Journal
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
Volume 497, Issue -, Pages 378-386Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/15421400802458456
Keywords
carbon nanotube; dielectric permittivity; electromagnetic shielding; nanocarbon filler; porosity
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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 (similar to 1-2 wt.%.) of a nanocarbon filler in CMs, the coefficient of EMR transmission is -(25-27) dB (for h = 1 mm). The real epsilon' and imaginary epsilon '' parts of dielectric permittivity of the composites under investigation have beet? determined.
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