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文章编号：1672-6987（2026）02-0072-06；DOI：10. 16351/j. 1672-6987. 2026. 02. 011
张 帆，张连康，李国倡* ，郝春成 （青岛科技大学 先进电工材料研究院，山东 青岛 266042）
摘 要：高原地区紫外辐照是影响户外电力设备绝缘性能的重要因素。研究了模拟日光紫外 辐照环境对电力电缆附件硅橡胶材料电气绝缘性能的影响。从微观结构、介电性能、电阻、陷 阱特性以及放电特性等方面研究了温湿度可控条件下紫外辐照对硅橡胶电气绝缘性能的影 响规律，揭示了紫外辐照对硅橡胶绝缘性能的影响机理。实验结果表明，随着老化程度的增 加，试样介电常数逐渐增大，1 000 h 时达到 4. 35；体积电阻率逐渐下降，1 000 h 时下降至 1. 16×1013 Ω· cm，试样陷阱能级约为 0. 33 eV。进一步分析放电特性，试样沿面闪络电压和 击穿强度随着老化程度的增加逐渐下降，1 000 h 时降低率分别为 29. 6% 和 12. 6%。分析认 为，实验中紫外线对硅橡胶分子链具有较强的破坏作用，造成绝缘劣化与缺陷增多；此外，实 验中喷淋与冷凝模式产生的水分会造成试样中杂质溶于水形成杂质离子，材料载流子迁移率 增加。
关键词：电缆附件；紫外辐照；硅橡胶；绝缘特性
中图分类号：TQ 207+. 2 文献标志码：A
引用格式：张帆，张连康，李国倡，等 . 温湿度可控条件下紫外辐照对硅橡胶电气绝缘性能的 影响［J］. 青岛科技大学学报（自然科学版），2026，47（2）：72-77.
ZHANG Fan， ZHANG Liankang， LI Guochang， et al. Effect of ultraviolet irradiation on elec⁃ trical insulation property of silicone rubber under temperature and humidity control［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition），2026，47（2）： 72-77.
Effect of Ultraviolet Irradiation on Electrical Insulation Property of Silicone Rubber Under Temperature and Humidity Control
ZHANG Fan，ZHANG Liankang，LI Guochang，HAO Chuncheng （Institute of Advanced Electrical Materials， Qingdao University of Science and Technology， Qingdao 266042， China）
Abstract：Ultraviolet radiation in sunlight in plateau area is an important factor affecting the insulation performance of outdoor power equipment. In this paper， the influence of simulated solar ultraviolet irradiation environment on the electrical insulation performance of silicone rubber materials for power cable accessories is studied. The effects of ultraviolet radiation on the electrical insulation properties of silicone rubber under temperature and humidity control were studied from the aspects of microstructure， dielectric properties， resistance and trap characteristics and discharge characteristics， and the influence mechanism of ultraviolet radiation on the insulation properties of silicone rubber was revealed. The experimental results show that with the increase of aging degree， the dielectric constant of the sample increases gradually， reaching 4. 35 at 1 000 h. The volume resistivity gradually decreased to 1. 16 × 1013 Ω· cm at 1 000 h， and the trap energy level of the sample was about 0. 33 eV. Further analysis of the discharge characteristics shows that the surface flashover voltage and breakdown strength of the sample gradually decrease with the increase of aging degree， and the reduction rates at 1 000 h are 29. 6% and 12. 6%， respectively. The analysis shows that ultraviolet light has a strong destructive effect on the molecular chain of silicone rubber， resulting in insulation deterioration and increased defects. In addition， the water generated by the spray and condensation modes in the experiment will cause the impurities in the sample to dissolve in water to form impurity ions， and the carrier mobility of the material will increase.
Key words：cable accessories； UV irradiation； silicone rubber； insulation characteristic
收稿日期：2025-06-30
基金项目：山东省高等学校“青创科技支持计划”项目（2021KJ023）.
作者简介：张 帆（1997—），男，硕士研究生 . * 通信联系人 .
