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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2018-62-2-236-243</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-513</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>ТЕХНИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TECHNICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>ЭФФЕКТ ПОВЫШЕНИЯ АДСОРБЦИОННОЙ АКТИВНОСТИ ХОЛЕСТЕРИЧЕСКИХ ЖИДКОКРИСТАЛЛИЧЕСКИХ СОЕДИНЕНИЙ В ПРОЦЕССЕ ТРЕНИЯ ТВЕРДЫХ ТЕЛ</article-title><trans-title-group xml:lang="en"><trans-title>EFFECT OF INCREASING THE ADSORPTIVE ACTIVITY OF CHOLESTERIC LIQUID-CRYSTAL COMPOUNDS IN THE FRICTION OF SOLID BODIES</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ермаков</surname><given-names>С. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Ermakov</surname><given-names>S. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р техн. наук, профессор, заведующий лабораторией</p></bio><bio xml:lang="en"><p>D. Sc. (Engineering), Professor, Head of the Laboratory</p></bio><email xlink:type="simple">erm-s@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт механики металлополимерных систем имени В. А. Белого Национальной академии наук Беларуси, Гомель</institution></aff><aff xml:lang="en"><institution>V. A. Belyi Metal-Polimer Research Institute of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>20</day><month>05</month><year>2018</year></pub-date><volume>62</volume><issue>2</issue><fpage>236</fpage><lpage>243</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ермаков С.Ф., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Ермаков С.Ф.</copyright-holder><copyright-holder xml:lang="en">Ermakov S.F.</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://doklady.belnauka.by/jour/article/view/513">https://doklady.belnauka.by/jour/article/view/513</self-uri><abstract><p>Установлено, что при статическом контакте твердых тел с жидкими смазочными материалами, содержащими поверхностно-активные вещества и холестерические жидкокристаллические соединения, закономерности их адсорбции зависят от природы и химического состава адсорбента. При длительном контактировании порошков меди, стали и стекла с растворами олеиновой кислоты в вазелиновом масле концентрация присадки уменьшается, а в случае растворов жидкокристаллических соединений холестерического типа их концентрация в масле увеличивается. При динамическом контакте металлов (пара трения сталь-сталь) адсорбционные процессы с участием растворов жидкокристаллических соединений протекают по иным механизмам. Обнаружено увеличение адсорбционной активности холестерических жидкокристаллических соединений при трении твердых тел. Установлено, что изменение концентрации жидкокристаллической присадки в отработанном масле за счет трибоактивируемой адсорбции в процессе динамического контакта коррелирует со снижением и последующей стабилизацией коэффициента трения пары сталь-сталь.</p></abstract><trans-abstract xml:lang="en"><p>It is found that, when solid bodies are in static contact with liquid lubricants containing surfactants and cholesteric liquid-crystal compounds, the behavior of their adsorption depends on the adsorbent nature and chemical composition. When copper, steel and glass powders are in long contact with oleic acid solutions in Vaseline oil, the additive concentration decreases, and in the case of solutions of cholesteric liquid–crystal compounds, their concentration in oil increases. When metals (friction pair steel–steel) are in dynamic contact, adsorption processes involving solutions of liquid crystal compounds occur by other mechanisms. The increase in the adsorption activity of cholesteric liquid-crystal compounds in the friction of solids is established. It is found that changing the concentration of liquid-crystal additives in the used oil due to the adsorption tribo-activity in the process of dynamic contact correlates with a decrease and a subsequent stabilization of the friction coefficient of the steel–steel pair.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>холестерические жидкокристаллические соединения</kwd><kwd>адсорбционная активность</kwd><kwd>статический контакт</kwd><kwd>динамический контакт</kwd><kwd>поверхности трения</kwd><kwd>смазочные материалы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cholesteric liquid-crystal compounds</kwd><kwd>adsorption activity</kwd><kwd>static contact dynamic contact</kwd><kwd>friction surface</kwd><kwd>lubricants</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Белорусского республиканского фонда фундаментальных исследований (проект Т18Р-072)</funding-statement><funding-statement xml:lang="en">The work is supported by Belarusian Republican Foundation for Fundamental Research (project no. 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