复合绝缘子硅橡胶老化过程中成分变化规律研究

doi:10.3969/j.issn.1008-0198.2023.06.003

湖南电力 ›› 2023, Vol. 43 ›› Issue (6): 11-14.doi: 10.3969/j.issn.1008-0198.2023.06.003

复合绝缘子硅橡胶老化过程中成分变化规律研究

宁凯, 蒋正龙, 付志瑶

国网湖南省电力有限公司防灾减灾中心(电网防灾减灾全国重点实验室),湖南长沙 410129

收稿日期:2023-10-12 出版日期:2023-12-25 发布日期:2024-01-07
作者简介:宁凯(1993),男,博士研究生,主要从事高电压与电网防灾工作。
基金资助:
国网湖南省电力有限公司科技项目(5216AF22000C);湖南省研究生科研创新项目(CX20210739)

Study on Composition Change Rule of Composite Insulator Silicone Rubber During Aging Process

NING Kai, JIANG Zhenglong, FU Zhiyao

State Grid Hunan Electric Power Company Disaster Prevention and Reduction Center (State Key Laboratory of Disaster Prevention & Reduction for Power Grid), Changsha 410129, China

Received:2023-10-12 Online:2023-12-25 Published:2024-01-07

摘要/Abstract

摘要： 为了研究复合绝缘子硅橡胶在老化过程中成分的变化规律,选择未使用和使用2年、6年、10年的复合绝缘子硅橡胶进行多项测试分析,包括扫描电子显微镜分析、热重分析、差示扫描量热分析、傅里叶变换红外光谱分析和X射线光谱分析。研究发现,在运行过程中,硅橡胶会逐渐劣化,表面会出现越来越多的裂纹和孔洞。此外,硅橡胶的运行状况与其组分中的氢氧化铝的变化和析出密切相关,老化过程中氢氧化铝的变化也最为显著。这项研究可以更好地反映硅橡胶的表面老化状态,对复合绝缘子的运行状况评估及老化失效分析具有重要意义。

关键词: 复合绝缘子, 硅橡胶, 氢氧化铝, 老化过程, 成分分析

Abstract: In order to study the variation rule of components in silicone rubber of composite insulators during aging process, various tests are conducted on unused silicone rubber as well as silicone rubber used for 2, 6 and 10 years. These tests includ scanning electron microscopy analysis, thermogravimetric analysis, differential scanning calorimetry analysis, Fourier transform infrared analysis, and X-ray spectroscopy analysis. The relevant results show that during operation, the integrity of silicone rubber molecular chains deteriorates, and more and more cracks and voids appear on the surface of silicone rubber. Additionally, the operation of silicone rubber is closely related to the variation and precipitation of aluminum hydroxide in its components, with aluminum hydroxide experiencing the most significant changes during operation. This study can better reflect the surface aging status of silicone rubber and is of great significance for the formulation design and aging failure analysis of composite insulators.

Key words: composite insulators, silicone rubber, aluminum hydroxide, aging process, component analysis

中图分类号:

TM855.2

宁凯, 蒋正龙, 付志瑶. 复合绝缘子硅橡胶老化过程中成分变化规律研究[J]. 湖南电力, 2023, 43(6): 11-14.

NING Kai, JIANG Zhenglong, FU Zhiyao. Study on Composition Change Rule of Composite Insulator Silicone Rubber During Aging Process[J]. Hunan Electric Power, 2023, 43(6): 11-14.

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复合绝缘子硅橡胶老化过程中成分变化规律研究

Study on Composition Change Rule of Composite Insulator Silicone Rubber During Aging Process

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