Distribution of surface material structure of composite insulators

The outer insulating surface of the composite insulator is formed by putting the mixed outer insulating material compound into a fixed-shape mold cavity, and vulcanizing it by heating and pressure. The surface material structure distribution is different from the internal material structure distribution. The layer of silica reinforcing agent particles is randomly distributed. Due to the intermediate action of the hydroxyl group on the outer surface of the silica reinforcing agent and the anti-structuring agent hydroxy silicone oil, there is a considerable thickness of siloxane on the surface of the silica reinforcing agent particles. Molecules, there are active segments of siloxane molecules with normal conformation on the outer surface and free-state ends of siloxane molecules capped by a large number of organic groups. For the randomly distributed particle size of the surface layer, aluminum hydroxide and a small amount of other fillers are correspondingly large. When the agent particles are used, the surface of the two-dimensional linear siloxane molecules and the intermolecular cross-linking points are arranged in an adhesion orientation, and it is impossible to have molecular active segments and very few free-state ends of the siloxane molecules. Due to the presence of aluminum hydroxide and a small amount of other filler particles on the surface of the corresponding particularly large particle size, due to factors such as the heating of the shaping mold, the pressure vulcanization process and the fluidity of the colloidal siloxane molecules, the molding It is impossible for particles to bulge on the surface of the outer edge material, and the top of the particles is most likely to be parallel to the surface of the silicone rubber material.