High temperature studies of perfluoroalkoxy (PFA) film (for HV capacitors)

J. Suthar, J. Laghari
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引用次数: 4

Abstract

Teflon perfluoroalkoxy (PFA) film was characterized electrically to explore the possibility of its use for high-temperature high-voltage capacitors for space applications. The properties measured at temperatures up to 250 degrees C included the AC breakdown voltage and the dielectric constant and dissipation factor at frequencies up to 100 kHz. To understand the breakdown mechanism taking place at these higher temperatures, the prebreakdown conduction currents were also monitored. The results show a drastic reduction in the dielectric strength, as well as an increase in dissipation factor and conduction current with increasing temperature. The results are explained in light of the breakdown models available.<>
全氟烷氧基(PFA)薄膜(高压电容器用)的高温研究
对全氟烷氧基聚四氟乙烯薄膜进行了电学表征,以探索其用于空间应用的高温高压电容器的可能性。在高达250摄氏度的温度下测量的性能包括交流击穿电压、介电常数和频率高达100 kHz的耗散因子。为了了解在这些较高温度下发生的击穿机制,还监测了击穿前的传导电流。结果表明,随着温度的升高,介质强度急剧降低,耗散系数和传导电流增大。根据现有的击穿模型对结果进行了解释。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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