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Anticorrosion conductive coating for metal grounding network and application method thereof

A metal grounding, anti-corrosion and conductive technology, used in conductive coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of high price, limited application, no specification of coating properties and types of conductive rod performance, etc., and achieves strong applicability. , the effect of less pollution

Inactive Publication Date: 2011-11-02
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Application number is that the Chinese patent of 200920116866.3 provides a kind of preparation method of anti-corrosion conductive rod, the disadvantage is that the properties and types of coating and the performance of conductive rod are not specified; the Chinese invention patent with application number 03125237.0 provides a kind of conductive coating, which The disadvantage is that nano-carbon is used as conductive filler, which is expensive and limited in application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Steel structure grounding grid anti-corrosion conductive coating and its use.

[0017] The mass percentages of each component in the coating are: epoxy resin (E10) 52%, flake conductive graphite 35%, polyethylene 3%, polyvinyl butyral 5%, additive 5% (here should be specific, below The same); paint preparation: crush and sieve each component to 200 meshes, and use a ball mill to grind evenly to obtain a powder paint. How to use the paint: According to the specific structure of the grounding grid, carry out blanking and welding forming (it should be specific to the material used), remove welding slag, burrs and chamfer the edges and corners; use degreasing, rust removal and phytate treatment to make the surface Form a layer of phytate conversion film; preheat the metal grounding grid to 280°C, apply the coating by fluidized bed dipping method, and heat at 220°C for 25 minutes to cause the coating to undergo a curing reaction to form a coating. The thickness of the coatin...

Embodiment 2

[0019] Aluminum alloy ground grid anti-corrosion conductive coating and its use.

[0020] The mass percentages of each component in the coating are: epoxy resin (E14) 30%, epoxy resin (E20) 26%, flake conductive graphite 30%, polyvinyl chloride 7%, polyvinyl butyral 3%, Additive 4%; paint preparation: each component is dissolved in the mixed solvent in turn, and the solid content of the paint is controlled to be 50%. How to use the paint: apply compressed air spraying method, increase the thickness of the coating by spraying multiple times, and heat at 200°C for 30 minutes to make the paint cure and form a coating. The thickness of the coating is 230-250um. Process flow: aluminum grounding grid → degreasing → water washing → pickling → water washing → phytate treatment → (compressed air spraying → desolventization) n → heating → cooling → product; n is the number of spraying. The preparation and surface treatment of the ground grid are the same as in Example 1.

Embodiment 3

[0022] Copper and copper alloy ground grid anti-corrosion conductive coating and its use.

[0023] The mass percentages of each component in the coating are: epoxy resin (E8) 58%, flake conductive graphite 28%, polypropylene 4%, polyvinyl butyral 6%, additive 4%; Each component is pulverized respectively To 200 mesh, use a ball mill to grind evenly to obtain a powder coating; coating application method: use powder electrostatic spray coating, heat at 220°C for 15 minutes, and control the coating thickness to 50-60um by adjusting the voltage and air pressure. Process flow: copper grounding grid → degreasing → water washing → pickling → water washing → phytate treatment → electrostatic spraying → heating → cooling → product; the preparation and surface treatment of the grounding grid are the same as in Example 1.

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Abstract

The invention discloses an anticorrosion conductive coating for a metal grounding network and an application method thereof. The conductive coating is characterized by comprising the following components in mass fraction: 40-50 of epoxy resin, 20-30 of flaky conductive graphite, 8-15 of plasticizers and 3-5 of additive, wherein the plasticizers are at least one of polrvinyl chloride, polypropylene, polyethylene and polyvinyl butyral, the epoxy resin is at least one of E8, E10, E12, E14 and E 20, the additive comprises sebacic dihydrazide and dicyandiamide in the mass ratio of 1:4; the coating can be prepared into a powdery coating and a solvent type coating, and the thickness of a coating layer is 50-250 mum; the coating does not have cross-linking reaction at room temperature and can have cross-linking reaction to form a film only after being heated; the solvent type coating can be of a single-component type and can be stored for a long time; and the coating has thermoplasticity and can be coated and heated many times till a required thickness is reached.

Description

technical field [0001] The invention belongs to the field of anticorrosion of metal structures in electric power systems, and in particular relates to an anticorrosion conductive coating for metal grounding grids and an application method thereof. technical background [0002] In recent years, with the increase of power capacity and voltage level in our country, power operation safety accidents caused by grounding grid corrosion often occur. The direct economic losses caused by the corrosion, burning and reconstruction of AC grounding grid are huge. The area and indirect losses caused by long-term power outages are also incalculable. In order to ensure the normal operation and safety of the power system, electrical equipment in power plants and substations must be reliably grounded. At present, grounding products include copper, steel, copper-clad steel, galvanized steel, grounding resistance reducing agent, grounding module, All grounding products, such as ionic grounding ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D163/02C09D5/24C09D5/08B05D7/24B05D3/00
Inventor 管从胜金丽勇
Owner STATE GRID CORP OF CHINA
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