ROMJIST Volume 25, No. 3-4, 2022, pp. 322-337
Lakhdar MADANI, Kamel Salim BELKHIR, Abdelkrim ZEBAR, Saad BELKHIAT UV Effect on the Dielectric Properties of Al2O3/TiO2 Doped PVC
ABSTRACT: Poly-vinylchlorid (PVC) is a material strongly used as cable insulation sheaths. Its dielectric properties are susceptible to be deteriorated under the Ultraviolet (UV) radiation effect. In this paper, films of PVC have been doping with alumina and titanium dioxide. The influence of Al2O3 and TiO2, on the dielectric properties of PVC before and after being exposed to 300 h of UV irradiation were studied. FTIR spectroscopy and scanning electron microscopy were used as characterization techniques. Dielectric characteristics were measured using an impedance analyzer. Volume resistivity and average breakdown voltage have been analyzed. Experimental results showed well that Al2O3/TiO2 as nano-fillers improved the dielectric properties of PVC and reduced ageing due to UV irradiation. Volume resistivity decreased and breakdown voltage increased with ceramic content.KEYWORDS: Al2O3/TiO2 doped PVC; breakdown voltage; UV ageing; volume resistivityRead full text (pdf)