Insulating Material for Modifying Electric Field Under Pulsed Voltage Exposure

The article focuses on improving the reliability and durability of insulating materials used in electrode systems of electric-discharge technologies. For this purpose we have conducted experiments on modification of silicone rubber compound IRP 1338 using ceramic fillers such as barium titanate, and barium titanate mixed in a planetary mill with carbon black in order to increase dielectric permittivity to specified values. The results show that the addition of these modifiers significantly improves dielectric permittivity of the materials, making them promising for application in these technologies. We have also conducted comparative studies on insulation without modifying additives and modified insulation under impulse voltage exposure. The obtained results allow us to determine how dielectric permittivity of the modified sample contributes to more uniform distribution of electric field and reduction of local overvoltages under impulse exposure.