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Abstract
We present the results of studies of the electromagnetic radiation (EMR) shielding by epoxy-nanocarbon composites (CMs). The EMR frequency range was 25.5–37.5 GHz. Thermoexfoliated graphite and multiwalled carbon nanotubes (CNT) have been used as fillers in CM (the content of a filler was 0.5–2 wt.%). We examined the effect of carbon filler's type in CM on characteristics of the electromagnetic shielding. It is shown that, even for low contents (∼ 1–2 wt.%) of a nanocarbon filler in CMs, the coefficient of EMR transmission is − (25-27) dB (for h = 1 mm).The real ϵ′ and imaginary ϵ″ parts of dielectric permittivity of the composites under investigation have been determined.