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Preparation and tribological properties of chemically decorated MoS 2 nanosheets with oleic diethanolamide
Author(s) -
Wu PeiRong,
Li Wei,
Ge Ting,
Feng YuMei,
Liu Zan,
Cheng ZhiLin
Publication year - 2018
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.1444
Subject(s) - tribology , materials science , base oil , friction coefficient , base (topology) , oleic acid , chemical engineering , composite material , nanotechnology , chemistry , scanning electron microscope , mathematical analysis , biochemistry , mathematics , engineering
In this paper, we attempted to modify the self‐made two‐dimensional MoS 2 nanosheets by oleic diethanolamide (OD) with a simple one‐step route to obtain OD‐MoS 2 . The OD‐MoS 2 nanosheets were confirmed by a series of characterizations. The results showed that the MoS 2 nanosheets could be chemically covered with OD molecules to form CS bond, so as to distinctly improve the dispersibility and stability of OD‐MoS 2 nanosheets in base oil. Furthermore, the tribological properties of OD‐MoS 2 nanosheets in base oil were comprehensively studied by four‐ball tester. In detail, the average friction coefficient and average wear scar diameter of 0.08 wt.% OD‐MoS 2 ‐based oil were decreased by about 36.8% and 15.4% as compared with base oil, respectively, while its extreme pressure performance also was increased by about 15.2%. The results showed that OD‐MoS 2 nanosheets exhibited the better tribological properties in oil because of the solved dispersibility.