Behaviour of Water Droplets Under the Influence of a Uniform Electric Field in Nanocomposite Samples of Epoxy Resin/TiO2

Abstract

In this paper nanocomposite samples of epoxy resin and TiO2 nanoparticles were investigated with water droplets on their surface. 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, the number of droplets and the droplet positioning with respect to (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.

Study of Water Droplets Behavior on Electrical Machine Insulation Under the Influence of Uniform Electric Fields: the Influence of Some Parameters on Mica Sheets

“…The experimental results presented here indicate that there is a relationship between flashover voltage and the above mentioned parameters. The effect of water conductivity, surface roughness, droplet volume and number of droplets was studied elsewhere with both traditional polymers materials and with nanocomposite materials [7][8][9][10][11][12]. The results of the present study are qualitatively not that different from the experimental results of the references [7][8][9][10][11][12].…”

“…The effect of water conductivity, surface roughness, droplet volume and number of droplets was studied elsewhere with both traditional polymers materials and with nanocomposite materials [7][8][9][10][11][12]. The results of the present study are qualitatively not that different from the experimental results of the references [7][8][9][10][11][12]. One may object to the fact that in this paper only mica sheets were investigated and not mica sheets impregnated with epoxy resin.…”

A New Miniature Micro-Strip Two-Layer Band-Pass Filter Using Aperture-Coupled Hairpin Resonators

“…The circuit was designed and optimized using a substrate with relative dielectric of ε r = 6.15, loss tangent of 0.0027, and thickness 50mil (1.27mm). The filter can be synthesized using the method reported in [10,19] from which the lumpedelement values of low pass prototype filter were determined as:…”

Study of The Phenomena of Surface Discharges and Flashover in Nanocomposite Epoxy Resin under the Influence of Homogeneous Electric Fields

“…The experimental arrangement used is described in detail in earlier publications [7,12] and only a brief mention will be given here. The voltage was supplied from a 20kV transformer.…”