Preparation method of anti-pollution flashover coating for coating electrical equipment

Abstract

The invention relates to the technical field of electrical equipment coating, in particular to a preparation method of an anti-pollution flashover coating for electrical equipment coating, and the preparation method comprises the following steps: S1, preparing materials; step S2, proportioning and weighing; s3, raw material pretreatment: S1, material preparation refers to preparation of base material raw materials, functional filler raw materials, auxiliary raw materials and auxiliary raw materials, and S2, proportioning and weighing refers to scientific proportioning according to difference of the base material raw materials, the functional filler raw materials, the auxiliary raw materials and the auxiliary raw materials; and weighing equipment is adopted to accurately weigh the proportioned base material raw material, functional filler raw material, auxiliary agent raw material and auxiliary raw material. The core functions of hydrophobicity, weather resistance and the like are enhanced by increasing the proportion of the base material, and the coating adapts to complex climatic environments; the mechanical strength and the insulation stability can be improved by reducing the proportion of the base material, and the cable is suitable for severe industrial scenes; and meanwhile, construction convenience and cost control are considered, and the power equipment can be fully protected.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment coating, in particular to a method for preparing an anti-pollution flashover coating for electric power equipment coating. Background Art

[0002] Power equipment is a general term for various types of equipment used in the power system for power generation, transmission, transformation, distribution, consumption and related regulation and protection. It is the core material basis for ensuring power production, transmission and use. In order to improve the reliability, life and safety of the equipment and adapt to complex working conditions such as outdoor, humid, dirty, and high temperature, anti-pollution flashover coating will be coated on the surface of the power equipment.

[0003] Anti-pollution flashover paint is a functional coating designed specifically for power equipment (such as insulators, bushings, disconnectors, etc.). Its core function is to prevent "pollution flashover" accidents caused by pollution deposition. Anti-pollution flashover paint is composed of base material, functional filler, additives, and solvents. The base material in the anti-pollution flashover paint raw materials is the main material for achieving hydrophobicity. When the base material content is low, it is affected by the outside world, which causes external dust, salt, and industrial waste gas residues to adhere to the power equipment, affecting the operation of the power equipment, which leads to a sharp drop in the insulation performance of the power equipment. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem of limited reaction effect of base materials in anti-pollution flashover coatings in the prior art, and to propose a preparation method of anti-pollution flashover coatings for coating power equipment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A method for preparing an anti-pollution flashover coating for coating power equipment, the method comprising the following steps:

[0007] Step S1, preparing materials;

[0008] Step S2, proportioning and weighing;

[0009] Step S3: pretreatment of raw materials.

[0010] Preferably, the step S1, preparing materials refers to preparing base material raw materials, functional filler raw materials, auxiliary agent raw materials, and auxiliary raw materials;

[0011] The step S2, proportioning and weighing refers to scientifically proportioning the base material raw materials, functional filler raw materials, auxiliary agent raw materials, and auxiliary raw materials according to their differences, and accurately weighing the proportioned base material raw materials, functional filler raw materials, auxiliary agent raw materials, and auxiliary raw materials using a weighing device;

[0012] Said step S3, raw material pretreatment refers to the pretreatment of base material raw materials, functional filler raw materials, auxiliary agent raw materials, and auxiliary raw materials, including raw material classification, raw material mixing, and defoaming treatment.

[0013] Preferably, the raw material classification refers to the classification into solid raw materials and liquid raw materials according to the different states of base raw materials, functional filler raw materials, auxiliary raw materials and auxiliary raw materials;

[0014] The raw material mixing refers to putting the processed base material, functional filler material, auxiliary agent material and auxiliary material into the stirring equipment respectively for stirring and mixing;

[0015] The defoaming treatment refers to eliminating air bubbles mixed in during the production or construction process of the coating.

[0016] Preferably, the base material raw material includes one or a mixture of two or more of ethanol, propylene glycol, ethylene glycol, and methanol as a co-solvent.

[0017] Preferably, the functional filler includes one or a mixture of two or more of aluminum hydroxide, magnesium hydroxide, titanium dioxide, and modified mica powder.

[0018] Preferably, the weight proportion of the base material raw material is 10%-50%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary agent raw material is 1%-5% to obtain the coating semi-finished product A.

[0019] Preferably, the content of the base material raw material is 40%-49%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary agent raw material is 1%-5% to obtain the coating semi-finished product B.

[0020] Step S1, the content of the base material raw material is 30%-40%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary agent raw material is 1%-5% to obtain a coating product C.

[0021] Step S2, the content of the base material raw material is 15%-30%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary agent raw material is 1%-5% to obtain a coating product D.

[0022] Preferably, the content of the base material raw material is 10%-15%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary agent raw material is 1%-5% to obtain the finished coating product E.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. The present invention adjusts the content of the base material in the raw material group to achieve targeted adaptation of the coating performance. The adjustment of the base material content can balance the flexibility and rigidity of the coating, reduce the risk of aging or breakage, take into account both construction performance and economy, and improve application adaptability.

[0025] 2. The different base material contents in the raw material group of the present invention result in different data schemes. By comparing the usage results according to the schemes, the optimal results can be obtained. After the anti-fouling flashover coating is sprayed on the power equipment, the hydrophobic performance can be maximized and the impact of the outside world on the power equipment can be reduced.

[0026] In summary, the present invention enhances core functions such as hydrophobicity and weather resistance by increasing the proportion of base materials, thus adapting to complex climate environments; it can also improve mechanical strength and insulation stability by reducing the proportion of base materials, thus adapting to harsh industrial scenarios; at the same time, it takes into account construction convenience and cost control, and can fully protect power equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the preparation steps of a method for preparing an anti-pollution flashover coating for coating power equipment proposed by the present invention;

[0028] Figure 2 This is a schematic diagram of base material raw materials for a method for preparing an anti-pollution flashover coating for coating power equipment proposed in the present invention;

[0029] Figure 3 This is a schematic diagram of functional filler raw materials for a method for preparing an anti-pollution flashover coating for coating power equipment proposed by the present invention;

[0030] Figure 4 This is a schematic diagram of auxiliary raw materials for the preparation method of an anti-pollution flashover coating for coating power equipment proposed by the present invention;

[0031] Figure 5 This is a schematic diagram of raw material pretreatment in a method for preparing an anti-pollution flashover coating for coating power equipment proposed in the present invention;

[0032] Figure 6 A schematic diagram of solid raw materials for a method for preparing an anti-pollution flashover coating for coating power equipment proposed in the present invention;

[0033] Figure 7 This is a schematic diagram of liquid raw materials for the preparation method of an anti-pollution flashover coating for coating power equipment proposed by the present invention. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figure 1-Figure 7 A method for preparing an anti-pollution flashover coating for coating power equipment, the preparation method comprising the following steps:

[0036] Step S1, preparing materials;

[0037] Step S2, proportioning and weighing;

[0038] Step S3: raw material pretreatment.

[0039] The base material raw materials include one or a mixture of two or more of ethanol, propylene glycol, ethylene glycol, and methanol as cosolvents, and the functional filler includes one or a mixture of two or more of aluminum hydroxide, magnesium hydroxide, titanium dioxide, and modified mica powder.

[0040] The base materials include: silicone resin, fluorocarbon resin, epoxy resin, silicone-epoxy composite resin, fluorocarbon-epoxy composite resin, silane-modified resin, and hydrophobic resin.

[0041] Functional filler materials include hydrophobic reinforcing fillers, insulating reinforcing fillers, weather-resistant and corrosion-resistant fillers.

[0042] Hydrophobic reinforcing fillers include fumed silica (nanoscale), insulating reinforcing fillers include mica powder, quartz powder, aluminum fluoride, boron nitride, and glass beads, and weather-resistant and corrosion-resistant fillers include titanium dioxide, zinc fluoride, and talc.

[0043] The auxiliary raw materials include construction optimization module and coating optimization module. The construction optimization module includes dispersant, leveling agent, defoaming agent, thixotropic agent, and diluent. The coating optimization module includes anti-settling agent, plasticizer, antibacterial agent, coupling agent, antifreeze agent, light stabilizer, anti-aging agent, and adhesion promoter.

[0044] The content of the base material raw material is 10%-50%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary agent raw material is 1%-5% to obtain a coating finished product A.

[0045] It is further pointed out that the finished coating product A:

[0046]

[0047] Table 1

[0048] From Table 1 we can see that:

[0049] Base material (10%-50%): As a film-forming substance, the base material has a high proportion of 10%-50% to ensure that the coating forms a continuous and dense film structure, which is the prerequisite for water penetration resistance (reducing pores and defects in the film and preventing water from penetrating through micropores).

[0050] The base material is a material containing hydrophobic groups (-Si-O-Si-) such as silicone resin. Its high content can directly give the coating a low surface energy (surface free energy <25mN / m), providing the molecular basis for the "super-hydrophobic property of surface contact angle >100° (low surface energy makes it difficult for water to spread and can only form a spherical roll).

[0051] Functional fillers (12%-30%): The proportion of functional fillers is 12%-30%, which can enhance the hydrophobic effect through the "micro-nano rough structure" without destroying the film-forming continuity of the base material due to excessive proportion (avoiding filler agglomeration to cause loose membrane structure, which in turn reduces water permeability resistance).

[0052] Additives (1%-5%): Hydrophobic migration agents ensure that the hydrophobic groups in the base material can migrate to the coating surface to maintain long-term super hydrophobicity;

[0053] Dispersants ensure uniform distribution of functional fillers, avoiding hydrophobic failure caused by insufficient local roughness; cross-linking promoters increase the cross-linking density of the base material, making the membrane structure more stable and reducing water penetration channels.

[0054] The content of the base material raw material is 40%-49%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary agent raw material is 1%-5% to obtain a coating product B.

[0055] It is further pointed out that the finished coating product B:

[0056]

[0057] Table 2

[0058] Table 2 shows that the finished coating B has strong hydrophobicity and impermeability, and can meet medium to high protection requirements. Even if the coating surface is exposed to rain, fog and dew for a long time, it is difficult for moisture to penetrate into the substrate (such as the ceramic / glass surface of the insulator), thus avoiding the decrease in insulation resistance after the substrate becomes damp, fundamentally reducing the risk of flashover, and is suitable for scenes prone to flashover such as high humidity, fog, and rain.

[0059] The content of the base raw material is 30%-40%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary raw material is 1%-5% to obtain a coating product C.

[0060] It is further pointed out that the finished coating product C:

[0061]

[0062] Table 3

[0063] Table 3 shows that a continuous coating is formed when the base material content is 30%-40%. However, compared with the finished coating B, the molecular chain cross-linking density is lower and more tiny pores may exist in the membrane structure (the base material's ability to fill space is weakened).

[0064] The density of hydrophobic groups (such as -Si-CH in silicone) decreases: the base material is the main carrier of hydrophobic groups. The reduction in its content reduces the number of hydrophobic groups on the coating surface and slightly increases the surface energy (usually increases to 28-32mN / m, and the finished coating B is about 26-28mN / m respectively). Therefore, the spreading of water on the surface is slightly enhanced, and the contact angle decreases accordingly.

[0065] The "basic barrier" against water penetration is weakened: the continuous film formed by the base material is the core of blocking water penetration. The reduction of its content reduces the density of the film, but the "physical filling" of functional fillers and the "cross-linking optimization" of additives can partially compensate for this - fillers (such as mica) block some pores through particle accumulation, and additives (such as cross-linking promoters, nano-dispersants) improve the cross-linking efficiency of the remaining base material, so that the coating can still maintain the basic performance of "strong water penetration resistance".

[0066] The role of functional fillers has shifted from "auxiliary reinforcement" to "partial dominant structure":

[0067] The functional filler content (12%-30%) is consistent with that of finished coating B, but the reduced binder content increases its "structural proportion" in the coating. The filler not only enhances the hydrophobic "micro-nano-roughness" but also compensates for the loose structure caused by insufficient binder through dense packing between particles. However, high-efficiency additives (such as dispersants) are required to prevent filler agglomeration (otherwise, agglomerated particles will form new pores, reducing impermeability).

[0068] The "compensatory effect" of additives is more prominent:

[0069] Although the proportion of additives is still 1%-5%, their functions need to be more precisely targeted at the defects of insufficient base materials:

[0070] The amount of dispersant may be higher: the base material's ability to wrap the filler is weakened, and a stronger dispersant (such as a block copolymer type) is needed to ensure uniform dispersion of the filler and avoid local accumulation and structural defects;

[0071] Cross-linking agent / coupling agent optimization: By improving the cross-linking efficiency of the base material molecules, or enhancing the interface bonding between the base material and the filler (such as silane coupling agent), the brittleness of the coating caused by the lack of base material is reduced, and the impermeability is improved.

[0072] The content of the base raw material is 15%-30%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary raw material is 1%-5% to obtain a coating product D.

[0073] It is further pointed out that the finished coating product D:

[0074]

[0075] Table 4

[0076] From Table 4 we can see that:

[0077] Functional fillers account for 12%-30%. If flaky, nano-scale or layered fillers (such as nano-montmorillonite, flaky talc, and mica powder) are selected, they can form a "layer-by-layer" physical barrier layer in the coating. Water needs to bypass multiple layers of filler particles to penetrate, and the path is greatly extended, which is equivalent to "replacing part of the continuous film barrier effect of the base material with the physical accumulation of fillers."

[0078] In this ratio, the additive (1%-5%) plays the core function of "making up for the lack of base material":

[0079] High-efficiency cross-linking agent: Increases the cross-linking density of the remaining base material, allowing a small amount of base material molecules to form a denser three-dimensional network, reducing the porosity caused by insufficient base material;

[0080] Waterproofing agents (such as fluorocarbon surface treatment agents and siloxane coupling agents): They form a "chemical hydrophobic barrier" on the coating surface. Even if there are few hydrophobic groups in the base material, the low surface energy of the agent molecules can further reduce water adhesion and penetration.

[0081] Dispersant: Ensures that the filler is evenly dispersed to avoid agglomeration and forming "pore channels".

[0082]

[0083] Table 5

[0084] The content of the base material raw material is 10%-15%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary agent raw material is 1%-5% to obtain the coating finished product E.

[0085] It is further noted that the finished coating product E:

[0086]

[0087]

[0088] Table 6

[0089] From Table 6 we can see that:

[0090] Compared to Finished Paint D (15%-30%), Finished Paint E's binder content is further reduced, reaching the lowest level among all finished products. Binder, the primary film-forming component of coatings, decreases in its content increase reliance on functional fillers and additives, requiring these two to work together more efficiently to compensate for the potential impact on film continuity caused by reduced binder content.

[0091] The content range is consistent with that of the finished coating D, and the proportion is significantly higher than that of the base material (minimum 12% vs. maximum 15%), indicating that functional fillers are still the core functional carrier in the formula. Its wide range (12%-30%) provides room for performance adjustment, and the specific proportion can be adjusted to adapt to the structural requirements after the base material is reduced.

[0092] Although the binder content is reduced to 10%-15%, the water penetration resistance still maintains an "excellent" rating. The reasons may be:

[0093] The high proportion of functional fillers (12%-30%) can block the water penetration channel through physical filling effect, forming a dense barrier structure;

[0094] Additives may optimize the interfacial bonding between the base material and the filler, reduce the porosity of the membrane layer caused by the reduction of the base material, and thus maintain good impermeability.

[0095] Further points out that the finished coating products B, C, D, and E:

[0096]

[0097]

[0098] Table 6

[0099] From Table 2, Table 3, Table 4 and Table 6, we can see that:

[0100] By adjusting the content of base material raw materials in anti-pollution flashover paint and obtaining different hydrophobic data based on the usage results, the base material raw materials of anti-pollution flashover paint can be adjusted according to different usage areas, which can maximize the hydrophobic performance and ensure the operation of power equipment.

[0101] Adjusting the proportion of base material content can improve the weather resistance, corrosion resistance and water seepage resistance of anti-fouling flashover coatings, making them suitable for complex climate environments. Adjusting the proportion of base material content can effectively reduce costs while also being suitable for harsh industrial scenarios.

[0102] Proportioning and weighing refer to scientifically proportioning according to the differences of base material raw materials, functional filler raw materials, auxiliary agent raw materials and auxiliary raw materials, and using weighing equipment to accurately weigh the proportioned base material raw materials, functional filler raw materials, auxiliary agent raw materials and auxiliary raw materials.

[0103] The base raw material is the core component of the coating, which determines the basic properties of the coating (such as adhesion, flexibility, weather resistance, etc.) and provides a carrier for other components. The functional filler raw material enhances the functionality of the coating through physical or chemical effects and is a key auxiliary component for anti-fouling flashover. The amount of auxiliary raw materials used is small, which can significantly optimize the construction performance and coating effect of the coating. Auxiliary raw materials include solvents and cross-linking agents.

[0104] Raw material pretreatment is divided into raw material classification, raw material mixing, and defoaming treatment.

[0105] Raw material classification refers to the classification of base raw materials, functional filler raw materials, additive raw materials, and auxiliary raw materials into solid raw materials and liquid raw materials according to their different states;

[0106] Raw material mixing refers to putting the processed base material, functional filler material, additive material and auxiliary material into the mixing equipment for mixing;

[0107] Defoaming treatment refers to the elimination of air bubbles mixed in during the production or construction process of coatings.

[0108] The solid raw materials include screening and impurity removal module, magnetic separation and iron removal module, washing and purification module, drying processing module, crushing processing module, grinding processing module and refinement processing module.

[0109] Screening and impurity removal: Use a vibrating screen (the mesh size is selected according to the raw material particle size requirements, such as 100-300 mesh is commonly used for pigments, and 80-200 mesh is commonly used for fillers) to remove mechanical impurities (such as stones, fibers) or coarse particle agglomerates mixed in the raw materials to avoid affecting the flatness of the coating (for example, coarse particles cause the coating surface to bulge, which is easy to accumulate pollutants).

[0110] Magnetic separation and iron removal: For mineral fillers that may contain iron filings (such as talcum powder and quartz powder), magnetic separation equipment is used to adsorb iron impurities to prevent iron ions from affecting the insulation of the coating (iron is a conductive substance, and excessive iron will reduce the insulation resistance of the coating).

[0111] Washing and purification: Some fillers (such as calcium carbonate) may have residual surface salt or soluble impurities. They need to be washed with deionized water to neutrality (pH 6-8) and dried before use to prevent impurities from migrating to the coating surface and affecting water resistance or insulation.

[0112] Drying treatment module: removes free water or crystal water in solid raw materials (such as pigments and fillers that may absorb moisture due to the storage environment) to prevent moisture from causing bubbles and stratification in coating production (water and solvent-based resins have poor compatibility), or affecting coating curing (such as moisture will hinder the reaction of amine curing agents in epoxy resins).

[0113] Crushing processing module: mechanical crushing or frozen crushing.

[0114] Grinding treatment module: Through high-speed stirring, the solid particles are wetted by the base material (resin + solvent), breaking the surface tension and preliminarily dispersing the agglomerates.

[0115] Refining treatment module: After preliminary dispersion, the particles are further ground to the target particle size (in anti-fouling flashover coatings, the filler particle size usually needs to be controlled at 5-50μm, and under special requirements, it needs to be less than 10μm) to ensure that the coating is smooth and has uniform performance (for example, small particle size can improve arc resistance and reduce surface defects).

[0116] The liquid raw materials include a filtration and impurity removal module, a dehydration effluent treatment module, a heating and viscosity reduction treatment module, and a metering treatment module.

[0117] Filtration and impurity removal module: Liquid raw materials (such as base resins, diluents, liquid additives, etc.) may contain tiny particles, mechanical impurities or precipitation generated during storage, which need to be removed by filtration.

[0118] Dehydration water treatment module: If the liquid raw material contains trace water, it will affect the stability of the coating (such as causing poor curing and coating blistering), and it needs to be vacuum dehydration treated: stir at 60-80℃ and vacuum degree -0.09MPa for 1-2 hours until the moisture content is ≤0.1%.

[0119] Heating viscosity reduction treatment module: Some liquid raw materials (such as epoxy resins and silicone intermediates) have high viscosity (>10,000 mPa·s) at room temperature, which is not conducive to subsequent mixing. They need to be heated to a specific temperature to reduce the viscosity. The heating temperature is usually 40-80°C (adjusted according to the heat resistance of the raw material to avoid exceeding its thermal decomposition temperature). Heating is carried out in a jacketed reactor or water bath while slowly stirring to achieve a uniform temperature.

[0120] Metering and processing module: The ratio of liquid raw materials has a great influence on the performance of the coating (for example, the ratio of resin to curing agent directly determines the degree of curing). High-precision equipment is required for measurement. Use an electronic scale (accuracy ±0.1g) or a flow meter (suitable for low-viscosity liquids) to add the raw materials into the stirring tank in sequence according to the formula ratio. Record the amount of each batch to ensure that the error is ≤0.5%.

[0121] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can

[0122] Within the technical scope of the present invention, the technical solution and inventive concept of the present invention may be replaced or modified equivalently.

[0123] Any changes should be included in the protection scope of the present invention.

Claims

1. A method for preparing an anti-pollution flashover coating for coating power equipment, characterized in that: The preparation method comprises the following steps: Step S1, preparing materials; Step S2, proportioning and weighing; Step S3: raw material pretreatment.

2. The method for preparing an anti-pollution flashover coating for coating power equipment according to claim 1, characterized in that: Said step S1, material preparation refers to preparing base material raw materials, functional filler raw materials, auxiliary agent raw materials, and auxiliary raw materials; The step S2, proportioning and weighing refers to scientifically proportioning the base material raw materials, functional filler raw materials, auxiliary agent raw materials, and auxiliary raw materials according to their differences, and accurately weighing the proportioned base material raw materials, functional filler raw materials, auxiliary agent raw materials, and auxiliary raw materials using a weighing device; Said step S3, raw material pretreatment refers to the pretreatment of base material raw materials, functional filler raw materials, auxiliary agent raw materials, and auxiliary raw materials, including raw material classification, raw material mixing, and defoaming treatment.

3. The method for preparing an anti-pollution flashover coating for coating power equipment according to claim 2, characterized in that: The raw material classification refers to the classification into solid raw materials and liquid raw materials according to the different states of base raw materials, functional filler raw materials, auxiliary raw materials and auxiliary raw materials; The raw material mixing refers to putting the processed base material, functional filler material, auxiliary agent material and auxiliary material into the stirring equipment respectively for stirring and mixing; The defoaming treatment refers to eliminating air bubbles mixed in during the production or construction process of the coating.

4. The method for preparing an anti-pollution flashover coating for coating power equipment according to claim 3, characterized in that: The base material raw material includes one or a mixture of two or more of ethanol, propylene glycol, ethylene glycol, and methanol as a co-solvent.

5. The method for preparing an anti-pollution flashover coating for coating power equipment according to claim 4, characterized in that: The functional filler includes one or a mixture of two or more of aluminum hydroxide, magnesium hydroxide, titanium dioxide, and modified mica powder.

6. The method for preparing an anti-pollution flashover coating for coating power equipment according to claim 1, characterized in that: The weight proportion of the base material raw material is 10%-50%, the weight proportion of the functional filler raw material is 12%-30%, and the weight proportion of the auxiliary agent raw material is 1%-5% to obtain a coating semi-finished product A.

7. The method for preparing an anti-pollution flashover coating for coating power equipment according to claim 6, characterized in that: The content of the base material raw material is 40%-49%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary agent raw material is 1%-5% to obtain a coating semi-finished product B.

8. The method for preparing an anti-pollution flashover coating for coating power equipment according to claim 7, characterized in that: The content of the base material raw material is 30%-40%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary agent raw material is 1%-5% to obtain a coating product C.

9. The method for preparing an anti-pollution flashover coating for coating power equipment according to claim 8, characterized in that: The content of the base material raw material is 15%-30%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary agent raw material is 1%-5% to obtain a coating product D.

10. The method for preparing an anti-pollution flashover coating for coating electric power equipment according to claim 9, characterized in that: The content of the base material raw material is 10%-15%, the content of the functional filler raw material is 12%-30%, and the content of the auxiliary agent raw material is 1%-5% to obtain a coating product E.

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