Tribological Properties of Surface-Modified MoS2 Hollow Spheres in Base Oil 500 SN
The extreme-pressure (EP) properties and anti-wear (AW) and friction-reducing characteristics of the solvothermally prepared mono-dispersed MoS2 nano-sized hollow spheres (NH-MoS2) with diameter of 200～300 nm modified by extractant Cyanex301 (bis(2,4,4-trimethylpentyl) dithiophosphinic acid) as an additive in base oil 500 SN (oil) were studied and compared with those of the commercial colloidal MoS2 (CC-MoS2) on a four-ball tester and an Optimol SRV oscillating friction and wear tester. The worn surfaces of the scars were observed and examined by means of scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS), respectively. Results showed that Cyanex 301 has good surface modification effect on NH-MoS2, which could improve the EP and AW and friction-reducing properties of the base stock effectively. NH-MoS2 was a much better EP additive and AW and friction-reducing additive in base oil 500 SN than CC-MoS2. The action mechanism under the boundary lubricating conditions was also studied. Other potential applications besides tribological field for MoS2 nanomaterials were investigated as well and the developing trend of molydenum industry products in China was briefly discussed simultaneously.
Cyanex 301 MoS2 nano-sized hollow spheres Base oil 500 SN Friction and wear behavior Lubricating oil additive
周晓东 石华强 蔺玉胜 傅洵 焦奎
青岛科技大学化学与分子工程学院,山东青岛,266042
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）