The application of high-purity synthetic wax in the field of thermal management materials is mainly focused on phase change materials. Synthetic wax serves as a supporting matrix, and through melt blending, it improves morphological stability, efficiently stores and releases heat, buffers temperature fluctuations, and forms morphologically stable composite phase change materials. It is widely used in fields such as thermal interface management of electronic devices, thermal control of spacecraft, thermal management of batteries, and building energy storage.