Preparation and Action Mechanism of Inclusion Complex of β-cyclodextrin and Sulfurized Isobutylene as Additives in Solution of Polyethylene Glycol-600
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2015年第4期
论文作者：关集俱 许雪峰 HU Jiande PENG Wei
文章页码：859 - 867
摘 要：The inclusion complex of β-cyclodextrin（β-CD） and sulfurized isobutylene（T321） was prepared with a co-precipitation method. 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 experimental results suggest that the complex exhibits better anti-friction and anti-wear properties than β-CD under different load conditions. The tribo-system shows the least friction coefficient when the concentration of the complex is 0.8%. During the friction process, the complex was decomposed into various molecular fragments and the T321 molecules were released onto the friction interface to provide effective lubrication. The XPS analytical results on the worn surfaces reveal that sulfide film formed by the released T321 plays a major role, and the iron alkoxide and carbon deposition films formed by the β-CD fragments have better anti-friction effect on the sulfide film surface. The interactions of different films result in the formation of a mixed boundary lubrication film.
关集俱，许雪峰，HU Jiande，PENG Wei
Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education & Zhejiang Province,Zhejiang University of Technology
摘 要：The inclusion complex of β-cyclodextrin（β-CD） and sulfurized isobutylene（T321） was prepared with a co-precipitation method. 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 experimental results suggest that the complex exhibits better anti-friction and anti-wear properties than β-CD under different load conditions. The tribo-system shows the least friction coefficient when the concentration of the complex is 0.8%. During the friction process, the complex was decomposed into various molecular fragments and the T321 molecules were released onto the friction interface to provide effective lubrication. The XPS analytical results on the worn surfaces reveal that sulfide film formed by the released T321 plays a major role, and the iron alkoxide and carbon deposition films formed by the β-CD fragments have better anti-friction effect on the sulfide film surface. The interactions of different films result in the formation of a mixed boundary lubrication film.
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