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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">kaz44</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Университета Шакарима. Серия технические науки</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Shakarim University. Technical Sciences</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2788-7995</issn><issn pub-type="epub">3006-0524</issn><publisher><publisher-name>«Шәкәрім университеті» КеАҚ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.53360/2788-7995-2025-4(20)-73</article-id><article-id custom-type="elpub" pub-id-type="custom">kaz44-2185</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>ХИМИЧЕСКАЯ ТЕХНОЛОГИЯ (ОРИГИНАЛЬНАЯ СТАТЬЯ)</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CHEMICAL TECHNOLOGY (ORIGINAL ARTICLE)</subject></subj-group></article-categories><title-group><article-title>ИЗУЧЕНИЕ ТЕРМОДЕСТРУКЦИИ РОТАЦИОННЫХ КОМПОЗИТОВ В ПРОЦЕССЕ РЕЦИКЛИНГА ПУТЕМ ИССЛЕДОВАНИЯ ГИДРОФОБНОСТИ ИХ ПОВЕРХНОСТЕЙ</article-title><trans-title-group xml:lang="en"><trans-title>STUDY OF THE EFFECT OF TECHNOLOGICAL PARAMETERS OF ROTARY MOLDING ON THE WETTING EDGE ANGLE</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1736-0323</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тюканько</surname><given-names>В. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Tyukanko</surname><given-names>V. Y.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виталий Юрьевич Тюканько – кандидат технических наук, PhD химии, доцент кафедры «Химия и химические технологии»</p><p>150000, Казахстан, Петропавловск, ул. Абая,18 </p></bio><bio xml:lang="en"><p>Vitaliy Tyukanko – Candidate of Technical Sciences, PhD in Chemistry, Associate Professor of the Department of Chemistry and Chemical Technologies </p><p>150000, Petropavlovsk, Kazakhstan, Abaya str 18</p></bio><email xlink:type="simple">vetal3333@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-5221-0663</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тарунин</surname><given-names>Р. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tarunin</surname><given-names>R. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Роман Андреевич Тарунин – докторант, преподаватель кафедры «Химия и химические технологии» </p><p>150000, Казахстан, Петропавловск, ул. Абая,18 </p></bio><bio xml:lang="en"><p>Roman Tarunin – PhD student, Lecturer of the Department of Chemistry and Chemical Technologies</p><p>150000, Petropavlovsk, Kazakhstan, Abaya str 18</p></bio><email xlink:type="simple">ratarunin@ku.edu.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-6944-746X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Воропаева</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Voropaeva</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вера Андреевна Воропаева – магистр технических наук кафедры «Химия и химические технологии» </p><p>150000, Казахстан, Петропавловск, ул. Абая,18 </p></bio><bio xml:lang="en"><p>Vera Voropaeva – Master of Engineering Sciences, graduate of the Department of Chemistry and Chemical Technologies</p><p>150000, Petropavlovsk, Kazakhstan, Abaya str 18</p></bio><email xlink:type="simple">vera0805023@inbox.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-2104-0551</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алпысов</surname><given-names>Р. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Alpysov</surname><given-names>R. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Рустам Русланович Алпысов – магистрант кафедры «Химия и химические технологии»</p><p>150000, Казахстан, Петропавловск, ул. Абая,18 </p><p> </p></bio><bio xml:lang="en"><p>Rustam Alpysov – Master's student of the Department of Chemistry and Chemical Technologies</p><p>150000, Petropavlovsk, Kazakhstan, Abaya str 18</p></bio><email xlink:type="simple">sparkggvpeasy27@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-0353-509X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Умарова</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Umarova</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Айнель Муратбековна Умарова – студент кафедры «Химия и химические технологии»</p><p>150000, Казахстан, Петропавловск, ул. Абая,18 </p></bio><bio xml:lang="en"><p>Ainel Umarova – Student of the Department of Chemistry and Chemical Technologies</p><p>150000, Petropavlovsk, Kazakhstan, Abaya str 18</p></bio><email xlink:type="simple">ainekau@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Северо-Казахстанский Университет имени Манаша Козыбаева<country>Казахстан</country></aff><aff xml:lang="en">M. Kozybayev North Kazakhstan University<country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>25</day><month>01</month><year>2026</year></pub-date><volume>1</volume><issue>4(20)</issue><fpage>624</fpage><lpage>634</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тюканько В.Ю., Тарунин Р.А., Воропаева В.А., Алпысов Р.Р., Умарова А.М., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Тюканько В.Ю., Тарунин Р.А., Воропаева В.А., Алпысов Р.Р., Умарова А.М.</copyright-holder><copyright-holder xml:lang="en">Tyukanko V.Y., Tarunin R.A., Voropaeva V.A., Alpysov R.R., Umarova A.M.</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://tech.vestnik.shakarim.kz/jour/article/view/2185">https://tech.vestnik.shakarim.kz/jour/article/view/2185</self-uri><abstract><p>В данной статье представлено исследование, посвященное изучению проблемы повторной утилизации полиэтилена (его вторичной переработки – рециклингу) методом ротационного формования. В научной литературе рециклинг ротационных марок полиэтилена (РПЭ) очень слабо изучен, а представленные данные часто противоречивы. Однако для производства емкостей, методом ротационного формования, с использование вторичного полиэтилена в промышленности необходимо учитывать его деградацию (проходящую в условиях рециклинга), для оценки которой авторы использовали методы: ИК-спектроскопию, атомно-силовую микроскопию, изучение гидрофобности поверхности РПЭ (путем замера краевого угла смачивания (КУС)) и механические испытания. Ввиду повсеместного использования данных емкостей (для хранения минерального удобрения, марки КАС28), изучали КУС РПЭ дистиллированной водой (после выдержки в среде КАС28) при различных технологических режимах их переработки (показатель PIAT). Показано, что рециклинг РПЭ приводит к образованию карбоксильных групп на поверхности полиэтилена и значительному росту его гидрофильности (КУС уменьшился до 36%). Выдержка в КАС28 так же увеличивает гидрофильность, изготовленных из вторичного и первичного РПЭ изделий (снижение краевого угла смачивания от 8% до 28%) независимо от рассматриваемых технологических параметров переработки. Показано, что наиболее влияющим фактором (из изученных) на гидрофильность РПЭ является – рециклинг. Установлено, что при дозировке до 15-25% вторичного полиэтилена в композитах наблюдаются лишь незначительные изменения прочностных характеристик (предела прочности и деформации), что позволяет рекомендовать частичное замещение первичного сырья без критических потерь в эксплуатационных свойствах (на вторичный полиэтилен). Это открывает перспективы для экономически целесообразного использования вторичного ПЭ в производстве ротационных композитов. Данное исследование может быть использовано для оценки деградации РПЭ в процессе его рециклинга и улучшения эксплуатационных свойств готовых изделий.</p></abstract><trans-abstract xml:lang="en"><p>This article presents a study of the problem of polyethylene re-utilization (its secondary processing – recycling) by rotational molding. In scientific literature, recycling of rotational grades of polyethylene (RPE) is very poorly studied, and the data presented are often contradictory. However, for the production of containers by rotational molding, using secondary polyethylene in industry, it is necessary to take into account its degradation (occurring under recycling conditions), for the assessment of which the authors used the following methods: IR spectroscopy, atomic force microscopy, study of the hydrophobicity of the RPE surface (by measuring the contact angle (CAA)) and mechanical tests. In view of the widespread use of these containers (for storing mineral fertilizer, grade KAS28), the CAA of RPE with distilled water (after exposure to KAS28) was studied under various technological modes of their processing (PIAT indicator). It is shown that recycling of RPE leads to the formation of carboxyl groups on the surface of polyethylene and a significant increase in its hydrophilicity (the contact angle decreased to 36%). Keeping KAS28 also increases the hydrophilicity of products made of secondary and primary RPE (reduction in the contact angle from 8% to 28%) regardless of the processing parameters considered. It is shown that the most influential factor (of those studied) on the hydrophilicity of RPE is recycling. It was found that at a dosage of up to 15-25% of secondary polyethylene in composites, only minor changes in the strength characteristics (tensile strength and deformation) are observed, which allows us to recommend partial substitution of primary raw materials without critical losses in performance properties (with secondary polyethylene). This opens prospects for the economically feasible use of secondary PE in the production of rotational composites. This study can be used to assess the degradation of RPE during its recycling and improve the performance properties of finished products.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ротационное формование</kwd><kwd>рециклинг</kwd><kwd>деградация</kwd><kwd>смачивание</kwd><kwd>полиэтилен</kwd></kwd-group><kwd-group xml:lang="en"><kwd>rotational molding</kwd><kwd>recycling</kwd><kwd>degradation</kwd><kwd>wetting</kwd><kwd>polyethylene</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Данное исследование финансируется Комитетом науки Министерства науки и высшего образования Республики Казахстан (грант AP26104785).</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">Revyako M.M. Chemical technologies, biotechnology, geoecology / M.M. Revyako, E.Z. Khrol // Journal Proceedings of BSTU. 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