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Investigates microwave shielding and absorption properties in composites, suggesting improvements for material design.
The microwave shielding properties of epoxy (EP) composites (CMs) with different types of fillers (thermally expanded graphite (TEG), TEG modified with Ni, carbon nanotubes (CNT), iron particles (Fe), mixture (CNT/30%Fe), and 3-layer composite structures (CSs) were investigated in the frequency range of 26–60 GHz. The CM with porous TEG-Ni filler exhibited the best electromagnetic radiation (EMR) shielding parameters and high EMR absorption. The observed significant enhancement of microwave absorption capability for CSs occurs due to the gradient distribution of nanocarbon content in CS layers that provides a good impedance matching and an increase in EMR absorption (A = 0.87–0.97) inside CSs.
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Вовченко et al. (2026) studied this question.
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