Electrophysical properties of electroconducting papers and cardboards treated with colloid-graphite solutions

Glow and bulk expansion of oxidized graphites stimulated by electromagnetic radiation

“…Dense graphite foil, having a high electric conductivity, absorbs microwave radiation only slightly. The depen dence of the coefficient of absorption of electromag netic radiation by a layer of graphite particles on the ratio of the conductivity σ and thickness d of the graphite layer is consistent with the results reported in [7,20,22] for electroconductive composites.…”

“…For thin conducting nonmagnetic samples [17,22], where 188 (Ohm) is the half the wave resistance of free space, σ is electric conductivity of the material (S/cm), and d is the sample thickness (mm). With increasing conductivity of the material, the degree of reflection of electromagnetic energy from the conduc tive surface largely grows, thereby increasing the effi ciency of screening.…”

Influence of fireproof coatings on electrical properties of conducting materials and related constructions

“…4, curves 3) is highest due to the thermal expansion of graphite in the coating and the formation of additional current-conducting structures [22]. It should be noted that a substantial difference between the reflection coefficients for the samples in which the coatings are located toward the substrate and toward the medium (Figs.…”

Paper Electronics

“…[ 63 ] By treating paper with water dispersions of graphite colloids, a surface resistivity of down to 20 Ω sq − 1 was demonstrated for electromagnetic shielding applications. [ 64 ] However, while the addition of large amounts of conductive fi llers to paper results in a higher conductivity, it typically also causes the paper to darken and adversely affects other physical properties.…”