电力电容器用聚丙烯薄膜表面变化的评价

Chao Zhang, S. Rigby, Robert C. Kempke, C. L. Fellers, Marco J. Mason, Xiaoyi Shen
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引用次数: 1

摘要

在聚丙烯膜绝缘电力电容器中,聚丙烯膜的表面变化对电容器的电性能至关重要。目前,该行业使用空间因子来表征地表蚀变。在这项研究中,作者用Keyence VK9700三维激光显微镜研究了三种不同的聚丙烯薄膜用于电力电容器的表面变化。三种聚丙烯薄膜具有相似的空间系数值、相似的标称厚度和膜面改造要求。研究发现,三种聚丙烯薄膜在表面蚀变结构的形貌和粗糙度参数值上存在许多显著差异,这表明空间因子法在全面表征表面蚀变方面存在局限性。结果表明,与普通光学显微镜相比,VK9700激光显微镜能提供更清晰的薄膜表面图像,并能提供更多的表面变化信息。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of surface alteration of polypropylene film for power capacitors
In polypropylene film insulated power capacitors, the surface alteration of the polypropylene film is critical to the electrical performance of the capacitors. Currently, the industry uses space factor to characterize the surface alteration. In this study, the authors investigated the surface alteration of three different polypropylene films used for power capacitors with a Keyence VK9700 3D laser microscope. The three polypropylene films have similar space factor values, similar nominal thickness and film surface alteration requirements. The study finds that the three polypropylene films have many significant differences in the morphology of the surface alteration structure and values of roughness parameters which indicate the limitations of the space factor methodology in fully characterizing surface alteration. The results show that the VK9700 laser microscope can provide much clearer film surface pictures and can provide much more surface alteration information than the ordinary optical microscope.
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