Degradation of a silicone-based coating in a substation application
Degradation of a silicone-based coating in a substation application
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变电站应用中有机硅涂层的降解
DOI：
10.1109/61.736713
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发表时间：
1999
影响因子：
4.4
通讯作者：
S. Boggs
中科院分区：
文献类型：
--
作者：
K. Eldridge;J. Xu;W. Yin;A. Jeffery;J. Ronzello;S. Boggs
在长岛湾附近的一个345 kV开关站，应用于绝缘子的RTV硅橡胶涂料在使用六年后发生解聚并变成油灰状。涂层样品取自高蠕变绝缘子，这些绝缘子经过通电和风化、风化但未通电、以及既不经过风化也不通电（仓库储存）。未风化和未通电的涂层似乎没有降解。风化但未通电的涂层已明显退化，但仍处于运行状态。充满活力和风化涂层已成为腻子线，失去了所有的物理完整性。这表明老化是由化学、光化学（风化）和电化学机制共同作用的结果。
An RTV silicone rubber coating applied to insulators in a 345 kV switchyard located near Long Island Sound has depolymerized and become putty-like after six years of service. Coating samples were taken from high creep insulators which were energized and weathered, weathered but not energized, and neither weathered or energized (warehouse storage). The unweathered and unenergized coating did not appear to degrade. The weathered but unenergized coating had degraded measurably but was still in an operational state. The energized and weathered coating has become putty-line and lost all physical integrity. This suggests aging by a combination of chemical, photochemical (weathering), and electrochemical mechanisms.