An insulator with a textured surface of holes and microgrooves and a preparation method thereof

Abstract

The invention discloses an insulator which possesses a hole microgroove texturing surface and is applied to the high voltage insulating material technology field and a manufacturing method thereof. In the prior art, a surface breakdown voltage resistance ability is poor; reliability is not high and repeatability is poor, which is difficult to satisfy a vacuum insulation requirement of a high voltage apparatus; and there are other technical problems. By using the insulator and the method of the invention, the above problems are mainly solved. The insulator comprises an insulator body. The insulator body is made of a polymer material and a surface is woven with periodically parallel V-shaped microgroove arrays. Microgroove surfaces are uniformly distributed with holes with a micron order size. The microgrooves are etched by a laser. And the holes are formed through ablation by the laser. The manufacturing method comprises the following steps of using laser grooving to etch the microgroove arrays on an insulator body surface; and using laser ablation so as to form the holes on the microgroove surfaces. The insulator and the method can be applied to the vacuum high-voltage insulation device field and the high-voltage insulation fields under other environments.

Description

technical field

[0001] The invention belongs to the technical field of high-voltage electrical insulating materials, and in particular relates to an insulator with a textured surface of hole microgrooves and a preparation method thereof. Background technique

[0002] An insulator is a component used for electrical insulation and mechanical fixing. Its function is to connect conductors with different potentials to each other mechanically and to insulate them electrically. In vacuum high-voltage electrical equipment, with the increase of operating voltage, the vacuum surface flashover phenomenon that occurs on the surface of insulators has become a bottleneck factor that limits the development of equipment performance. The flashover along the surface makes the withstand voltage of the insulator far lower than its volume breakdown voltage, and much lower than the vacuum gap at the same distance. With the increasingly prominent role of high-power pulse technology in the nationa...

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