潮湿入侵对环氧树脂性能恶化的影响,以及修改和增强方法
Sixiao Xin1, Jingyi Hou2, Liang Zou1
1School of Electrical Engineering, Shandong University, Jinan 250061, China.
Materials (Basel, Switzerland)
|September 27, 2025
概括
这项研究使用纳米填充剂增强了用于高湿度环境的环氧树脂绝缘. 石墨烯 (GR) 提高了热性能,而SiO2提高了介电性能,使GR成为变压器的最佳选择.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 纳米技术 纳米技术
背景情况:
- 高频变压器中的环氧树脂绝缘在潮湿条件下降解,影响介电性质.
- 由于水分的入,老化会损害变压器的可靠性和寿命.
- 开发耐湿性环氧树脂对于电力电子来说至关重要.
研究的目的:
- 为了提高环氧树脂绝缘材料的湿度适应性,用于高频变压器.
- 研究碳纳米管,石墨烯 (GR) 和SiO2纳米填充剂对环氧树脂特性的影响.
- 为了确定最佳的纳米填充剂,以改善湿条件下的热和介电性能.
主要方法:
- 用分子动力学模拟来建模纯环氧树脂和纳米复合材料.
- 使用LAMMPS软件 (17Apr2024版本) 来进行计算.
- 包括热扩散系数,玻璃过渡温度和介电常数在内的关键性质在不同的水分含量下计算.
主要成果:
- 与纯环氧树脂相比,所有纳米填充剂合环氧树脂模型都显示出更好的性能.
- 石墨烯 (GR) /环氧树脂复合材料在导热性,散热性和玻璃过渡温度方面显著提高.
- SiO2 / 环氧树脂复合材料显示出优越的介电性质.
结论:
- 纳米填充剂有效地提高了环氧树脂绝缘在高湿度环境中的性能.
- 石墨烯 (GR) 是增强热性能和玻璃过渡温度的最佳填充剂,对于高温变压器运行和散热至关重要.
- SiO2提供了最佳的介电性能,而GR为变压器绝缘提供了最佳的整体热管理解决方案.
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