Performance Comparison and Structure-Activity Relationship of Different Sulfurized Olefins [两种硫化烯烃的性能对比及其构效关系研究]

作者：Song X.; Hu W.; Zhang X.; Li J.^*

来源：Petroleum Processing and Petrochemicals, 2022, 53(12): 77-85.

• Copper corrosion
• Extreme pressure and anti-wear
• Structure analysis
• Structure-activity relationship
• Sulfurized olefin

Two sulfurized olefin lubricating additives(T321 and LZ5340) with different structures were selected to investigate their extreme pressure and anti-wear properties by using four-ball friction and wear testing machines, and their copper strip corrosion resistance were compared. The results showed that two sulfuried olefins could effectively reduce the friction coefficient and wear rate of the base oil, and significantly improve the extreme pressure performance of the oil. Among them, T321 is superior to LZ5340 in anti-friction, wear resistance and copper strip corrosion resistance, but its extreme pressure performance was slightly worse than that of LZ5340. The composition and structure of the additives were analyzed by infrared spectroscopy(IR), gas chromatography-mass spectrometry(GC-MS), element analyzer and nuclear magnetic resonance spectroscopy(NMR). It was found that the difference of components and active sulfur content had direct influence on the properties of sulfurized olefin. The structure-activity relationship of two sulfurized olefins with different structures was systematically investigated, which could provide guidance for the application of sulfurized olefin lubricating additives.

• 单位
  中国科学院大学