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| Preparation and Tribological Performance of Complex of β-Cyclodextrin and Oleic Acid |
| GUAN Jiju1 XU Xuefeng1** HE Rongjun2 HUANG Yishen1 PENG Wei1 |
1. Key Laboratory of Special Purpose Equipment and Advanced Processing Technology (Zhejiang University of Technology), Ministry of Education Zhejiang Province, Hangzhou 310014
2. College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310014 |
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Cite this article:
GUAN Jiju XU Xuefeng** HE Rongjun HUANG Yishen PENG Wei. Preparation and Tribological Performance of Complex of β-Cyclodextrin and Oleic Acid. Chinese Journal of Materials Research, 2013, 27(1): 85-90.
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Abstract ABSTRACT The complex of β-cyclodextrin (β-CD) and oleic acid was prepared as a kind of lubricant additive. The effects of testing load, friction time and additive content on tribological performance were investigated using four ball testing methods, and the lubrication mechanism of the complex was analyzed. The results showed that the friction coefficient of lubricant of complex continuously reduced with the increasing of time under the load of 196 N, 294 N and 392 N. The anti-wear property of complex was better than that of β-CD and oleic acid for different additive content. When the content was 0.9%, lubricant of complex had the best friction-reducing ability. The host β-CD molecules of complex were decomposed and guest oleic acid molecules were released during friction process. The carboxylic acid soap film formed by oleic acid played a major role in lubrication, and the alcohol chemisorption film and carbon deposition film formed by the fragments of β-CD played auxiliary and promoting role. They formed a composite lubricating film, which had better tribological performance under certain conditions.
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