关于混合修改双甲氧化物的一项研究
Xiaotao Fu1, Long Ma1,2, Lincong Chen1
1Key Laboratory of Physical and Chemical Analysis for Electric Power of Hainan Province, Hairui Road No. 23, Haikou 570100, China.
Polymers
|August 12, 2023
概括
经过修改的环氧树脂显示了复合绝缘体交叉臂的增强性能. 与酸环氧 (2021P) 和二次酸 (EPD) 的混合物改善了热力学和电气性能,在恶劣环境中增加了耐老化能力.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 电气工程 电气工程
背景情况:
- 以环氧树脂为基础的复合材料是重要的电气材料,但在高温,湿度和盐喷雾下降解.
- 确保复合材料绝缘体交叉臂的操作可靠性需要了解树脂老化机制和性能特征.
研究的目的:
- 为了评估复合绝缘体交叉臂修改过的环氧树脂系统的耐老性和性能.
- 分析湿热和盐喷老化对混合环氧树脂的影响.
主要方法:
- 在环氧树脂混合物上进行了湿热老化和盐喷老化实验.
- 这些混合物包括二A环氧树脂 (E-51) 修饰与阿里法性环氧 (2021P) 和二次酸 (EPD).
- 测量了热力学性能,介电损耗,泄漏电流和曲强度.
主要成果:
- 10重%的2021P和10重%的EPD混合物表现出优越的热力学性能.
- 与纯E51树脂相比,EPD混合物在老化后的介电损耗显著降低 (降低高达74.6%).
- 在2021P和EPD混合物中,泄漏电流下降,而在2021P混合物中,曲强度仍然很高.
结论:
- 经过修改的环氧树脂系统 (2021P和EPD混合物) 显示出强大的耐老化性和出色的电气和机械性能.
- 这些增强的环氧树脂是合适的矩阵材料,用于在具有挑战性的环境中工作的复合交叉臂.
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