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Novel ice-covering-proof coating and preparation method thereof

An anti-icing and coating technology, applied in coatings, chemical instruments and methods, and other chemical processes, etc., can solve problems such as short circuit of transmission lines, collapse of towers, and power outages

Inactive Publication Date: 2012-05-09
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of the economy, the demand and dependence on electricity are becoming more and more obvious, and at the same time higher and higher requirements are put forward for transmission lines. Therefore, the safe operation of transmission lines is particularly prominent for the development of the country. However, in recent years In the future, especially in the southern region of our country, due to the climate, the surface of the transmission line will be covered with ice, which will cause the transmission line to be broken and the tower to be collapsed. Therefore, the impact of climate change on the equipment will be Very serious, especially in the case of UHV and other important projects, because once the transmission line is covered with ice, it may cause a short circuit of the transmission line, which may cause a large-scale power outage, which will seriously affect the production and life of industry and agriculture. , therefore, how to prevent the icing phenomenon of transmission lines has very important economic and social significance

Method used

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  • Novel ice-covering-proof coating and preparation method thereof
  • Novel ice-covering-proof coating and preparation method thereof
  • Novel ice-covering-proof coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment example 1

[0018] Using the method of gas explosion spraying, the mixed substance of glass powder and polytetrafluoroethylene with a particle size of 10 μm is sent into the explosion gun as a coating material, wherein the mass content of glass powder is 50%, and the content of polytetrafluoroethylene is 50%. The mass content is 50%; the mixed gas of 0.05-0.2MPa oxygen and 0.05-0.15MPa acetylene enters the flow tube, is ignited by a spark plug, and explodes, so that the glass powder material reaches the wire with a spray distance of 100mm at a speed of 600m / s. By controlling the spraying process, the thickness of the coating is 15 μm, and the surface morphology is a micro-nano structure with small raised structures; the specific process parameters are shown in Table 1. The transmission line made as figure 1 with figure 2 As shown, the anti-icing coating 1 with a small convex structure is sprayed on the surface of the transmission line 2 .

[0019] Table 1. The first group of gas explos...

Embodiment example 2

[0022] A new type of anti-icing coating was prepared by supersonic flame spraying. The prepared mixture of glass powder with a mass content of 70% and polytetrafluoroethylene with a mass content of 30% was used as the coating material, and its particle size was 25μm, through the supersonic flame spraying (HVOF), make it at the oxygen flow rate of 400L / min, C 3 h 8 The flow rate is 30L / min, the spraying pressure is 0.4MPa, and the spraying distance is 100mm. By controlling the spraying process, the thickness of the coating is 20μm, and the surface morphology is a micro-nano structure with small convex structures.

Embodiment example 3

[0024] Using the method of gas explosion spraying, the mixed substance of glass powder and polytetrafluoroethylene with a particle size of 50 μm is sent into the explosion gun as a coating material, wherein the mass content of glass powder is 90%, and the content of polytetrafluoroethylene is 90%. The mass content is 10%; the mixed gas of 0.05-0.2MPa oxygen and 0.05-0.15MPa acetylene enters the flow tube, is ignited by a spark plug, and explodes, so that the glass powder material reaches the wire with a spray distance of 200mm at a speed of 800m / s. By controlling the spraying process, the thickness of the coating is 25 μm, and the surface morphology is a micro-nano structure with small raised structures; the specific process parameters are shown in Table 2.

[0025] Table 2. The second group of gas explosion spraying process parameters

[0026]

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Abstract

The invention relates to a novel ice-covering-proof coating and a preparation method thereof, belonging to the technical field of power transmission line protection. The ice-covering-proof coating is prepared from a composite material which has a particle size of 10-50 mu m and contains glass powder and polytetrafluoroethylene, wherein the mass percent of the glass powder is 50-90%, and the mass percent of the polytetrafluoroethylene is 10-50%; the thickness of the sprayed coating is 15-25 mu m, the coating with thickness of 5-10 mu m is in a small bulge structure, and a micro nanometer structure is formed on the surface of the small bulge structure; and the spraying method can be gas explosion spraying or supersonic flame spray coating. The surface of the coating has fine hydrophobicity, and can effectively inhibit the ice covering phenomenon of the power transmission line, thereby ensuring the stable operation of the power transmission line; the coating material has the characteristics of persistent low temperature resistance, high heat radiation performance, high ageing resistance and the like; and the preparation method based on gas explosion spraying or supersonic flame spray coating ensures the high bonding strength between the coating and a matrix and the low surface temperature and large surface roughness of the workpiece, thereby effectively avoiding the covering of ice and water.

Description

technical field [0001] The invention belongs to the technical field of transmission line protection, in particular to a novel anti-icing coating and a preparation method thereof. Background technique [0002] With the development of the economy, the demand and dependence on electricity are becoming more and more obvious, and at the same time higher and higher requirements are put forward for transmission lines. Therefore, the safe operation of transmission lines is particularly prominent for the development of the country. However, in recent years In the future, especially in the southern region of our country, due to the climate, the surface of the transmission line will be covered with ice, which will cause the transmission line to be broken and the tower to be collapsed. Therefore, the impact of climate change on the equipment will be Very serious, especially in the case of UHV and other important projects, because once the transmission line is covered with ice, it may ca...

Claims

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Application Information

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IPC IPC(8): C09D127/18C09D5/00C09D7/12C09K3/18
Inventor 张东博
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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