▎ 摘　　要

NOVELTY - Preparing self-healing composite insulator involves taking insulating fiber bundles to make a three-dimensional skeleton that matches the shape of the insulator, preparing resin glue and self-healing microspheres. The self-healing microspheres are dispersed and wound on the surface of the three-dimensional framework at a density of 4/10 cm2, and the resin glue is placed in an evacuated container and degassed at a vacuum degree of 0-0.5 megaPascal for 20-30 minutes to get the mixture, preheated the casting mold to 60 degrees C, heated the mixture to 40-60 degrees C and stored at a constant temperature for later use, and placed the three-dimensional skeleton at the center of the mold, slowly injected the mixture into the casting mold, applied a suitable strength magnetic field outside the mold for the three-dimensional skeleton to guide and extended the self-healing microspheres, cooled and demolded to take out the preliminary insulator. USE - Method for preparing self-healing composite insulator. ADVANTAGE - The method improves the repairing effect, provides insulation and mechanical protection in certain time. DETAILED DESCRIPTION - Preparing self-healing composite insulator involves taking insulating fiber bundles to make a three-dimensional skeleton that matches the shape of the insulator, preparing resin glue and self-healing microspheres. The self-healing microspheres are dispersed and wound on the surface of the three-dimensional framework at a density of 4/10 cm2, and the resin glue is placed in an evacuated container and degassed at a vacuum degree of 0-0.5 megaPascal for 20-30 minutes to get the mixture, preheated the casting mold to 60 degrees C, heated the mixture to 40-60 degrees C and stored at a constant temperature for later use, and placed the three-dimensional skeleton at the center of the mold, slowly injected the mixture into the casting mold, applied a suitable strength magnetic field outside the mold for the three-dimensional skeleton to guide and extended the self-healing microspheres, cooled and demolded to take out the preliminary insulator. The surface is coated with a layer of titanium phosphate nano self-cleaning coating to obtain product.