Aramid fiber / epoxy composite material interface design and insulating property strengthening method and application

Abstract

The invention belongs to the technical field of high-voltage insulation, and particularly discloses an aramid fiber / epoxy composite material interface design and insulating property strengthening method and application, and the method comprises the following steps: carrying out direct fluorination pretreatment on the surface of aramid fiber cloth; soaking the aramid fiber cloth subjected to fluorination pretreatment in the aramid nanofiber solution; performing drying treatment; the modified aramid fiber cloth is laid and placed in a composite material forming mold, and the modified aramid fiber cloth is fully impregnated with epoxy resin and a curing agent based on a vacuum pressure impregnation technology and cured at a high temperature. According to the aramid fiber / epoxy composite material interface design and insulating property strengthening method and application, a micro-nano multi-scale interface is constructed through bridging of the micron-sized fluorinated layer and the nanofiber layer, the problem of insulating property improvement under the coupling effect of large mechanical stress and high electric field is solved in a breakthrough mode, the manufacturing process is simple, the cost is low, and the method is suitable for industrial production. And large-batch preparation can be realized, and a new thought is provided for insulation design of power equipment in the high-voltage insulation field.

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