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Information × Registration Number 0223U001432, 0122U001958 , R & D reports Title Development of physical bases for control of electromagnetic properties of composite structures with combined nanofillers popup.stage_title Head Vovchenko Liudmyla L., Доктор фізико-математичних наук Registration Date 28-01-2023 Organization Taras Shevchenko National University of Kyiv popup.description2 he object of research is composite materials with a given spatial distribution of multicomponent fillers and multi-layer composite structures with controlled electrodynamic properties. The goal of the NDR is to develop a scientific concept for the creation of multicomponent nanocomposite structures with controlled electrodynamic parameters based on the establishment of general patterns in the correlation between the type of composite structure and electromagnetic response, which are characterized by a high ability to shield and absorb microwave radiation, to determine the features of the influence of the phase composition of multicomponent fillers in composite monolayers structures on the mechanisms of energy dissipation of electromagnetic waves during their propagation through multilayer composite structures. As part of the work on the first stage of the NDR, samples of multicomponent epoxy composites (CM) were produced, the structure, morphology of fillers and their distribution in the epoxy matrix were studied, the features of the process of modifying the conductive cluster and changing the interphase polarization due to the integration of nanocarbons (graphite nanoplates of GNP, carbon CNT nanotubes) and inorganic (Fe, Co3О4, BaTiO3, MoS2) superdisperse fillers, the influence of the composition, morphology and concentration of combined fillers on the electrodynamic characteristics of composites and mechanisms of electrical transport in CM was determined, the analysis of impedance spectra was carried out within the framework of the model of equivalent electrical circuits, as well as modeling of the complex dielectric constant depending on the content of nanocarbon and the type of inorganic filler, a quantitative assessment of the contributions due to the reflection. Product Description popup.authors Zagorodniy Volodymyr V. Len Tetyana A. Sayenko Galyna V. Turkov Oleg V. Yakovenko Olena S. popup.nrat_date 2023-01-28 Close