Development of ecologically safe lubricants with multifunctional additives
UDC
621.89.017Abstract
Organic additives for lubricants can intensify processes of decomposition and oxidation of the molecules of the lubricantsduring friction. These reactions often lead to formation of ecologically dangerous compounds and degradation of performance characteristics of a lubricant. The solution of ecological problems in the field of lubrication can be use of compatible with the base of lubricants inorganic compounds as additives. The data about application of lithium and sodiumphosphotungstates as multifunctional additives for Puma and Buksol railway grease arecited. Restructuringof lithium and sodiumphosphotungstatescyclic molecules to linear ones during friction are determined, these linear formsare more easily incorporated into the structure of surface oxide layer.Tribological tests have shown increasing antiwear properties, critical and seizure load for lubricant with phosphotungstate additives.Surface study of tribocoupling by FTIR spectroscopy has shown that in the presence of phosphotungstate lubricating film is preserved longer than in case origin lubricant. Presumably, it is caused by formation of secondary polymeric structures strongly fixed on sliding surface, which can include fragments of phosphotungstate network and molecules of lubricant.The ecological safety and biodegradation of the offered additives is proved.
Keywords:
multifunctional additives, phosphortungstates, structure of compounds, mechanism of lubrication, tribological properties, ecological safetyAcknowledgement
References
- Kolesnikov V.I., Migal Yu.F., Savenkova M.A., Solodovnikova D.N. Fosforovol'framat litiya - effektivnaya prisadka k plastichnym smazkam dlya tyazhelonagruzhennykh tribosopryazhenii [Lithium phosphotungstate - effective additive for greases using in heavily loaded tribocouples]. Tribologia i nadezhnost': sb. nauch. trudov XI Mezhdynar. konf. [Tribology and reliability: proc. of the XI international conf.], St. Petersburg, Petersburg state transport university, 2011, pp. 148-150. (In Russian)
- Kolesnikov V.I., Savenkova M.A., Migal Yu.F., Solodovnikova D.N. Fosforovol'framaty odnovalentnikh metallov - antifriktsyonnye prisadki dlya smazochnykh materialov [Monovalent metals phosphotungstates - antifriction additives for lubricants]. Polikomtrib-2011: Tezisy dokladov mezhdunar. nauch.-tehn. konf. [Polycomtrib-2011: abstracts of the international scientific and technical conf.], Gomel, IMMS NANB, 2011, p. 116. (In Russian)
- Migal Yu.F., Savenkova M.A., Solodovnikova D.N. Neorganicheskye polimernye prisadki k plastichnym smazochnym materialam [Inorganic polymeric additives for greases]. Konf. "Mekhanika i tribologia transportnykh sistem": sbornik dokladov [Mechanics and tribology of transport systems: abstracts], Rostov-on-Don, Rostov state transport university, 2011, pp. 304-305. (In Russian)
- Kolesnikov V.I., Savenkova M.A., Solodovnikova D.N., Avilov V.V., Migal Yu.F. Modifitsirovannye prisadkami polifosfatov smazochnye kompozitsii Puma i Buksol [Lubricating composition modified by polyphosphate additives]. Trenie i smazka v mashinakh i mekhanizmakh [Friction and lubrication in machines and mechanisms], 2013, no. 2, pp. 3-7. (In Russian)
- Kolesnikov V.I., Migal Yu.F., Savenkova M.A., Solodovnikova D.N. Vzaimodeistvie molekul fosforsoderzhashchikh neorganicheskikh prisadok s poverkhnost'yu zheleza: kvantovo-khimicheskii analiz [Interaction of molecules phosphorus-containing inorganic additives with an iron surface: quantum-chemical analysis]. Vestnik RGUPS [Vestnik of RSTU], 2013, no. 3, pp. 153-160. (In Russian)
- Corbridge D.E.C. The Structural Chemistry of Phosphorus. Amsterdam, Elsevier, 1984, 394 p.
- Filov V.A. (Ed.) Vrednye khimicheskie veshchestva. Neorganicheskie soedineniya elementov V-VIII gr. [Harmful chemicals. Inorganic compounds of elements of the V-VIII groups]. Leningrad, Khimiya Publ., 1989, 592 p. (In Russian)
- Korbridzh D. Fosfor. Osnovy khimii, biokhimii, tekhnologii [Phosphorus. Fundamentals of chemistry, biochemistry and technology]. Moscow, Mir Publ., 1988, 680 p. (In Russian)
- Prodan E.A., Prodan L.I., Ermolenko N.F. Tripolifosfaty I ikh primenenie [Tripolyphosphates and its applications]. Minsk, Nauka I tekhnika Publ., 1989, 536 p. (In Russian)
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Copyright (c) 2014 Kolesnikov V.I., Migal Yu.F., Solodovnikova D.N., Savenkova M.A., Myasnikova N.A.
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