resarПриродные ресурсы Арктики и СубарктикиArctic and Subarctic Natural Resources2618-97122686-9683Академия наук Республики Саха (Якутия)10.31242/2618-9712-2022-27-4-618-630resar-83Research ArticleМатериаловедениеMaterials scienceВлияние дисульфида молибдена и углеродных волокон на свойства и структуру полимерных композиционных материалов на основе политетрафторэтиленаEffect of molybdenum disulphide and carbon fibers on the properties and structure of polymer composite materials based on polytetrafluoroethylenehttps://orcid.org/0000-0001-7699-533XВасильевА. П.VasilevA. P.

ВАСИЛЬЕВ Андрей Петрович, кандидат технических наук, старший научный сотрудник, Researcher ID: R-8924-2016

Институт естественных наук, 677000, г. Якутск, ул. Белинского, 58

VASILEV, Andrey Petrovich, Cand. Sci. (Engineering), Senior Researcher, Researcher ID: R-8924-2016

Institute of Natural Science, 58 Belinsky st., Yakutsk 677000

gtvap@mail.ruhttps://orcid.org/0000-0002-6469-1491СтручковаТ. С.StruchkovaT. S.

СТРУЧКОВА Татьяна Семеновна, кандидат технических наук, доцент, Researcher ID: E-5047-2014

Институт естественных наук, 677000, г. Якутск, ул. Белинского, 58

STRUCHKOVA, Tatyana Semenovna, Cand. Sci. (Engineering), Associate Professor, Researcher ID:E-5047-2014

Institute of Natural Science, 58 Belinsky st., Yakutsk 677000

sts_23@mail.ruhttps://orcid.org/0000-0001-5090-0793ЛазареваН. Н.LazarevaN. N.

ЛАЗАРЕВА Надежда Николаевна, кандидат технических наук, ведущий научный сотрудник, зав. лаб. Researcher ID:E-5063-014

Институт естественных наук, 677000, г. Якутск, ул. Белинского, 58

LAZAREVA, Nadezhda Nikolaevna, Cand. Sci. (Engineering), Leading Researcher, Head of the Laboratory, Researcher ID: E-5063-2014

Institute of Natural Science, 58 Belinsky st., Yakutsk 677000

lazareva-nadia92@mail.ruНикитинаА. В.NikitinaA. V.

НИКИТИНА Айгылаана Васильевна, студент

Институт естественных наук, 677000, г. Якутск, ул. Белинского, 58

NIKITINA, Aigylaana Vasilievna, Student

Institute of Natural Science, 58 Belinsky st., Yakutsk 677000

nikitina.aigylaana@mail.ruhttps://orcid.org/0000-0001-5148-2837АлексеевА. Г.AlekseevA. G.

АЛЕКСЕЕВ Алексей Гаврильевич, старший преподаватель, Researcher ID: E-8150-2014

Институт естественных наук, 677000, г. Якутск, ул. Белинского, 58

ALEKSEEV, Alexsey Gavrilievich, Senior Lecturer, Researcher ID: E-8150-2014

Institute of Natural Science, 58 Belinsky st., Yakutsk 677000

alexalekseev.z@gmail.comСеверо-Восточный федеральный университет им. М. К. АммосоваРоссияAmmosov North-Eastern Federal UniversityRussian Federation202209092022274618630Copyright © Васильев А.П., Стручкова Т.С., Лазарева Н.Н., Никитина А.В., Алексеев А.Г., 20222022Васильев А.П., Стручкова Т.С., Лазарева Н.Н., Никитина А.В., Алексеев А.Г.Vasilev A.P., Struchkova T.S., Lazareva N.N., Nikitina A.V., Alekseev A.G.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://resar.elpub.ru/jour/article/view/83

Полимерные композиционные материалы (ПКМ) на основе политетрафторэтилена (ПТФЭ) представляют большой интерес из-за термической стабильности, высокой химической, коррозионной стойкости и отличных антифрикционных свойств. В работе приведены результаты исследования влияния углеродных волокон (УВ) совместно с дисульфидом молибдена (MoS2) с ультразвуковой обработкой на физико-механические и триботехнические свойства, а также на структуру ПТФЭ. Полимерные композиционные материалы получены по известной технологии переработки ПТФЭ: метод холодного прессования и спекания. Выявлено, что ультразвуковая обработка MoS2 – более эффективный способ активации наполнителя по сравнению с механоактивацией. Результаты физико-механических исследований показали, что прочностные свойства при растяжении ПКМ остаются на уровне ненаполненного ПТФЭ, напряжение при сжатии увеличилось на 75 %, а твердость повысилась на 48 % по сравнению с исходным полимером. Структурными исследованиями показано достаточно равномерное распределение волокон в объеме полимера и изотропное армирование материала. Степень кристалличности ПКМ повысилась на 9–11 % относительно исходного полимера. Разработанные композиционные материалы характеризуются низкой скоростью массового изнашивания композитов и низким значением коэффициента трения. Микроскопическими исследованиями поверхности трения ПКМ выявлено, что УВ и MoS2 локализуются на поверхности трения и защищают материал от изнашивания. Разработанные материалы могут быть предложены в качестве деталей в узлах трения, где ограничено применение смазочных масел или его использование недопустимо.

Polymer composite materials (PCM) based on polytetrafluoroethylene (PTFE) are of great research interest due to their thermal stability, high chemical and corrosion resistance and excellent anti-friction properties. This paper presents the results of a study on the effect of carbon fibers (CF) along with molybdenum disulfide (MoS2) with ultrasonic treatment on the mechanical and tribological properties, as well as on the structure of PTFE. Polymer composite materials were obtained according to the well-known technology for processing PTFE: the method of cold pressing and sintering. We found that ultrasonic treatment of MoS2 is a more effective way to activate the filler compared to mechanical activation. Based on the results of physical and mechanical studies, we demonstrated that the tensile strength properties of PCM remained at the level of unfilled PTFE, the compressive stress increased by 75 %, and the hardness increased by 48 % compared to the original polymer. Structural studies have shown a fairly uniform distribution of fibers in the bulk of the polymer and isotropic reinforcement of the material. The degree of crystallinity of PCM increased by 9–11 % relative to the initial polymer. The developed composite materials are characterized by a low mass wear rate of composites by 1100 times and a low value of the friction coefficient. Microscopic studies of the friction surface of PCM revealed that hydrocarbons and MoS2 are localized on the friction surface and protect the material from wear. The developed materials can be offered as parts in friction units, where the use of lubricating oils is limited or its use is unacceptable.

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