Issue №: 4 (131)
The journal solves the problems of creation and improvement of machinery and technologies for agriculture: 131 - Applied Mechanics, 132 - Materials Science, 133 - Industrial Engineering, 141 - Power Engineering, Electrical Engineering and Electromechanics, 208 - Agricultural Engineering
DIELECTRIC PROPERTIES OF EPOXY COMPOSITES WITH NANODISPERSED COPPER, CARBON MULTILAYER NANOTUBES AND COBALT WHEN MODIFYING THE ESHI BINDER
Petro STUKHLIAK – Doctor of Technical Sciences, Professor of the Department of Computer-Integrated Technologies of Ternopil Ivan Pulyu National Technical University (St. Ruska, 56, Ternopil, Ukraine, 46000, e-mail: stukhlyakpetro@gmail.com, https://orcid.org/0000-0001-9067-5543).
Oleh TOTOSKO – Candidate of Technical Sciences, Associate Professor, Associate Professor of the Department of Computer-Integrated Technologies of Ternopil Ivan Pulyu National Technical University (St. Ruska, 56, Ternopil, Ukraine, 46000 e-mail: totosko@gmail.com, https://orcid.org/0000-0001-6002-1477).
Danylo STUKHLIAK – Candidate of Technical Sciences, Associate Professor, Associate Professor of the Department of Computer-Integrated Technologies of Ternopil Ivan Pulyu National Technical University (St. Ruska, 56, Ternopil, Ukraine, 46000 e-mail: e-mail: itaniumua@gmail.com, https://orcid.org/0000-0002-9404-4359).
The paper presents the results of a study of molecular mobility in an epoxy binder containing nanofillers of various types: nanodispersed copper (Cu), cobalt (Co), and carbon multilayer nanotubes (CMLN) under modification by electric spark hydro-impact (ESHI). The research focuses on the dielectric characteristics of the formed composites, in particular on the dielectric loss tangent, which serves as an informative indicator of segmental mobility of polymer chains and the intensity of relaxation processes in the solid state. It has been established that the introduction of nanofillers into the epoxy matrix leads to a systematic shift of the temperature maximum of the dielectric loss tangent and to a change in the shape of relaxation peaks, which indicates a modification of the molecular mobility of macromolecular fragments and the formation of interphase layers with altered energy states. Comparative analysis of the influence of Cu, Co, and CMLN reveals different efficiencies in the formation of interfacial interactions, determining the nature of dipole relaxation, the degree of restriction of segmental motion, and the polarization behavior of the composite. Carbon multilayer nanotubes demonstrate the most pronounced effect on relaxation processes due to the formation of a branched conductive network and barrier layers, whereas metallic nanoparticles mainly influence local polarization mechanisms associated with surface defects and electronic polarization. The obtained results confirm that ESHI modification combined with nanofilling enables controlled tuning of dielectric and relaxation properties of epoxy systems. This creates prerequisites for the development of functional polymer composites with predetermined electrical, polarization, and operational characteristics for applications in electrical engineering, electronics, and protective coatings.
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About journal
The magazine "Engineering, Energy, Transport AIC" is included in the list of scientific professional editions of Ukraine on technical sciences
(Category "Б", Order of the Ministry of Education and Science of Ukraine dated 02.07.2020 №886)
According to the decision of National Council of Television and Radio Broadcasting of Ukraine from 25.04.2024 No. 1337 the scientific journal «Engineering, Energy, Transport AIC» has the ID of the Media R30-05173.
The journal "Engineering, Energy, Transport AIC" is indexed according to the following databases and catalogs:
Certificate of state registration of mass media: No. 21906-11806 P dated 03/12/2016.
Founder of the journal: Vinnytsia National Agrarian University
Type of publication: journal
Kind of publication: scientific
Publication status: domestic
Year of foundation: 1997
Periodicity: 4 times per year
Volume: 18-20 conv. print. sheet (А4)
ISSN: 2520-6168 (print version), (online version)
Language of publication: (mixed languages) Ukrainian, English
The sphere of distribution and category of readers: national, foreign, faculty, scientists, entrepreneurs.
The periodical edition is included to the List of scientific professional publications of Ukraine on technical sciences, approved by order of the Ministry of Education and Science of Ukraine in 05.16.2016, No. 515.
The journal "Engineering, Energy, Transport AIC" is included in the "Catalog of Ukrainian Publications".
Subscription to the journal can be issued in each post office. The subscription index is 99720.
Technology, energy, agriculture transport AIC is a scholarly professional journal with a long-standing history and stable academic tradition, reflecting the evolution of engineering and technical sciences within the agro-industrial sector of Ukraine.
The journal was founded in 1997 under the title Bulletin of Vinnytsia State Agricultural Institute. According to the Resolution of the Presidium of the Higher Attestation Commission of Ukraine dated September 11, 1997, the publication obtained the status of a professional scientific journal, which enabled the publication of the main results of doctoral and candidate dissertations in technical sciences. From its inception, the journal positioned itself as an academic platform for addressing current issues of mechanization, electrification, and technical support of agricultural production.
During 2001–2014, the journal was published under the title Proceedings of Vinnytsia National Agrarian University. Series: Technical Sciences (State Registration Certificate of Print Media KV No. 16644-5116 PR dated April 30, 2010). Throughout this period, a systematic approach to the selection and peer review of scientific manuscripts was established, the thematic scope of publications was expanded, and continuity of scientific directions as well as the development of sectoral engineering schools was ensured.
Since 2015, the journal has been published under its current title, Technology, energy, agriculture transport AIC (State Registration Certificate No. 21906-11806 R dated March 12, 2016). The change of title reflected the expansion of the journal’s thematic coverage and its orientation toward interdisciplinary research in mechanical engineering, energy systems, electrical engineering, transport technologies, automation, and digital solutions for the agro-industrial complex.
The journal consistently adheres to the principles of open science. All published materials are distributed under the Creative Commons Attribution 4.0 International License (CC BY 4.0), ensuring open access to research results provided proper attribution to the authors and the original publication is maintained.
At present, Technology, energy, agriculture transport AIC is an authoritative professional scientific journal (Category B), providing a platform for the publication of fundamental and applied research results, promoting the integration of education, science, and industry, and contributing to the advancement of engineering and technological support of the agro-industrial complex of Ukraine.
