Enhancement of Hydrophobic Properties of Epoxy Resin by Large Area Dielectric Barrier Discharge Plasma Treatment Device

UHV transmission has become an important way to solve the uneven distribution of energy. Insulation equipment with base material of epoxy resin is prone to wet flashover in rain, fog and snow, which leads to insulation aging. Improving the hydrophobicity of materials is the main means to promote the wet flashover. The existing method such as hydrophobic coating method has the disadvantages of waste liquor and weak mechanical properties. Atmospheric pressure plasma can deposit hydrophobic films with good mechanical properties, but it is more limited to small scale modification. Therefore, this paper designed a dielectric barrier discharge (DBD) device with water-metal mesh plate electrode. Using HMDSO as the precursor, hydrophobic modification of epoxy resin is carried out under atmospheric pressure He atmosphere. The results showed that the water contact Angle of epoxy resin is increased by 30%, and the hydrophobic film showed high uniformity.