BaTiO3 EFFECT ON THE DIELECTRIC PROPERTIES OF PVC

Polyvinyl chloride (PVC) is widely used as insulation in electrical engineering, especially as cable insulation sheaths. To improve its dielectric properties (In the case of modification under the effect of thermal ageing and the water absorption), these pal raters were doped by ceramic such as; Al203 especially to reduce the space charge which co Alg e trapped n he bulk under the effect of the environment. In this paper. the influence of bail itaraium oxide (BaTiCas). on the dielectric properties (dielectric loss factor (tga), relative perm er Ley (cr), loss i dex ) Of the polyvinyl chloride (PVC) has been studied. The study has be n carried out on o samples of PVC. A pure sample is studied as a standard sample and comp d with samples B(3)caTiCO(3) doped PVC and aged under humidity and temperature effects. tab. (er) and loss Mete are measured. The evolution of these later as a inaction of the frequency h the frequency range (20-300Hz). The comparison of experimental results shows the improvement of dielectric properties, obtained on the BaTiO3 doped PVC.