An anti-pollution flashover insulating coating with added micro-nano composite particles and its preparation process

Abstract

The invention discloses an anti-fouling flashover insulating coating added with micro-nano composite particles and a preparation process thereof. The weight percentage of each raw material is such as: fluorosilicone resin 36%-52%; micron-sized (10μm-200μm) composite particles: mainly fumed white carbon black 3%-5% CaCO3 0.5%-1.5%, CeO2 0.3%-1% and 0.5%-1.5% cerium fluoride composite particles and 2%-6% composite cross-linking agent for modification of micron-sized particles, 3%-8% composite reinforcing agent, nano-scale (25nm-75nm) composite particles: mainly There are nano-SiO2 0.3%-1%, nano-TiO2 2%-4%, nano-lanthanum oxide 0.2%-0.5%, and composite cross-linking agent for micron particle modification 2%-4%, surfactant 0.5% ‑1.5%, hexamethyldisilazane 3.5%‑7.5%, fluorosilicone resin defoamer 0.2%‑0.5%, catalyst 0.3%‑0.6%, composite titanate coupling agent 4%‑11%, composite Flame retardant 2%-6%, the rest is solvent. The preparation process of the anti-pollution flashover insulating coating in heavily polluted areas with the addition of micro-nano composite particles provided by the present invention adopts the method of segmented preparation and module combination, which can be industrialized and has excellent anti-pollution flashover performance, and can be widely used in heavily polluted areas. Power equipment for UHV transmission lines.

Description

Technical field: [0001] The invention belongs to the technical field of R&D and preparation of anti-pollution flashover insulating coatings in heavily polluted areas, in particular to an anti-pollution flashover insulating coating added with micro-nano composite particles and a preparation process. Background technique: [0002] Most of the anti-fouling flashover coatings currently used in heavily polluted areas are silicone rubber RTV anti-fouling flashover coatings. Silicone rubber RTV anti-fouling flashover coatings improve the performance of the matrix material by adding nano-fillers, such as electrical, optical, mechanical, and chemical properties. Modified by physical and chemical processes. Because of its hydrophobicity and water-repellent mobility, coating on the surface of insulators can inhibit the generation and development of leakage current and local arc, and can significantly improve the pollution flashover voltage in heavily polluted areas, thereby effectively...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor comprehensive performance of insulating coatings in the prior art, micron-sized particles and nano-sized particles cannot fully play their roles, poor mechanical properties, poor oil resistance, poor adhesion, short service life, etc., and anti-pollution flashover insulation of lines in heavily polluted areas Due to the limitations of high coating use and maintenance costs, the present invention provides a heavy-duty coating that adds micro-nano composite particles with excellent comprehensive performance, significantly improved water and oil repellency, good self-cleaning performance, long service life, and can be industrialized. Anti-pollution flashover insulating coating for dirty areas