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In high-altitude regions, UV radiation intensity can be two to three times higher than in plains. Prolonged exposure to intense UV radiation can significantly accelerate the degradation of electrical materials, leading to a sharp decline in their properties. This reduces material service life and threatens the safety and stability of electrical equipment. Current research mainly focuses on physical and mechanical property changes under standard UV conditions, with limited investigation into electrical properties. Thus, systematic aging studies of materials under high-altitude UV conditions are urgently needed. This study examines the effects of intense UV radiation at 4500 m on silicone rubber properties. Using high-altitude UV data, we set parameters for artificial UV aging tests and conducted aging tests on silicone rubber. We evaluated its mechanical and electrical properties and characterized its micromorphology. Results showed a significant decrease in elongation at break and deterioration in hydrophobic migration characteristics after aging. These findings are crucial for understanding the long-term behavior of electrical materials in high-altitude UV environments.

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Study on the Effects of Ultraviolet Radiation on the Performance of Silicone Rubber Electrical Materials

  • 会议论文

  • 发表日期：

    2026年

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  • Hang Yin,
  • Xiaosheng Liu,
  • Jingkai Nie,
  • Yu Han,
  • Xuefeng Han,
  • Chenghao Wang,
  • Qiang He,
  • Xingzhou Li

摘要

In high-altitude regions, UV radiation intensity can be two to three times higher than in plains. Prolonged exposure to intense UV radiation can significantly accelerate the degradation of electrical materials, leading to a sharp decline in their properties. This reduces material service life and threatens the safety and stability of electrical equipment. Current research mainly focuses on physical and mechanical property changes under standard UV conditions, with limited investigation into electrical properties. Thus, systematic aging studies of materials under high-altitude UV conditions are urgently needed. This study examines the effects of intense UV radiation at 4500 m on silicone rubber properties. Using high-altitude UV data, we set parameters for artificial UV aging tests and conducted aging tests on silicone rubber. We evaluated its mechanical and electrical properties and characterized its micromorphology. Results showed a significant decrease in elongation at break and deterioration in hydrophobic migration characteristics after aging. These findings are crucial for understanding the long-term behavior of electrical materials in high-altitude UV environments.