芳香稳压器提高电力电子用环氧树脂高压稳定性的研究

Jiaxiong Li, K. Mohanalingam, Omkar Gupte, Zhijian Sun, K. Moon, C. Wong
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引用次数: 0

摘要

近年来,汽车传动系统电气化已成为汽车工业发展的大趋势。环氧树脂及其复合材料作为未来宽带隙半导体电源卡封装和隔离的关键部件,面临着高压工作带来的巨大挑战。本研究探索了采用萘、蒽和芘等具有不同环数的多环芳烃分子作为环氧树脂的电压稳定剂。共轭$\pi$系统会被进入的高能电子激发,从而吸收它们的动能,从而危及聚合物的完整性。记录了化合物的紫外可见光谱以说明其吸能行为,并给出了这些添加剂对环氧树脂固化、玻璃化转变温度和介电性能的影响。在研究中发现,芘可以提高环氧膜的击穿电压。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigation of Aromatic Voltage Stabilizers for Enhancing High Voltage Stability of Epoxy for Power Electronics
Drive train electrification in automotive industry has become the general trend in recent years. As crucial components in the encapsulation and isolation of future wide-bandgap semiconductor-based power cards, epoxy resin and its composites face great challenges from the high voltage operation. This work provides an exploration into employing a group of polycyclic aromatic hydrocarbon molecules with varied number of aromatic rings, namely naphthalene, anthracene and pyrene, as voltage stabilizers in epoxy resin. The conjugated $\pi$ system can be excited by the incoming high energy electrons, thus absorbing their kinetic energy which endangers the polymer integrity. The UV-Vis spectra of the compounds were recorded to illustrate the energy absorbing behavior, and the effects of these additives on epoxy curing, glass transition temperature and dielectric properties are presented. In the study, pyrene was found to enhance the breakdown voltage of the epoxy film.
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