Province 430023,
e-mail: tt_wang88@163.com
Wuhan Polytechnic University
,Wuhan,
Hubei Province 430023,
China
e-mail: tt_wang88@163.com
Zhan Wang
College of Food Science and Engineering,
Wuhan,
Hubei Province 430023,
e-mail: wangzh_whpu1165@163.com
Wuhan Polytechnic University
,Wuhan,
Hubei Province 430023,
China
e-mail: wangzh_whpu1165@163.com
Xinlei Gao
School of Chemical and Environmental Engineering,
Wuhan,
Hubei Province 430023,
e-mail: gaoxl0131@163.com
Wuhan Polytechnic University
,Wuhan,
Hubei Province 430023,
China
e-mail: gaoxl0131@163.com
1Corresponding author.
Contributed by the Tribology Division of ASME for publication in the Journal of Tribology. Manuscript received November 12, 2018; final manuscript received May 27, 2019; published online June 12, 2019. Assoc. Editor: Satish V. Kailas.
J. Tribol. Sep 2019, 141(9): 091801 (7 pages)
Published Online: June 12, 2019
Article history
Received:
November 12, 2018
Revision Received:
May 27, 2019
Accepted:
May 27, 2019
Citation
Song, Z., Chen, T., Wang, T., Wang, Z., and Gao, X. (June 12, 2019). "Estimating Antiwear Properties of Ionic Liquids as Lubricant Additives Using a QSTR Model." ASME. J. Tribol. September 2019; 141(9): 091801. https://doi.org/10.1115/1.4043904
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