Preparation and Tribological Performance of Complex of β-cyclodextrin and Dibutyl Phosphite
Author(s): Li Zhongya, Huang Shuiquan, Guan Jiju, Xu Xuefeng
Pages: 56-60
Year: 2015 Issue: 8
Journal: Lubrication Engineering
Keyword: tribological properties; β-cyclodextrin; dibutyl phosphite; complex;
Abstract: The inclusion complex of β?cyclodextrin(β?CD)and dibutyl phosphite(T304)was prepared by trituration. The tribological properties of the complex with different concentrations were investigated by a four?ball tester in the solution of polyethylene glycol?600(PEG?600).The tribological test results show that the complex exhibits better friction reducing and anti?wear properties thanβ?CD under different loads,that is because that the complex is decomposed into various mo?lecular fragments and the T304 molecules are released under the friction condition.The tribo?system shows the least friction coefficient when the concentration of the complex is 0?9%. The XPS analytical results on the worn surfaces reveal that phosphide films formed by the released T304 play a major role and the iron alkoxide and carbon deposition films formed by the β?CD fragments have better friction reducing effect on the phosphide film surface.The interactions of different films re?sult in the formation of a mixed boundary lubrication film.
Pages: 56-60
Year: 2015 Issue: 8
Journal: Lubrication Engineering
Keyword: tribological properties; β-cyclodextrin; dibutyl phosphite; complex;
Abstract: The inclusion complex of β?cyclodextrin(β?CD)and dibutyl phosphite(T304)was prepared by trituration. The tribological properties of the complex with different concentrations were investigated by a four?ball tester in the solution of polyethylene glycol?600(PEG?600).The tribological test results show that the complex exhibits better friction reducing and anti?wear properties thanβ?CD under different loads,that is because that the complex is decomposed into various mo?lecular fragments and the T304 molecules are released under the friction condition.The tribo?system shows the least friction coefficient when the concentration of the complex is 0?9%. The XPS analytical results on the worn surfaces reveal that phosphide films formed by the released T304 play a major role and the iron alkoxide and carbon deposition films formed by the β?CD fragments have better friction reducing effect on the phosphide film surface.The interactions of different films re?sult in the formation of a mixed boundary lubrication film.
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