Long-term anti-pollution-flashover paint and preparation thereof

An anti-pollution flashover coating, a long-term technology, applied in the direction of coating, can solve the problems of difficult to guarantee quality, need power outage time, short service life, etc. Excellent performance and weather resistance

Inactive Publication Date: 2008-10-01
武汉华瑞防雷科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of synthetic insulators is also an effective anti-pollution flashover measure, but due to the limitations of product structure design, its quality is difficult to guarantee, the failure rate is high, and its lightning protection performance is lower than that of porcelain insulators when the string length is the same.
Operation experience shows that climbing adjustment is an effective means of anti-fouling flashover, but it is limited by the structure of the tower; cleaning can ensure the cleanliness of the external insulation, but the workload is too large and requires power outage time; the early anti-fouling flashover materials are silicone oil and silicon Grease, the disadvantage is that the service life is short, usually only half a year

Method used

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  • Long-term anti-pollution-flashover paint and preparation thereof
  • Long-term anti-pollution-flashover paint and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Aluminum hydroxide Al(OH) 3 Mix 3 parts with 8 parts of methyl silicone oil evenly, and then use a conical mill to grind to a fineness ≤ 5 μm, then add 100 parts of silicone rubber, 6.5 parts of meteorological silica, 5 parts of plasticizer, and 100 parts of trichloroethane, 0.6 parts of crosslinking agent, 3 coloring agents; put the mixed material into a high-speed dispersion tank protected by nitrogen, adjust the rotating speed to 3000r / min, disperse for 15 minutes, and filter the product with 200 mesh gauze to obtain the coating of the present invention.

Embodiment 2

[0021] Aluminum hydroxide Al(OH) 3 Mix 6 parts with 10 parts of methyl silicone oil evenly, then use a conical mill to grind to a fineness ≤ 5 μm, then add 100 parts of silicone rubber, 9 parts of meteorological silica, 8 parts of plasticizer, 120 parts of xylene, and crosslink 0.9 parts of coloring agent, coloring agent 3; Put the mixed material into the high-speed dispersion tank protected by nitrogen, adjust the rotating speed to 3000r / min, disperse for 15 minutes, and filter the product with 200 mesh gauze to obtain the coating of the present invention.

Embodiment 3

[0023] Aluminum hydroxide Al(OH) 3 Mix 5 parts with 9 parts of methyl silicone oil evenly, then grind to fineness ≤ 5 μm with a conical mill, then add 100 parts of silicone rubber, 8 parts of meteorological silica, 6 parts of plasticizer, 120 parts of ethanol, crosslinking agent 0.8 parts, coloring agent 3; put the mixed material into the high-speed dispersion tank protected by nitrogen, adjust the rotating speed to 3000r / min, disperse for 20 minutes, and filter the product with 200 mesh gauze to obtain the coating of the present invention.

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Abstract

The present invention provides a coating, specifically a long-life prevent dirt flash coating materials widely used for external insulation surface of the electrical equipment, composed of following components by weight account: silicone rubber 100, weather white carbon black 6.5-9, Al(OH)3 3-6, plasticizer 5-8, solvent 100-120, crosslinking agent 0.6-0.9, methyl silicone oil 8-10. The invention has advantages of excellent hydrophobicity, long-life corrosion resistance and weatherability, and excellent anti-dist flash characteristic, having no peeling, no crack, no falling, bearing the step when the repairing worker repairs, the invention greatly improves equipment anti-dist flash voltage, slat density is 0.1mg/cm<2>; under the condition of gray scale of 1.0mg/cm<2>, the anti-dist flash voltage is increased more than 200%, thus, the coating is widely used for the external insulation surface of the electrical equipment, effectively enhancing the safety credibility operation level of the electrical equipment.

Description

technical field [0001] The invention relates to a coating, specifically a long-term anti-pollution flashover that is widely used on the outer insulation surface of electrical equipment, can greatly increase the pollution flashover voltage of the outer insulation of electrical equipment, and effectively improve the safe and reliable operation level of electrical equipment coating. Background technique [0002] Air pollution can cause pollution flashover of electrical equipment. Pollution flashover is caused by air pollution on the insulating surface. After the pollution, the electrolyte components in the polluted layer will be fully dissolved in water under heavy fog, condensation, drizzle and other meteorological conditions, forming a conductive path on the insulating surface, greatly reducing the insulating strength. Surface flashover of insulation caused by normal operating voltage. In severe cases, it will endanger the safe operation of the power grid and cause major ec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D5/00
Inventor 杜忠东谭进张良钧徐勇袁明仁查宜萍付念先张敬国田强郑志强杨杰刘熙
Owner 武汉华瑞防雷科技股份有限公司
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