文章摘要
Investigation on Interfacial Structure Evolution of Silicone Rubber Material for Composite Insulator During Thermal Oxidative Aging Process
Received:June 20, 2024  Revised:June 20, 2024
DOI：10.12136/j.issn.1000-890X.2026.07.0491
Key Words: composite insulator；silicone rubber material；thermal oxidative aging；interfacial structure
Author NameAffiliationE-mail
LI Chao Yangzhou Shuangbao Electric Equipment Co.，Ltd hdguide@163.com 
MA Gang Yangzhou Shuangbao Electric Equipment Co.，Ltd  
SUN Yecheng Yangzhou University  
LIU Xiayu Yangzhou University  
LU Yuhe Yangzhou University  
LIU Junliang* Yangzhou University liujunliang@yzu.edu.cn 
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Abstract:
      The thermal oxidative aging process of silicone rubber material for composite insulator was studied from the perspective of interfacial structure evolution of the rubber matrix and the filler.The results showed that the silicone rubber material for composite insulator experienced the processes including the degradation of crosslinking structure，the desorption of filler particles and the reconstruction of crosslinking network during the thermal oxidative aging process.As a result，during accelerated aging process，the compatibility between the filler and the silicone matrix deteriorated，showing the separation of the rubber ‘sea’ phase and the inorganic filler ‘island’ phase，and the filler escaped from the encapsulation of the rubber matrix，which made the filler particles desorp from the rubber matrix and form as hole defects towards the rubber matrix.All these accelerated the structure damage and property deterioration of the silicone rubber material.
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