Insulator based on 3D printing and preparation method and application thereof

The invention discloses an insulator based on 3D printing and a preparation method and application thereof, and belongs to the technical field of high-voltage insulation. The insulator is prepared from an insulating medium through 3D printing, a plurality of through holes are formed in the first surface of the insulator, a cavity is formed in the insulator, the through holes communicate with the cavity, and the first surface is the surface along an electric field. A plurality of through holes are formed in the surface of the insulator along an electric field, electrons penetrate through the through holes to enter the cavity in the flashover process, and electrons excited by the electrons entering the cavity on the bottom surface of the cavity are difficult to penetrate through the through holes to return to the surface of the insulator. Therefore, the insulator has a better surface secondary electron collapse inhibition effect and higher vacuum surface electric strength. 本申请公开了一种基于3D打印的绝缘子及其制备方法和应用，属于高电压绝缘技术领