Impact of Ultraviolet Irradiation on Space Charge Dynamics and Surface Properties of Epoxy Micro-N ano Composites
- Resource Type
- Conference
- Authors
- Babu, Myneni Sukesh; Sarathi, Ramanujam; Imai, Takahiro
- Source
- 2020 International Symposium on Electrical Insulating Materials (ISEIM) Electrical Insulating Materials (ISEIM), 2020 International Symposium on. :391-394 Sep, 2020
- Subject
- Engineered Materials, Dielectrics and Plasmas
Power, Energy and Industry Applications
Signal Processing and Analysis
Space charge
Surface roughness
Rough surfaces
Aging
Electric potential
Plasma temperature
Electric fields
Epoxy
silica
UV radiation
space charge
surface potential
LIBS
- Language
Epoxy micro-nano composites reinforced with silica micro filler and ion trapping nanoparticles were subjected to ultraviolet (UV) radiation for a period of 240 and 480 hours respectively. The average value of absolute space charge density increases whereas mean life time of charge decay decreases with UV ageing time. The surface potential decay characteristics of UV irradiated specimens were modelled with a double exponential function and it is noticed that the initial surface potential marginally decreases and decay rate increases with exposure to UV radiation. The increase in carrier mobility of the epoxy specimens is correlated with the increase in the density of shallow traps with UV irradiation, that occur because of the radiation induced structural degradation. The surface properties such as mean surface roughness and surface hardness tend to deteriorate after exposure to UV radiation.