电机绕组用非金属材料容易随着温度和时间的变化发生性能劣化，非金属材料的活化能可以将实际使用条件和加速老化条件联系起来，用于鉴定非金属材料的热寿命，其值直接决定材料热寿命鉴定的温度和老化时间。本文介绍了非金属材料目前活化能推算的主要方法，包括：热重分析法、DSC分析法、热重分析和热老化试验结合法以及热老化试验评定法等。并详细给出每种方法的具体实施过程，以及方法之间的区别及适用范围，便于不同评定材料推算方法的选择。

Non-metallic materials used for motor windings were prone to performance degradation with changes in temperature and time. The activation energy of non-metallic materials could be used to identify the thermal life of non-metallic materials by connecting the actual service conditions and accelerated aging conditions. Its value directly determined the temperature and aging time for the thermal life identification of materials. This article mainly introduced the current main methods of activation energy estimation, including thermogravimetric analysis, DSC analysis, combination of thermogravimetric analysis and thermal aging test, and thermal aging test evaluation methods. The specific implementation process of each method , the differences between the methods and the scope of application were given in detail, so as to facilitate the selection of determination methods for different evaluation materials.