Preparation method and use method of electric paint coating agent

Abstract

The invention relates to the technical field of paint, in particular to a preparation method of an electric paint coating agent, which comprises dibutyltin dilaurate, aluminum hydroxide powder, aminated modified graphene oxide, trichloromethane, acetic acid, nano polytetrafluoroethylene micro powder and nano polytetrafluoroethylene micro powder. The preparation method comprises the following steps: S1, uniformly mixing and stirring dibutyltin dilaurate, aluminum hydroxide powder and amination modified graphene oxide to obtain a first mixed preparation; s2, adding acetic acid into trichloromethane, uniformly stirring, sequentially adding nano polytetrafluoroethylene micro powder, and uniformly stirring, so as to obtain a second mixed preparation. When the coating agent is used, the first mixed preparation and the second mixed preparation are uniformly mixed to obtain a mixed coating, the surface of an electric material is coated with the coating agent for the electric coating within 60-100 minutes to form a bonding layer, and then the bonding layer is coated with the electric coating. And the electrical connection is firmer, and is not easy to crack and generate cracks.

Description

Technical Field

[0001] The invention relates to the technical field of coatings, and in particular to a method for preparing and using an electric power coating agent. Background Art

[0002] During the use of electrical equipment, some electrical equipment often cracks, such as some cables, electrical component connections, electrical casings, etc., which affect normal use. At this time, paint can be used to coat the equipment to make it intact.

[0003] In the prior art, damaged electrical appliances are coated with paint, and the paint is directly coated on the damaged parts of the electrical appliances. For example, the paint used is a paint made according to the publication number "CN115058192B" and the name is "A kind of arc-resistant insulating paint for electric locomotives". Another example is a paint made according to the publication number "CN116082924B" and the name is "A kind of low-temperature curing thin-coat insulating powder paint and its preparation method". Both of them are directly coated on the electrical appliances. Such a method of coating electrical appliances with paint has the disadvantages that the connection between the paint and the electrical appliances is not very firm, and the paint is easy to crack, especially after long-term use. The surface of the paint is prone to cracking, which affects the use effect of the paint. Summary of the invention

[0004] The purpose of the present invention is to address the above-mentioned shortcomings and provide a method for preparing and using an electric paint coating agent that can make the paint and electrical connection more secure and prevent the paint from cracking and crazing after long-term application.

[0005] The technical solution of the method for preparing the electric power coating agent of the present invention is as follows: A method for preparing the electric power coating agent comprises the following raw materials and mass fractions: 20-25 parts of dibutyltin dilaurate 5-7 parts of aluminum hydroxide powder 3-5 parts of amino-modified graphene oxide 10-12 parts of chloroform Acetic acid 0.2-0.4 parts 1-2 parts of nano polytetrafluoroethylene powder 2-3 parts of sodium tripolyphosphate The amino-modified graphene oxide is prepared by dissolving graphene oxide in dimethylformamide, dispersing the graphene oxide uniformly, adding diethylenetriamine and acetic acid, mixing uniformly, reacting at a temperature of 60°C-70°C, filtering, and drying to obtain the amino-modified graphene oxide, wherein the mass ratio of the graphene oxide, dimethylformamide, acetic acid, and diethylenetriamine is 2:6-7:1:2; S1. The dibutyltin dilaurate and aluminum hydroxide powder and the amino-modified graphene oxide are mixed and stirred to obtain a first mixed preparation; S2. Add acetic acid to chloroform, stir evenly and heat to 20°C-25°C, then add nano-polytetrafluoroethylene powder in sequence, stir evenly, cool to 15°C-20°C, add sodium tripolyphosphate, stir evenly to obtain a second mixed preparation.

[0006] Preferably, the mass fraction is: 22.5 parts of dibutyltin dilaurate 6 parts of aluminum hydroxide powder 4 parts of amino-modified graphene oxide 11 parts of chloroform 0.3 parts of acetic acid 1.5 parts of nano polytetrafluoroethylene powder 2.5 parts of sodium tripolyphosphate. Preferably, the amino-modified graphene oxide is prepared by dissolving graphene oxide in dimethylformamide, dispersing the graphene oxide uniformly, adding diethylenetriamine and acetic acid, mixing uniformly, reacting at a temperature of 65° C., filtering, and drying to obtain the amino-modified graphene oxide; S1. The dibutyltin dilaurate and aluminum hydroxide powder and the amino-modified graphene oxide are mixed and stirred to obtain a first mixed preparation; S2. Add acetic acid to chloroform, stir evenly and heat to 23°C, then add nano-polytetrafluoroethylene powder in sequence, stir evenly, cool to 17°C, add sodium tripolyphosphate, stir evenly, and obtain a second mixed preparation.

[0007] The present invention also protects an electric power paint coating agent, which is the electric power paint coating agent obtained by the above claims.

[0008] The technical solution of the method for using the electric power coating coating agent of the present invention is as follows: a method for using the electric power coating coating agent, using the above-mentioned electric power coating coating agent; First, clean the surface of the electric material, mix the first mixed preparation and the second mixed preparation evenly to obtain a mixed coating, namely, an electric paint coating agent; apply the electric paint coating agent to the surface of the electric material within 60-100 minutes to form an adhesive layer, and then apply the electric paint on the adhesive layer.

[0009] Preferably, when the electric paint coating agent is applied to the surface of the electric material, the temperature of the surface of the electric material is 15-20°C higher than that of the mixed paint.

[0010] Preferably, when the electric power coating agent is coated on the surface of the electric material, the thickness of the electric power coating agent is 0.3-0.4 mm.

[0011] The beneficial effects of the present invention are: the preparation method of such an electric paint coating agent can obtain a paint that has a stronger electrical connection and is not easy to crack or crack after the paint is applied; such a use method can make the electrical connection stronger and the coating is not easy to crack or crack after the paint is applied. DETAILED DESCRIPTION

[0012] The present invention will be further described below in conjunction with the embodiments.

[0013] Some raw materials are introduced below: Dibutyltin dilaurate is an organic tin additive. It is soluble in organic solvents such as benzene, toluene, carbon tetrachloride, ethyl acetate, chloroform, acetone, petroleum ether and all industrial plasticizers, but insoluble in water. It is a light yellow or colorless oily liquid at room temperature and a white crystal at low temperature. It can be used as a polyvinyl chloride plastic additive. It has excellent lubricity, transparency, weather resistance, and good resistance to sulfide pollution.

[0014] Aminated modified graphene oxide, wherein the aminated modified graphene oxide is prepared by dissolving graphene oxide in dimethylformamide and adding acetic acid, dispersing the graphene oxide uniformly, adding diethylenetriamine, mixing the mixture uniformly, reacting the mixture at a temperature of 60°C to 70°C, filtering the mixture, and drying the mixture to obtain the aminated modified graphene oxide; the mass ratio of the graphene oxide, dimethylformamide, acetic acid, and diethylenetriamine is 2:6-7:1:2; Chloroform is a colorless, transparent liquid that is non-flammable. The pure product is sensitive to light and will react with oxygen in the air when exposed to light.

[0015] Nano-PTFE powder is an ultrafine powder made from PTFE resin by a special process. It has excellent chemical resistance, thermal stability, high lubricity and electrical insulation.

[0016] The following table shows the mass of each component used to prepare the power coating agent (unit: kilogram): Example 1 The power coating agent is prepared according to the following process; S1. The dibutyltin dilaurate and aluminum hydroxide powder and the amino-modified graphene oxide are mixed and stirred to obtain a first mixed preparation; S2. Add acetic acid to chloroform, stir evenly and heat to 20°C-25°C, then add nano-polytetrafluoroethylene powder in sequence, stir evenly, cool to 15°C-20°C, add sodium tripolyphosphate, stir evenly to obtain a second mixed preparation.

[0017] Example 2-1 The coating was applied directly to the part of the electrical equipment that needed to be coated to obtain a comparative coating.

[0018] Example 2-2 The electric power coating agent obtained in Example 1 is applied to the parts of the electric power equipment that need to be coated according to the following process.

[0019] When using the above-mentioned electric power paint coating agent, first, clean the surface of the electric material, mix the first mixed preparation and the second mixed preparation evenly to obtain a mixed paint, apply the mixed paint to the surface of the electric material within 60-100 minutes to form an adhesive layer, and then apply the electric power paint on the adhesive layer.

[0020] The following table shows the correspondence between the power coating agent used and the coating obtained: The name of the power coating agent obtained First coating agent Second coating agent The third coating agent Fourth coating agent Fifth coating agent The obtained coating Comparison of coatings First coating Second coating Third coating Fourth coating Fifth coating Effect of coating The coating and electrical connection are not strong, easy to crack, and the coating is prone to cracking The coating and electrical connection are strong and not easy to crack or craze. The coating and electrical connection are strong and not easy to crack or craze. The coating and electrical connection are the strongest, less prone to cracking, and the coating is less prone to cracking The coating and electrical connection are not strong enough, the crack resistance is not good, and there are cracks after long-term use The coating and electrical connection are not strong enough, the crack resistance is not good, and there are cracks after long-term use It should be noted that the coating used is a commonly used coating, and can also be: a coating made according to the publication number "CN115058192B" and the name "an arc-resistant insulating coating for electric locomotives". For example, the coating used is a coating made according to the publication number "CN116082924B" and the name "a low-temperature cured thin-coat insulating powder coating and its preparation method".

[0021] Example 2-3 In one embodiment, the following technical solution is adopted: when the power coating agent is applied to the surface of the electrical material, the temperature of the electrical material surface is 15-20° C. higher than that of the power coating agent. The obtained coating is more excellent in terms of firm electrical connection, crack resistance, and crack resistance of the coating.

[0022] Example 2-3 In one embodiment, when the electric coating agent is applied to the surface of the electric material, the thickness of the electric coating agent is 0.3-0.4 mm. The obtained coating is more excellent in terms of firm electrical connection, crack resistance, and crack resistance of the coating.

[0023] Example 3 The following table shows the mass of each component used to prepare the power coating agent (unit: kilogram): Raw material name Component 1 Second component The third component The fourth component The fifth component Dibutyltin dilaurate 20 25 22.5 22.5 22.5 Aluminum hydroxide powder 5 7 6 0 6 Amino modified graphene oxide 3 5 4 4 0 Chloroform 10 12 11 11 11 Acetic acid 0.2 0.4 0.3 0 0.3 Nano polytetrafluoroethylene powder 1 2 1.5 1.5 1.5 Sodium tripolyphosphate 2 3 2.5 2.5 0 The name of the power coating agent obtained First coating agent Second coating agent The third coating agent Fourth coating agent Fifth coating agent The raw materials of the required electric power paint coating agent are mixed into one pot (i.e., not the production method of this process), and the resulting coating agent is used for electrical applications and as an electric power paint coating agent, and then the paint is applied on the electric power paint coating agent. The resulting coating does not have the effect of good connection between the paint and the electrical application and is not easy to resist cracking after long-term use.

[0024] Example 4 Repeat Example 1 and adopt the following technical scheme; The oxidized modified graphene is prepared by dissolving graphene oxide in dimethylformamide, dispersing the mixture uniformly, adding diethylenetriamine, mixing the mixture uniformly, reacting the mixture at a temperature of 65° C., filtering the mixture, and drying the mixture to obtain amino-modified graphene oxide. S1. The dibutyltin dilaurate and aluminum hydroxide powder and the amino-modified graphene oxide are mixed and stirred to obtain a first mixed preparation; S2. Add acetic acid to chloroform, stir evenly and heat to 23°C, then add nano-polytetrafluoroethylene powder in sequence, stir evenly, cool to 17°C, add sodium tripolyphosphate, stir evenly, and obtain a second mixed preparation.

[0025] The electric power paint coating agent obtained in this way is used for electrical applications and is more excellent in crack resistance.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A method for preparing a power coating agent, comprising the following raw materials and mass fractions: 20-25 parts of dibutyltin dilaurate 5-7 parts of aluminum hydroxide powder 3-5 parts of amino-modified graphene oxide 10-12 parts of chloroform 0.2-0.4 parts of acetic acid 1-2 parts of nano polytetrafluoroethylene powder 2-3 parts of sodium tripolyphosphate The amino-modified graphene oxide is prepared by dissolving graphene oxide in dimethylformamide, dispersing the graphene oxide uniformly, adding diethylenetriamine and acetic acid, mixing uniformly, reacting at a temperature of 60°C-70°C, filtering, and drying to obtain the amino-modified graphene oxide; the mass ratio of the graphene oxide, dimethylformamide, acetic acid, and diethylenetriamine is 2:6-7:1:2; S1. The dibutyltin dilaurate and aluminum hydroxide powder and the amino-modified graphene oxide are mixed and stirred to obtain a first mixed preparation; S2. Add acetic acid to chloroform, stir evenly and heat to 20°C-25°C, then add nano-polytetrafluoroethylene powder in sequence, stir evenly, cool to 15°C-20°C, add sodium tripolyphosphate, stir evenly to obtain a second mixed preparation.

2. The method for preparing the electric power coating agent according to claim 1, characterized in that: The mass fractions are: 22.5 parts of dibutyltin dilaurate 6 parts of aluminum hydroxide powder 4 parts of amino-modified graphene oxide 11 parts of chloroform 0.3 parts of acetic acid 1.5 parts of nano polytetrafluoroethylene powder 2.5 parts of sodium tripolyphosphate.

3. The method for preparing the electric power coating agent according to claim 1 or 2; characterized in that: The amino-modified graphene oxide is prepared by dissolving graphene oxide in dimethylformamide, dispersing the graphene oxide uniformly, adding diethylenetriamine, mixing the mixture uniformly, reacting the mixture at a temperature of 65° C., filtering the mixture, and drying the mixture to obtain the amino-modified graphene oxide. S1. The dibutyltin dilaurate and aluminum hydroxide powder and the amino-modified graphene oxide are mixed and stirred to obtain a first mixed preparation; S2. Add acetic acid to chloroform, stir evenly and heat to 23°C, then add nano-polytetrafluoroethylene powder in sequence, stir evenly, cool to 17°C, add sodium tripolyphosphate, stir evenly, and obtain a second mixed preparation.

4. An electric power paint coating agent, which is the electric power paint coating agent obtained according to the above claims.

5. A method for using an electric power paint coating agent. Using the above-mentioned electric power paint coating agent, first, clean the surface of the electric material, mix the first mixed preparation and the second mixed preparation evenly to obtain a mixed coating, i.e., the electric power paint coating agent, and apply the electric power paint coating agent to the surface of the electric material within 60-100 minutes to form an adhesive layer, and then apply the electric power paint on the adhesive layer.

6. The method for using the electric power coating agent according to claim 5, characterized in that: When the electric paint coating agent is applied to the surface of the electric material, the temperature of the surface of the electric material is 15-20°C higher than that of the mixed paint.

7. The method for using the electric power coating agent according to claim 5, characterized in that: When the electric paint coating agent is applied on the surface of the electric material, the thickness of the electric paint coating agent is 0.3-0.4 mm.

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