Synthesis and properties of urea greases based on aminoamides of plant oil phosphatides

Authors

  • Oleksii Papeikin V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine Murmanska str., 1, Kyiv, Ukraine, 02094, Ukraine https://orcid.org/0000-0002-7939-0237
  • Oleg Safronov V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine Murmanska str., 1, Kyiv, Ukraine, 02094, Ukraine https://orcid.org/0000-0001-9793-0965
  • Larysa Bodachivska V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine Murmanska str., 1, Kyiv, Ukraine, 02094, Ukraine https://orcid.org/0000-0001-9575-6641
  • Irina Venger V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine Murmanska str., 1, Kyiv, Ukraine, 02094, Ukraine https://orcid.org/0000-0003-3424-0451

DOI:

https://doi.org/10.15587/1729-4061.2020.210043

Keywords:

phosphatide concentrate, amidation, urea grease, high-temperature properties, tribological characteristics, biodegradation

Abstract

The possibility of using the wastes of the oil and fat industry – phosphatide concentrates as components of lubricating materials was demonstrated in this paper. At the first stage, amidation of phosphatide concentrate from the purification of rapeseed oil by ethylene diamine was carried out using two procedures: without a catalyst and with the use of reagent-catalyst CaO.

The samples of urea greases were subsequently synthesized by interaction of amidated phosphatide concentrates with polyisocyanate in the oil media. Aminoamides of fatty acids with polyisocyanate form urea dispersion phase of thixotropic systems, and glycerolphosphatides and calcium glycerolrophosphatides perform the function of tribological additives. The method of infrared spectroscopy proved that the full interaction between polyisocyanate and amidated phosphatide concentrate takes place at the molar ratio of 1:3.

Physicochemical properties of the developed urea greases were studied and comparative analysis of their quality indicators with the Maspol brand lubricant was performed. The synthesized urea greases are characterized by high mechanical (a change in penetrations after moving of 100,000 double cycles of 42–45 mm·10-1), colloidal stability (5.2–5.6 % of extracted oil) and high-temperature properties (dropping point above 230 °C). In addition, these thixotropic systems are resistant to oxidation, do not cause corrosion of non-ferrous metals, and are able to operate in contact with water. Phosphorous residues improve the lubricating properties of synthesized compositions without any additional introduction of tribological modifiers (critical load is 980–1,039 N, welding load – 1,568–1,744 N). Due to the use of raw materials of plant origin in the composition of lubricating compositions, their biodegradation is enhanced by 6–7 %

Author Biographies

Oleksii Papeikin, V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine Murmanska str., 1, Kyiv, Ukraine, 02094

PhD

Department No. 10 Catalytic Synthesis

Oleg Safronov, V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine Murmanska str., 1, Kyiv, Ukraine, 02094

Engineer of І Category

Department No. 10 Catalytic Synthesis

Larysa Bodachivska, V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine Murmanska str., 1, Kyiv, Ukraine, 02094

PhD

Department No. 10 Catalytic Synthesis

Irina Venger, V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine Murmanska str., 1, Kyiv, Ukraine, 02094

Researcher

Department No. 10 Catalytic Synthesis

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Published

2020-08-31

How to Cite

Papeikin, O., Safronov, O., Bodachivska, L., & Venger, I. (2020). Synthesis and properties of urea greases based on aminoamides of plant oil phosphatides. Eastern-European Journal of Enterprise Technologies, 4(6 (106), 54–60. https://doi.org/10.15587/1729-4061.2020.210043

Issue

Vol. 4 No. 6 (106) (2020): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2020 Oleksii Papeikin, Oleg Safronov, Larysa Bodachivska, Irina Venger

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