The lack of hydrophobicity transfer capability has restricted the applications of insulating materials in environments with heavy contamination. In this study, an epoxy resin insulating composite was prepared using a micro-capsule system to achieve hydrophobicity transfer triggered by creepage discharge. The influence of the micro-capsules on the electrical properties of insulating materials and the hydrophobicity of the test samples before and after the creepage discharge test was analysed. The results show that the poly(urea-formaldehyde) micro-capsules, which contained hydrogen silicone oil, have good morphology and thermal stability characteristics at temperatures below 222°C. Micro-capsules have minor effects on the electrical properties of epoxy insulating materials. Further, the hydrophobicity transfer capability of the test piece was improved considerably compared with that of the pure epoxy insulating material. This study expands the application of micro-capsule technology in the field of insulating materials and provides a reference for the development of next-generation insulating materials.

中文翻译：

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爬电放电触发的具有疏水转移能力的新型微胶囊掺杂绝缘材料

疏水性转移能力的缺乏限制了绝缘材料在重污染环境中的应用。在这项研究中，使用微胶囊系统制备了环氧树脂绝缘复合材料，以实现由爬电放电触发的疏水性转移。分析了微胶囊在爬电放电试验前后对绝缘材料电性能和试样疏水性的影响。结果表明，含氢硅油的聚脲醛微胶囊在222℃以下具有良好的形貌和热稳定性。微胶囊对环氧绝缘材料的电性能影响较小。更远，与纯环氧绝缘材料相比，试件的疏水性转移能力显着提高。该研究拓展了微胶囊技术在绝缘材料领域的应用，为下一代绝缘材料的开发提供参考。