In smart grid reactive power compensation systems, capacitors are core components. Wax-based materials primarily serve two functions: insulation potting and sealing against moisture. The outstanding advantages are low cost, high moisture resistance, no electrode oxidation, repairability, and environmental friendliness, while also considering flowability and shape retention. It mainly used for insulation potting of metallized capacitors such as low-voltage self-healing power capacitors and AC motor starting capacitors.