Preparation method of anti-fouling composite insulator shed rubber

Abstract

The invention relates to a preparation method of anti-fouling composite insulator shed rubber. The method comprises the following steps: (1) prefabricating a super-hydrophobic mixed nano powder material, namely adding nano-silica, nanometer titania, nano calcium phosphate and nano zinc oxide to a fluidized bed reactor, carrying out dewatering and drying, introducing silazane and alkyl siloxane into the fluidized bed reactor in an airflow form, carrying out fluidization reaction, vacuumizing and removing volatile matters to prepare a mixed nano powder material; and (2) refining the rubber for a shed, namely adding fluorinated polyimide, fluorinated silicone rubber and methyl vinyl silicone rubber to a rubber mixing mill, mixing and then adding the super-hydrophobic mixed nano powder for refining, adding aluminum oxide, barium oxide and zinc oxide superfine powder for refining; adding ferrocene, aluminum chloride, titanium chloride, tetrakis dimethyl amino hafnium and ammonium iodide and mixing at constant temperature; adding a peroxide vulcanization initiator, mixing at the constant temperature until an even effect is achieved; and transferring the material to a twin-screw extruder and extruding to prepare the shed rubber.

Description

technical field [0001] The invention belongs to the field of composite insulators, and in particular relates to a preparation method of a pollution-resistant composite insulator sheath rubber. Background technique [0002] With the development of the times, composite insulators have been continuously improved and improved, and the scale of using composite insulators in power grids is increasing. In my country, composite insulators have been applied to various voltage levels of high voltage, ultra-high voltage and ultra-high voltage in the power industry. The increase in mechanical loads on insulators, the diversity of operating environments, and the aggravation of air pollution have exposed the performance of composite insulators during use. Defects. Composite insulators are more polluted than porcelain insulators in dirty operating environments, which offsets the advantages of certain hydrophobicity on the surface, and even causes hydrophilic, scaling, freezing, hydrolysis,...

AI Technical Summary

Problems solved by technology

One is that the preparation process of complex micro-nano materials limits its production scale; the other is the combination of the surface and the substrate and certain durability; the third is that the high cost of preparation limits the practical application