Degradation of electrical properties of organic industrial laminates due to moisture absorption

Proceedings of the 3rd International Conference on Conduction and Breakdown in Solid Dielectrics Pub Date : 1989-07-03 DOI:10.1109/ICSD.1989.69246

M.G. Sumangala, P. Poovamma, K. Dwarakanath, K.S. Arunachala Sastry, M. Ratra

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引用次数: 3

Abstract

The influence on certain important electrical properties such as insulation resistance, breakdown voltage, comparative tracking index (CTI), and arc resistance in industrial organic laminates is discussed. Four different types of laminates-paper phenolic, glass-epoxy, glass-melanine, and sheet molding compounds-were selected for the investigation. The influence of araldite coating on the sides of the specimens was also investigated for some of the properties mentioned above. It is shown that glass-epoxy laminates and paper phenolic laminates exhibit very good and very poor performance, respectively. The behavior of CTI and the arc resistance of the laminates with respect to electrode material suggest that the physical processes responsible for the degradation of the material are entirely different than for the other properties. The araldite coating did not improve the properties. Instead it had an adverse effect on most of the characteristics.<>

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有机工业层压板因吸湿引起的电性能退化

讨论了复合材料对工业有机层压板的绝缘电阻、击穿电压、比较跟踪指数(CTI)和耐电弧等重要电性能的影响。四种不同类型的层压板-纸酚醛，玻璃-环氧树脂，玻璃-黑色素和片状成型化合物-被选择进行调查。同时还研究了钠盐涂层对试样侧面性能的影响。结果表明，玻璃环氧树脂层合板和纸酚醛层合板的性能分别很好和很差。CTI的行为和层压板的抗电弧性能相对于电极材料表明，负责材料降解的物理过程与其他性能完全不同。钠盐涂层并没有改善其性能。相反，它对大多数特征都有不利影响。

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Proceedings of the 3rd International Conference on Conduction and Breakdown in Solid Dielectrics

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