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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ritamäki, Mikael
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2019Steering Capacitor Film Development with Methods for Correct and Adequate Dielectric Performance Assessment
- 2018Compounding, Structure and Dielectric Properties of Silica-BOPP Nanocomposite Filmscitations
- 2018Short-Term Dielectric Performance Assessment of BOPP Capacitor Films: A Baseline Studycitations
- 2017The Role of Film Processing in the Large-Area Dielectric Breakdown Performance of Nano-Silica-BOPP Filmscitations
- 2017Polypropylene/SIO2 nanocomposite with improved dielectric properties for DC cables
- 2017Large-area approach to evaluate DC electro-thermal ageing behavior of BOPP thin films for capacitor insulation systemscitations
- 2016Differences in AC and DC large-area breakdown behavior of polymer thin filmscitations
- 2016Dielectric breakdown properties of mechanically recycled SiO2-BOPP nanocompositescitations
- 2015DC ramp rate effect on the breakdown response of SiO2-BOPP nanocompositescitations
- 2015Effects of thermal aging on the characteristic breakdown behavior of nano-SiO2-BOPP and BOPP filmscitations
- 2015The role of film processing in the large-area dielectric breakdown performance of nano-silica-BOPP filmscitations
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document
DC ramp rate effect on the breakdown response of SiO2-BOPP nanocomposites
Abstract
The effect of voltage ramp rate on the short-term dielectric breakdown strength of polymer nanocomposites is not well-documented. In this paper, the effect of DC field ramp rate on the large-area breakdown performance of melt-extruded bi-axially oriented polypropylene (BOPP) films incorporating 4.5 wt-% of nano-silica is studied. By utilizing a self-healing multi-breakdown measurement method with a variable DC voltage ramp rate, a statistically large amount of breakdown data was obtained from a large total sample film area as a function of DC field ramp rate (0.1-50 Vs<sup>-1</sup>μm<sup>-1</sup>)). With a decreasing ramp rate, Weibull statistical analysis of the breakdown data suggests a systematically decreasing trend in the breakdown strength (Weibull α) and an increase in the Weibull shape parameter of time (>1) for the nanocomposite. The observed behavior is speculated to be attributable to highly altered internal charge dynamics of the silica-BOPP nanocomposite. The results exemplify the importance of careful breakdown strength assessment when dielectric films of more complex internal structure are studied.