Thermodynamic limit of surface layers of polymer linings in friction interaction


  • Дмитрий Юрьевич Журавлев Ivano-Frankivsk National Technical University of Oil and Gas 15 Karpatska Str., Ivano-Frankivsk, Ukraine, 76000, Ukraine



surface layer, electrons and ions (particles), thermodynamic limit, statistical mechanics


As the analyses of scientific studies showed, thermodynamic processes occur in the surface layers of metal-polymer friction pairs of drawworks band-shoe brake in their friction interaction. During electrothermomechanical friction of friction linings and brake pulley, the latter stores energy, its surfaces undergo forced cooling, and linings, which are placed on the band, are exposed to the physicochemical transformation. Therefore, there is a need to study the behavior of surface and subsurface layers of polymer linings in different thermodynamic states since lining is an element of friction pairs and affects the drawworks band-shoe brake friction unit efficiency. Statistical mechanics, applied to the surface layer of polymer lining and patterns of changing the studied parameters in evaluating the thermodynamic limit are first considered in the paper. Adding more and more particles (ions and electrons) causes, respectively, changes in the volume and, thus, the average environment of any particle gradually becomes virtually unchanged. The results of experimental studies of the first-order phase transition, conducted in stand conditions have shown that, at the temperature increase on the friction surfaces of friction pairs from the set, there are current fluctuations, which will continue to exist at the temperature increase, which adversely affects the friction units performance. The research results are important since they answer the questions: what processes occur in friction pairs, what leads to their rapid deterioration, and consequently failure of the drawworks band-shoe brake friction unit.

Author Biography

Дмитрий Юрьевич Журавлев, Ivano-Frankivsk National Technical University of Oil and Gas 15 Karpatska Str., Ivano-Frankivsk, Ukraine, 76000

Candidate of Technical Sciences, Associate Professor
Department of Mechanical Engineering


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How to Cite

Журавлев, Д. Ю. (2014). Thermodynamic limit of surface layers of polymer linings in friction interaction. Eastern-European Journal of Enterprise Technologies, 2(11(68), 20–26.



Materials Science