TY - JOUR
T1 - IMPROVING SURFACE FLASHOVER VOLTAGE OF EPOXY UNDER ECO-FRIENDLY C5F10O/CO2 GAS MIXTURES BY ULTRAVIOLET IRRADIATION
AU - Li, Shengtao
AU - Zhao, Jiuhui
AU - Li, Mingru
AU - Li, Bingnan
AU - Gao, Yafang
AU - Feng, Yang
N1 - Publisher Copyright:
© The Institution of Engineering & Technology 2023.
PY - 2023
Y1 - 2023
N2 - As an environmentally friendly alternative gas for SF6, C5F10O/CO2 gas mixtures have shown great potentials for applications in gas-insulated equipment because of its extremely low global warning potential (GWP). However, the research on the surface flashover of epoxy under C5F10O/CO2 gas mixtures is still lacking. In this paper, we studied the effect of surface treatment on the surface flashover performance of epoxy resin under C5F10O/CO2 gas mixtures. Epoxy resin/Al2O3 composites were prepared and then irradiated by ultraviolet for 6 h in air. Infrared spectrum, water contact angle, surface potential decay, surface resistivity and DC surface flashover voltages of the pristine and modified samples in SF6 and C5F10O/CO2 gas mixtures were determined. The results showed that that the flashover voltage in both SF6 and C5F10O/CO2 mixtures was improved obviously after surface treatment. It was found that the ultraviolet irradiation increased the energy level and density of both shallow and deep surface traps, which resulted in strong trapping effect and finally increased the flashover voltage. Our work provides an effective way to improve the surface flashover voltage of epoxy under C5F10O/CO2 gas mixtures by ultraviolet irradiation.
AB - As an environmentally friendly alternative gas for SF6, C5F10O/CO2 gas mixtures have shown great potentials for applications in gas-insulated equipment because of its extremely low global warning potential (GWP). However, the research on the surface flashover of epoxy under C5F10O/CO2 gas mixtures is still lacking. In this paper, we studied the effect of surface treatment on the surface flashover performance of epoxy resin under C5F10O/CO2 gas mixtures. Epoxy resin/Al2O3 composites were prepared and then irradiated by ultraviolet for 6 h in air. Infrared spectrum, water contact angle, surface potential decay, surface resistivity and DC surface flashover voltages of the pristine and modified samples in SF6 and C5F10O/CO2 gas mixtures were determined. The results showed that that the flashover voltage in both SF6 and C5F10O/CO2 mixtures was improved obviously after surface treatment. It was found that the ultraviolet irradiation increased the energy level and density of both shallow and deep surface traps, which resulted in strong trapping effect and finally increased the flashover voltage. Our work provides an effective way to improve the surface flashover voltage of epoxy under C5F10O/CO2 gas mixtures by ultraviolet irradiation.
KW - ECO-FRIENDLY GAS
KW - EPOXY RESIN
KW - SURFACE FLASHOVER
KW - SURFACE TRAP
KW - ULTRAVIOLET IRRADIATION
UR - https://www.scopus.com/pages/publications/85203307860
U2 - 10.1049/icp.2024.0428
DO - 10.1049/icp.2024.0428
M3 - 会议文章
AN - SCOPUS:85203307860
SN - 2732-4494
VL - 2023
SP - 63
EP - 67
JO - IET Conference Proceedings
JF - IET Conference Proceedings
IS - 46
T2 - 23rd International Symposium on High Voltage Engineering, ISH 2023
Y2 - 28 August 2023 through 1 September 2023
ER -