南方电网技术2017，Vol.11Issue(1)：36-44,9.DOI:10.13648/j.cnki.issn1674-0629.2017.01.006
基于TG-DSC法的复合绝缘子硅橡胶主组分含量研究
TG-DSC Coupling Techniques Based Investigation on Main Component Content of Silicone Rubber Composite Insulators
摘要
Abstract
The component contents of silicone rubber composite insulators play a very important role in their quality and service life, but the detecting method of component contents is still inadequate for the electric power department.In this paper, TG-DSC technology is employed to study the thermal decomposition behavior of silicone rubber and its main components (aluminum hydroxide, organic silicone compounds, inorganic materials such as silica), and a method is developed to calculate the component contents according to the thermal weight loss rate in a certain temperature range.The method has been applied to the quality control, operation state evaluation and aging invalidation analysis for composite insulators.A series of composite insulators from several companies are evaluated by this method, and the results indicate that the contents of organic silicone compounds are about 35.9%~40.7%.Layer by layer sections analyses are conducted to running composite insulator skirts, and it is found that the polydimethylsiloxane (PDMS) contents vary with the depth, which reflects the aging state of the housing surface.In addition, this method also provides the component contents information at a selective silicone rubber housing region around fault locations, which can be used for failure analysis for the broken composite insulator.So TG-DSC method for silicone rubber component contents analysis is helpful for the operation and maintenance management of composite insulators, and also is helpful for ensuring the safety and stability of electric power network.关键词
复合绝缘子/热重分析/氢氧化铝/白炭黑/硅橡胶/老化行为Key words
composite insulators/thermogravimetric analysis/aluminium hydroxide/silica aerogel/silicone rubber/aging behavior分类
信息技术与安全科学引用本文复制引用
彭向阳,李子健,黄振,汪政,罗义,方鹏飞..基于TG-DSC法的复合绝缘子硅橡胶主组分含量研究[J].南方电网技术,2017,11(1):36-44,9.基金项目
南方电网公司重点科技项目(K-GD2014-185).Supported by key Science and Technology Project of China Southern Power Grid Co., Ltd.(K-GD2014-185). （K-GD2014-185）
