Coating performance detection method, system and storage medium

Abstract

The application provides a coating performance detection method, a system and a storage medium. The coating performance detection method comprises the following steps: acquiring appearance information of a coating surface of a sample having a self-repairing coating; wherein the coating surface of the sample is subjected to scratch treatment in advance, and the scratch treatment is used to form scratches on the coating surface of the sample; determining a first detection result according to the appearance information of the coating surface; acquiring scratch repair information, determining a second detection result according to the scratch repair information, and determining a comprehensive detection result according to the first detection result and the second detection result. In the embodiment of the application, the comprehensive detection result can reflect the damage resistance and the self-repairing performance of the self-repairing coating, so that the performance of the self-repairing coating can be comprehensively evaluated, and guidance is provided for the research and selection of the self-repairing coating.

Description

Technical Field

[0001] This application relates to the field of coating testing technology, and in particular to a coating performance testing method, system and storage medium. Background Technology

[0002] Self-healing materials are materials with self-healing capabilities. When applied to the surface of a substrate, they can form a coating structure with self-healing capabilities, i.e., a self-healing coating.

[0003] Self-healing coatings can repair themselves through their own mechanisms after being scratched or damaged, thus restoring the integrity of the surface.

[0004] In practical applications, the performance of self-healing coatings needs to be tested. However, performance testing of self-healing coatings usually only focuses on the repair process, resulting in an incomplete performance evaluation. Summary of the Invention

[0005] In view of this, this application aims to provide a coating performance testing method, system and storage medium, which at least solves the technical problems in the prior art.

[0006] According to a first aspect of this application, a method for testing coating performance is provided, comprising: Obtain the appearance information of the coating surface of a sample with a self-healing coating; wherein the coating surface of the sample has been pre-scratched, and the scratching treatment is used to form scratches on the coating surface of the sample. The first test result is determined based on the appearance information of the coated surface; Obtain scratch repair information, determine a second detection result based on the scratch repair information, and determine a comprehensive detection result based on the first detection result and the second detection result.

[0007] Optionally, the coating surface appearance information includes scratch depth and coating surface image; Determining the first detection result based on the appearance information of the coating surface includes: If the scratch depth is greater than the first preset depth, then the first detection result is determined at least based on the scratch depth; If the scratch depth is less than or equal to the first preset depth, the first detection result is determined based on the coating surface image.

[0008] Optionally, determining the first detection result at least based on the scratch depth includes: If the scratch depth is greater than the first preset depth and less than or equal to the second preset depth, or if the scratch is identified based on the coating surface image and the scratch has a whitish characteristic, then the first detection result is determined to be the second level. If the scratch depth is greater than the second preset depth and less than the third preset depth, then the first detection result is determined to be the third level. If the scratch depth is greater than or equal to the third preset depth, then the first detection result is determined to be the fourth level.

[0009] Optionally, determining the first detection result based on the coating surface image includes: If the scratch is identified based on any one of the multiple coating surface images and the scratch does not have a whitening feature, then the first detection result is determined to be of the first level. If the scratch is not identified based on multiple images of the coated surface, then the first detection result is determined to be level zero. The angle of inclination of the sample varies in different images of the coated surface.

[0010] Optionally, the first detection result is divided into multiple levels; The steps of acquiring scratch repair information, determining a second detection result based on the scratch repair information, and determining a comprehensive detection result based on the first detection result and the second detection result include: If the first detection result is not the lowest level, then scratch repair information is obtained, a second detection result is determined based on the scratch repair information, and a comprehensive detection result is determined based on the first detection result and the second detection result. After determining the first detection result based on the appearance information of the coating surface, the method further includes: If the first detection result is the lowest level, then the first detection result is output to the display screen.

[0011] Optionally, the scratch repair information includes a first scratch repair time or a second scratch repair time; The second detection result is determined based on the scratch repair information, including: The second test result is determined based on the first scratch repair time; or, the second test result is determined based on the second scratch repair time. Wherein, the first scratch repair time is the repair time of the scratch within a first temperature range, the second scratch repair time is the repair time of the scratch within a second temperature range, and the lower limit of the second temperature range is greater than the upper limit of the first temperature range.

[0012] Optionally, determining the second detection result based on the first scratch repair time includes: If the repair time of the first scratch is less than or equal to the first preset time, then the second test result is determined to be of the first excellent level; If the repair time for the first scratch is greater than the first preset time and less than or equal to the second preset time, then the second test result is determined to be of the first good grade. If the repair time of the first scratch is greater than the second preset time and less than or equal to the third preset time, then the second detection result is determined to be the first intermediate level. If the repair time of the first scratch is greater than the third preset time, then the second detection result is determined to be the first grade; The determination of the second detection result based on the second scratch repair time includes: If the second scratch repair time is less than or equal to the fourth preset time, then the second test result is determined to be the second excellent level; If the second scratch repair time is greater than the fourth preset time and less than or equal to the fifth preset time, then the second test result is determined to be the second good grade. If the second scratch repair time is greater than the fifth preset time and less than or equal to the sixth preset time, then the second detection result is determined to be the second intermediate level. If the second scratch repair time is greater than the sixth preset time, then the second detection result is determined to be the second poor level.

[0013] According to a second aspect of this application, a coating performance testing system is also provided, including a processor and a memory for storing processor-executable instructions, the processor being configured to execute the instructions to implement the coating performance testing method as described above.

[0014] Optionally, it also includes a coating performance testing device, which includes a placement table, a scraping component, and a lifting and pressure application assembly connected to the scraping component; The placement platform is used to place the sample. The placement platform and the scraper are movable relative to each other. The scraper is used to scratch the sample to form scratches on the coating surface of the sample. The lifting and pressing assembly is used to drive the scraper to rise and fall, and to apply pressure to the scraper after the scraper comes into contact with the sample.

[0015] According to a third aspect of this application, a readable storage medium is also provided, on which a computer program is stored, which, when executed by a processor, implements the coating performance testing method as described above.

[0016] In this embodiment, a first test result is determined based on the appearance information of the coating surface, a second test result is determined based on the scratch repair information, and a comprehensive test result is determined based on the first and second test results. The first test result reflects the damage resistance of the self-healing coating, the second test result reflects the self-healing performance of the self-healing coating, and the comprehensive test result reflects both the damage resistance and self-healing performance of the self-healing coating. This allows for a comprehensive evaluation of the performance of the self-healing coating and provides guidance for the research and selection of self-healing coatings.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a flowchart illustrating the steps of a coating performance testing method provided in an embodiment of this application; Figure 2 This is a flowchart of step S102 in a coating performance testing method provided in an embodiment of this application; Figure 3 This is a flowchart of another coating performance testing method provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the coating performance testing equipment in the coating performance testing system provided in this application embodiment.

[0019] Figure label: 10-Main body of equipment, 11-Base, 12-Pressure display screen, 13-Slide switch, 14-Adjustment switch, 15-Light source switch, 16-Detection table, 20-Placement table, 30-Scraping component, 40-Lifting and pressure application component, 50-Camera component, 60-Magnifying glass, 70-Guide rail. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this application to enable readers to better understand this application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in this application can be implemented. The division of the various embodiments below is for the convenience of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with and referenced by each other without contradiction.

[0021] Reference Figure 1 The diagram illustrates a flowchart of a coating performance testing method provided in an embodiment of this application. The coating performance testing method includes: S101, Obtain the appearance information of the coating surface of the sample with self-healing coating.

[0022] The sample also includes a substrate, and the self-healing coating can be applied to the upper surface of the substrate. The self-healing coating can be either an exogenous or endogenous type. The coating surface of the sample is pre-scraped to create scratches. During the scratching process, pressure is applied to a specific location on the sample to create scratches; the pressure applied during the scratching process can be 5N-40N.

[0023] After sample preparation and scratch treatment at room temperature, the appearance information of the coating surface is acquired within 1 minute at room temperature. This coating surface appearance information reflects the appearance of the self-healing coating on the scratched sample. It may include scratch depth, coating surface image, and scratch contour morphology. This information can be obtained through... Figure 4 The coating performance testing equipment shown performs scratch treatment on the sample. The sample can be a square plate structure. During the scratch treatment, the length of the scratch is less than the width of the sample, and the width of the scratch can be less than 1 mm. It should be noted that the scratches formed on different samples during the scratch treatment are different, and the scratches can be clearly visible or invisible to the naked eye.

[0024] Self-healing coatings can be subsequently applied to vehicles to provide an additional layer of protection, reduce maintenance needs, and improve vehicle durability. These coatings can be applied to various scratch-prone areas of the vehicle, such as the center console, door handle covers, rearview mirror housings, front bumper, and wheel arches. When a self-healing coating is subsequently applied to a vehicle component, that component includes both a substrate and the self-healing coating. The substrate can be made of plastic, metal, composite materials, etc.

[0025] Specimens need to be prepared in advance. To test the performance of the coating under real-world application conditions, the specimens are preferably prepared based on the vehicle parts where the self-healing coating will be applied. Specifically, the thickness of the substrate in the specimen is equal to the thickness of the base material in the vehicle parts, the material of the substrate in the specimen is the same as the material of the base material in the vehicle parts, the thickness of the self-healing coating in the specimen is equal to the thickness of the self-healing coating in the vehicle parts, and the material of the self-healing coating in the specimen is the same as the material of the self-healing coating in the vehicle parts. This ensures that the prepared specimens more closely resemble actual conditions, and the comprehensive test results based on these specimens are more consistent with reality. The pressure applied during scratch treatment can be determined based on the typical stress conditions of the vehicle parts where the self-healing coating will be applied.

[0026] The length and width dimensions of the sample shall not be less than 150mm × 100mm. As an example, the length and width dimensions of the sample are 200mm × 150mm, the thickness of the self-healing coating is 0.5mm, and the substrate material is PC (Polycarbonate) or PC+ABS (Acrylonitrile-Butadiene-Styrene copolymer).

[0027] S102, determine the first test result based on the appearance information of the coating surface.

[0028] The first test result can be divided into multiple levels, such as level zero, level one, level two, level three, level four, etc. The higher the level number, the worse the appearance performance of the coating surface after the sample is scratched. The first test result can also be in the form of score ranges, such as below 60 points, 60-70 points, 70-80 points, 80-90 points, etc.

[0029] S103, obtain scratch repair information, determine the second test result based on the scratch repair information, and determine the comprehensive test result based on the first test result and the second test result.

[0030] In this process, after the sample is scratched, the appearance information of the coating surface is acquired within 1 minute at room temperature. Then, the scratches on the sample are repaired at either room temperature or high temperature. Scratch repair information is determined based on the scratch repair process, including repair time and the degree of repair per unit time.

[0031] The second test results can be categorized into multiple levels, such as excellent, good, medium, and poor, with the self-healing performance of the coating decreasing sequentially from excellent to poor. The second test results can also be divided into multiple grades, such as first grade, second grade, third grade, and fourth grade; the higher the grade number, the better the self-healing performance of the coating. The second test results can also be presented as score ranges, such as below 60 points, 60-70 points, 70-80 points, and 80-90 points.

[0032] The comprehensive test result is determined based on the first and second test results. This can be achieved by combining the first and second test results. For example, the comprehensive test result can be in the format of first test result + second test result or second test result + first test result. When both the first and second test results are in the form of score segments, a weighted summation method can also be used to determine the comprehensive test result. After determining the comprehensive test result, it can be output to the display screen.

[0033] This coating performance testing method is mainly used in the performance verification stage of self-healing coatings to assess whether the self-healing coating meets the application requirements of the corresponding location and to provide feedback for parameter optimization of the self-healing coating. In the embodiments of this application, a first test result is determined based on the appearance information of the coating surface, a second test result is determined based on the scratch repair information, and a comprehensive test result is determined based on the first and second test results. The first test result reflects the damage resistance performance of the self-healing coating, the second test result reflects the self-healing performance of the self-healing coating, and the comprehensive test result reflects both the damage resistance performance and the self-healing performance of the self-healing coating, thereby enabling a comprehensive evaluation of the performance of the self-healing coating and providing guidance for the research and selection of self-healing coatings.

[0034] In some embodiments, the coating appearance information includes scratch depth and an image of the coating surface. (Refer to...) Figure 2 S102, determining the first detection result based on the appearance information of the coating surface includes: S1, if the scratch depth is greater than the first preset depth, then determining the first detection result based at least on the scratch depth; S2, if the scratch depth is less than or equal to the first preset depth, then determining the first detection result based on the coating surface image.

[0035] The scratch depth can be acquired by a ranging sensor, and the coating surface image can be acquired by the camera component 50 in the coating performance testing equipment. The camera component 50 can be a high-definition camera. The first preset depth is determined based on the accuracy of the ranging sensor, and the first preset depth must be greater than or equal to the minimum distance that the ranging sensor can measure. The first preset depth can be less than 0.05 mm. Determining the first detection result based at least on the scratch depth may include comparing the scratch depth with other preset depths to determine the first detection result. Determining the first detection result based on the coating surface image may include: using a recognition model to recognize the coating surface image to determine the first detection result. The recognition model can be a machine learning-based image recognition model. Determining the first detection result based on the coating surface image may also include comparing the coating surface image with a calibration image to determine the first detection result.

[0036] In this embodiment, when the scratch depth is large, the first detection result is determined at least based on the scratch depth, and the method for determining the first detection result is simple and fast; when the scratch depth is small, the first detection result is determined based on the coating surface image, and the accuracy of the determined first detection result is high, which can avoid the first detection result being affected by the small depth detection error.

[0037] In some embodiments, determining a first detection result based at least on the scratch depth includes: if the scratch depth is greater than a first preset depth and less than or equal to a second preset depth, or if a scratch is identified from a coating surface image and the scratch has a whitish characteristic, then the first detection result is determined to be a second level; if the scratch depth is greater than the second preset depth and less than a third preset depth, then the first detection result is determined to be a third level; if the scratch depth is greater than or equal to the third preset depth, then the first detection result is determined to be a fourth level.

[0038] The second preset depth can be half the thickness of the self-healing coating in the sample, and the third preset depth is equal to the thickness of the self-healing coating in the sample. If a scratch is identified based on the coating surface image and the scratch has a whitish characteristic, the first detection result is determined to be the second level. This includes: using a recognition model to recognize the coating surface image; if a scratch is identified and the scratch has a whitish characteristic, the first detection result is determined to be the second level. The second level can be represented by level 2, the third level by level 3, and the fourth level by level 4.

[0039] If the scratch depth is greater than the first preset depth and less than or equal to the second preset depth, or if the scratch is identified from the coating surface image and has a whitish characteristic, it indicates that after scratch treatment, a clearly visible scratch has formed on the sample, and the scratch shows obvious signs of whitishness. If the scratch depth is greater than the second preset depth and less than the third preset depth, it indicates that the scratch depth exceeds half the thickness of the self-healing coating, but does not penetrate the self-healing coating along its thickness direction. If the scratch depth is greater than or equal to the third preset depth, it indicates that the scratch penetrates the self-healing coating along its thickness direction, and is considered to have substandard basic coating performance, meaning the self-healing coating has failed.

[0040] In this embodiment, the first test result is divided into multiple levels, thereby achieving accurate grading of the damage resistance performance of the self-healing coating and providing a refined evaluation method for the damage resistance performance of the self-healing coating.

[0041] In some embodiments, determining a first detection result based on a coating surface image includes: if a scratch is identified in any one of the multiple coating surface images and the scratch does not have a whitening feature, then the first detection result is determined to be a first level; if no scratch is identified in any of the multiple coating surface images, then the first detection result is determined to be a zero level.

[0042] Multiple coating surface images are taken of the same sample. The angle of inclination of the sample differs in each coating surface image. The angle of inclination refers to the angle of inclination of the sample relative to the horizontal plane. For the same sample, there can be up to five coating surface images, with each image corresponding to an inclination angle of 0°, 15°, 30°, 45°, 60°, etc. The first level can be represented by level 1, and the zeroth level by level 0.

[0043] If a scratch is identified from multiple coating surface images and the scratch does not exhibit whitening characteristics, the first detection result is determined to be at level one. This includes: using a recognition model to identify multiple coating surface images; if a scratch is identified from any coating surface image and the scratch does not exhibit whitening characteristics, the first detection result is determined to be at level one. If no scratch is identified from multiple coating surface images, the first detection result is determined to be at level zero. This includes: using a recognition model to identify multiple coating surface images; if no scratch is identified from any of the images, the first detection result is determined to be at level zero.

[0044] If a scratch is identified in any of the multiple coating surface images and the scratch does not exhibit whitening characteristics, it indicates that a minor scratch was formed on the sample after the scratch treatment. The scratch needs to be viewed from multiple angles to be clearly seen. If no scratch is identified in any of the multiple coating surface images, it indicates that no obvious scratch was formed on the sample after the scratch treatment, meaning no scratches were formed that are visible to the naked eye. It should be noted that at level zero, although no obvious scratches are visible to the naked eye, faint scratches can be seen microscopically.

[0045] In this embodiment, the angle of sample tilt is different in different coating surface images. Determining the first detection result based on multiple different coating surface images can improve the accuracy of the determined first detection result.

[0046] In some embodiments, the first detection result is divided into multiple levels; refer to Figure 3 The diagram illustrates a flowchart of another coating performance testing method provided in this application embodiment, the coating performance testing method comprising: S201, Obtain the appearance information of the coating surface of the sample with self-healing coating; S202, determine the first test result based on the appearance information of the coating surface; S203, if the first test result is not the lowest level, then obtain scratch repair information, determine the second test result based on the scratch repair information, and determine the comprehensive test result based on the first test result and the second test result; S204, if the first detection result is the lowest level, then output the first detection result to the display screen.

[0047] The lowest grade indicates the worst damage resistance of the self-healing coating. When multiple grades are included (first, second, third, and fourth), the lowest grade is fourth. At grade four, the scratch depth is greater than or equal to a third preset depth, the scratch penetrates the self-healing coating along its thickness, the coating's basic performance is inadequate, and the self-healing coating has failed. Therefore, there is no need to observe the repair process of the self-healing coating, i.e., no need to evaluate its self-healing performance. In this embodiment, when the first detection result is the lowest grade, the repair process of the self-healing coating is no longer observed or its self-healing performance is evaluated, thus avoiding unnecessary waste of resources.

[0048] In some embodiments, scratch repair information includes a first scratch repair time or a second scratch repair time; The second test result is determined based on the scratch repair information, including: The second test result is determined based on the repair time of the first scratch; or, the second test result is determined based on the repair time of the second scratch. The first scratch repair time is the repair time of the scratch within a first temperature range, and the second scratch repair time is the repair time of the scratch within a second temperature range. The lower limit of the second temperature range is greater than the upper limit of the first temperature range. The first temperature range is a normal temperature environment, which can be 23℃±2℃, and the second temperature range is a high temperature environment, which can be 60℃±2℃.

[0049] After the sample is scratched, the appearance information of the coating surface is acquired within 1 minute at room temperature. Then, the scratches on the sample are repaired at a first temperature range, and the first scratch repair information is determined based on the scratch repair process. Alternatively, the scratches on the sample are repaired at a second temperature range, and the second scratch repair information is determined based on the scratch repair process.

[0050] The first repair time refers to the time from when the sample is scratched at room temperature until the scratch is completely repaired. The second repair time refers to the time from when the sample is scratched at room temperature and then placed in a high-temperature environment until the scratch is completely repaired. Complete scratch repair means that the self-healing coating at the scratched area has been repaired to be essentially the same as before the scratch. During the scratch repair process, the sample can be photographed by the camera component 50 to obtain a scratch repair video. If the scratch is not identified in the scratch repair video, the sample can be photographed by an electron microscope to obtain a microscopic video of the scratch repair. The complete repair of the scratch is determined based on the microscopic video of the scratch repair.

[0051] The self-healing coating can accelerate the repair process after being heated at high temperature. In this embodiment, the repair time of the scratch at high temperature or the repair time of the scratch at room temperature can be selected according to actual needs to determine the second test result. When the second test result is determined according to the repair time at high temperature, the test time can be shortened.

[0052] In some embodiments, determining the second test result based on the first scratch repair time includes: if the first scratch repair time is less than or equal to a first preset time, then determining the second test result as a first excellent grade; if the first scratch repair time is greater than the first preset time and less than or equal to the second preset time, then determining the second test result as a first good grade; if the first scratch repair time is greater than the second preset time and less than or equal to the third preset time, then determining the second test result as a first intermediate grade; if the first scratch repair time is greater than the third preset time, then determining the second test result as a first poor grade.

[0053] In some embodiments, determining the second test result based on the second scratch repair time includes: if the second scratch repair time is less than or equal to a fourth preset time, then the second test result is determined to be a second excellent grade; if the second scratch repair time is greater than the fourth preset time and less than or equal to a fifth preset time, then the second test result is determined to be a second good grade; if the second scratch repair time is greater than the fifth preset time and less than or equal to a sixth preset time, then the second test result is determined to be a second intermediate grade; if the second scratch repair time is greater than the sixth preset time, then the second test result is determined to be a second poor grade.

[0054] The first preset time can be 2 hours, the second preset time can be 12 hours, and the third preset time can be 24 hours. The first excellent grade can be represented by grade a, the first good grade by grade b, the first medium grade by grade c, and the first poor grade by grade d.

[0055] The fourth preset time can be 3 seconds, the fifth preset time can be 1 minute, and the sixth preset time can be 3 minutes. The second excellent level can be represented by grade A, the second good level by grade B, the second average level by grade C, and the second poor level by grade D.

[0056] The overall test result is in the format of the second test result plus the first test result. If the first test result is level 0 and the second test result is level a, the overall test result is level a0. Similarly, the overall test result is in the format of the second test result plus the first test result. If the first test result is level 2 and the second test result is level b, the overall test result is level b0.

[0057] In this embodiment, the second detection result is divided into multiple levels, thereby achieving precise grading of the self-healing performance of the self-healing coating and providing a refined evaluation method for the damage resistance performance of the self-healing coating.

[0058] When a self-healing coating is subsequently applied to a vehicle, after determining the overall test results, the adequacy of these results can be assessed based on the actual application location and user visibility. For example, for highly visible and easily damaged areas inside the vehicle, such as the center armrest, the overall test result should be no lower than B2 level, and after 100 repeated scratch repairs at the same location, the overall test result should not be lower than C3 level. For less visible and easily damaged areas outside the vehicle, the overall test result should be no lower than B3 level.

[0059] An application example of the above coating performance testing method is as follows: A self-healing coating was selected for use on components in the highly visible passenger compartment of the vehicle. A sample with dimensions of 200mm x 150mm and a coating thickness of 0.5mm was prepared using a PC+ABS substrate. Coating performance testing equipment was used to apply 10N of pressure to a specific location on the sample to create a scratch. Based on the scratch depth and coating surface image, the first test result was determined to be Level 1, and the first repair time was measured to be 8 hours. Based on the first repair time, the second test result was determined to be Level B, resulting in a comprehensive test result of Level B1. Subsequently, another location on the sample was repeatedly scratched and repaired 100 times at room temperature. Based on the scratch depth and coating surface image of the 100th scratch, the first test result was determined to be Level 2, and based on the first repair time of the 100th scratch, the second test result was determined to be Level B, resulting in a comprehensive test result of Level B2, meeting the requirements for high visibility within the passenger compartment.

[0060] This application also provides a coating performance testing system, which includes a processor and a memory. The memory stores instructions executable by the processor, and the processor executes the instructions stored in the memory to implement the coating performance testing method provided in the first aspect.

[0061] The coating performance testing system may also include a display screen electrically connected to the processor, which is used to receive and display the comprehensive test results or the first test results sent by the processor.

[0062] The aforementioned memory may include random access memory (RAM) or non-volatile memory, such as at least one disk storage device. The aforementioned processor may be a general-purpose processor, such as a central processing unit (CPU), a network processor (NP), or a digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic devices.

[0063] Reference Figure 4In some embodiments, the coating performance testing system further includes a coating performance testing device, which includes a placement platform 20, a scraper 30, and a lifting and pressure applying assembly 40 connected to the scraper 30. The placement platform 20 is used to place the sample, and the placement platform 20 and the scraper 30 are movable relative to each other. The scraper 30 is used to scratch the sample to form scratches on the coating surface of the sample. The lifting and pressure applying assembly 40 is used to move the scraper 30 up and down, and to apply pressure to the scraper 30 after it comes into contact with the sample. In this embodiment, the coating performance testing device can scratch the sample to form scratches on the coating surface of the sample, achieving standardization and repeatability of scratch formation.

[0064] The coating performance testing equipment also includes a main body 10, a placement stage 20, and a scraping component 30, which are movable relative to the length of the main body 10. The main body 10 includes a base 11, and the placement stage 20 is slidably connected to the base 11 along the length of the main body 10, so that the placement stage 20 is movable relative to the scraping component 30.

[0065] Specifically, the base 11 is provided with a guide rail 70, and a slider is slidably connected to the guide rail 70. The slider is connected to the placement stage 20. The slider can be driven to slide along the guide rail 70 by a driving component. The coating performance testing equipment may also include a slide switch 13, which is used to control the sliding of the slider, thereby controlling the sliding of the placement stage 20.

[0066] Initially, the placement platform 20 is located on one side of the scratching element 30. After the sample is placed on the placement platform 20 and fixed, the placement platform 20 is slid until the sample is below the scratching element 30. Then, the lifting and pressing assembly 40 operates, causing the scratching element 30 to descend. After the scratching element 30 contacts the sample, the lifting and pressing assembly 40 continues to cause the scratching element 30 to descend, applying pressure to the scratching element 30 and transmitting this pressure to the sample. Afterward, the placement platform 20 slides, forming a scratch.

[0067] After the scraper 30 contacts the sample, the pressure applied to the scraper 30 by the lifting and pressing assembly 40 can range from 5N to 40N. The coating performance testing equipment may also include a pressure sensor, a pressure display screen 12, and an adjustment switch 14. The pressure sensor monitors the magnitude of the pressure applied to the scraper 30 by the lifting and pressing assembly 40, and the pressure display screen 12 displays this pressure. The adjustment switch 14 controls the lifting and lowering of the scraper 30. After the lifting and pressing assembly 40 applies pressure to the scraper 30 and this pressure is transmitted to the sample, when the pressure displayed on the pressure display screen 12 is the required pressure, the lifting and pressing assembly 40 can be stopped by the adjustment switch 14, thereby controlling the magnitude of the pressure applied to the sample.

[0068] A fixed bracket is provided on the base 11, and the lifting and pressing assembly 40 is connected to the fixed bracket. The lifting and pressing assembly 40 may include a motor, a ball screw mechanism, etc. The scraping component 30 includes a main rod and a pressure head detachably connected to the bottom of the main rod. The pressure head is replaceable. The pressure head is circular in shape, and its diameter is less than 1 mm, for example, 0.75 mm. The coating performance testing equipment also includes a testing table 16. After the sample is scratched, it can be placed on the testing table 16 for subsequent testing. After the sample is scratched, it can also be directly placed on the placement table 20 for subsequent testing.

[0069] In some embodiments, the coating performance testing equipment further includes a ranging sensor and a camera component 50 electrically connected to the processor. The ranging sensor and the camera component 50 may be movable relative to the main body 10 or may be fixed in position. The ranging sensor may be disposed above the testing table 16, and the camera component 50 may be disposed above the testing table 16.

[0070] In some embodiments, the coating performance testing device further includes a timer electrically connected to the processor, the timer being used to keep track of the repair process of the self-healing coating.

[0071] In some embodiments, the coating performance testing equipment further includes a light source, a light source switch 15, a magnifying glass 60, etc. The light source switch 15 is electrically connected to the light source, and the light source can be a D65 standard light source. The light source switch 15 is used to control the light source to turn on and off.

[0072] In another embodiment provided in this application, a readable storage medium is also provided, on which a computer program is stored, and when the computer program is executed by a processor, it implements the coating performance detection method provided in the first aspect.

[0073] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any usable medium that a computer can read or a data storage device such as a server or data center that integrates one or more usable media. The usable medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state drive), etc.

[0074] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0075] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0076] The above are merely preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A method for testing coating performance, characterized in that, include: Obtain the appearance information of the coating surface of a sample with a self-healing coating; wherein the coating surface of the sample has been pre-scratched, the scratching treatment is used to form scratches on the coating surface of the sample, and the appearance information of the coating surface includes scratch depth and coating surface image. A first test result is determined based on the appearance information of the coating surface, wherein the first test result is divided into multiple levels; Obtain scratch repair information, determine a second detection result based on the scratch repair information, and determine a comprehensive detection result based on the first detection result and the second detection result; The scratch repair information includes a first scratch repair time or a second scratch repair time. The first scratch repair time is the repair time of the scratch within a first temperature range, and the second scratch repair time is the repair time of the scratch within a second temperature range. The lower limit of the second temperature range is greater than the upper limit of the first temperature range. The second detection result is divided into multiple levels. The method for determining whether the comprehensive test results of the self-healing coating meet the requirements is as follows: the comprehensive test results of the self-healing coating meet the requirements based on the actual application location and the visibility of the self-healing coating to the user.

2. The coating performance testing method according to claim 1, characterized in that, Determining the first detection result based on the appearance information of the coating surface includes: If the scratch depth is greater than the first preset depth, then the first detection result is determined at least based on the scratch depth; If the scratch depth is less than or equal to the first preset depth, the first detection result is determined based on the coating surface image.

3. The coating performance testing method according to claim 2, characterized in that, Determining the first detection result based at least on the scratch depth includes: If the scratch depth is greater than the first preset depth and less than or equal to the second preset depth, or if the scratch is identified based on the coating surface image and the scratch has a whitish characteristic, then the first detection result is determined to be the second level. If the scratch depth is greater than the second preset depth and less than the third preset depth, then the first detection result is determined to be the third level. If the scratch depth is greater than or equal to the third preset depth, then the first detection result is determined to be the fourth level.

4. The coating performance testing method according to claim 2, characterized in that, Determining the first detection result based on the coating surface image includes: If the scratch is identified based on any one of the multiple coating surface images and the scratch does not have a whitening feature, then the first detection result is determined to be of the first level. If the scratch is not identified based on multiple images of the coated surface, then the first detection result is determined to be level zero. The angle of inclination of the sample varies in different images of the coated surface.

5. The coating performance testing method according to any one of claims 1 to 4, characterized in that, The steps of acquiring scratch repair information, determining a second detection result based on the scratch repair information, and determining a comprehensive detection result based on the first detection result and the second detection result include: If the first detection result is not the lowest level, then scratch repair information is obtained, a second detection result is determined based on the scratch repair information, and a comprehensive detection result is determined based on the first detection result and the second detection result. After determining the first detection result based on the appearance information of the coating surface, the method further includes: If the first detection result is the lowest level, then the first detection result is output to the display screen.

6. The coating performance testing method according to any one of claims 1 to 4, characterized in that, The second detection result is determined based on the scratch repair information, including: The second test result is determined based on the first scratch repair time; or, the second test result is determined based on the second scratch repair time.

7. The coating performance testing method according to claim 6, characterized in that, The step of determining the second detection result based on the first scratch repair time includes: If the repair time of the first scratch is less than or equal to the first preset time, then the second test result is determined to be of the first excellent level; If the repair time for the first scratch is greater than the first preset time and less than or equal to the second preset time, then the second test result is determined to be of the first good grade. If the repair time of the first scratch is greater than the second preset time and less than or equal to the third preset time, then the second detection result is determined to be the first intermediate level. If the repair time of the first scratch is greater than the third preset time, then the second detection result is determined to be the first grade; The determination of the second detection result based on the second scratch repair time includes: If the second scratch repair time is less than or equal to the fourth preset time, then the second test result is determined to be the second excellent level; If the second scratch repair time is greater than the fourth preset time and less than or equal to the fifth preset time, then the second test result is determined to be the second good grade. If the second scratch repair time is greater than the fifth preset time and less than or equal to the sixth preset time, then the second detection result is determined to be the second intermediate level. If the second scratch repair time is greater than the sixth preset time, then the second detection result is determined to be the second poor level.

8. A coating performance testing system, characterized in that, The method includes a processor and a memory for storing processor-executable instructions, the processor being configured to execute the instructions to implement the coating performance testing method as described in any one of claims 1 to 7.

9. The coating performance testing system according to claim 8, characterized in that, It also includes a coating performance testing device, which includes a placement platform, a scraping component, and a lifting and pressure application assembly connected to the scraping component; The placement platform is used to place the sample. The placement platform and the scraper are movable relative to each other. The scraper is used to scratch the sample to form scratches on the coating surface of the sample. The lifting and pressing assembly is used to drive the scraper to rise and fall, and to apply pressure to the scraper after the scraper comes into contact with the sample.

10. A readable storage medium, characterized in that, The readable storage medium stores a computer program that, when executed by a processor, implements the coating performance testing method as described in any one of claims 1 to 7.

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