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Citation: XU Yu-Fu, HU Xian-Guo, HU Kun-Hong, WANG Cheng-Gang, WANG Qiong-Jie. Catalyzed Synthesis and Tribological Behavior of Sulfurized Rapeseed Oil[J]. Chinese Journal of Applied Chemistry, ;2008, 25(11): 1306-1310. shu

Catalyzed Synthesis and Tribological Behavior of Sulfurized Rapeseed Oil

1.
Institute of Tribology, Hefei University of Technology, Hefei 230009

Corresponding author: XU Yu-Fu,
Received Date: 18 October 2007
Available Online: 25 January 2008
Fund Project: 国家科技支撑计划项目(2007BAD34B03) (2007BAD34B03)合肥工业大学科学研究发展基金项目(080204F) (080204F)合肥工业大学创新基金项目(XS07010) (XS07010)

Sulfurized rapeseed oil was synthesized via the reaction of refined rapeseed oil and sulfur in the presence of natural mordenite as a catalyst.The chemical structures of the products were analyzed by FTIR.The tribological performance of the sulfurized rapeseed oil was examined on a four-ball tribometer,and the lubrication mechanism was discussed by means of micrographs of wear scars and XPS.It was shown that the unsaturation degree decreased with increasing sulfur content.The reaction yield could exceed 98% in the presence of natural mordenite.The tribological performance of the rapeseed oil was improved with the sulfur content increased from zero to 9.96%.The friction coefficient decreased from 0.085 to 0.025,the wear scar diameter decreased from 0.56 mm to 0.42 mm,the maximum non-seizure load(P_B value) increased from 549 N to 745 N,and the welding load(P_D value) increased from 1 960 N to 2 254 N.The lubrication mechanism was ascribed to a lubrication film formed by the adsorption of the polar chain molecules and the tribological chemistry reaction of active sulfur element on the friction surface.
- rapeseed oil,
- sulfur,
- catalyze,
- synthesis,
- tribological performance
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