Research on intelligent heaters based on PTC materials

The article summarizes the development of PTC heaters for spacecraft, including the development of PTC materials, PTC heater design, and application analysis. PTC materials have been developed with BaTiO3 based ceramic matrix materials with a Curie point of 20 °C and sunflower acid based polymer matrix materials with a Curie point of39 ± 3 ℃; Ceramic based PTC heaters are suitable for shell structure schemes, while polymer based PTC heaters are suitable for thin film structure schemes; The fields applicable to PTC heaters include the platform part of large satellites, small satellites, and nearby space vehicles.