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Citation: DUAN Tian-Bao, LU Pei-Zhong, QU Li, ZHANG Fu-Te, YE Wen-Yu. Tribological Properties of Keggin Siliconmolybdate Nanoparticles Modified with 2-Octathio-5-mercapto-1,3,4-thiadiazole Ag(Ⅰ)[J]. Chinese Journal of Applied Chemistry, ;2007, 24(11): 1299-1303. shu

Tribological Properties of Keggin Siliconmolybdate Nanoparticles Modified with 2-Octathio-5-mercapto-1,3,4-thiadiazole Ag(Ⅰ)

1.
Institute of Fine Chemistry and Engineering, Henan University, Kaifeng 475001

Corresponding author: YE Wen-Yu,
Received Date: 4 December 2006
Available Online: 20 March 2007
Fund Project: 河南省科技攻关资助项目(0424270066) (0424270066)

The heteropoly siliconmolybdate nanoparticles modified with 2-octathio-5-mercapto-1,3,4-thiodiazole Ag(Ⅰ) were prepared in a solution of water-ethanol. The shape, composition and structure of the nanoparticles were characterized by means of transmission electron microscope(TEM), scanning electron microscope(SEM), Fourier transform infrared spectrometer(FT-IR) and thermal analyzer(TG-DTA). In addition, the tribological properties were investigated with a four-ball tribometer. The result shows that the nanoparticles obtained disperse in organic solvents very well. They also have a Keggin structure with the mean graininess diameter about 20 nm. The decomposition temperature is between 220~370℃. As a new-type lube additive, when the load is 300 N, the reaction time is 30 min and the rotation speed is 1 450 r/min, the best additive mass fraction is 0.05%, with the tribological spot decreased by 43.4% and the friction coefficient decreased by 23.6%.
- octathio-mercapto-thiadiazole,
- Keggin structure,
- nanoparticle,
- tribological property,
- siliconmolybdate
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