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Study of the behavior of water droplets under the influence of a uniform electric field in epoxy resin samples having different wt% percentages of nanoparticles and microparticles


Affiliations
1 Department of Electrical and Computer Engineering,Democritus University of Thrace, Xanthi, Greece
2 State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University, Xi’an, P. R, China
3 Department of Electrical and Computer Engineering, Democritus University of Thrace, Xanthi, Greece
4 Department of Electrical Engineering, Indian Institue of Technology Madras, Chennai, India
     

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In this paper nanocomposite samples of epoxy resin and TiO2 nanoparticles and microparticles were investigated with water droplets on their surface. Samples with 1 wt% nanoparticles, 1 wt% nanoparticles with 3 wt% microparticles, 3 wt% nanoparticles and also 3 wt% nanoparticles with 3 wt% microparticles were investigated. A uniform electric field was applied and the behaviour of the water droplets was observed. Parameters that were studied were the water conductivity, the droplet volume, number of droplets and the droplet positioning w.r.t. the electrodes. All above mentioned parameters influence the flashover voltage of the samples. It is to be noted that – at least in some cases – the water droplet positioning w.r.t. the electrodes was more important in determining the flashover voltage than the droplet volume. The results indicate that the addition of microparticles in a nanocomposite does not necessarily improve the flashover voltage behaviour.

Keywords

Flashover voltage, surface discharges, nanocomposites, uniform electric field, water droplet, water conductivity
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  • Study of the behavior of water droplets under the influence of a uniform electric field in epoxy resin samples having different wt% percentages of nanoparticles and microparticles

Abstract Views: 250  |  PDF Views: 0

Authors

L. Zevgolas
Department of Electrical and Computer Engineering,Democritus University of Thrace, Xanthi, Greece
Y. Cheng
State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University, Xi’an, P. R, China
M. G. Danikas
Department of Electrical and Computer Engineering, Democritus University of Thrace, Xanthi, Greece
R. Sarathi
Department of Electrical Engineering, Indian Institue of Technology Madras, Chennai, India

Abstract


In this paper nanocomposite samples of epoxy resin and TiO2 nanoparticles and microparticles were investigated with water droplets on their surface. Samples with 1 wt% nanoparticles, 1 wt% nanoparticles with 3 wt% microparticles, 3 wt% nanoparticles and also 3 wt% nanoparticles with 3 wt% microparticles were investigated. A uniform electric field was applied and the behaviour of the water droplets was observed. Parameters that were studied were the water conductivity, the droplet volume, number of droplets and the droplet positioning w.r.t. the electrodes. All above mentioned parameters influence the flashover voltage of the samples. It is to be noted that – at least in some cases – the water droplet positioning w.r.t. the electrodes was more important in determining the flashover voltage than the droplet volume. The results indicate that the addition of microparticles in a nanocomposite does not necessarily improve the flashover voltage behaviour.

Keywords


Flashover voltage, surface discharges, nanocomposites, uniform electric field, water droplet, water conductivity



DOI: https://doi.org/10.33686/prj.v13i1.189194