Study on the thermal decomposition characteristics of C 4 F 7 N–CO 2 mixture as eco-friendly gas-insulating medium

The authors explored the thermal decomposition characteristics of perfluoroisobutyronitrile–carbon dioxide (C4F7N–CO2) gas mixture as eco-friendly dielectric medium. The main by-products and decomposition mechanism of C4F7N–CO2 gas mixture under different temperature and gas pressure conditions were revealed and analysed. It was found that the thermal decomposition of 6%C4F7N–94%CO2 gas mixture st...