Abstract: In order to meet the requirements of high quality grease product for wind power system, a new heterocyclic derivative additive containing Sulfur (named as RHY317) was synthesized in laboratory. The tribological and anticorrosion properties of RHY317 used in 2# lithium complex grease were evaluated and compared with three other additives containing Sulfur. In addition, the application study of wind power grease containing RHY317 was carried out. Test results indicate that RHY317 exhibits excellent extreme pressure performance, good antiwear property and corrosion resistance in base grease; when it is used as main EP/AW additive for wind power grease, the quality of the product can fully satisfy the specifications.

Key words: heterocyclic derivative, EP/AW additive, wind power grease