Molecular Dynamics Simulation of Superheated Decomposition of Environmental Friendly C5F10O Mixture Gas

SF
6
is widely used in electrical industry because of its excellent insulation and arc extinguishing properties. However, the increasing use of SF
6
and its greenhouse effect cannot be ignored. In recent years, C5F
10
O has attracted much attention as a substitute gas, but the theoretical study of its decomposition properties is still in the initial stage. In this study, ReaxFF reaction field was used to explore the decomposition mechanism of C
5
F
10
O under overheating condition from the perspective of molecular dynamics. The experimental results show that the free radicals produced by direct bond fracture of C5F
10
O at high temperature mainly include CF
3
-, C
4
F
7
O-, F- and C
5
F
9
O-, and these free radicals compound or convert into fluorocarbon compounds, such as CF
4
and C
2
F
6
. With the increase of temperature, the number and types of decomposition products of C
5
F
10
O increased. By analyzing the evolution trend of C
5
F
10
O molecular decomposition number, we speculated that C
5
F
10
O molecule has a certain self-reducing ability. Based on the toxicity of decomposition products, the comparison of practical application, and the comprehensive economic and practical engineering application, this paper suggests that air be used as buffer gas of C
5
F
10
O compared with N
2
.