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Influence of Competitive Adsorption on Lubricating Property of Phosphonate Ionic Liquid Additives in PEG

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Abstract

Three phosphonate ionic liquids (1-butyl-3-methylimidazolium O-butyl phosphonate, N,N-dibutylammonium O-butyl phosphonate and N,N-dibutylammonium O-ethyl phosphonate) are used as additives in PEG for steel/steel contact. Moreover, the tribological performances and lubrication mechanism were studied. Results show that these ionic liquids can improve the tribological performances of the base oil significantly. The main factor that influences the tribological performances of the phosphonate ionic liquids/PEG blends is the competitive adsorption between the base oils and the additives. In addition, chemical reactions between the ionic liquids and the metal substrate are responsible for the excellent tribological performances of the phosphonate ionic liquids/PEG blends.

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Acknowledgments

The authors are grateful for the financial support from the National Natural Science Foundation of China (51175492, 51405477).

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Authors and Affiliations

  1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China

    Yunyan Han, Dan Qiao, Yuexia Guo, Dapeng Feng & Lei Shi

  2. University of Chinese Academy of Sciences, Beijing, 100049, China

    Yunyan Han & Yuexia Guo

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  1. Yunyan Han
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  2. Dan Qiao
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  3. Yuexia Guo
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Correspondence to Dan Qiao or Dapeng Feng.

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Han, Y., Qiao, D., Guo, Y. et al. Influence of Competitive Adsorption on Lubricating Property of Phosphonate Ionic Liquid Additives in PEG. Tribol Lett 64, 22 (2016). https://doi.org/10.1007/s11249-016-0749-9

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