Prtv nano lotus leaf anti-pollution flashover coating and preparation method thereof

Abstract

The application relates to the field of paint technology, in particular to a PRTV nano lotus leaf anti-flashover paint, which comprises the following components in percentage by mass: epoxy resin 35-40%, polyurethane resin 15-20%, aluminum powder 10-15%, diatomite 5-10%, fumed silica 1-3%, butyl acetate 10-15%, methyl isobutyl ketone 5-10%, silane coupling agent 1-2%, wet curing agent 2-4%, waterproof agent 1-2%, wetting agent 0.5-1%, corresponding additives are added in the PRTV paint, so that the PRTV paint can be effectively combined with the surface everywhere and smoothly cured under the wet surface and environment, and the possibility of quality problems such as early peeling of the coating is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coating technology, in particular to a PRTV nano-leaf anti-pollution flashover coating and a preparation method thereof. BACKGROUND

[0002] Pollution flashover refers to that impurities attached to the surface of power equipment dissolve in water in humid environment such as rainy season, so that a conductive film is formed on the surface of the power equipment, the insulation performance of the surface of the electrical equipment is reduced, and the power equipment is prone to discharge. In order to reduce the possibility of pollution flashover, a layer of RTV or PRTV hydrophobic coating is generally coated on the surface of the power equipment to prevent impurities and water from combining to form a conductive film.

[0003] Compared with RTV coating, PRTV coating has improved adhesion, service life and hydrophobicity, and micron-sized powder is added to the PRTV coating to form small protrusions on the surface of the coating, so as to improve the hydrophobicity of the PRTV coating. For example, a pollution flashover resistant coating capable of achieving self-cleaning effect and a preparation method thereof are disclosed in CN103131240A.

[0004] For the related technology in the above, in a humid environment, such as light rain, even if the surface to be coated is dried, there will still be a small amount of moisture on the surface to be coated. At this time, if the PRTV coating is directly coated, the quality problem of easy peeling of the coating in the later stage will occur. SUMMARY

[0005] In order to prevent the quality problem of peeling of the coating after coating on a humid surface, the present application provides a PRTV nano-leaf anti-pollution flashover coating and a preparation method thereof.

[0006] In a first aspect, the PRTV nano-leaf anti-pollution flashover coating provided by the present application adopts the following technical solution.

[0007] A PRTV nano-leaf anti-pollution flashover coating, by mass percentage, comprises the following components: epoxy resin 35-40%, polyurethane resin 15-20%, aluminum powder 10-15%, diatomite 5-10%, fumed silica 1-3%, butyl acetate 10-15%, methyl isobutyl ketone 5-10%, silane coupling agent 1-2%, wet curing agent 2-4%, waterproof agent 1-2%, wetting agent 0.5-1%.

[0008] By adopting the above technical scheme, the silane coupling agent improves the adhesion between the coating and the coated surface, the wet curing agent improves the ability of the coating to uniformly cure in a humid environment, the waterproof agent improves the water resistance of the coating, and the wetting agent improves the performance of the coating to fully spread on a humid surface, so that the quality of the coating formed by the PRTV coating of the present application in a humid environment is not easily affected, and the coating is not easily peeled off later.

[0009] Optionally, the silane coupling agent is vinyl triethoxysilane, the wet curing agent is polyamide, the waterproof agent is paraffin, and the wetting agent is an anionic wetting agent.

[0010] Optionally, the mass percentage of the silane coupling agent is 2%, the mass percentage of the wet curing agent is 4%, the mass percentage of the waterproof agent is 2%, and the mass percentage of the wetting agent is 1%.

[0011] By adopting the above technical scheme, the optimal type and content of the additive are selected to increase the adhesion between the coating and the coated surface, so that the coating is less likely to be peeled off.

[0012] In a second aspect, the present application provides a PRTV nano lotus leaf anti-pollution flash coating preparation method using the following technical scheme.

[0013] A PRTV nano lotus leaf anti-pollution flash coating preparation method uses the above-mentioned PRTV nano lotus leaf anti-pollution flash coating, and specifically includes the following steps.

[0014] Step one, add epoxy resin and polyurethane resin to the stirring equipment, then add butyl acetate and methyl isobutyl ketone at a speed of V 低 Stir until completely dissolved and keep at room temperature;

[0015] Step two, add aluminum powder and diatomite to the stirring equipment in batches at a speed of V 高 Stir until uniformly dispersed and keep at room temperature;

[0016] Step three, add fumed silica to the stirring equipment at a speed of V 中 Stir until the coating is thick and keep at room temperature;

[0017] Step four, add the silane coupling agent, wet curing agent, waterproof agent, and wetting agent to the stirring equipment and stir until uniformly dispersed, and keep at room temperature;

[0018] Step five, keep V 高 Stir for a specified time and keep at room temperature;

[0019] The stirring speed V 低 <V 中 <V 高 .

[0020] By adopting the technical scheme, the film-forming material, the solvent, the pigment and filler, the thickening agent and the four kinds of additives are sequentially added and stirred at corresponding stirring speeds, so that the solvent components are uniformly dispersed and the quality of each part of the paint formed is uniform.

[0021] Optionally, the V 低 is in the range of 100-200 rpm, the V 中 is in the range of 300-500 rpm, and the V 高 is in the range of 600-800 rpm.

[0022] By adopting the technical scheme, the appropriate stirring speed is selected as needed.

[0023] Optionally, the four kinds of additives, i.e., the silane coupling agent, the moisture curing agent, the waterproof agent and the wetting agent, are sequentially added in the fourth step, and the V 低 is maintained during the addition of each kind of additive, the V 中 is maintained after the addition of each kind of additive is completed, and the stirring is maintained for a predetermined time until the additives are uniformly dispersed.

[0024] By adopting the technical scheme, the four kinds of additives are sequentially added, and each kind of additive is fully stirred before the next kind of additive is added, so that the four kinds of additives in the paint are uniformly dispersed.

[0025] Optionally, the stirring device comprises a stirring kettle for placing each component of the paint, a stirrer detachably connected to the stirring kettle, a screw metering pump for one-to-one corresponding and quantitative delivery of each liquid component of the paint to the stirring kettle, and five quantitative feeders for one-to-one corresponding and quantitative delivery of each solid component of the paint to the stirring kettle, and the stirrer, the quantitative feeder and the screw metering pump are electrically connected with a controller.

[0026] By adopting the technical scheme, each component can be accurately added to the stirring kettle for stirring and preparation each time the paint is prepared.

[0027] Optionally, the stirring kettle comprises an inner cylinder for placing each component of the paint and an outer cylinder sleeved and detachably connected to the inner cylinder, a heat exchange pipe capable of passing a constant temperature medium is detachably connected between the outer cylinder and the inner cylinder, a high and low temperature all-in-one machine is connected to the heat exchange pipe, and heat-conducting rubber is arranged between the heat exchange pipe and the inner cylinder.

[0028] By adopting the technical scheme, even if the paint is heated during stirring, the heat of the paint is transferred to the medium flowing in the heat exchange pipe through the heat-conducting rubber, and when the temperature is low, the heat in the heat exchange pipe can be transferred to the inner cylinder, so that the paint can be kept at room temperature during preparation, and the paint is not easy to be cured in advance or the components of the paint are not easy to be uniformly dispersed after stirring, so that the preparation process of the paint can be smoothly carried out.

[0029] Optionally, the heat exchange pipe is annular and arranged in plurality, the heat conductive rubber comprises a plurality of annular sleeve pieces and a sleeve piece formed on the outer surface of the sleeve piece and located between two adjacent heat exchange pipes, the sleeve piece is attached to the inner wall of the outer sleeve and the heat exchange pipe, and the outer diameter of the inner sleeve is greater than the inner diameter of the sleeve piece.

[0030] By adopting the above technical scheme, when the inner sleeve is put into the outer sleeve, the sleeve piece is tightly attached to the inner sleeve and expands, so that the sleeve piece is squeezed, the sleeve piece expands towards the two adjacent heat exchange pipes, so that the sleeve piece and the inner sleeve and the heat exchange pipe maintain a larger contact area and are tightly attached, the sleeve piece and the two adjacent heat exchange pipes maintain a larger contact area and are tightly attached, so that the paint in the inner sleeve and the heat exchange pipe can be transmitted in time.

[0031] Optionally, the inner sleeve is detachably connected with a temperature sensor for detecting the temperature of the paint in the inner sleeve, and the temperature sensor and the high and low temperature all-in-one machine are electrically connected to the controller.

[0032] When the temperature value T detected by the temperature sensor is greater than or less than the preset normal temperature T 测 , T 常 = T 差 = T 测 -T 常 , the high and low temperature all-in-one machine sends the temperature T 介 of the medium in the heat exchange pipe to T 常 = T 差 .

[0033] By adopting the above technical scheme, the temperature of the paint is monitored in real time, and the temperature in the heat exchange pipe can be adjusted adaptively according to the difference between the temperature value of the paint and the preset normal temperature value, so that the temperature of the paint can be quickly adjusted to the preset normal temperature value, and the temperature of the paint is not easily adjusted excessively, and the temperature of the paint is not easily fluctuated greatly.

[0034] In summary, the present application includes at least the following beneficial effects:

[0035] The silane coupling agent improves the adhesion of the paint and the coated surface, the moisture curing agent improves the ability of the paint to uniformly cure in a humid environment, the waterproof agent improves the water resistance of the coating, and the wetting agent improves the performance of the paint to fully spread on a wet surface, so that the quality of the coating formed by the PRTV paint of the present application in a humid environment is not easily affected, and the paint is not easily peeled off later. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a flowchart of a preparation method of a PRTV nano lotus leaf anti-flashover paint of the present application;

[0037] Figure 2 is a cross-sectional structure schematic diagram of a stirring tank;

[0038] Figure 3 is a system block diagram of the control part in the stirring device of the present application;

[0039] Figure 4 is a logic block diagram of temperature regulation in the stirring kettle of the present application.

[0040] Legend: 1, stirring kettle; 2, stirrer; 3, controller; 4, dosing machine; 41, screw metering pump; 42, inner cylinder; 43, outer cylinder; 44, heat exchange pipe; 45, heat-conducting rubber; 46, cylinder-pasting piece; 47, pipe-pasting piece; 48, temperature sensor; 49, high and low temperature all-in-one machine. DETAILED DESCRIPTION

[0041] The present application will be further described in detail below with reference to the accompanying drawings.

[0042] The present application discloses a PRTV nano lotus leaf anti-pollution flash coating, which comprises the following components in percentage by mass:

[0043] epoxy resin 35-40%, polyurethane resin 15-20%, aluminum powder 10-15%, diatomite 5-10%, fumed silica 1-3%, butyl acetate 10-15%, methyl isobutyl ketone 5-10%, silane coupling agent 1-2%, wet curing agent 2-4%, waterproof agent 1-2%, wetting agent 0.5-1%.

[0044] The epoxy resin and polyurethane resin are used as film-forming substances, the aluminum powder and diatomite are used as pigments and fillers, the butyl acetate and methyl isobutyl ketone are used as solvents, the fumed silica is used as a thickening agent, the silane coupling agent improves the adhesion of the coating and the coated surface, the wet curing agent improves the ability of the coating to achieve uniform curing in a humid environment, the waterproof agent improves the water resistance of the coating, and the wetting agent improves the performance of the coating to fully spread on a humid surface. In addition, the silane coupling agent can be γ-aminopropyl triethoxysilane or vinyl triethoxysilane, the wet curing agent can be isocyanate or polyamide, the waterproof agent can be organic silicon waterproof agent or paraffin, and the wetting agent can be non-ionic wetting agent or anionic wetting agent.

[0045] The present application also discloses a preparation method of the PRTV nano lotus leaf anti-pollution flash coating, which refers to Figure 1 and specifically includes the following steps.

[0046] Step one, add epoxy resin and polyurethane resin into the stirring device, and then slowly add butyl acetate and methyl isobutyl ketone at a speed of V 低 stir until completely dissolved, and keep the temperature constant;

[0047] Step two, add aluminum powder and diatomite into the stirring device in batches at a speed of V 高Stir until evenly dispersed, keep normal temperature;

[0048] Step three, add fumed silica into the stirring device and stir at speed V 中 Stir until the paint is thick, keep normal temperature;

[0049] Step four, add silane coupling agent, moisture curing agent, waterproof agent and wetting agent into the stirring device and stir until evenly dispersed, keep normal temperature;

[0050] Step five, keep V 高 Stir for 10-15 min, keep normal temperature.

[0051] Wherein, V 低 is in the range of 100-200 rpm, V 中 is in the range of 300-500 rpm, V 高 is in the range of 600-800 rpm, and normal temperature is in the range of 20-25℃.

[0052] In addition, in step four, the four kinds of additives, namely, silane coupling agent, moisture curing agent, waterproof agent and wetting agent, are added in sequence and slowly, V 低 is kept during the addition of each kind of additive, and V 中 is kept after the addition of each kind of additive is completed.

[0053] Referring to Figure 2 and Figure 3 , wherein the stirring device comprises a stirring kettle 1 placed vertically, a stirrer 2 detachably connected in the stirring kettle 1, and a plurality of screw metering pumps 41 and a plurality of dosing machines 4 communicated with the stirring kettle 1, each screw metering pump 41 sending a corresponding amount of paint liquid component into the stirring kettle 1, and each dosing machine 4 sending a corresponding amount of paint solid powder particle component into the stirring kettle 1, the stirrer 2, the dosing machines 4 and the screw metering pumps 41 being electrically connected with a controller 3, so that the configuration of the paint can be carried out according to the preset program in the controller 3, so as to reduce the error in the preparation of each paint.

[0054] Referring to Figure 2 and Figure 3, the stirring kettle 1 comprises an outer cylinder 43 and an inner cylinder 42 put into the outer cylinder 43, the outer cylinder 43 can be provided with heat insulation foamed plastic to realize heat insulation, and the inner cylinder 42 is made of aluminum alloy with high thermal conductivity. A plurality of heat exchange pipes 44 are detachably connected to the inner wall of the outer cylinder 43 in the vertical direction, each heat exchange pipe 44 is annular and internally penetrates water, and all the heat exchange pipes 44 are communicated with the high-low temperature all-in-one machine 49, so that the water in the heat exchange pipe 44 is maintained at a preset normal temperature. The heat-conducting rubber 45 is arranged between the heat exchange pipe 44 and the inner cylinder 42, the heat-conducting rubber 45 comprises a plurality of annular cylinder pieces 46 and pipe pieces 47, the inner diameter of the cylinder piece 46 in the natural state is smaller than the outer diameter of the inner cylinder 42, each cylinder piece 46 is attached to the side of the two heat exchange pipes 44 towards the inner cylinder 42, and the outer diameter of the bottom end of the inner cylinder 42 is the smallest, so that the bottom end of the inner cylinder 42 is smoothly inserted into the cylinder piece 46. The pipe piece 47 is formed on the circumferential outer surface of the cylinder piece 46, the pipe piece 47 is located between the adjacent two heat exchange pipes 44 and is attached to the upper part or the lower part of the heat exchange pipe 44, and the circumferential outer wall of the pipe piece 47 is attached to the inner wall of the outer cylinder 43, so that when the cylinder piece 46 is extruded and deformed by the inner cylinder 42, the pipe piece 47 is also extruded and deformed to be more closely attached to the heat exchange pipe 44.

[0055] Referring to Figure 3 and Figure 4 , the inner wall of the upper part of the inner cylinder 42 is detachably connected to the non-contact temperature sensor 48, the temperature sensor 48 and the high-low temperature all-in-one machine 49 are electrically connected to the controller 3. When the temperature value T 测 detected by the temperature sensor 48 is greater than or less than the preset normal temperature T 常 , T 差 =T 测 -T 常 , the high-low temperature all-in-one machine 49 sends the temperature T 介 of the medium in the heat exchange pipe 44 to T 常 =T 差 . And the suitable T 常 in the coating configuration process is a range, and the preset value of T 常 in the controller 3 is close to the median of the suitable range of T 常 , so that even if the coating temperature fluctuates around T 常 , the coating temperature also meets the temperature requirement during preparation.

[0056] The PRTV nano lotus leaf anti-flashover coating and the preparation method thereof will be described below by taking various embodiments as examples.

[0057] Embodiment one:

[0058] Take epoxy resin 380 grams, polyurethane resin 180 grams, aluminum powder 120 grams, diatomite 80 grams, fumed silica 20 grams, butyl acetate 91.5 grams, methyl isobutyl ketone 61 grams, gamma-aminopropyl triethoxysilane 15 grams, isocyanate 30 grams, silicone waterproof agent 15 grams, non-ionic wetting agent 7.5 grams, according to the above PRTV nano lotus anti-pollution flashover coating preparation method to obtain the corresponding PRTV coating for subsequent test use, and V 低 150 rpm, V 中 400 rpm, V 高 800 rpm, constant temperature is 22℃, V 高 stirring 15 min, keep V 中 stirring 10 min.

[0059] Example two:

[0060] The difference between example one and example two is that epoxy resin 360 grams, polyurethane resin 170 grams, aluminum powder 140 grams, diatomite 70 grams, fumed silica 15 grams, butyl acetate 115 grams, methyl isobutyl ketone 80 grams, gamma-aminopropyl triethoxysilane 10 grams, isocyanate 25 grams, silicone waterproof agent 10 grams, non-ionic wetting agent 5 grams are taken.

[0061] Example three:

[0062] The difference between example one and example three is that epoxy resin 400 grams, polyurethane resin 200 grams, aluminum powder 100 grams, diatomite 60 grams, fumed silica 20 grams, butyl acetate 79 grams, methyl isobutyl ketone 51 grams, gamma-aminopropyl triethoxysilane 20 grams, isocyanate 40 grams, silicone waterproof agent 20 grams, non-ionic wetting agent 10 grams are taken.

[0063] Example four:

[0064] The difference between example one and example four is that epoxy resin 380 grams, polyurethane resin 180 grams, aluminum powder 120 grams, diatomite 80 grams, fumed silica 20 grams, butyl acetate 91.5 grams, methyl isobutyl ketone 61 grams, vinyl triethoxysilane 15 grams, polyamide 30 grams, paraffin 15 grams, anionic wetting agent 7.5 grams are taken.

[0065] Example five:

[0066] The difference between example one and example five is that epoxy resin 360 grams, polyurethane resin 170 grams, aluminum powder 140 grams, diatomite 70 grams, fumed silica 15 grams, butyl acetate 115 grams, methyl isobutyl ketone 80 grams, vinyl triethoxysilane 10 grams, polyamide 25 grams, paraffin 10 grams, anionic wetting agent 5 grams are taken.

[0067] Example six:

[0068] The difference between Example one and Example six is that 400 grams of epoxy resin, 200 grams of polyurethane resin, 100 grams of aluminum powder, 60 grams of diatomite, 20 grams of fumed silica, 79 grams of butyl acetate, 51 grams of methyl isobutyl ketone, 20 grams of vinyl triethoxysilane, 40 grams of polyamide, 20 grams of paraffin wax, and 10 grams of anionic wetting agent are weighed.

[0069] Comparative example one:

[0070] The difference between Example one and Comparative example one is that 350 grams of epoxy resin, 150 grams of polyurethane resin, 100 grams of aluminum powder, 50 grams of diatomite, 10 grams of fumed silica, 204 grams of butyl acetate, and 136 grams of methyl isobutyl ketone are weighed.

[0071] Comparative example two:

[0072] The difference between Comparative example one and Comparative example two is that 400 grams of epoxy resin, 200 grams of polyurethane resin, 150 grams of aluminum powder, 60 grams of diatomite, 20 grams of fumed silica, 100 grams of butyl acetate, and 70 grams of methyl isobutyl ketone are weighed.

[0073] Examples one to six and Comparative examples one and two are tested accordingly, and at the same time, drying time test, water resistance test, and adhesion test are performed in sequence. In the drying time test, the surface of the same insulating material, such as ceramic, is coated to form a 0.5mm thick coating layer in an air circulation environment with a humidity of 80-95%, and the surface dry time and the real dry time of the coating layer of each example and each comparative example are tested. In the water resistance test, after the coating layer of each example and each comparative example is dried, the insulating material coated with the coating layer is soaked in water for 24h, and then whether the coating layer has peeling or blistering is observed. In the adhesion test, after the water resistance test is completed, the adhesion of each coating layer on the surface of the insulating material is detected using the pull-off method. The specific test results are as follows.

[0074]

[0075] As can be seen from the above table, the different types of silane coupling agent, wet curing agent, waterproof agent, and wetting agent in the present application have no effect on the drying time of the coating layer, and the higher the content of the four types of additives in the coating, the faster the drying speed of the coating. Moreover, the coating prepared by using additives of different types and contents can successfully pass the water resistance test. In addition, when the silane coupling agent is vinyl triethoxysilane, the wet curing agent is polyamide, the waterproof agent is paraffin wax, the wetting agent is anionic wetting agent, and the content of the four types of additives is as high as possible within the corresponding value range of the present application, the adhesion of the coating layer is also relatively larger.

[0076] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A method for preparing PRTV nano-leaf anti-pollution flashover coating, characterized in that: Specifically comprising the following steps: Step one, in the stirring device, add epoxy resin and polyurethane resin, then add butyl acetate and methyl isobutyl ketone, at speed V 低 Stir until completely dissolved, keep at room temperature; Step two, add the aluminum powder and diatomite into the stirring device in batches and at speed V 高 Stir until evenly dispersed, keep at room temperature; Step three, add fumed silica to the stirring apparatus and at speed V 中 Stir until the paint is thick and keep at room temperature; Step four, the silane coupling agent, wet curing agent, waterproof agent and wetting agent are added into the stirring device and stirred to be uniformly dispersed, and the normal temperature is kept; Step five, keep V 高 Stir for a certain period of time, keep normal temperature; Wherein, the stirring speed V 低 <V 中 <V 高 ; The stirring device comprises a stirring kettle (1) for placing each component of the paint, a stirrer (2) detachably connected to the stirring kettle (1), a screw metering pump (41) for one-to-one corresponding quantitative delivery of each liquid component in the paint to the stirring kettle (1), five quantitative feeders (4) for one-to-one corresponding quantitative delivery of each solid component in the paint to the stirring kettle (1), and the stirrer (2), the quantitative feeder (4) and the screw metering pump (41) are electrically connected with the controller (3); The stirring kettle (1) comprises an inner cylinder (42) for placing each component of the paint and an outer cylinder (43) sleeved and detachably connected to the inner cylinder (42), and a heat exchange pipe (44) capable of passing into a constant temperature medium is detachably connected between the outer cylinder (43) and the inner cylinder (42), the heat exchange pipe (44) is communicated with a high-low temperature all-in-one machine (49), and heat-conducting rubber (45) is arranged between the heat exchange pipe (44) and the inner cylinder (42); The inner cylinder (42) is detachably connected with a temperature sensor (48) for detecting the temperature of the paint in the inner cylinder (42), and the temperature sensor (48) and the high-low temperature all-in-one machine (49) are electrically connected to the controller (3); When the temperature value T detected by the temperature sensor (48) is greater than or less than the preset normal temperature T 测 , the temperature T of the medium in the heat exchange pipe (44) is obtained 常 . 差 =T 测 -T 常 , the high and low temperature all-in-one machine (49) sends the temperature T 介 = T 常 -T 差 of the medium in the heat exchange pipe (44). The prepared PRTV nano lotus leaf anti-flashover paint comprises the following components in percentage by mass: epoxy resin 35-40%, polyurethane resin 15-20%, aluminum powder 10-15%, diatomite 5-10%, fumed silica 1-3%, butyl acetate 10-15%, methyl isobutyl ketone 5-10%, silane coupling agent 1-2%, wet curing agent 2-4%, waterproof agent 1-2%, and wetting agent 0.5-1%. The silane coupling agent is vinyltriethoxysilane, the wet curing agent is polyamide, the waterproof agent is paraffin, and the wetting agent is an anionic wetting agent.

2. The method for preparing a PRTV nano lotus leaf anti-flashover coating according to claim 1, characterized in that: The mass percentage of the silane coupling agent is 2%, the mass percentage of the wet curing agent is 4%, the mass percentage of the waterproof agent is 2%, and the mass percentage of the wetting agent is 1%.

3. The method for preparing a PRTV nano lotus leaf anti-flashover coating according to claim 1, characterized in that: The V 低 ranges from 100 to 200 rpm, V 中 ranges from 300 to 500 rpm, V 高 ranges from 600 to 800 rpm.

4. The method for preparing a PRTV nano lotus leaf anti-flashover coating according to claim 1, characterized in that: The four kinds of additives, silane coupling agent, wet curing agent, waterproof agent and wetting agent, are added in sequence in step four, and the V 低 Stirring is performed, and the V 中 Stirring is performed for a certain period of time until the additives are uniformly dispersed.

5. The PRTV nano-leaf anti-fouling flashover coating preparation method according to claim 1, characterized in that: The heat exchange pipe (44) is annular and arranged in plurality, the heat-conducting rubber (45) comprises a plurality of annular tube sticking pieces (46) and a pipe sticking piece (47) formed on the outer surface of the tube sticking piece (46) and located between adjacent two heat exchange pipes (44), the pipe sticking piece (47) is attached to the inner wall of the outer cylinder (43) and the heat exchange pipe (44), and the outer diameter of the inner cylinder (42) is greater than the inner diameter of the tube sticking piece (46).

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