The paper describes the electrical properties of the composites consisting of polyurethane matrix dispersion-armoured with corundum grains (Al2O3). To prepare the materials, different corundum fractions were used. The dielectric permittivity… Click to show full abstract
The paper describes the electrical properties of the composites consisting of polyurethane matrix dispersion-armoured with corundum grains (Al2O3). To prepare the materials, different corundum fractions were used. The dielectric permittivity of the materials was measured and the dielectric loss tangent was calculated in X band (8–12 GHz).
               
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