▎ 摘　　要

The heat dissipation efficiency of the radiator is of great significance to the reliability of the power transformer system. However, traditional coatings on the radiator are designed to improve the corrosion resistance of radiators, which usually have a lower thermal conductivity. In this work, the thermal properties of graphene-doped coating have been studied using a combination of electrical and optical method. It has shown about a 15% improvement in the thermal conductivity compared to the traditional anticorrosive coatings. It will be shown that the graphene can not only spread more heat to enable the sample to reach the steady state more quickly but also enhance the heat radiation to lower the temperature. It provides a simple and effective way to accelerate the heat spread of radiators and thus lower the system temperature.