Obtaining of polymethacrylate additives and studying of operational properties of an alloyed industrial oil

Authors

DOI:

https://doi.org/10.15587/1729-4061.2016.71235

Keywords:

lauryl methacrylate, methyl acrylate, kinetics, polymethacrylate additive, alloyed industrial lubricant I–20A, operational properties

Abstract

The study explored the influence of temperatures and the impact of concentrations of the initiator and the monomer on the kinetics of lauryl methacrylate homopolymerization in benzene. The reaction sequence with respect to the initiator (1.38±0.07), the monomer (1.69±0.02) and also the activation energy (Еа=96.4±0.506 kJ/mol) was determined according to the experimental points of the first fixed area in the polymerization process (S ≤ 10 %). The numerical values of the reaction order for this system were high due to the high structuring of the LMA and a high viscosity of the system. The optimal conditions for obtaining polymethacrylate additives were determined on the basis of kinetic studies and the following parameters: the temperature of 80 ± 1°C, the concentration of benzoyl peroxide of 0.5 wt.% based on the total monomers’ weight, the ratio of lauryl methacrylate : benzene = 1:1, and the reaction time of 3 to 4 hours. The qualitative composition of the additives was confirmed with the infrared spectrometry. According to a thermogravimetric analysis, it has been found that synthesized (co)polymers are thermally stable up to the temperatures of 255–265°C.

The influence of polymethacrylate additives in the oil I-20A on the rheological, depressor and antiwear properties was also studied. The viscosity curves for the obtained systems were described. The viscosity index of the obtained alloyed oil was determined according to the kinematic viscosity values at the temperatures of 50°C and 100°C. The depressor and antiwear properties of the lubricant were investigated at the optimal concentration of the additive in the amount of 2 wt.% in the oil. The operational properties of the industrial oil with an additive in the amount of 1.4 wt.% were also summarized in the study. The antiwear properties of the alloyed oil I–20A were tested in friction on a four ball machine. It has been found that the PMA20 additive with concentration of 2 wt.% in the oil can be used to obtain an alloyed industrial lubricant as a commodity with desirable operational properties (VI = 140 at TFr = –19°C).

The obtained lubricant can be used for friction reduction and wear protection of equipment elements of power plants.

Author Biographies

Yosyf Mysak, Lviv polytechnic National University Bandera str., 12, Lviv, Ukraine, 79013

Doctor of technical sciences, professor, head of the department

Department of Thermal Engineering and Thermal Power Stations

Tetiana Kovalenko, Lviv polytechnic National University Bandera str., 12, Lviv, Ukraine, 79013

Candidate of chemical science, Assistant

Department of Thermal Engineering and Thermal Power Stations

Vitalii Serdiuk, Lviv polytechnic National University Bandera str., 12, Lviv, Ukraine, 79013

Candidate of chemical science, Research Scientist

Department of Organic Chemistry

Taras Kravets, Lviv polytechnic National University Bandera str., 12, Lviv, Ukraine, 79013

PhD, Associate Professor

Department of Thermal Engineering and Thermal Power Stations

Marta Martynyak-Andrushko, Lviv polytechnic National University Bandera str., 12, Lviv, Ukraine, 79013

PhD, Assistant Professor

Department of Thermal Engineering and Thermal Power Stations

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Published

2016-06-26

How to Cite

Mysak, Y., Kovalenko, T., Serdiuk, V., Kravets, T., & Martynyak-Andrushko, M. (2016). Obtaining of polymethacrylate additives and studying of operational properties of an alloyed industrial oil. Eastern-European Journal of Enterprise Technologies, 3(6(81), 9–15. https://doi.org/10.15587/1729-4061.2016.71235

Issue

Vol. 3 No. 6(81) (2016): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2016 Yosyf Mysak, Tetiana Kovalenko, Vitalii Serdiuk, Taras Kravets, Marta Martynyak-Andrushko

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