vguitВестник Воронежского государственного университета инженерных технологийProceedings of the Voronezh State University of Engineering Technologies2226-910X2310-1202VSUET10.20914/2310-1202-2026-1-vguit-3733Research ArticleХимическая технологияFundamental and Applied chemistry, chemical technologyДинамически вулканизованные термоэластопласты на основе ПВДФ и БНКС-40 АМНDynamically vulcanized thermoplastic elastomers based on PVDF and BNKS-40 AMNhttps://orcid.org/0000-0002-0592-796XЧерепановаВиктория АлексеевнаCherepanovaViktoria

Инженер центра компетенций "Полимерные материалы", выпускник кафедры химии и технологии переработки полимеров

Engineer, Competence Center "Polymer Materials", Vyatka State University

usr21806@vyatsu.ruВятский государственный университетРоссияVyatka State UniversityRussian Federation202601042026881233242Copyright © Черепанова В.А., 20262026Черепанова В.А.Cherepanova V.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.vestnik-vsuet.ru/vguit/article/view/3733

Термоэластопласты – это материалы, обладающие уникальной двухфазной структурой, характеризующиеся одновременно эластичностью каучука и перерабатываемостью термопластов. Сегодня особое значение приобретают термоэластопласты, полученные методом динамической вулканизации (ДТЭП), демонстрирующие высокие эксплуатационные характеристики. Целью данной работы стало создание динамически вулканизованных термоэластопластов на основе бутадиен-нитрильного каучука (БНКС-40АМН) и поливинилиденфторида (ПВДФ), содержащих перекисную вулканизующую систему, а также изучение влияния концентрации перекисной вулканизующей системы на структуру и свойства полученных материалов. Методами ИК-Фурье спектроскопии и дифференциальной сканирующей калориметрии изучена микроструктура полученных материалов. Показано, что увеличение степени вулканизации эластомерной фазы приводит к улучшению комплекса эксплуатационных характеристик: прочности при растяжении, относительного удлинения при разрыве, термостабильности и стойкости к агрессивным средам. Материалы демонстрируют отличную стойкость к воде, маслу и нефти и хорошую стойкость к бензину. Наилучшими характеристиками и целевой морфологией, при которой термопласт формирует сплошную матрицу, а сшитый эластомер диспергирован в ней в виде частиц, обладают образцы с содержанием вулканизующего агента 0,75 м.ч. Для данных образцов дополнительно определена стойкость к тепловому старению и способность к повторной переработке. Установлено, что изменение ключевых эксплуатационных характеристик после повторной переработки не превышает 10%. Полученные материалы соответствуют требованиям, предъявляемым к маслобензостойким композициям, и могут представлять интерес для использования в автомобилестроении, нефтяной и газовой промышленности, а использование для производства отечественного сырья (бутадиен-нитрильные каучуки производятся АО "СИБУР Холдинг" , а ПВДФ –  АО "ГалоПолимер") обеспечивает импортозамещающий потенциал разработки.

Thermoplastic elastomers (TPEs) are materials possessing a unique two-phase structure that combines the elasticity of rubbers with the processability of thermoplastics. Today, TPEs produced by dynamic vulcanization (thermoplastic vulcanizates, TPVs), which demonstrate superior performance characteristics, are of particular importance. The aim of this work was to create dynamically vulcanized TPEs based on nitrile butadiene rubber (NBR-40 AMN) and polyvinylidene fluoride (PVDF) containing a peroxide curing system, as well as to study the influence of the peroxide system concentration on the structure and properties of the resulting materials. The microstructure of the obtained materials was studied using FTIR spectroscopy and differential scanning calorimetry. It has been shown that an increase in the degree of vulcanization of the elastomeric phase leads to an improvement in the complex of operational characteristics: tensile strength, elongation at break, thermal stability, and resistance to aggressive media. The materials demonstrate excellent resistance to water, oil, and petroleum, as well as good resistance to gasoline. Samples with a curing agent content of 0.75 phr possess the best characteristics and the target morphology, where the thermoplastic forms a continuous matrix and the cross-linked elastomer is dispersed within it as particles. For these samples, resistance to thermal aging and recyclability were additionally determined. It was found that the change in key performance characteristics after recycling does not exceed 10%. The obtained materials meet the requirements for oil- and fuel-resistant compositions and may be of interest for use in the automotive, oil, and gas industries. The use of domestic raw materials for their production (nitrile butadiene rubbers are produced by PJSC "SIBUR Holding," and PVDF is produced by JSC "GaloPolymer") ensures the import substitution potential of the development.

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