Evaluation of Current in Composites PVAL/Ceramics for Detection of Leakage Current Generated in Electrical Insulators

Abstract:

This research aims to prepare composites of polyvinyl alcohol (PVAL) with ceramic nanoparticles loads (NPs) of Ti_1.95Eu _0.05O₂; ZnAl₂O₄ and Ni_0.5Zn_0.5Fe₂O₄ to evaluate the detection of leakage current generated in electrical insulator. The composites were prepared in the proportion of 6/1.5 g of the PVAL/ceramics and characterized by XRD, FTIR, SEM and measurements of the current as a function of applied voltage. The results show for the composites with Ti_1.95Eu_0.05O₂ and ZnAl₂O₄ a homogeneous morphology, while the structure of the composite formed by Ni_0.5Zn_0.5Fe₂O₄ resulted in a heterogeneous and porous morphology. The determination of the current as a function of the applied voltage has shown that there is a dependence of morphology and the semiconductor characteristic of the load used and the best results are therefore assigned for the composite produced with the Ti_1.95Eu_0.05O₂ load with homogeneous morphology and high current values as a function of the applied voltage.

• Periodical: Materials Science Forum (Volume 869)
• Pages: 308-313
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.869.308
• Online since: August 2016
• Authors: Ana Cristina S. Costa Jr.*, Patrícia Costa Fernandes Menezes, A.J.V. Andrade, Thiago Silva, E.G. Costa, A.C.F.M. Costa
• Keywords: Ceramic Loads, Composites, Electrical Insulators, PVAL

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