Aromatic amine cured Bisphenol F epoxy resin is used as a pivotal solid insulation material in electrical equipment at low temperature and extreme environment. Partial discharge (PD) can lead to an increase in local temperature, which leads to pyrolysis, and the existence of PD active products will aggravate the pyrolysis process of insulating materials. In order to investigate the effect of PD active products on the pyrolysis characteristics of aromatic amine cured epoxy resin, the pyrolysis process of epoxy resin under partial discharge active products is simulated based on ReaxFF. The types and changing trend of small molecular products and the mechanism of PD active products acting on the pyrolysis process of epoxy resin are analyzed. The results show that the oxidation of hydroxyl and C-N bridge bonds by PD active products is the main reason for accelerating the pyrolysis of epoxy resin, which changes the main pyrolysis path of epoxy resin cross-linked structure. The thermal stability of cross-linked epoxy resin decreases under the action of active products, and the types and change trend of small molecular products generated in the pyrolysis process also changes greatly with the change of pyrolysis path.

芳香胺固化的双酚F环氧树脂在低温和极端环境下用作电气设备中的关键固体绝缘材料。部分放电（PD）会导致局部温度升高，从而导致热解，并且PD活性产物的存在会加剧绝缘材料的热解过程。为了研究PD活性产物对芳香胺固化环氧树脂热解特性的影响，基于ReaxFF对环氧树脂在局部放电活性产物下的热解过程进行了模拟。分析了小分子产物的种类和变化趋势，以及PD活性产物对环氧树脂热解过程的作用机理。结果表明，PD活性产物氧化羟基和CN桥键是加速环氧树脂热解的主要原因，改变了环氧树脂交联结构的主要热解路径。交联环氧树脂的热稳定性在活性产物的作用下降低，并且在热解过程中产生的小分子产物的类型和变化趋势也随着热解路径的改变而发生很大变化。