Dispersion of unsaturated polyester compound using nano-barium titanate ceramic powder and study of its electrical insulation properties

To prepare the polymer composites, unsaturated polyester (UPE) was used as the matrix material while BaTiO3 (7-50 nm) was used as the dispersion material in weight proportions of (0.25, 0.75, 1.25 and 2 wt%). The results of this study showed the lowest and highest frequencies (50 Hz and 5 MHz) and the dielectric constant increased with the increase in addition rate. The dielectric constant (ε_r) also varied with the increase in the frequency of the applied electric field in the range of (50 Hz – 5 MHz) at room temperature. The addition rate of BaTiO3 increased with the increase in frequency at both (50Hz) and (5MHz) while the dielectric loss factor decreased with the increase in the frequency of the electric field applied to the fabricated insulating material. The composite samples were prepared using the hand lay-up technique and cut according to the specified parameters. The dielectric constant (ε_r), dielectric loss factor (ε_r^") and alternating conductivity (σ_(a.c)) at different frequencies and temperatures were studied. The results show that the dielectric constant and dielectric loss factor, on the other hand, were found to decrease with the increase of the frequency of the applied electric field, but increased with the increase of the addition ratio of barium and titanium. It increased with the increase of the frequency of the applied electric field