A transmission line fitting surface super-hydrophobic anti-icing treatment method

Abstract

The application relates to the technical field, in particular to a power transmission line hardware surface super-hydrophobic anti-icing treatment method, S1, collecting power transmission line hardware installation point environment working condition parameters, and operating to generate working condition adaptation indexes; S2, after executing pretreatment on the hardware surface, executing global scanning on the hardware surface, obtaining surface micro-topography parameters, dividing micro-units, operating to generate topography adaptation coefficients and target coating thickness values. According to the application, the hardware installation point site environment parameters are continuously collected, the parameters are operated and processed to quantitatively generate working condition adaptation indexes, the indexes are calculated by combining preset reference values and weighting coefficients, quantifiable bases are provided for the adaptation adjustment of coating formulas and coating processes, coating performance and actual site working conditions are accurately matched, the coating failure problem is solved, the adaptability and stability of the hardware surface functional layer are improved, the service life of the functional layer is prolonged, and the normal operation of the power transmission line hardware in a complex environment is ensured.

Description

Technical Field

[0001] This invention relates to the field of surface treatment technology, and in particular to a method for treating the surface of transmission line fittings with superhydrophobic anti-icing properties. Background Technology

[0002] The field of surface treatment technology includes related technologies for modifying material surfaces through physical and chemical methods. It mainly covers core contents such as degreasing and grease removal of metal surfaces, pickling and rust removal, sandblasting roughening, preparation of chemical conversion films, electrochemical deposition coating, sol-gel coating, and micro-nano structure construction. By controlling the surface morphology and chemical composition of materials, their surface wettability, adhesion, and environmental adaptability can be changed. It is widely used in the surface functionalization treatment of power transmission equipment, mechanical components, and outdoor metal parts.

[0003] The superhydrophobic anti-icing treatment method for transmission line fittings refers to a treatment method that constructs a functional layer on the surface of the fittings to address the issue of ice layer adhesion on the surface of transmission line fittings under low temperature and high humidity conditions. The technical aspects include pretreatment of the fitting substrate surface, construction of a rough structure, and introduction of low surface energy materials. Specifically, after degreasing, cleaning, and pickling the fittings, a micro-rough structure is formed by sandblasting or etching. Then, a structural layer containing silica particles is deposited on the surface using the sol-gel method. Furthermore, the surface is modified using fluorosilane compounds or silane coupling agents to form a functional layer with a specific structure and composition on the surface of the fittings.

[0004] Existing technologies only use fixed coating formulas and coating processes without adapting to the actual environmental conditions at the installation site. Their operation mode only focuses on the construction process of the surface functional layer, ignoring the impact of differences in on-site environmental parameters on coating performance. Under different environmental conditions, the functional layer formed by the fixed process cannot adapt to the on-site requirements and is prone to failure. For example, in complex environments with low temperature, high humidity, and lots of ice and snow, the coating is prone to peeling off and the anti-icing effect is poor, affecting the safety and durability of power transmission line fittings. Summary of the Invention

[0005] To address the technical problems existing in the prior art, embodiments of the present invention provide a method and system for superhydrophobic anti-icing treatment of the surface of transmission line fittings. The technical solution is as follows: A method for superhydrophobic anti-icing treatment of transmission line fittings includes the following steps: S1. Collect environmental operating condition parameters of the installation points of power transmission line hardware, and calculate and generate operating condition adaptation indicators. S2. After pre-processing the surface of the hardware, perform a full-area scan on the surface of the hardware to obtain the surface micro-morphology parameters, divide the micro-units to generate morphology adaptation coefficients and target coating thickness values, and generate the basic ratio values ​​of coating components based on the working condition adaptation index. S3. Prepare superhydrophobic coatings according to the basic component ratio values, and implement dynamic closed-loop control of component ratio during the preparation process; S4. Set the initial operating parameters of the coating nozzle based on the target coating thickness value, and dynamically adjust the nozzle operating parameters by collecting coating thickness data in real time during the coating process. S5. After the coating has cured, collect the coating performance parameters and compare them with the preset standard values. If the standard is not met, execute the negative feedback adjustment of compounding and recoating.

[0006] As a further aspect of the present invention, the steps for collecting environmental operating condition parameters and generating operating condition adaptation indicators include: continuously collecting environmental temperature, relative humidity, wind speed, and snow accumulation frequency parameters for 72 hours at 10-minute intervals; performing an arithmetic mean operation on the collected environmental temperature values ​​to generate an average environmental temperature value; performing an arithmetic mean operation on the collected relative humidity values ​​to generate an average relative humidity value; performing an arithmetic mean operation on the collected wind speed values ​​to generate an average wind speed value; calculating the total number of snow accumulations within the collection period to generate a snow accumulation frequency value; performing a difference operation between the average environmental temperature value, average relative humidity value, average wind speed value, and snow accumulation frequency value and a preset benchmark value to generate four parameter deviation values; and performing a weighted summation operation on the four parameter deviation values ​​to generate operating condition adaptation indicators.

[0007] As a further aspect of the present invention, the step of generating the basic component ratio values ​​includes: presetting a hydrophobic particle ratio range, a film-forming agent ratio range, and a dispersant ratio range; performing a summation operation on the deviation value corresponding to the average relative humidity and the deviation value corresponding to the frequency of snow and ice accumulation to generate a surface tension-related deviation value; adjusting the hydrophobic particle ratio value based on the surface tension-related deviation value; using the deviation value corresponding to the average ambient temperature as a viscosity-related deviation value; adjusting the film-forming agent ratio value based on the viscosity-related deviation value; using the deviation value corresponding to the average wind speed as a dispersibility-related deviation value; adjusting the dispersant ratio value based on the dispersibility-related deviation value; and performing normalization processing on the adjusted hydrophobic particle, film-forming agent, and dispersant ratio values ​​to generate the basic component ratio values.

[0008] As a further aspect of the present invention, the steps of surface pretreatment, full-area scanning, and generation of morphology adaptation coefficients for the hardware include: performing degreasing, rust removal, and grinding pretreatment on the surface of the hardware; using a laser profilometer to perform a full-area line-by-line scan on the surface of the hardware with a scanning step size of 0.1 mm; collecting roughness values, defect depth values, and defect area values ​​at the scanning points; dividing the scanning area into 1 mm × 1 mm micro-units; performing an arithmetic mean operation on all roughness values ​​within the micro-units to generate an average roughness value; taking the maximum value of all defect depth values ​​within the micro-units to generate a maximum defect depth value; calculating the ratio of the sum of defect areas within the micro-units to the total area of ​​the micro-units to generate a defect area ratio; performing ratio operations on the average roughness value, the maximum defect depth value, and the defect area ratio with a preset morphology reference value to generate three ratio coefficients; and performing a weighted summation operation on the three ratio coefficients to generate morphology adaptation coefficients.

[0009] As a further aspect of the present invention, the step of generating the target coating thickness value includes: presetting a coating thickness reference value range, performing a multiplication operation between the topography adaptation coefficient and the coating thickness reference value to generate an initial coating thickness value, performing an upward adjustment process on the initial coating thickness value when the topography adaptation coefficient exceeds 1.2, retaining the initial coating thickness value when the topography adaptation coefficient is in the range of 0.8 to 1.2, and performing a downward adjustment process on the initial coating thickness value when the topography adaptation coefficient is below 0.8, thereby generating the target coating thickness value.

[0010] As a further aspect of the present invention, in the dynamic closed-loop control of the component ratio, the control steps related to the coating viscosity include: adding hydrophobic particles, film-forming agent, and dispersant according to the basic component ratio values; starting the stirring device to perform mixing and dispersion operations; collecting coating viscosity values ​​at 1-second intervals; performing a comparison operation between the coating viscosity values ​​and a preset viscosity range to generate a viscosity deviation value; when the viscosity deviation value exceeds a preset deviation threshold, performing a reverse fine-tuning operation on the film-forming agent ratio; and collecting coating viscosity values ​​synchronously after each ratio adjustment until the coating viscosity value is within the preset viscosity range.

[0011] As a further aspect of the present invention, in the dynamic closed-loop control of the component ratio, the control steps related to the surface tension of the coating include: collecting the surface tension value of the coating at a time interval of 1 second, performing a comparison operation between the surface tension value of the coating and a preset surface tension range to generate a surface tension deviation value, performing a positive fine-tuning operation on the proportion of hydrophobic particles when the surface tension deviation value exceeds a preset deviation threshold, and collecting the surface tension value of the coating synchronously after each proportion adjustment is completed until the surface tension value of the coating is within the preset surface tension range.

[0012] As a further aspect of the present invention, in the dynamic closed-loop control of the component ratio, the control steps related to the surface temperature of the fittings include: collecting the surface temperature value of the fittings at 5-second intervals, performing a comparison calculation between the surface temperature value of the fittings and a preset temperature range to generate a temperature deviation value, performing a calibration adjustment operation on the dispersant ratio when the temperature deviation value exceeds a preset deviation threshold, and simultaneously collecting the coating dispersion uniformity value each time the ratio adjustment is completed, until the coating dispersion uniformity value is within a preset standard range.

[0013] As a further aspect of the present invention, the target coating thickness value and the micro-unit position coordinate information are transmitted to the motion control unit of the coating equipment. The motion control unit controls the servo nozzle to move line by line along the surface of the hardware. For a single micro-unit, the initial moving speed of the nozzle and the initial paint spraying amount are set according to the target coating thickness value. After a single coating pass is completed, the actual coating thickness value of the micro-unit is collected. The difference between the actual coating thickness value and the target coating thickness value is calculated to generate a thickness deviation value. When the absolute value of the thickness deviation value exceeds 3μm, the nozzle moving speed and paint spraying amount are adjusted. After each parameter adjustment is completed, a supplementary coating operation is performed, and the actual coating thickness value is collected synchronously until the absolute value of the thickness deviation value is less than or equal to 3μm.

[0014] As a further aspect of the present invention, the performance comparison and negative feedback adjustment steps after coating curing include: after the coating is fully cured, a secondary scanning detection is performed on the coating thickness across the entire surface of the hardware; 10 detection points are selected on the surface of the hardware; the static contact angle and freezing delay time parameters of the coating at each point are collected; static contact angle detection value and freezing delay time detection value are calculated and generated; the static contact angle detection value and freezing delay time detection value are compared with preset standard values; if any value does not reach the preset standard value, the component compounding adjustment and recoating operation are performed on the micro-unit where the corresponding point is located; the performance parameter collection and comparison operation is repeated until all detection point values ​​are within the preset standard value range.

[0015] In this invention, environmental parameters at the installation points of fittings are continuously collected, and these parameters are processed and quantified to generate working condition adaptation indicators. The indicators are calculated by combining preset benchmark values ​​and weighting coefficients, providing a quantifiable basis for the adaptation and adjustment of coating formulas and coating processes. This enables precise matching of coating performance with actual working conditions, solves the problem of easy coating failure, improves the adaptability and stability of the functional layer on the surface of fittings, extends the service life of the functional layer, and ensures the normal operation of power transmission line fittings in complex environments. This invention pre-treats the surface of the fittings, then divides it into micro-units through full-domain scanning, collects the surface parameters of the micro-units, and quantifies them to generate morphology adaptation coefficients. Combined with environmental parameter deviation values, the coating thickness and coating component ratio are adjusted to achieve refined quantification of surface morphology and dual adaptation of coating process and formula. This solves the problems of insufficient coating coverage or performance redundancy, improves the adaptability of coating to the surface of the fittings and on-site working conditions, enhances coating stability, extends service life, and ensures the normal operation of power transmission line fittings in complex environments. Attached Figure Description

[0016] Figure 1 This is a flowchart of the method of the present invention. Detailed Implementation

[0017] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0018] In embodiments of the present invention, words such as "exemplarily," "for example," etc., are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one.

[0019] In the embodiments of this invention, the terms "image" and "picture" may sometimes be used interchangeably. It should be noted that, without emphasizing the difference between them, their intended meanings are consistent. Similarly, the terms "of," "correlation (ponding)," and "correlation (ponding)" may sometimes be used interchangeably. It should be noted that, without emphasizing the difference between them, their intended meanings are consistent.

[0020] In this embodiment of the invention, sometimes a subscript such as W1 may be written in a non-subscript form such as W1. When the difference is not emphasized, the meaning they express is the same.

[0021] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0022] Example 1: This example primarily focuses on collecting environmental parameters and quantifying compatibility indicators for the installation points of transmission line hardware. This provides a core basis for subsequent adjustments to coating formulations and processes. Specifically, in the implementation process, the installation points are located at the installation sites of tension clamps on 110kV transmission lines in high-altitude, heavy icing areas of northern my country. Ambient temperature, relative humidity, wind speed, and snow accumulation frequency parameters were continuously collected for 72 hours at 10-minute intervals, accumulating 432 sets of valid data. The arithmetic mean of the collected ambient temperature values ​​was calculated to produce an average ambient temperature of -8℃, the arithmetic mean of the collected relative humidity values ​​was calculated to produce an average relative humidity of 85%, and the arithmetic mean of the collected wind speed values ​​was calculated to produce an average wind speed of 12 m / s. The total number of snow accumulations during the collection period was calculated to produce a snow accumulation frequency of 6. The preset baseline values ​​for ambient temperature were -5℃, relative humidity was 60%, wind speed was 8 m / s, and snow accumulation frequency was 2. The average temperature, average relative humidity, average wind speed, and snow accumulation frequency are each calculated by subtracting from a preset baseline value. The absolute value of the difference is used to generate four parameter deviation values: ambient temperature deviation (3), relative humidity deviation (25), wind speed deviation (4), and snow accumulation frequency deviation (4). The preset weighting coefficients for the four parameters are: ambient temperature deviation (0.3), relative humidity deviation (0.25), wind speed deviation (0.2), and snow accumulation frequency deviation (0.25). The deviation values ​​are weighted and summed, and the calculation process is 3×0.3+25×0.25+4×0.2+4×0.25=8.95. The final working condition adaptation index is 8.95. This embodiment addresses the problem that the existing technology uses fixed coating formulas and coating processes without adapting to the actual working conditions, which leads to easy coating failure. By continuously collecting on-site working condition parameters and quantifying them to generate working condition adaptation index, it provides a quantifiable core basis for subsequent full-process process adaptation, ensuring that the coating performance is accurately matched with the on-site working conditions.

[0023] Example 2, based on the working condition adaptation indicators and corresponding environmental parameters obtained in Example 1, further realizes the adaptation generation of hardware surface pretreatment, surface morphology quantitative characterization, target coating thickness value and coating component basic ratio value. Specifically, in the specific implementation process, for tension clamp hardware for transmission lines, the hardware surface is first degreased, derusted, and polished. Specifically, anhydrous ethanol is used to ultrasonically degrease the hardware surface for 15 minutes to remove surface oil and impurities. Then, 800-grit silicon carbide sandpaper is used to uniformly polish the hardware surface to remove the surface rust layer and oxide scale. After polishing, pressure is applied... Compressed air was used to blow away surface dust, ensuring the hardware surface was clean and free of foreign objects. A laser profilometer was then used to perform a full-area line-by-line scan of the hardware surface with a scan step size of 0.1 mm. The total scanned area of ​​the hardware surface was 1200 mm², which was divided into 1200 1 mm × 1 mm micro-units. Roughness, defect depth, and defect area values ​​were collected from 100 scan points within each micro-unit. An arithmetic mean was calculated for all roughness values ​​within the micro-unit to generate the average roughness value. The maximum defect depth value was calculated by taking the maximum value among all defect depth values ​​within the micro-unit. The sum of the defect areas within each micro-unit was then compared with the total area of ​​the micro-unit. The product ratio is used to generate the defect area percentage. Preset morphological reference values ​​are a roughness reference value Ra of 1.6 μm, a defect depth reference value of 5 μm, and a defect area percentage reference value of 2%. The average roughness, maximum defect depth, and defect area percentage of a single micro-unit are each compared to the preset morphological reference values ​​to generate three ratio coefficients. For a typical micro-unit, the average roughness is 2.4 μm, the maximum defect depth is 8 μm, and the defect area percentage is 3%, corresponding to ratio coefficients of 1.5, 1.6, and 1.5, respectively. The preset weighting coefficients for these three ratio coefficients are a roughness ratio coefficient of 0.4 and a defect depth coefficient of 2%. The ratio coefficient is 0.35, and the defect area ratio coefficient is 0.25. A weighted summation is performed on these three ratio coefficients: 1.5 × 0.4 + 1.6 × 0.35 + 1.5 × 0.25 = 1.535. This generates a morphology fitting coefficient of 1.535. The preset coating thickness baseline value is 50 μm, and the coating thickness baseline value range is 30 μm to 100 μm. Multiplying the morphology fitting coefficient by the coating thickness baseline value generates an initial coating thickness value of 76.75 μm. Since the morphology fitting coefficient of 1.535 exceeds 1.2, the initial coating thickness value is adjusted upwards by an amount exceeding 1.50% of part 2 is used to generate a final target coating thickness of 90 μm, which is within the preset coating thickness baseline range. The preset hydrophobic particle ratio range is 10% / 30%, the film-forming agent ratio range is 40% / 60%, and the dispersant ratio range is 5% / 15%, with the remainder being solvent. The deviation value of 25 corresponding to the average relative humidity in Example 1 and the deviation value of 4 corresponding to the ice and snow accumulation frequency are summed to generate a surface tension-related deviation value of 29. The hydrophobic particle ratio is adjusted based on this surface tension-related deviation value; for every 10 units increase in the surface tension-related deviation value, the hydrophobic particle ratio is increased by 3 percentage points within the preset range, corresponding to an increase from the baseline value of 15% to 24%. The deviation value of 3 corresponding to the average ambient temperature is used as the viscosity-related deviation value. The film-forming agent ratio is adjusted based on this viscosity-related deviation value; for every 1 unit increase in the viscosity-related deviation value, the film-forming agent ratio is increased by 2 percentage points within the preset range. The proportion of the film-forming agent was increased from the baseline value of 50% to 56%. The deviation value of 4 corresponding to the average wind speed was used as the dispersion correlation deviation value. Based on this deviation value, the dispersant proportion was adjusted. For every unit increase in the dispersion correlation deviation value, the dispersant proportion was increased by 0.5 percentage points within a preset range, corresponding to an increase from the baseline value of 8% to 10%. The adjusted proportions of hydrophobic particles, film-forming agent, and dispersant were normalized, and a 10% solvent was added. The final basic component ratio was 24% hydrophobic particles, 56% film-forming agent, 10% dispersant, and 10% solvent. This embodiment addresses the problems of existing technologies that do not consider differences in hardware surface morphology and use fixed coating thickness and formulation, leading to insufficient coating coverage or performance redundancy. It achieves refined quantification of surface morphology through micro-unit division and simultaneously combines operating parameters to achieve dual adaptation of coating thickness and coating formulation, providing precise process parameters for subsequent processes.

[0024] Example 3: Based on the basic component ratio values ​​generated in Example 2, this example further realizes the preparation of superhydrophobic coatings and the dynamic closed-loop control of component ratios during the preparation process. Specifically, in the specific implementation process, according to the basic component ratio values ​​generated in Example 2, hydrophobic particles, film-forming agent, dispersant, and solvent are sequentially added to the stirred reactor. The hydrophobic particles are modified silica particles with a particle size of 50 nm, the film-forming agent is fluorinated modified acrylic resin, the dispersant is sodium polycarboxylate, and the solvent is a mixture of anhydrous ethanol and deionized water. After the addition is completed, the stirring device is started to perform mixing and dispersion operations. The stirring speed is set to 1200 r / min, and the stirring temperature is controlled at 25℃. The coating viscosity value is collected at 1-second intervals, and the preset coating viscosity range is 800 mPa. s\1200mPa s, the preset viscosity deviation threshold is 200 mPa During the mixing and dispersion process, the initial viscosity value of the coating was 1450 mPa. The viscosity deviation value generated by comparing the viscosity with the preset viscosity range is 250 mPa. If the deviation exceeds the preset threshold, a reverse fine-tuning operation is performed on the film-forming agent ratio. Each fine-tuning increment is 1% of the total film-forming agent dosage, i.e., reducing the film-forming agent dosage by 1%. Simultaneously, a corresponding proportion of solvent is added. The coating viscosity is collected after each ratio adjustment. After three reverse fine-tuning operations, the collected coating viscosity is 1120 mPa. If the viscosity is within the preset range, stop adjusting the film-forming agent ratio. Simultaneously, collect the surface tension value of the coating at 1-second intervals. The preset surface tension range is 18 mN / m to 22 mN / m, and the preset surface tension deviation threshold is 3 mN / m. The initial surface tension value is 26 mN / m, which, compared with the preset range, results in a deviation of 4 mN / m, exceeding the preset deviation threshold. A positive fine-tuning operation is then performed on the hydrophobic particle ratio, with each adjustment increment being 0.5% of the total hydrophobic particle dosage (i.e., increasing the hydrophobic particle dosage by 0.5%). Surface tension values ​​are collected after each adjustment. After four positive fine-tuning operations, the surface tension value is 21 mN / m, within the preset range. Stop adjusting the hydrophobic particle ratio. Simultaneously, collect the surface temperature value of the hardware to be coated at 5-second intervals. The preset surface temperature range is 15℃ to 30℃. The preset temperature deviation threshold is 5℃. The initial surface temperature of the hardware is 8℃, which, compared with the preset temperature range, results in a temperature deviation of 7℃, exceeding the preset deviation threshold. Therefore, a calibration adjustment is performed on the dispersant ratio. The adjustment increment for each calibration is 0.8% of the total dispersant dosage, i.e., an increase of 0.8% in the dispersant dosage. The coating dispersion uniformity value is collected simultaneously after each ratio adjustment. The preset standard range for coating dispersion uniformity is 90%-100%. After two calibration adjustments, the collected coating dispersion uniformity value is 94%, within the preset standard range. The dispersant ratio adjustment is then stopped. This embodiment addresses the problem of large performance fluctuations and poor film formation caused by fixed feed ratios and lack of real-time parameter control in existing coating preparation technologies. By real-time acquisition of multiple parameters and dynamic closed-loop control of component ratios, it ensures that all performance parameters of the coating remain within the preset standard range, providing a stable superhydrophobic coating for subsequent coating processes.

[0025] Example 4: Based on the superhydrophobic coating with satisfactory performance prepared in Example 3 and the target coating thickness and micro-unit position coordinate information generated in Example 2, this example further achieves precise coating of the hardware surface and dynamic parameter control of the coating process. Specifically, during the implementation process, the target coating thickness and micro-unit position coordinate information of all micro-units generated in Example 2 are synchronously transmitted to the motion control unit of the coating equipment. The motion control unit controls the servo nozzle to move line by line along the hardware surface. The spraying pressure is set to 0.4 MPa and the spraying distance is set to 15 cm. For a single micro-unit, based on the target coating thickness value of 90 μm, the initial moving speed of the nozzle is set to 5 mm / s and the initial coating spray volume is set to 0.2 mL / s. After completing a single coating pass, a laser thickness gauge is used to collect the actual coating thickness value of the micro-unit in real time. The first collected actual coating thickness value is 78 μm. The difference between this and the target coating thickness value of 90 μm is calculated to generate a thickness deviation value of -12 μm. The absolute value of the thickness deviation value of 12 μm exceeds the target coating thickness value of 90 μm. The preset 3μm threshold is used to adjust the nozzle moving speed and paint spraying volume. The nozzle moving speed is reduced to 3mm / s and the paint spraying volume is increased to 0.28mL / s. After parameter adjustment, a supplementary coating operation is performed on the micro-unit, and the actual coating thickness value is collected simultaneously. The actual coating thickness value collected after supplementary coating is 88μm, the thickness deviation is -2μm, and the absolute value is less than or equal to 3μm, which meets the preset accuracy requirements. The coating operation of the micro-unit is stopped. For all 1200 micro-units on the surface of the hardware, the above process is followed to perform unit-by-unit coating and dynamic parameter control to ensure that the absolute value of the deviation between the actual coating thickness of each micro-unit and the target coating thickness is controlled within 3μm. This embodiment addresses the problem of uneven coating thickness and insufficient local protection caused by the use of fixed nozzle parameters for full-area coating in the prior art. By setting parameters at the micro-unit level and real-time closed-loop control, precise control of the coating thickness across the entire area is achieved. This not only ensures the protective performance of the coating but also avoids ineffective waste of paint, while improving the uniformity and adhesion of the coating.

[0026] Example 5: Building upon Example 4's completion of full-area coating application on the hardware surface, this example further implements performance testing after coating curing and negative feedback adjustment for substandard areas. Specifically, after full-area coating of the hardware surface is completed, the hardware is placed in a constant temperature and humidity curing chamber for room temperature curing. The curing environment temperature is controlled at 25°C, the relative humidity at 50%, and the curing time is 24 hours. After the coating is fully cured, a laser profilometer is used to perform a secondary scan to detect the coating thickness across the entire hardware surface, confirming that the thickness deviation meets the preset requirements. Subsequently, 10 detection points are selected on the hardware surface according to the principle of uniform distribution. Ten locations were tested, including planar areas, corner areas, and areas around bolt holes of the hardware, to measure the static contact angle parameters of the coating at each point. A high-low temperature alternating test chamber combined with an icing performance testing device was used to collect the icing delay time parameters at each point. The static contact angle values ​​from the ten points were arithmetically averaged to generate the static contact angle test value, and the icing delay time values ​​from the ten points were arithmetically averaged to generate the icing delay time test value. The preset standard value for the static contact angle was ≥150°, and the preset standard value for the icing delay time was ≥120 minutes. The initial static contact angle test value was 154°. The icing delay time, which met the preset standard value, was 108 minutes, failing to meet the preset standard value. A step-by-step check of the individual parameters at each of the 10 testing points revealed that the icing delay times at two corner areas were 82 minutes and 86 minutes respectively, both failing to meet the standard. For the micro-units located at these two points, component recombination adjustment and recoating were performed. Specifically, the proportion of hydrophobic particles in the recoating paint for these areas was increased by 5 percentage points to improve the superhydrophobic properties of the coating. The recoating thickness was controlled at 20 μm. After recoating, a second curing treatment was performed. After curing, performance parameter acquisition and comparison were repeated at these two points. The icing delay times at the two test points were 132 minutes and 128 minutes, respectively, and the static contact angles were 156° and 155°, respectively. The performance values ​​at all test points were within the preset standard range, completing the entire process of superhydrophobic anti-icing treatment for the surface of transmission line fittings. This embodiment addresses the problem of existing technologies that only perform appearance inspections after coating curing and lack a performance negative feedback adjustment mechanism, leading to local performance failures. By conducting full-area quantitative testing of core performance after curing and precise positioning of compound coating adjustment, it ensures that the anti-icing performance of the entire coating on the surface of the fittings meets the preset standards, comprehensively improving the anti-icing reliability and service life of transmission line fittings.

[0027] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for treating the surface of transmission line fittings with superhydrophobic anti-icing properties, characterized in that, S1. Collect environmental operating condition parameters of the installation points of power transmission line hardware, and calculate and generate operating condition adaptation indicators. S2. After pre-processing the surface of the hardware, perform a full-area scan on the surface of the hardware to obtain the surface micro-morphology parameters, divide the micro-units to generate morphology adaptation coefficients and target coating thickness values, and generate the basic ratio values ​​of coating components based on the working condition adaptation index. S3. Prepare superhydrophobic coatings according to the basic component ratio values, and implement dynamic closed-loop control of component ratio during the preparation process; S4. Set the initial operating parameters of the coating nozzle based on the target coating thickness value, and dynamically adjust the nozzle operating parameters by collecting coating thickness data in real time during the coating process. S5. After the coating has cured, collect the coating performance parameters and compare them with the preset standard values. If the standard is not met, execute the negative feedback adjustment of compounding and recoating.

2. The method for treating the surface of transmission line fittings with superhydrophobic anti-icing properties according to claim 1, characterized in that: The steps for collecting environmental operating condition parameters and generating operating condition adaptation indicators include: continuously collecting environmental temperature, relative humidity, wind speed, and snow accumulation frequency parameters for 72 hours at 10-minute intervals; performing an arithmetic mean operation on the collected environmental temperature values ​​to generate an average environmental temperature value; performing an arithmetic mean operation on the collected relative humidity values ​​to generate an average relative humidity value; performing an arithmetic mean operation on the collected wind speed values ​​to generate an average wind speed value; calculating the total number of snow accumulations within the collection period to generate a snow accumulation frequency value; performing a difference operation between the average environmental temperature value, average relative humidity value, average wind speed value, and snow accumulation frequency value and a preset benchmark value to generate four parameter deviation values; and performing a weighted summation operation on the four parameter deviation values ​​to generate operating condition adaptation indicators.

3. The method for treating the surface of transmission line fittings with superhydrophobic anti-icing properties according to claim 1, characterized in that: The steps for generating the basic component ratio values ​​include: presetting a ratio range for hydrophobic particles, a ratio range for film-forming agents, and a ratio range for dispersants; performing a summation operation on the deviation value corresponding to the average relative humidity and the deviation value corresponding to the frequency of snow and ice accumulation to generate a surface tension-related deviation value; adjusting the hydrophobic particle ratio value based on the surface tension-related deviation value; using the deviation value corresponding to the average ambient temperature as a viscosity-related deviation value; adjusting the film-forming agent ratio value based on the viscosity-related deviation value; using the deviation value corresponding to the average wind speed as a dispersibility-related deviation value; adjusting the dispersant ratio value based on the dispersibility-related deviation value; and performing normalization processing on the adjusted ratio values ​​of hydrophobic particles, film-forming agents, and dispersants to generate the basic component ratio values.

4. The method for treating the surface of transmission line fittings with superhydrophobic anti-icing properties according to claim 1, characterized in that: The steps of surface pretreatment, full-area scanning, and generation of morphology adaptation coefficients for the hardware include: performing degreasing, rust removal, and grinding pretreatment on the hardware surface; using a laser profilometer to perform a full-area line-by-line scan on the hardware surface with a scanning step size of 0.1 mm; collecting roughness values, defect depth values, and defect area values ​​at the scan points; dividing the scan area into 1 mm × 1 mm micro-units; performing an arithmetic mean operation on all roughness values ​​within the micro-units to generate the average roughness value; taking the maximum value of all defect depth values ​​within the micro-units to generate the maximum defect depth value; calculating the ratio of the sum of defect areas within the micro-units to the total area of ​​the micro-units to generate the defect area ratio; performing ratio operations on the average roughness value, the maximum defect depth value, and the defect area ratio with a preset morphology benchmark value to generate three ratio coefficients; and performing a weighted summation operation on the three ratio coefficients to generate the morphology adaptation coefficients.

5. The method for treating the surface of transmission line fittings with superhydrophobic anti-icing properties according to claim 1, characterized in that: The calculation and generation steps of the target coating thickness value include: preset a coating thickness reference value range, multiply the topography fitting coefficient with the coating thickness reference value to generate an initial coating thickness value, adjust the initial coating thickness value upward when the topography fitting coefficient exceeds 1.2, retain the initial coating thickness value when the topography fitting coefficient is in the range of 0.8 to 1.2, and adjust the initial coating thickness value downward when the topography fitting coefficient is below 0.8, thereby generating the target coating thickness value.

6. The method for treating the surface of transmission line fittings with superhydrophobic anti-icing properties according to claim 1, characterized in that: In the dynamic closed-loop control of component ratios, the control steps related to coating viscosity include: adding hydrophobic particles, film-forming agents, and dispersants according to the basic component ratio values; starting the stirring device to perform mixing and dispersion operations; collecting coating viscosity values ​​at 1-second intervals; comparing the coating viscosity values ​​with a preset viscosity range to generate a viscosity deviation value; when the viscosity deviation value exceeds a preset deviation threshold, performing a reverse fine-tuning operation on the film-forming agent ratio; collecting coating viscosity values ​​synchronously after each ratio adjustment is completed until the coating viscosity value is within the preset viscosity range.

7. The method for treating the surface of transmission line fittings with superhydrophobic anti-icing properties according to claim 1, characterized in that: In the dynamic closed-loop control of the component ratio, the control steps related to the surface tension of the coating include: collecting the surface tension value of the coating at a time interval of 1 second, performing a comparison calculation between the surface tension value of the coating and a preset surface tension range to generate a surface tension deviation value, and performing a positive fine-tuning operation on the proportion of hydrophobic particles when the surface tension deviation value exceeds the preset deviation threshold. The surface tension value of the coating is collected synchronously after each proportion adjustment is completed until the surface tension value of the coating is within the preset surface tension range.

8. The method for treating the surface of transmission line fittings with superhydrophobic anti-icing properties according to claim 1, characterized in that: In the dynamic closed-loop control of the component ratio, the control steps related to the surface temperature of the fittings include: collecting the surface temperature value of the fittings at 5-second intervals, comparing the surface temperature value of the fittings with the preset temperature range to generate a temperature deviation value, and performing a calibration adjustment operation on the dispersant ratio when the temperature deviation value exceeds the preset deviation threshold. The coating dispersion uniformity value is collected synchronously after each ratio adjustment is completed until the coating dispersion uniformity value is within the preset standard range.

9. The method for treating the surface of transmission line fittings with superhydrophobic anti-icing properties according to claim 1, characterized in that: The target coating thickness value and micro-unit position coordinate information are transmitted to the motion control unit of the coating equipment. The motion control unit controls the servo nozzle to move line by line along the surface of the hardware. For a single micro-unit, the initial moving speed of the nozzle and the initial paint spray volume are set according to the target coating thickness value. After a single coating pass is completed, the actual coating thickness value of the micro-unit is collected. The difference between the actual coating thickness value and the target coating thickness value is calculated to generate a thickness deviation value. When the absolute value of the thickness deviation value exceeds 3μm, the nozzle moving speed and paint spray volume are adjusted. After each parameter adjustment, a supplementary coating operation is performed, and the actual coating thickness value is collected synchronously until the absolute value of the thickness deviation value is less than or equal to 3μm.

10. The method for treating the surface of transmission line fittings with superhydrophobic anti-icing properties according to claim 1, characterized in that: The performance comparison and negative feedback adjustment steps after coating curing include: after the coating is fully cured, a second scan is performed on the coating thickness across the entire surface of the hardware. Ten detection points are selected on the surface of the hardware, and the static contact angle and freezing delay time parameters of the coating at each point are collected. Static contact angle detection values ​​and freezing delay time detection values ​​are calculated and generated. The static contact angle detection values ​​and freezing delay time detection values ​​are compared with preset standard values. If any value does not reach the preset standard value, the component compounding adjustment and recoating operation are performed on the micro-unit where the corresponding point is located. The performance parameter collection and comparison operation is repeated until all detection point values ​​are within the preset standard value range.

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