화학공학소재연구정보센터
Industrial & Engineering Chemistry Research, Vol.58, No.48, 21913-21920, 2019
Synthesis and Dielectric Properties of Trifluoromethanesulfonyl Fluoride: An Alternative Gas to SF6
Sulfur hexafluoride (SF6) gas has been used in large-scale electrical equipment, because of its excellent high-voltage dielectric strength. However, SF6 has been identified as a greenhouse gas, because of its high global warming potential (GWP) and extended lifetime in the atmosphere. Based on theoretical calculations, trifluoromethanesulfonyl fluoride (CF3SO2F) is a relatively eco-friendly gas with a lower GWP than that of SF6, and the electrical performance of CF3SO2F is also superior to that of SF6. A new procedure to synthesize CF3SO2F gas is presented for application in high -voltage insulation. An AC breakdown voltage test involved mixing CF3SO2F with CO, and N-2 to obtain insulation data. The stability of CF3SO2F was shown by self-recoverability tests and decomposition product analysis after breakdown, and the results show no harmful or flammable and explosive byproduct that would have a negative climate impact. These results demonstrate that CF3SO2F gas has great potential as a new insulating gas with great dielectric strength.