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Friction 2016, 4(3): 257-265 https://doi.org/10.1007/s40544-016-0124-8
Research Article | Open Access | Issue | Published: 09 September 2016

Characterizing a lubricant additive for 1,3,4-tri-(2-octyldodecyl) cyclopentane: Computational study and experimental verification

Show Author's Information Jingyan NIAN1,  Yifan SI1,2,  Zhiguang GUO1,2( ),  Ping GAO1( ),  Weimin LIU1
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, China
Keywords:
lubrication mechanism, lubricant additive, 1,3,4-tri-(2-octyldodecyl) cyclopentane, computational screening, experimental verification
Cite this article:
NIAN J, SI Y, GUO Z, et al. Characterizing a lubricant additive for 1,3,4-tri-(2-octyldodecyl) cyclopentane: Computational study and experimental verification. Friction, 2016, 4(3): 257-265. https://doi.org/10.1007/s40544-016-0124-8
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Abstract Full text About this article

In order to increase the life of spacecraft, it is important to improve the comprehensive lubrication performance. Multiple alkylated cyclopentane (MAC) lubricants are presently gaining wide acceptance for actual space applications; adding extreme pressure additive is a strategy to improve lubrication performance. In this study, taking 1,3,4-tri-(2-octyldodecyl) cyclopentane as base oil, tricresol phosphate (traditional additive) and tri-(2-octyldodecyl) phosphate (developmental additive) have been screened computationally for compatibility, shear film forming and energy dissipation. Theoretical results indicate that (a) tricresol phosphate additive is not suited for addition to 1,3,4-tri-(2-octyldodecyl) cyclopentane lubricant due to limited compatibility; (b) tri-(2-octyldodecyl) phosphate is an excellent lubricant additive due to its perfect compatibility, ease of forming a shear film on the surface of friction pairs, higher strength, and low energy dissipation; and (c) lubrication occurs through the solid-liquid composite lubrication mechanism. These theoretical results were confirmed experimentally.


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About this article

Characterizing a lubricant additive for 1,3,4-tri-(2-octyldodecyl) cyclopentane: Computational study and experimental verification

Show Author's information Jingyan NIAN1, Yifan SI1,2, Zhiguang GUO1,2( ), Ping GAO1( ), Weimin LIU1
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, China

Abstract

In order to increase the life of spacecraft, it is important to improve the comprehensive lubrication performance. Multiple alkylated cyclopentane (MAC) lubricants are presently gaining wide acceptance for actual space applications; adding extreme pressure additive is a strategy to improve lubrication performance. In this study, taking 1,3,4-tri-(2-octyldodecyl) cyclopentane as base oil, tricresol phosphate (traditional additive) and tri-(2-octyldodecyl) phosphate (developmental additive) have been screened computationally for compatibility, shear film forming and energy dissipation. Theoretical results indicate that (a) tricresol phosphate additive is not suited for addition to 1,3,4-tri-(2-octyldodecyl) cyclopentane lubricant due to limited compatibility; (b) tri-(2-octyldodecyl) phosphate is an excellent lubricant additive due to its perfect compatibility, ease of forming a shear film on the surface of friction pairs, higher strength, and low energy dissipation; and (c) lubrication occurs through the solid-liquid composite lubrication mechanism. These theoretical results were confirmed experimentally.

Keywords: lubrication mechanism, lubricant additive, 1,3,4-tri-(2-octyldodecyl) cyclopentane, computational screening, experimental verification

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Publication history

Received: 27 June 2016
Revised: 16 August 2016
Accepted: 22 August 2016
Published: 09 September 2016
Issue date: June 2021

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© The author(s) 2016

Acknowledgements

This work is supported by the National Nature Science Foundation of China (Nos. 51227804, 51522510 and 51405477), the “Top Hundred Talents” Program of Chinese Academy of Sciences and the National Key Basic Research and Development (973) Program of China (No. 2013CB632300) for financial support. The authors thank Prof Jingcheng Hao, Shandong University, for providing access to the software.

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