An oil-soluble additive organic molybdenum complex (MC) was synthesized. The antioxidation properties of a formulation including polyalphaolefin synthetic lubricant (PAO), the complex of p, p.-dioctyldiphenylamine (DODPA) and MC, were evaluated by a differential scanning calorimetry (DSC) test and oxidation-corrosion (OC) tests. DSC test measures the incipient oxidation temperature (IOT) and oxidation induction time (OIT) of the lubricant at high temperature and the oxidation stability of the oil including viscosity and total acid number increase are measured by OC test. In the first test, the IOT and OIT of the PAO containing DODPA were improved respectively after combining with MC. In the oxidation-corrosion test, in comparison to the base fluid, the additive hardly exhibited antioxidation properties, but the combination of MC with DODPA showed a reduction in viscosity Increase of about 32.4%. The Total acid number increase was 25.4% less than those of the lubricants containing DODPA. In the modified Penn State Micro-Oxidation Test (MPMOT), the combination of DODPA with MC can exhibits good deposit inhibition in PAO. These results indicate that MC shows good oxidative synergisms with DODPA antioxidant. In addition, the changes occurring to DODPA in the oxidation of the PAO with and without MC were followed by gas chromatography mass spectrometer (GC/MS) measurements. Finally, the antioxidation synergism of the formulation of MC with DODPA was proposed.
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STLE/ASME 2006 International Joint Tribology Conference
October 23–25, 2006
San Antonio, Texas, USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4259-2
PROCEEDINGS PAPER
Study on Synergistic Antioxidance Properties of Organic Molybdenum Complex With Arylamine Antioxidant
Jian-Qiang Hu,
Jian-Qiang Hu
Xuzhou Air Force College, Xuzhou, China
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Xian-Yong Wei,
Xian-Yong Wei
China University of Mining and Technology, Xuzhou, China
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Jun-Bing Yao
Jun-Bing Yao
Beijing Aviation Oil Research Institute, Beijing, China
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Jian-Qiang Hu
Xuzhou Air Force College, Xuzhou, China
Xian-Yong Wei
China University of Mining and Technology, Xuzhou, China
Yan Fu
Xuzhou Air Force College, Xuzhou, China
Jun-Bing Yao
Beijing Aviation Oil Research Institute, Beijing, China
Paper No:
IJTC2006-12021, pp. 63-70; 8 pages
Published Online:
October 2, 2008
Citation
Hu, J, Wei, X, Fu, Y, & Yao, J. "Study on Synergistic Antioxidance Properties of Organic Molybdenum Complex With Arylamine Antioxidant." Proceedings of the STLE/ASME 2006 International Joint Tribology Conference. Part A: Tribomaterials; Lubricants and Additives; Elastohydrodynamic Lubrication; Hydrodynamic Lubrication and Fluid Film Bearings; Rolling Element Bearings; Engine Tribology; Machine Components Tribology; Contact Mechanics. San Antonio, Texas, USA. October 23–25, 2006. pp. 63-70. ASME. https://doi.org/10.1115/IJTC2006-12021
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