Dielectric and thermophysical properties of Ethylene Vinyl Acetate/BaTiO3 composites

Dielectric and thermal behaviour of Ethylene Vinyl Acetate/Barium Titanate spheres (EVA/BaTiO3) composite materials were investigated in this work. Several composites were prepared for different volume concentration (from 5% to 49%) and for two types of spheres sizes d: d = 9 and d = 105. A simultaneous determination of the thermal conductivity and the diffusivity was achieved using a periodic method. The experimental results of the relative permittivity were obtained from capacitance measurements performed on square plate samples in the frequency range from 10(3) Hz up to 10(6) Hz.