vrgupВестник Ростовского государственного университета путей сообщенияVestnik Rostovskogo Gosudarstvennogo Universiteta Putej Soobshcheniya0201-727XРостовский государственный университет путей сообщения10.46973/0201-727X_2026_1_151vrgup-202Research ArticleМАШИНОСТРОЕНИЕMECHANICAL ENGINEERINGПовышение износостойкости эпоксидных композитов введением микрокапсулированных смазочных материалов и частиц оксида магнияEnhancement of wear resistance of epoxy composites by introduction of microencapsulated lubricants and magnesium oxide particlesАнанкоА. М.AnankoA. M.

Ананко Анатолий Михайлович, лаборатория функциональных покрытий, научно-испытательный центр «Нанотехнологии и трибосистемы» НИЧ, младший научный сотрудник

Ananko Anatoly Mikhailovich , Research Department Junior Researcher

nypotilitailla@mail.ruРостовский государственный университет путей сообщения (РГУПС)Rostov State Transport University (RSTU), Laboratory of Functional Coatings, Research and Testing Center “Nanotechnologies and Tribosystems”20263003202601151160Copyright © Ананко А.М., 20262026Ананко А.М.Ananko A.M.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestnik.rgups.ru/jour/article/view/202

Износ полимерных материалов в узлах трения транспортной техники определяет ресурс и надёжность подвижного состава. Цель работы – повышение износостойкости эпоксидных композитов на основе смолы ЭД-20 путём введения частиц оксида магния (MgO) и полиэфирных микрокапсул со смазочным наполнителем. Микрокапсулы размером 5–30 мкм синтезированы методом межфазной поликонденсации себацилхлорида с многоатомными спиртами. Физико-механические свойства определены индентированием (NanoTest 600), трибологические характеристики – на машине трения ИИ-5018 по схеме «вал – палец» при нагрузке 55 Н и пути трения 2200 м. Установлен оптимальный состав – ЭД-20 + 1 мас.% MgO + 1 мас.% микрокапсул А237 (масло И-40), обеспечивающий снижение интенсивности износа на 82 % (с 55,2 до 10,2 мг/м) и коэффициента трения с 0,40 до 0,23. Параметр пластичности H3/Er2 возрос на 15,9 %. Методами ИК-НПВО и СЭМ-ЭДС выявлен циклический механизм формирования композитного трибослоя из частиц MgO, фрагментов эпоксидной матрицы и смазочного масла. Результаты применимы для разработки самосмазывающихся полимерных материалов узлов трения рельсового транспорта.

The wear of polymer materials in friction units of transport equipment determines the service life and reliability of rolling stock. The aim of the work is to improve the wear resistance of epoxy composites based on ED-20 resin by introducing magnesium oxide (MgO) particles and polyester capsules with lubricating filler. Microcapsules with a size of 5–30 μm were synthesized by interfacial polycondensation of sebacoyl chloride with polyhydric alcohols. The physical and mechanical properties were determined by indentation (NanoTest 600), tribological characteristics were measured on the II-5018 friction machine according to the "shaftpin" scheme at a load of 55 N and a friction path of 2200 m. The optimal composition was established – ED-20 + 1 wt.% MgO + 1 wt.% microcapsules A237 (I-40 oil), providing a reduction in wear intensity by 82 % (from 55.2 to 10.2 mg/m) and a friction coefficient from 0.40 to 0.23. The plasticity parameter H3/Er2 increased by 15.9 %. The cyclic mechanism of formation of a composite tribolayer from MgO particles, fragments of the epoxy matrix and lubricating oil was revealed by ATR-FTIR and SEM-EDS methods. The results are applicable for the development of self-lubricating polymer materials for friction units of rail transport.

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The authors declare that there are no conflicts of interest present.