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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">techusgu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Юго-Западного государственного университета. Серия: Техника и технологии</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Southwest State University. Series: Engineering and Technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-1528</issn><publisher><publisher-name>Юго-Западный государственный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21869/2223-1528-2025-15-2-149-158</article-id><article-id custom-type="elpub" pub-id-type="custom">techusgu-348</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>Экспериментальные исследования механических характеристик композиционных полимерных материалов на основе полипропилена, допированных углеродными нанотрубками</article-title><trans-title-group xml:lang="en"><trans-title>Experimental studies of the mechanical characteristics of composite polymer materials based on polypropylene doped with carbon nanotubes</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-1014-240X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Элбакян</surname><given-names>Л. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Elbakyan</surname><given-names>L. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Элбакян Лусине Самвеловна, кандидат физико-математических наук, доцент кафедры судебной экспертизы и физического материаловедения, Институт приоритетных технологий</p><p>пр-т Университетский, д. 100, г. Волгоград 400062</p></bio><bio xml:lang="en"><p>Lusine S. Elbakyan, Candidate of Sciences (Physics and Mathematics), Associate Professor of Forensic Examination and Physical Materials Science, Institute of Priority Technologies</p><p>100 Universitetsky Ave., Volgograd 400062 </p></bio><email xlink:type="simple">lusniak-e@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Волгоградский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Volgograd State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>08</day><month>08</month><year>2025</year></pub-date><volume>15</volume><issue>2</issue><fpage>149</fpage><lpage>158</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Элбакян Л.С., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Элбакян Л.С.</copyright-holder><copyright-holder xml:lang="en">Elbakyan L.S.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://techusgu.elpub.ru/jour/article/view/348">https://techusgu.elpub.ru/jour/article/view/348</self-uri><abstract><p>Цель исследования. В данной работе рассмотрены вопросы использования углеродных нанотрубок в качестве наполнителей с целью улучшения прочностных свойств полимерных материалов на основе полипропилена, используемых в различных областях промышленности, нефте- и газодобыче, металлургии, электроэнергетике и т.д.Методы. Разработан способ создания нового полимерного композитного материала на основе полипропилена с добавлением углеродных нанотрубок. Проведены экспериментальные испытания прочности опытных образцов, изготовленных из композита «полипропилен – углеродные нанотрубки» в соответствии с ГОСТ 25.601-80 «Расчеты и испытания на прочность».Результаты. В ходе экспериментальных исследований установлено, что ультразвуковое воздействие на углеродные нанотрубки с правильно подобранным растворителем и условиями воздействия является важным условием при использовании УНТ в качестве нанодобавки. Для получения композитного гранулированного полимерного материала путем введения углеродных нанотрубок целесообразнее всего использование двухшнекового экструдера с заранее подобранными температурными режимами в каждой зоне нагрева и скоростью вращения шнеков. Установлено, что введение углеродных нанотрубок в микроколичествах (0,2–0,4 мас. %) в полимерную матрицу приводит к увеличению максимально допустимой нагрузки до ~0,03–0,05кН, коэффициента пластической деформации ~2,2–7,1% и предела прочности при растяжении ~1–2,5 Н/мм2.Заключение. Полученные результаты позволяют сделать вывод о том, что использование углеродных нанотрубок в качестве нанодобавок в полимерную матрицу полипропилена позволяет создавать специальные полимеры, обладающие уникальными свойствами, без существенного удорожания их производства. Кроме того, контроль процентного содержания УНТ дает возможность проектирования материалов «под заказ» с точным контролем свойств.</p></abstract><trans-abstract xml:lang="en"><p>Research objective. This work considers the issues of using carbon nanotubes as fillers in order to improve the strength properties of polymer materials based on polypropylene, which are used in various industries, oil and gas production, metallurgy, electric power engineering, etc.Methods. A method for creating a new polymer composite material based on polypropylene with the addition of carbon nanotubes has been developed. Experimental tests of the strength of prototypes made of the "polypropylene-carbon nanotubes" composite were conducted in accordance with GOST 25.601-80 "Calculations and Tests for Strength".Results. In the course of experimental studies, it was found that ultrasonic exposure of carbon nanotubes with a properly selected solvent and exposure conditions is an important condition for using CNTs as a nano-additive. To obtain a composite granular polymer material by introducing carbon nanotubes, it is most advisable to use a twin-screw extruder with pre-selected temperature regimes in each heating zone and the speed of rotation of the screws. It has been established that the introduction of carbon nanotubes in microquantities (0.2–0.4 wt. %) into the polymer matrix leads to an increase in the maximum allowable load to ~0.03–0.05 kN, the plastic deformation coefficient ~2.2–7.1% and the tensile strength ~1–2.5 N/mm2.Conclusion. The results obtained allow us to conclude that the use of carbon nanotubes as nanoadditives in the polymer matrix of polypropylene allows us to create special polymers with unique properties without significantly increasing the cost of their production. In addition, the control of the percentage of CNTs allows us to design custom materials with precise control of their properties.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>углеродные нанотрубки</kwd><kwd>композиционные материалы</kwd><kwd>полипропилен</kwd><kwd>прочностные характеристики</kwd></kwd-group><kwd-group xml:lang="en"><kwd>carbon nanotubes</kwd><kwd>composite materials</kwd><kwd>polypropylene</kwd><kwd>strength characteristics</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания Министерства науки и высшего образования Российской Федерации (тема “FZUU-2023-0001”).</funding-statement><funding-statement xml:lang="en">The work was carried out as part of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (topic “FZUU-2023-0001”).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Ibrahim K.S. 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