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

Abstract

The invention relates to the technical field of coatings, in particular to a PRTV nano lotus leaf anti-pollution flashover coating which comprises the following components in percentage by mass: 35-40% of epoxy resin, 15-20% of polyurethane resin, 10-15% of aluminum powder, 5-10% of diatomite, 1-3% of fumed silica, 10-15% of butyl acetate, 5-10% of methyl isobutyl ketone, 1-2% of a silane coupling agent, 2-4% of a wet curing agent, 1-2% of a waterproof agent and 0.5-1% of a wetting agent. Therefore, the PRTV coating can be effectively, sufficiently and uniformly combined with all phases of a coated surface on a humid surface in an environment and is smoothly cured, and the possibility of the quality problem that a coating falls off too early is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of coating technologies, and particularly to a PRTV nano lotus leaf anti-fouling and anti-flashover coating and a preparation method thereof. Background Art

[0002] Flashover refers to the fact that impurities attached to the insulating surface of electrical equipment dissolve in water in humid environments such as the rainy season, forming a conductive film on the insulating surface of the electrical equipment, reducing the insulation performance of the surface of the electrical equipment, and causing the electrical equipment to be prone to discharge phenomena. To reduce the likelihood of flashover, a hydrophobic coating of RTV or PRTV is generally applied to the surface of electrical equipment to prevent impurities and moisture from combining to form a conductive film.

[0003] The PRTV coating has been improved in terms of adhesion, service life, and hydrophobicity compared with the RTV coating, and micron-sized powders are added to the PRTV coating to form tiny protrusions on the coating surface similar to those on the lotus leaf surface to enhance the hydrophobicity of the PRTV coating. For example, a self-cleaning anti-flashover coating and a preparation method thereof with a publication number of CN103131240A.

[0004] In view of the above related technologies, in a humid environment, such as in light rain, even if the surface to be coated is dried, there will inevitably be a small amount of moisture on the surface to be coated. At this time, if the PRTV coating is directly applied, there will easily be a quality problem that the coating is prone to peeling off later. Summary of the Invention

[0005] In order to avoid the quality problem that the coating is prone to peeling off after being applied on a humid surface, the present application provides a PRTV nano lotus leaf anti-fouling and anti-flashover coating and a preparation method thereof.

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

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

[0008] By adopting the above technical solutions, the silane coupling agent improves the adhesion between the coating and the coated surface, the moisture-curing agent improves the ability of the coating to achieve uniform curing in a humid environment, the waterproofing agent improves the water resistance of the coating, and the wetting agent improves the performance of the coating to spread fully on a wet surface, so that the quality of the PRTV coating formed in a humid environment is not easily affected greatly and is not likely to fall off easily in the later stage.

[0009] Optionally, the silane coupling agent is vinyltriethoxysilane, the moisture-curing agent is polyamide, the waterproofing 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 moisture-curing agent is 4%, the mass percentage of the waterproofing agent is 2%, and the mass percentage of the wetting agent is 1%.

[0011] By adopting the above technical solutions, the optimal types and content schemes of the additives are selected, so that the adhesion between the coating and the coated surface is large, and the coating is less likely to fall off.

[0012] In a second aspect, a method for preparing a PRTV nano lotus leaf anti-fouling and anti-flashover coating provided by the present application adopts the following technical solutions.

[0013] A method for preparing a PRTV nano lotus leaf anti-fouling and anti-flashover coating uses the above-mentioned PRTV nano lotus leaf anti-fouling and anti-flashover coating, and specifically includes the following steps.

[0014] Step 1: Add epoxy resin and polyurethane resin to a stirring device, and then add butyl acetate and methyl isobutyl ketone, and stir at a speed of V 低 until completely dissolved, and keep at room temperature; Step 2: Add aluminum powder and diatomaceous earth to the stirring device in batches and stir at a speed of V 高 until evenly dispersed, and keep at room temperature; Step 3: Add fumed silica to the stirring device and stir at a speed of V 中 until the coating becomes viscous, and keep at room temperature; Step 4: Add the silane coupling agent, the moisture-curing agent, the waterproofing agent and the wetting agent to the stirring device and stir until evenly dispersed, and keep at room temperature; Step 5: Keep stirring for a set time at V 高 and keep at room temperature; wherein, the stirring speed V 低 <V 中 <V 高 .

[0015] By adopting the above technical scheme, film-forming substances, solvents, pigments, fillers, thickeners and four additives are added in sequence and stirred at corresponding stirring speeds so that the various components of the solvent are evenly dispersed and the quality of each part of the coating formed is uniform.

[0016] Optionally, the V 低 The range is 100~200rpm, V 中 The range is 300~500rpm, V 高 The range is 600~800rpm.

[0017] By adopting the above technical solution, a suitable stirring speed can be selected as needed.

[0018] Optionally, in step 4, the four additives of silane coupling agent, moisture curing agent, waterproofing agent and wetting agent are added in sequence, and V is maintained during the addition of each additive. 低 Stir and keep V 中 Stir for a given time until the additive is evenly dispersed.

[0019] By adopting the above technical solution, the four additives are added in sequence, and each additive is stirred sufficiently before the next additive is added, so that the four additives are evenly dispersed in the coating.

[0020] Optionally, the stirring equipment includes a stirring kettle for placing the various components of the coating, an agitator detachably connected to the stirring kettle, a screw metering pump for quantitatively conveying the liquid components in the coating to the stirring kettle one by one, and five quantitative feeders for quantitatively conveying the solid components in the coating to the stirring kettle one by one, and the agitator, quantitative feeder and screw metering pump are electrically connected to a controller.

[0021] By adopting the above technical solution, each component can be added into the stirring kettle more accurately for stirring and preparation each time the coating is prepared.

[0022] Optionally, the stirring kettle includes an inner cylinder for placing the various components of the coating and an outer cylinder which is sleeved and detachably connected to the inner cylinder. A heat exchange tube through which a constant temperature medium can pass is detachably connected between the outer cylinder and the inner cylinder. The heat exchange tube is connected to a high and low temperature integrated machine. A heat conductive rubber is provided between the heat exchange tube and the inner cylinder.

[0023] By adopting the above technical solution, even if the temperature of the paint rises during the stirring process, the heat of the paint will be transferred to the medium flowing in the heat exchange tube through the heat-conducting rubber, and when the temperature is low, the heat in the heat exchange tube can be transferred to the inner cylinder, so that the paint can maintain room temperature during the preparation process, and it is not easy for the paint to solidify prematurely or for the components of the paint to be difficult to disperse evenly after stirring, so that the preparation process of the paint can proceed smoothly.

[0024] Optionally, the heat exchange tubes are annular and several in number. The heat-conducting rubber includes several annular attaching cylinders and attaching pipe members formed on the outer surface of the attaching cylinders and located between adjacent two heat exchange tubes. The attaching pipe members are attached to the inner wall of the outer cylinder and the heat exchange tubes, and the outer diameter of the inner cylinder is greater than the inner diameter of the attaching cylinders.

[0025] By adopting the above technical solution, when the inner cylinder is placed corresponding to the outer cylinder, the attaching cylinders are closely attached to the inner cylinder and expand, so that the attaching pipe members are extruded. The attaching pipe members expand towards two adjacent heat exchange tubes, so that a large contact area is maintained and close attachment is achieved between the attaching cylinders, the inner cylinder and the heat exchange tubes, and a large contact area is maintained and close attachment is achieved between the attaching pipe members and two adjacent heat exchange tubes, so that the coating in the inner cylinder and the heat exchange tubes can be transferred in time.

[0026] Optionally, the inner cylinder is detachably connected with a temperature sensor for detecting the temperature of the coating in the inner cylinder, and the temperature sensor and the high and low temperature integrated machine are electrically connected to the controller; When the temperature value T 测 detected by the temperature sensor is greater than or less than the preset normal temperature T 常 , obtain T 差 = T 测 - T 常 , then the temperature T 介 of the medium fed into the heat exchange tubes by the high and low temperature integrated machine = T 常 - T 差 .

[0027] By adopting the above technical solution, the temperature of the coating can be monitored in real time, and the temperature in the heat exchange tubes can be adjusted adaptively according to the difference between the coating temperature value and the preset normal temperature value, so that the coating temperature can be adjusted to the preset normal temperature value relatively quickly, and the coating temperature is not easily over-adjusted and large fluctuations in the coating temperature are not likely to occur.

[0028] In summary, the present application includes at least the following beneficial effects: The silane coupling agent improves the adhesion between the coating and the coated surface, the moisture-curing agent improves the ability of the coating to achieve uniform curing in a humid environment, the waterproofing agent improves the water resistance of the coating, and the wetting agent improves the performance of the coating to fully spread on a wet surface, so that the quality of the coating formed by the PRTV coating of the present application in a humid environment is not easily greatly affected and is not likely to fall off later. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a flow block diagram of a preparation method of a PRTV nano lotus leaf anti-fouling and anti-flashover coating of the present application; Figure 2 is a schematic cross-sectional structure diagram of a stirring kettle; Figure 3It is the system block diagram of the control part in the stirring equipment of this application; Figure 4 It is the logic block diagram of temperature regulation in the stirring kettle of this application.

[0030] Explanation of reference numerals: 1. Stirring kettle; 2. Stirrer; 3. Controller; 4. Quantitative feeder; 41. Screw metering pump; 42. Inner cylinder; 43. Outer cylinder; 44. Heat exchange tube; 45. Heat-conducting rubber; 46. Cylinder-attaching part; 47. Pipe-attaching part; 48. Temperature sensor; 49. High and low temperature integrated machine. Detailed implementation manners

[0031] The following further elaborates on this application in conjunction with the attached drawings.

[0032] This application discloses a PRTV nano lotus leaf anti-fouling and anti-flashover coating, which includes the following components by mass percentage: 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%, moisture-curing agent 2 - 4%, waterproofing agent 1 - 2%, wetting agent 0.5 - 1%.

[0033] Epoxy resin and polyurethane resin are used as film-forming substances, aluminum powder and diatomite are used as pigment fillers, butyl acetate and methyl isobutyl ketone are used as solvents, fumed silica is used as a thickening agent, the silane coupling agent improves the adhesion between the coating and the coated surface, the moisture-curing agent improves the ability of the coating to achieve uniform curing in a humid environment, the waterproofing agent improves the water resistance of the coating, and the wetting agent improves the spreading performance of the coating on a wet surface. And, the silane coupling agent can be γ-aminopropyltriethoxysilane or vinyltriethoxysilane, the moisture-curing agent can be isocyanate or polyamide, the waterproofing agent can be silicone waterproofing agent or paraffin, and the wetting agent can be non-ionic wetting agent or anionic wetting agent.

[0034] This application also discloses a preparation method of a PRTV nano lotus leaf anti-fouling and anti-flashover coating, referring to Figure 1 , which specifically includes the following steps.

[0035] Step 1: Add epoxy resin and polyurethane resin into the stirring equipment, and then slowly add butyl acetate and methyl isobutyl ketone, and stir at a speed of V 低 until completely dissolved, and keep at normal temperature; Step 2: Add aluminum powder and diatomite into the stirring equipment in batches and stir at a speed of V 高 until evenly dispersed, and keep at normal temperature; Step 3: Add fumed silica into the stirring equipment and stir at a speed of V 中 until the coating becomes viscous, and keep at normal temperature; Step 4: Add the silane coupling agent, moisture curing agent, waterproofing agent, and wetting agent into a stirring device and stir until evenly dispersed, maintaining normal temperature; Step 5: Maintain V 高 Stir for 10 - 15 min, maintaining normal temperature.

[0036] wherein, V 低 ranges from 100 to 200 rpm, V 中 ranges from 300 to 500 rpm, V 高 ranges from 600 to 800 rpm, and the normal temperature ranges from 20 to 25 °C.

[0037] In addition, in Step 4, the four additives, namely the silane coupling agent, moisture curing agent, waterproofing agent, and wetting agent, are slowly added in sequence. During the addition of each additive, V 低 is used for stirring. After the addition of each additive is completed, V 中 is used for stirring for 5 - 10 min until the additives are evenly dispersed.

[0038] Refer to Figure 2 and Figure 3 , wherein the stirring device includes a stirring kettle 1 placed vertically. A stirrer 2 is detachably connected inside the stirring kettle 1. The stirring kettle 1 is also connected to several screw metering pumps 41 and several metering feeders 4. Each screw metering pump 41 feeds a corresponding certain amount of liquid component of the coating into the stirring kettle 1, and each metering feeder 4 feeds a corresponding certain amount of solid powder particle component of the coating into the stirring kettle 1. The stirrer 2, metering feeder 4, and screw metering pump 41 are electrically connected to a controller 3 so that the preparation of the coating can be carried out according to the preset program in the controller 3 to reduce the error occurring in the preparation of each coating.

[0039] Refer to Figure 2 and Figure 3, the stirring kettle 1 includes an outer cylinder 43 and an inner cylinder 42 placed in the outer cylinder 43. Heat-insulating foam plastic can be arranged in the outer cylinder 43 to achieve heat insulation, and the inner cylinder 42 is made of aluminum alloy with a high thermal conductivity coefficient. A plurality of heat exchange tubes 44 are detachably connected to the inner wall of the outer cylinder 43 along the vertical direction. Each heat exchange tube 44 is circular and has water flowing through it. All the heat exchange tubes 44 are connected to a high and low temperature all-in-one machine 49 so that the water in the heat exchange tubes 44 is maintained at a preset normal temperature. A heat-conducting rubber 45 is arranged between the heat exchange tubes 44 and the inner cylinder 42. The heat-conducting rubber 45 includes a plurality of circularly arranged cylinder-attaching parts 46 and pipe-attaching parts 47. The inner diameter of the cylinder-attaching parts 46 in the natural state is smaller than the outer diameter of the inner cylinder 42. Each cylinder-attaching part 46 is attached to the side of the two heat exchange tubes 44 facing the inner cylinder 42, and the outer diameter of the bottom end of the inner cylinder 42 is the smallest, so as to smoothly insert the bottom end of the inner cylinder 42 into the cylinder-attaching parts 46. The pipe-attaching parts 47 are formed on the circumferential outer surface of the cylinder-attaching parts 46. The pipe-attaching parts 47 are located between adjacent two heat exchange tubes 44 and are attached to the upper part or the lower part of the heat exchange tubes 44. The circumferential outer wall of the pipe-attaching parts 47 is attached to the inner wall of the outer cylinder 43, so that when the cylinder-attaching parts 46 are deformed by the extrusion of the inner cylinder 42, the pipe-attaching parts 47 are also extruded and thus fit more closely with the heat exchange tubes 44.

[0040] Refer to Figure 3 and Figure 4 , a non-contact temperature sensor 48 is detachably connected to the inner wall of the upper part of the inner cylinder 42. The temperature sensor 48 and the high and 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 , obtain T 差 =T 测 -T 常 , then the temperature T 介 of the medium fed into the heat exchange tubes 44 by the high and low temperature all-in-one machine 49 =T 常 -T 差 . And during the coating configuration process of this application, the appropriate T 常 is a range, and the preset value of T 常 in the controller 3 is the median close to the appropriate range of T 常 , so that even if the coating temperature fluctuates continuously near T 常 , the coating temperature also meets the temperature requirements during preparation.

[0041] The following takes each embodiment as an example to illustrate a PRTV nano lotus leaf anti-fouling and anti-flashover coating and its preparation method of this application.

[0042] Example 1:

[0043] Weigh 380 grams of epoxy resin, 180 grams of polyurethane resin, 120 grams of aluminum powder, 80 grams of diatomaceous earth, 20 grams of fumed silica, 91.5 grams of butyl acetate, 61 grams of methyl isobutyl ketone, 15 grams of γ-aminopropyltriethoxysilane, 30 grams of isocyanate, 15 grams of silicone waterproofing agent, and 7.5 grams of non-ionic wetting agent. Obtain the corresponding PRTV coating according to the above-mentioned preparation method of PRTV nano lotus leaf anti-fouling and anti-flashover coating for subsequent tests, and V 低 is 150 rpm, V 中 is 400 rpm, V 高 is 800 rpm, and the normal temperature is set at 22 °C. In step five, maintain V 高 stir for 15 minutes, and maintain V 中 stir for 10 minutes after each additive is added.

[0044] Example 2:

[0045] The difference from Example 1 is that 360 grams of epoxy resin, 170 grams of polyurethane resin, 140 grams of aluminum powder, 70 grams of diatomaceous earth, 15 grams of fumed silica, 115 grams of butyl acetate, 80 grams of methyl isobutyl ketone, 10 grams of γ-aminopropyltriethoxysilane, 25 grams of isocyanate, 10 grams of silicone waterproofing agent, and 5 grams of non-ionic wetting agent are weighed.

[0046] Example 3:

[0047] The difference from Example 1 is that 400 grams of epoxy resin, 200 grams of polyurethane resin, 100 grams of aluminum powder, 60 grams of diatomaceous earth, 20 grams of fumed silica, 79 grams of butyl acetate, 51 grams of methyl isobutyl ketone, 20 grams of γ-aminopropyltriethoxysilane, 40 grams of isocyanate, 20 grams of silicone waterproofing agent, and 10 grams of non-ionic wetting agent are weighed.

[0048] Example 4:

[0049] The difference from Example 1 is that 380 grams of epoxy resin, 180 grams of polyurethane resin, 120 grams of aluminum powder, 80 grams of diatomaceous earth, 20 grams of fumed silica, 91.5 grams of butyl acetate, 61 grams of methyl isobutyl ketone, 15 grams of vinyltriethoxysilane, 30 grams of polyamide, 15 grams of paraffin, and 7.5 grams of anionic wetting agent are weighed.

[0050] Example 5:

[0051] The difference from Example 1 is that 360 grams of epoxy resin, 170 grams of polyurethane resin, 140 grams of aluminum powder, 70 grams of diatomaceous earth, 15 grams of fumed silica, 115 grams of butyl acetate, 80 grams of methyl isobutyl ketone, 10 grams of vinyltriethoxysilane, 25 grams of polyamide, 10 grams of paraffin, and 5 grams of anionic wetting agent are weighed.

[0052] Example VI:

[0053] The difference from Example I is that 400 g of epoxy resin, 200 g of polyurethane resin, 100 g of aluminum powder, 60 g of diatomaceous earth, 20 g of fumed silica, 79 g of butyl acetate, 51 g of methyl isobutyl ketone, 20 g of vinyltriethoxysilane, 40 g of polyamide, 20 g of paraffin, and 10 g of anionic wetting agent are weighed.

[0054] Comparative Example I: The difference from Example I is that 350 g of epoxy resin, 150 g of polyurethane resin, 100 g of aluminum powder, 50 g of diatomaceous earth, 10 g of fumed silica, 204 g of butyl acetate, and 136 g of methyl isobutyl ketone are weighed, and the corresponding PRTV coatings are obtained according to Steps 1, 2, 3, and 5 in the above-mentioned preparation method of a PRTV nano lotus leaf anti-fouling and anti-flashover coating for subsequent tests.

[0055] Comparative Example II: The difference from Comparative Example I is that 400 g of epoxy resin, 200 g of polyurethane resin, 150 g of aluminum powder, 60 g of diatomaceous earth, 20 g of fumed silica, 100 g of butyl acetate, and 70 g of methyl isobutyl ketone are weighed.

[0056] Examples I to VI and Comparative Examples I and II are subjected to corresponding tests, and the drying time test, water resistance test, and adhesion test are carried out in sequence. Among them, the drying time test is carried out in an air-circulated environment with a humidity of 80 - 95% on the surface of the same insulating material, such as ceramic, to form a 0.5-mm-thick coating, and the surface drying time and actual drying time of the coatings of each example and each comparative example are tested. The water resistance test is to soak the insulating materials coated with each coating in water for 24 h after the coatings of each example and each comparative example are actually dry, and then observe whether the coatings fall off or blister. The adhesion test is to detect the adhesion of each coating on the surface of the insulating material by the pull-off method after the water resistance test. The specific test results are shown in the following table.

[0057]

[0058] As can be seen from the above table, the four kinds of auxiliaries, namely different types of silane coupling agents, moisture-curing agents, waterproofing agents, and wetting agents, in this application have no effect on the drying time of the coating, and the higher the content of the four kinds of auxiliaries in the coating, the faster the drying speed of the coating. And the coatings with different types and contents of auxiliaries can all pass the water resistance test smoothly. In addition, when the silane coupling agent is vinyltriethoxysilane, the moisture-curing agent is polyamide, the waterproofing agent is paraffin, the wetting agent is anionic wetting agent, and the content of the four kinds of auxiliaries is as high as possible within the corresponding value range in this application, the adhesion of the coating is relatively greater.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A PRTV nano lotus leaf anti-pollution flashover coating, characterized in that: Calculated by mass percentage, it includes the following components: 35-40% epoxy resin, 15-20% polyurethane resin, 10-15% aluminum powder, 5-10% diatomaceous earth, 1-3% fumed silica, 10-15% butyl acetate, 5-10% methyl isobutyl ketone, 1-2% silane coupling agent, 2-4% moisture curing agent, 1-2% waterproofing agent, and 0.5-1% wetting agent.

2. The PRTV nano lotus leaf anti-pollution flashover coating according to claim 1, characterized in that: The silane coupling agent is vinyl triethoxysilane, the moisture curing agent is polyamide, the waterproofing agent is paraffin, and the wetting agent is an anionic wetting agent.

3. The PRTV nano lotus leaf anti-pollution flashover coating according to claim 1, characterized in that: The mass percentage of the silane coupling agent is 2%, the mass percentage of the moisture curing agent is 4%, the mass percentage of the waterproofing agent is 2%, and the mass percentage of the wetting agent is 1%.

4. A method for preparing a PRTV nano lotus leaf anti-pollution flashover coating, comprising preparing a PRTV nano lotus leaf anti-pollution flashover coating as claimed in any one of claims 1 to 3, characterized in that: The specific steps include: Step 1: Add epoxy resin and polyurethane resin into the stirring device, then add butyl acetate and methyl isobutyl ketone at a speed of V 低 Stir until completely dissolved and keep at room temperature; Step 2: Add aluminum powder and diatomaceous earth to the stirring device in batches and stir at a speed of V 高 Stir until evenly dispersed and keep at room temperature; Step 3: Add fumed silica to the stirring device and add it at a speed of V 中 Stir until the paint is viscous and keep it at room temperature; Step 4: Add silane coupling agent, moisture curing agent, waterproofing agent and wetting agent into a stirring device and stir until uniformly dispersed, maintaining room temperature; Step 5: Keep V 高 Stir for a set period of time and keep the temperature at room temperature; Wherein, the stirring speed V 低 <V 中 <V 高 .

5. The method for preparing a PRTV nano lotus leaf anti-pollution flashover coating according to claim 4, characterized in that: The V 低 The range is 100~200rpm, V 中 The range is 300~500rpm, V 高 The range is 600~800rpm.

6. The method for preparing a PRTV nano lotus leaf anti-pollution flashover coating according to claim 4, characterized in that: In the step 4, the four auxiliary agents, namely, silane coupling agent, moisture curing agent, waterproofing agent and wetting agent, are added in sequence, and each auxiliary agent is added while maintaining V 低 Stir and keep V 中 Stir for a given time until the additive is evenly dispersed.

7. The method for preparing a PRTV nano lotus leaf anti-pollution flashover coating according to claim 4, characterized in that: The stirring device comprises a stirring kettle (1) for placing various components of the coating, a stirrer (2) detachably connected to the stirring kettle (1), a screw metering pump (41) for quantitatively conveying various liquid components in the coating to the stirring kettle (1) in a one-to-one correspondence, and five quantitative feeders (4) for quantitatively conveying various solid components in the coating to the stirring kettle (1) in a one-to-one correspondence. The stirrer (2), the quantitative feeders (4) and the screw metering pumps (41) are electrically connected to a controller (3).

8. The method for preparing a PRTV nano lotus leaf anti-pollution flashover coating according to claim 7, characterized in that: The stirring kettle (1) comprises an inner cylinder (42) for placing various components of the coating, and an outer cylinder (43) which is sleeved and detachably connected to the inner cylinder (42); a heat exchange pipe (44) capable of passing a constant temperature medium is detachably connected between the outer cylinder (43) and the inner cylinder (42); the heat exchange pipe (44) is connected to a high and low temperature integrated machine (49); and a heat conductive rubber (45) is provided between the heat exchange pipe (44) and the inner cylinder (42).

9. The method for preparing a PRTV nano lotus leaf anti-pollution flashover coating according to claim 8, characterized in that: The heat exchange tube (44) is annular and is provided in plurality. The heat conductive rubber (45) comprises a plurality of annular tube-attaching parts (46) and tube-attaching parts (47) formed on the outer surface of the tube-attaching parts (46) and located between two adjacent heat exchange tubes (44). The tube-attaching parts (47) are attached to the inner wall of the outer tube (43) and the heat exchange tube (44). The outer diameter of the inner tube (42) is greater than the inner diameter of the tube-attaching parts (46).

10. The method for preparing a PRTV nano lotus leaf anti-pollution flashover coating according to claim 8, characterized in that: The inner cylinder (42) is detachably connected to a temperature sensor (48) for detecting the temperature of the paint in the inner cylinder (42); the temperature sensor (48) and the high and low temperature integrated machine (49) are electrically connected to the controller (3); When the temperature sensor (48) detects a temperature value T 测 Greater or less than the preset normal temperature T 常 When T 差 =T 测 -T 常 , then the temperature T of the medium sent into the heat exchange tube (44) by the high and low temperature integrated machine (49) is 介 = T 常 -T 差 .

Images