PSI - Issue 50

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000

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ScienceDirect

Procedia Structural Integrity 50 (2023) 294–298

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers Abstract The paper presents the results of research on the development of polymer composite materials based on polytetrafluoroethylene and basalt or carbon fibers. It has been established that when these fibers are introduced into the polymer, the strength properties of the composites under compression and tension increase in comparison with the initial polymer. As the concentration of fibers in the matrix increases, an increase in the wear resistance of composites up to 41 times is observed observed according to the "finger-disk" friction scheme at a sliding speed of 0.2 m/s and under a load of 160 N. Using scanning electron microscopy, it was found that the structure of the polymer noticeably changes after the addition of fibers of various nature. Photomicrographs of the friction surfaces of composites show that fibers protrude from worn surfaces that protect the polymer from abrasion. © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers Keywords: fluoroplastic, polytetrafluoroethylene, polymer composite, basalt, carbon, fibers 1. Introduction Due to the intensive pace of development of the Arctic regions, the need to create polymer composite materials (PCM) that ensure reliable and high operation of equipment in extreme climatic conditions becomes an urgent task. The replacement of traditional parts with PCM is due to their high wear, aggressive and frost resistance combined 16th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures (MRDMS 2022) Study of the influence of reinforcing fillers of different nature on the properties and structure of polytetrafluoroethylene A.A. Ushkanov*, A.A. Okhlopkova, A.P. Ammosova North-Eastern Federal University, 58 Belinskogo St., Yakutsk, 677000, Russia Abstract The paper presents the results of research on the development of polymer composite materials based on polytetrafluoroethylene and basalt or carbon fibers. It has been established that when these fibers are introduced into the polymer, the strength properties of the composites under compression and tension increase in comparison with the initial polymer. As the concentration of fibers in the matrix increases, an increase in the wear resistance of composites up to 41 times is observed observed according to the "finger-disk" friction scheme at a sliding speed of 0.2 m/s and under a load of 160 N. Using scanning electron microscopy, it was found that the structure of the polymer noticeably changes after the addition of fibers of various nature. Photomicrographs of the friction surfaces of composites show that fibers protrude from worn surfaces that protect the polymer from abrasion. © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers Keywords: fluoroplastic, polytetrafluoroethylene, polymer composite, basalt, carbon, fibers 1. Introduction Due to the intensive pace of development of the Arctic regions, the need to create polymer composite materials (PCM) that ensure reliable and high operation of equipment in extreme climatic conditions becomes an urgent task. The replacement of traditional parts with PCM is due to their high wear, aggressive and frost resistance combined 16th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures (MRDMS 2022) Study of the influence of reinforcing fillers of different nature on the properties and structure of polytetrafluoroethylene A.A. Ushkanov*, A.A. Okhlopkova, A.P. Ammosova North-Eastern Federal University, 58 Belinskogo St., Yakutsk, 677000, Russia

* Corresponding author. Tel.: +7-924-469-2567. E-mail address: alexanderushkanov@mail.ru * Corresponding author. Tel.: +7-924-469-2567. E-mail address: alexanderushkanov@mail.ru

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures.

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers 10.1016/j.prostr.2023.10.053