A kind of super-hydrophobic anti-pollution flashover coating that can be used on the surface of rtv/sr material and preparation method thereof

A super-hydrophobic, anti-fouling flashover technology, applied in antifouling/underwater coatings, devices for coating liquid on the surface, coatings, etc., can solve the problems of insufficient hydrophobicity and dust accumulation, and achieve improved antifouling flashover ability, comprehensive performance, and the effect of improving outdoor aging resistance

Active Publication Date: 2022-07-29
武汉疏能新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Based on the deficiencies in the prior art above, the technical problem solved by the present invention is to provide a superhydrophobic antifouling flashover coating and a preparation method thereof that can be used on the surface of RTV / SR materials, and the superhydrophobic antifouling flashover coating can be directly applied to Recoating the surface of RTV or PRTV or silicone rubber (SR) materials saves time and is convenient, and solves the problems of insufficient hydrophobicity and dust accumulation of RTV silicone rubber materials, making the surface not only superhydrophobic, super self-cleaning, but also Anti-condensation and delayed freezing state effects; and greatly improved the outdoor aging resistance of the transportation line, prolonging the service life

Method used

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  • A kind of super-hydrophobic anti-pollution flashover coating that can be used on the surface of rtv/sr material and preparation method thereof
  • A kind of super-hydrophobic anti-pollution flashover coating that can be used on the surface of rtv/sr material and preparation method thereof
  • A kind of super-hydrophobic anti-pollution flashover coating that can be used on the surface of rtv/sr material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A super-hydrophobic self-cleaning ceramic insulator is used for 110KV transmission tower power equipment. The outer surface of the above-mentioned insulator body has been coated with an old RTV coating, and the thickness of the old coating is about 500um. Before spraying the superhydrophobic anti-pollution flashover coating, the contact angle to water is 90°, and the rolling angle is 80°. The above samples are sprayed with superhydrophobicity. The preparation method of super self-cleaning coating comprises the following steps:

[0040] 1) Clean the surface dust and oil on the silicone rubber (SR) insulator, requiring no oil, no dust, no water marks, and no solvent.

[0041] 2) A layer of silicone oil barrier layer is coated on the surface, and the type of the barrier layer is 10 parts of epoxy resin, 1 part of epoxy curing agent, and 1 part of epoxy thinner. Dry at room temperature 25°C for 30min. The thickness of the coating is 50um after drying.

[0042] 3) Surface...

Embodiment 2

[0045] A super-hydrophobic composite silicone rubber insulator is used for outdoor power equipment in 220KV substations. The above insulators are made of synthetic silicone rubber with no coating on the surface. Before spraying the super-hydrophobic anti-pollution flashover paint, the contact angle to water is 100°, and the rolling angle is 60°. The preparation method of the above-mentioned sample sprayed with the super-hydrophobic and super-self-cleaning paint comprises the following steps:

[0046] 1) Clean the surface dust and oil on the composite silicone rubber insulator, requiring no oil, no dust, no water marks, and no solvent.

[0047] 2) A layer of silicone oil barrier layer is coated on the surface, and the type of the barrier layer is 12 parts of epoxy resin, 1 part of epoxy curing agent, and 1 part of epoxy thinner. Dry at room temperature 25°C for 30min. The thickness of the coating after drying is 60um.

[0048] 3) The surface is coated with a super-hydrophobi...

Embodiment 3

[0051] A super-hydrophobic composite cross-arm insulator is used for outdoor electrical equipment of outdoor 35KV substations. The above insulators are made of synthetic silicone rubber with no coating on the surface. Before spraying the super-hydrophobic anti-pollution flashover paint, the contact angle to water is 90°, and the rolling angle is 70°. The preparation method of the above-mentioned sample sprayed with the super-hydrophobic and super-self-cleaning paint comprises the following steps:

[0052] 1) Clean the surface dust and oil on the composite silicone rubber insulator, requiring no oil, no dust, no water marks, and no solvent.

[0053] 2) A layer of silicone oil barrier layer is coated on the surface, and the type of the barrier layer is 11 parts of epoxy resin, 1 part of epoxy curing agent, and 0.8 part of epoxy thinner. Dry at room temperature 25°C for 30min. The thickness of the coating after drying is 60um.

[0054] 3) The surface is coated with a superhydr...

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Abstract

The invention discloses a super-hydrophobic anti-pollution flashover coating that can be used on the surface of RTV / SR materials and a preparation method thereof. The super-hydrophobic anti-pollution flashover coating includes a super-hydrophobic coating and a silicone oil barrier layer coating; the super-hydrophobic coating The dry film thickness of the layer is 50-120um, and the dry film thickness of the silicone oil barrier layer coating is 10-50um. The preparation method includes four steps: cleaning, applying a silicone oil barrier layer, applying a superhydrophobic primer layer and applying a superhydrophobic topcoat layer. The super-hydrophobic anti-pollution flashover coating of the present invention can be directly re-coated on the surface of RTV, PRTV or silicone rubber material. First, it solves the problems of insufficient hydrophobicity and fouling of RTV silicone rubber material, and the surface achieves super-hydrophobicity, super-self Clean, anti-condensation and delayed freezing state effects, and greatly improve outdoor aging resistance, the second is to solve the problem of difficult recoating of RTV silicone rubber materials, suitable for convenient recoating directly on the surface of various RTV silicone rubber materials, The third is that the coating with a very thin thickness can make the surface hydrophobic angle of the material > 150°, and achieve a lasting super-hydrophobic state.

Description

technical field [0001] The invention relates to the technical field of equipment in the power industry, in particular to a superhydrophobic anti-pollution flashover coating that can be used on the surface of RTV / SR materials and a preparation method thereof. Background technique [0002] Room temperature vulcanized silicone rubber long-term anti-pollution flashover or composite coating (referred to as RTV coating or PRTV coating) is widely used in the external insulation and anti-pollution flashover work of power transmission and transformation equipment. In the area where the transmission line passes, due to industrial pollution, salt spray from the sea breeze, dust in the air and other pollutants gradually accumulate and adhere to the surface of the insulator, forming a pollution layer. This filth contains acid-base and salt components, which has poor conductivity when dry, and has a high conductivity when exposed to water. In bad weather such as rain, snow melting, fog, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D7/02B05D7/24B05D5/00C09D1/00C09D5/00C09D163/00C09D175/04C09D5/16
CPCB05D7/02B05D7/586B05D7/24B05D5/00C09D163/00C09D175/04C09D5/002C09D1/00C09D5/1681C09D5/1687B05D2201/02B05D2504/00B05D2503/00B05D2420/01B05D2420/02
Inventor 陈智朱仕惠王知伟王芹
Owner 武汉疏能新材料有限公司
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