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Anti-icing coating on UHV line surface

An anti-icing and ultra-high pressure technology, applied in coatings and other directions, can solve the problems of inability to achieve anti-icing, low surface energy, pollution flashover, etc., and achieve excellent anti-icing ability, reduced contact area, and strong degradation ability. Effect

Active Publication Date: 2018-05-11
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Superhydrophobic coatings have excellent hydrophobicity and low surface energy without additional energy, which helps to limit ice damage and achieve anti-icing effects, but based on the surface structure and chemical composition of the coating itself, and Cannot completely prevent transmission lines from icing
The electrothermal coating is to add various conductive particles to the film-forming substance of the coating. When this electrothermal coating is applied to the insulator in operation, under the action of the voltage difference between the two ends of the insulator, there will be a certain Leakage current flows through the coating, thereby generating a certain amount of Joule heat in the coating, so that the surface temperature of the insulator is always higher than the freezing temperature of water droplets, thereby achieving the purpose of anti-icing. However, the surface of ordinary electrothermal coatings is poor in hydrophobicity and easy to accumulate Pollution may easily cause pollution flashover accidents in rainy and snowy weather
The photothermal anti-icing coating is mainly to add light-absorbing and heat-generating substances to the coating, so that it has the performance of converting light energy (mainly sunlight) into heat, and plays the role of anti-icing. However, in rainy and snowy weather, there is no In the case of sunlight, the anti-icing effect cannot be achieved

Method used

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  • Anti-icing coating on UHV line surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An anti-icing coating on the surface of UHV lines, comprising the following raw materials in parts by weight:

[0025] 45 parts of fluorosilicone resin, 10 parts of functional nano-ion, nano-TiO 2 8 parts, nano-SiO 2 12 parts, emulsifier nonylphenol polyoxyethylene ether is 0.5 parts, defoamer EFKA-2722 is 1 part, leveling agent BYK-306 is 0.3 parts, silane coupling agent vinyltriethoxysilane is 1 part , the solvent ethyl acetate is 30 parts.

[0026] Among them, the functional nano-ion is SiO 2 Coated carbon nanotube composite nanomaterials, SiO 2 The preparation of coated carbon nanotube composite nanomaterial comprises the following steps:

[0027] Step 1, adding carbon nanotubes into mixed acid and ultrasonically dispersing for 8 hours, wherein the mixed acid is concentrated H 2 SO 4 and concentrated HNO 3 Mixed at a weight ratio of 3:1, the weight ratio of carbon nanotubes to mixed acid is 1:50, after ultrasonic dispersion, add deionized water for dilution...

Embodiment 2

[0035] An anti-icing coating on the surface of UHV lines, comprising the following raw materials in parts by weight:

[0036] 48 parts of fluorosilicone resin, 9 parts of functional nano-ion, nano-TiO 2 7 parts, nano-SiO 2 11 parts, emulsifier alkylphenol polyoxyethylene ether is 0.6 parts, defoamer EFKA-2720 is 0.9 parts, leveling agent BYK-333 is 0.4 parts, silane coupling agent aminopropyl triethoxysilane is 1.2 parts Parts, solvent butyl acetate is 28 parts.

[0037] Among them, the functional nano-ion is SiO 2 Coated carbon nanotube composite nanomaterials, SiO 2 The preparation of coated carbon nanotube composite nanomaterial comprises the following steps:

[0038] Step 1, adding carbon nanotubes into mixed acid and ultrasonically dispersing for 9 hours, wherein the mixed acid is concentrated H 2 SO 4 and concentrated HNO 3 It is mixed according to the weight ratio of 4:1. The weight ratio of carbon nanotubes and mixed acid is 1:52. After ultrasonic dispersion, ...

Embodiment 3

[0046] An anti-icing coating on the surface of UHV lines, comprising the following raw materials in parts by weight:

[0047] 50 parts of fluorosilicone resin, 8 parts of functional nano-ion, nano-TiO 2 6 parts, nano-SiO 2 10 parts, emulsifier fatty alcohol polyoxyethylene ether is 0.7 parts, defoamer EFKA-3777 is 0.8 parts, leveling agent BYK-306 is 0.5 parts, silane coupling agent γ-aminopropyl trimethoxysilane is 1.4 parts Parts, solvent methyl nylon acid is 26 parts.

[0048] Among them, the functional nano-ion is SiO 2 Coated carbon nanotube composite nanomaterials, SiO 2 The preparation of coated carbon nanotube composite nanomaterial comprises the following steps:

[0049] Step 1, adding carbon nanotubes into mixed acid and ultrasonically dispersing for 10 h, wherein the mixed acid is concentrated H 2 SO 4 and concentrated HNO 3 It is mixed according to the weight ratio of 3.5:1. The weight ratio of carbon nanotubes and mixed acid is 1:54. After ultrasonic dispe...

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Abstract

The invention discloses an anti-icing coating on the surface of UHV lines, which comprises the following raw materials in parts by weight: 45-60 parts of fluorosilicone resin, 5-10 parts of functional nano-ions, 5-8 parts of TiO2, and 8-12 parts of nano-SiO2 0.5-1 part of emulsifier, 0.5-1 part of defoamer, 0.3-1 part of leveling agent, 1-2 parts of silane coupling agent, 20-30 parts of solvent. The anti-icing coating on the UHV line surface prepared by the present invention has a contact angle with water of 128° to 168°; The vertical adhesion is reduced by 76% to 91.5%; the anti-icing coating on the surface of UHV lines of the present invention has better electrothermal effect, the average temperature rise is 10.8 to 16.5°C, and it also has good acid and alkali resistance and insulation performance.

Description

technical field [0001] The invention relates to an anti-icing coating, in particular to an anti-icing coating on the surface of a UHV line. Background technique [0002] UHV power transmission has the advantages of ultra-long distance, ultra-large capacity and low loss of energy consumption. The construction of UHV power grid can not only meet the growing demand for electricity, but also promote the intensive development and efficient utilization of resources, relieve environmental pressure, and save land resources. my country's UHV transmission lines stretch for thousands of kilometers and pass through a large number of mountains and hills. Mountains and hills are prone to ice disaster accidents, and it is difficult to repair after ice disaster accidents, which bring huge direct and indirect economic losses to the power system. Therefore, it is very important to research and develop anti-icing and deicing methods, but general deicing methods such as thermal deicing and mech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/08C09D7/61C09D7/62C09D7/63
Inventor 张利刘勇王敏姜伟
Owner STATE GRID CORP OF CHINA
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