Manufacturing method and using method of electrical coating

Abstract

The invention relates to the technical field of coatings, in particular to a manufacturing method and a using method of an electrical coating. The manufacturing method of the electrical coating comprises the following steps: preparing a coating A, preparing isolation powder and preparing a coating B, preparing a coating A; the coating A is prepared by mixing the following materials in parts by mass: ethyl acetate, xylene, neoprene latex, nanometer magnesia powder and the like; isolation powder is prepared; the isolation powder comprises powder C and powder D; preparing a coating B; the coating B is prepared by mixing the following materials in parts by mass: a fluorosiloxane polymer, acrylic resin and the like; the use method of the electrical coating obtained according to the electrical coating manufacturing method comprises the following steps: S1, uniformly spraying the coating A on the surface of an additive, and the like. The anti-flashover device has the advantages of better anti-flashover effect and more durable durability.

Description

Technical Field

[0001] This invention relates to the field of coating technology, and more specifically to a method for preparing coatings that reduce flashover electrical conduction. Background Technology

[0002] In the patent document with publication number "CN115403967A" and title "An Anti-condensation Flashover Coating", an anti-condensation flashover coating is disclosed. It includes the following materials: fluorocarbon resin, hydroxyl acrylic resin, propylene glycol methyl ether acetate, butyl acetate, ethylene glycol butyl ether, xylene, defoamer, etc. The coating obtained in this way has the advantages of improving withstand voltage, increasing operational safety, and reducing flashover occurrence. However, it is still lacking in terms of further flashover prevention and durability, and cannot meet some requirements for better flashover prevention and longer durability. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned shortcomings by providing a method for manufacturing and using an electrical coating that offers better flashover protection and longer durability.

[0004] The technical solution of the electrical coating manufacturing method of the present invention is as follows: an electrical coating manufacturing method includes preparing coating A, preparing isolation powder, and preparing coating B; Preparation of Coating A: The preparation of Coating A comprises the following materials in parts by weight: 10-20 parts ethyl acetate, 30-50 parts xylene, 10-20 parts chloroprene latex, 5-7 parts nano magnesium oxide powder, 3-5 parts softening oil, 150-200 parts gelatin, 4-5 parts cellulose fiber, 0.5-0.6 parts dicumyl peroxide, 5-7 parts nano ceramic powder, 5-7 parts nano rubber powder, and 3-5 parts coupling agent. The coating is obtained by mixing the above materials. The method for preparing an isolation powder includes C powder and D powder. The C powder is at least one of coarse ceramic powder, mica powder, and hollow microspheres. The D powder is at least one of cellulose fiber and rubber powder. The powder is prepared by mixing 1 part by weight of C powder and 0.8 to 1.2 parts by weight of D powder.

[0005] The preparation of coating B comprises the following components by weight: 40-45 parts of fluorosiloxane polymer, 10-12 parts of acrylic resin, 8-12 parts of nano-silicone rubber powder, 3-5 parts of isocyanate solid, 2-3 parts of aminoethylaminopropyltrimethoxysilane, 2-3 parts of ethylene glycol butyl ether, 3-5 parts of xylene, 2-4 parts of calcined clay, 3-6 parts of titanium dioxide nanoparticles, and 3-6 parts of silicon nitride powder. The coating B is prepared by mixing the above materials.

[0006] Furthermore, the diameter of the coarse ceramic powder and mica powder is 0.2-0.4 mm; the diameter of the hollow microspheres is 0.5-0.7 mm.

[0007] Furthermore, the C powder in the isolation powder contains coarse ceramic powder, mica powder, and hollow microspheres in a mass ratio of 1:1:1.

[0008] Furthermore, the D powder in the isolation powder contains cellulose fiber and rubber powder, and the mass ratio of the cellulose fiber to the rubber powder is 0.8 to 1.2.

[0009] The technical solution of the method of use of the present invention is implemented as follows: The method of using the electrical coating obtained according to the above-described method of preparing the electrical coating: S1: Spray paint A evenly onto the surface of the object to be applied; S2: While coating A is not dry, apply the release powder evenly to the surface of coating A, and control the thickness of the release powder between 0.3-0.5 mm; S3: Spray coating B evenly onto the isolation powder.

[0010] Furthermore, the surface of the object to be applied is heated to 70-80°C before spraying coating A.

[0011] Furthermore, before the implementation of S3, atomized neoprene latex was sprayed onto the isolation powder.

[0012] The beneficial effects of this invention are that the electrical coating produced by this method has the advantages of better anti-flashover effect and longer durability.

[0013] This method of application results in a coating that has better flashover protection and longer durability. Detailed Implementation

[0014] The technical solution of the present invention will be further described below with reference to the embodiments.

[0015] First, the following explanation is given regarding some of the raw materials used: Plasticizing oil: Plasticizing oil is a commonly used chemical, also known as a plasticizer. It refers to compounds that are soluble in resins or plastics and can increase the softness, flexibility, and plasticity of plastics. Its main components are usually cycloalkanes, epoxy compounds, etc. Plasticizing oil is widely used in the chemical, coating, rubber, and plastics industries and is an important component of these materials.

[0016] Gelatin: Gelatin is a macromolecular hydrophilic colloid, a product of partial hydrolysis of collagen. It can be classified into photographic gelatin, edible gelatin, and industrial gelatin according to its properties and uses. The quality requirements for gelatin vary depending on its application. When used as an adhesive, the primary requirement is bonding strength. Collagen molecules are helices formed by three intertwined polypeptide chains. Through processing, these helices denature and decompose into α-components consisting of a single polypeptide chain (α-chain), β-components consisting of two α-chains, and γ-components consisting of three α-chains, as well as molecular chain fragments in between, smaller than the α-component, or larger than the γ-component.

[0017] Coupling agent: Si-550 (also known as KH-550, A-1100) can be used. Its chemical name is 3-aminopropyltriethoxysilane. This compound is an amino-functionalized silane. It appears as a colorless or slightly yellow transparent liquid and is soluble in water and organic solvents other than acetone and carbon tetrachloride. Its pH value is alkaline.

[0018] The others are all common chemical raw materials, which are available on the market.

[0019] The table below shows the selected mass of each raw material: Unit: grams

[0020] This electrical coating shall be produced in the following manner: To prepare coating A, mix ethyl acetate, xylene, chloroprene latex, nano magnesium oxide powder, softening oil, gelatin, cellulose fiber, dicumyl peroxide, nano ceramic powder, nano rubber powder, and coupling agent from each group. Separating powder is prepared by mixing coarse ceramic powder and cellulose fiber in each group.

[0021] To prepare coating B, mix the fluorosiloxane polymer, acrylic resin, nano-silicone rubber powder, isocyanate solid, aminoethylaminopropyltrimethoxysilane, ethylene glycol butyl ether, xylene, calcined clay, titanium dioxide nanoparticles, and silicon nitride powder of each group.

[0022] The diameter of the coarse ceramic powder is 0.2-0.4 mm; the diameter of the hollow microspheres is 0.5-0.7 mm.

[0023] The coating is obtained using the following method. S1: Spray paint A evenly onto the surface of the object to be applied; S2: While coating A is not dry, apply the release powder evenly to the surface of coating A, and control the thickness of the release powder between 0.3-0.5 mm; S3: Spray coating B evenly onto the isolation powder.

[0024] Three coatings were tested, and the coatings obtained by these coatings showed stronger anti-flashover effects compared to commonly used paints. The same coatings also showed a 20% increase in withstand voltage.

[0025] In the above embodiments, replacing the coarse ceramic powder with mica powder, hollow microspheres, or a mixture of ceramic powder, mica powder, and hollow microspheres achieves the same effect. In the above embodiments, replacing cellulose fibers with rubber powder, or with a mixture of cellulose fibers and rubber powder, has the same effect; In the above embodiment, the surface of the object is made to have a temperature of 70-80° before spraying coating A.

[0026] The applied object is the area where the paint is sprayed, such as an electrical surface.

[0027] The resulting coating has the advantage of being more durable and will not peel off even after long-term use.

[0028] In the above embodiment, before S3 is implemented, the isolation powder is sprayed with atomized neoprene latex.

[0029] The resulting coating has the advantages of better anti-flashover effect and is less prone to delamination and breakage.

Claims

1. A method for preparing an electrical coating, characterized in that: This includes the preparation of coating A, the preparation of separating powder, and the preparation of coating B; Preparation of Coating A: The preparation of Coating A comprises the following materials in parts by weight: 10-20 parts ethyl acetate, 30-50 parts xylene, 10-20 parts chloroprene latex, 5-7 parts nano magnesium oxide powder, 3-5 parts softening oil, 150-200 parts gelatin, 4-5 parts cellulose fiber, 0.5-0.6 parts dicumyl peroxide, 5-7 parts nano ceramic powder, 5-7 parts nano rubber powder, and 3-5 parts coupling agent. The coating is obtained by mixing the above materials. The method for preparing an isolation powder includes C powder and D powder. The C powder is at least one of coarse ceramic powder, mica powder, and hollow microspheres. The D powder is at least one of cellulose fiber and rubber powder. The powder is prepared by mixing 1 part by weight of C powder and 0.8 to 1.2 parts by weight of D powder. The preparation of coating B comprises the following components by weight: 40-45 parts of fluorosiloxane polymer, 10-12 parts of acrylic resin, 8-12 parts of nano-silicone rubber powder, 3-5 parts of isocyanate solid, 2-3 parts of aminoethylaminopropyltrimethoxysilane, 2-3 parts of ethylene glycol butyl ether, 3-5 parts of xylene, 2-4 parts of calcined clay, 3-6 parts of titanium dioxide nanoparticles, and 3-6 parts of silicon nitride powder. The coating B is prepared by mixing the above materials.

2. In the method for preparing electrical coating according to claim 1, the diameter of the coarse ceramic powder and mica powder is 0.2-0.4 mm; the diameter of the hollow microspheres is 0.5-0.7 mm.

3. The method for preparing electrical coating according to claim 1, wherein the C powder in the insulating powder contains coarse ceramic powder, mica powder, and hollow microspheres in a mass ratio of 1:1:

1.

4. The method for preparing electrical coating according to claim 1, wherein the insulating powder D contains cellulose fiber and rubber powder, and the mass ratio of cellulose fiber to rubber powder is 0.8 to 1.

2.

5. Application method of the electrical coating obtained according to the above-described method: S1: Spray paint A evenly onto the surface of the object to be applied; S2: While coating A is not dry, apply the release powder evenly to the surface of coating A, and control the thickness of the release powder between 0.3-0.5 mm; S3: Spray coating B evenly onto the isolation powder.

6. The method of applying the electrical coating according to claim 4, characterized in that: Before spraying coating A, ensure the surface of the substrate is at a temperature of 70-80°C.

7. The method of applying the electrical coating according to claim 4, characterized in that: Before S3 was implemented, atomized neoprene latex was sprayed onto the isolation powder.

Images