Disc insulator surface silicone rubber coating layer removing agent and preparation method and application thereof

Abstract

The invention provides a disc-type insulator surface silicone rubber coating layer removing agent and a preparation method and application thereof, wherein the removing agent can rapidly and stronglyremove a coating layer at room temperature without damaging an insulator. The removing agent comprises the components in percentage by mass: 2%-4% of tetramethylammonium hydroxide, 10%-15% of ethanol,8%-15% of diethylamine, 35%-45% of tetrahydrofuran, 5%-12% of ethylene glycol phenyl ether, 5%-12% of N-octyl pyrrolidone and 3%-5% of a penetrating agent; or 2%-4% of potassium hydroxide, 10%-15% ofethanol, 8%-15% of diethylamine, 35%-45% of butanone, 5%-12% of dimethyl sulfoxide, 5%-12% of butyronitrile and 3%-5% of penetrant; or 2%-4% of sodium ethoxide, 10%-15% of ethyl alcohol, 8%-15% of diethylamine, 35%-45% of butanone, 5%-12% of ethylene glycol phenyl ether, 5%-12% of N-octyl pyrrolidone and 3%-5% of a penetrant.

Description

technical field [0001] The invention relates to a removing agent for quickly and powerfully removing the silicone rubber coating on the surface of waste disc insulators at room temperature, a preparation method and application thereof. [0002] technical background [0003] Disk insulators are an important component of transmission lines, mainly used for hanging and fixing transmission lines, and at the same time insulating transmission lines from iron towers. Traditional glass or ceramic insulators have a long service life, but their anti-pollution flashover performance is difficult to meet the insulation requirements of UHV or EHV power transmission and transformation circuits. Usually, the surface of glass or ceramic insulators is coated with room temperature vulcanized silicone rubber (RTV ) coating to enhance its antifouling flashover capability. RTV coating not only has good self-cleaning performance, which can effectively prevent dust and other solid particles from ac...

AI Technical Summary

Problems solved by technology

[0005] There are two defects in the first treatment method: one is that due to the aging of the RTV coating and the existence of surface contamination, the bonding strength between the new and old coatings is not enough, and it is difficult to restore the RTV coating to the first coating The service life and anti-fouling flashover ability of RTV coating; the second is that the roughness of the coating surface increases due to the aging of the RTV coating and surface pollution, and the surface roughness is multiplied with the increase in the number of recoatings. Surface self-cleaning performance and anti-fouling flashover are reduced

However, the good thermal and chemical stability of silicone rubber also hinders the recycling of waste silicone rubber. Researchers at home and abroad have done a lot of research work on the degradation and recycling of waste silicone rubber.

The degradation and recovery of silicone rubber has been explored from multiple angles such as acid-catalyzed cracking, alkali-catalyzed cracking, and high-temperature cracking. Although siloxane monomers and fillers in silicone rubber can be partially recovered, the treatment temperature is high and the time is long. , great harm to recycling equipment, low reaction safety factor and other disadvantages

The degradation temperature commonly used in existing research is above 110°C, the processing time is at least 6 hours, and the degradation and recovery efficiency is low; in addition, the addition of acid catalysis will cause equipment corrosion, and alkali catalysis is prone to local overheating, which may cause explosions and poor safety.

At present, there is no technical solution for rapid and efficient degradation of silicone rubber

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