A device for testing the copper ion leaching rate of an antifouling paint

Abstract

The utility model discloses an anti -fouling paint copper ion exuding rate testing arrangement, including constant temperature water tank, set up in the storage tank and test container of constant temperature water tank, first slide rail subassembly, be located constant temperature water tank top, along first direction extension setting, second slide rail subassembly, through the connecting plate sliding connection in first slide rail subassembly, second slide rail subassembly along second direction extension setting, can along first slide rail subassembly along first direction remove, test drum, through the fixed frame connection in second slide rail subassembly, can along second slide rail subassembly along second direction remove, and test drum can rotate around second direction relative to fixed frame, filter circulating pump, through the connection pipe with storage tank inside intercommunication, to purify the artificial seawater in storage tank, the surface of test drum is coated with the anti -fouling paint of waiting and testing, and the storage tank is used for soaking test drum, and the test container is used for accommodating test drum and supplies test drum to rotate in its inside, to get the exudation liquid sample.

Description

Technical Field

[0001] This utility model relates to the technical field of testing the copper ion penetration rate of antifouling paint. More specifically, it relates to a device for testing the copper ion penetration rate of antifouling paint. Background Technology

[0002] The main function of antifouling paint is to prevent marine organisms from attaching to the bottom of ships and underwater facilities. Copper ions are a common toxic component in antifouling paint. When they leach into seawater, they can effectively inhibit the attachment and growth of marine organisms. By testing the copper ion leachation rate, we can intuitively understand the ability of antifouling paint to release toxic substances in actual use environments, thereby assessing whether its antifouling effect meets expectations. If the copper ion leachation rate is too low, the antifouling paint may not be able to effectively prevent marine organisms from attaching. Conversely, if the leachation rate is too high, it may cause excessive pollution to the marine environment and also affect the service life of the antifouling paint.

[0003] The existing method for measuring copper ion leaching concentration is atomic absorption spectrometry. However, this testing device has high requirements for sample pretreatment, is susceptible to many interference factors, and is relatively cumbersome to operate, making it inconvenient for users and greatly affecting the testing of copper ion leaching rate of antifouling paint. Utility Model Content

[0004] In view of the above problems, one object of this utility model is to provide a device for testing the copper ion leaching rate of antifouling paint.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for testing the copper ion leaching rate of antifouling paint includes:

[0007] thermostatic water tank;

[0008] The storage tank and test container are set in a constant temperature water bath, and both the storage tank and the test container are filled with artificial seawater.

[0009] The first slide rail assembly is located above the constant temperature water bath and extends along the first direction;

[0010] The second slide rail assembly is slidably connected to the first slide rail assembly via a connecting plate. The second slide rail assembly extends along a second direction and is capable of moving along the first slide rail assembly along a first direction.

[0011] The test drum, connected to the second slide rail assembly via a fixed bracket, is capable of moving along the second slide rail assembly in a second direction, and the test drum is capable of rotating relative to the fixed bracket about the second direction; and

[0012] A filter circulation pump is connected to the inside of the storage tank via a connecting pipe to purify the artificial seawater in the storage tank.

[0013] The surface of the test drum is coated with a stain-resistant paint to be tested. The storage tank is used to immerse the test drum. The test container is used to hold the test drum and allow the test drum to rotate inside it to obtain an exudate sample.

[0014] Alternatively, the fixing frame can be an L-shaped structure, comprising vertical plates and a base plate arranged perpendicularly to each other;

[0015] The upright plate is connected to the second slide rail assembly;

[0016] The base plate is equipped with a rotating assembly, and the test drum is mounted on the base plate via the rotating assembly and can rotate relative to the base plate in a second direction under the drive of the rotating assembly.

[0017] The rotating assembly includes a motor fixed to the upper surface of the base plate and a stirring shaft fixed to the output shaft of the motor. The output shaft of the motor passes through the base plate and is fixed to the stirring shaft located below the base plate. The end of the stirring shaft away from the output shaft is fixed to the test drum.

[0018] Alternatively, the testing device may include four test cylinders, each of which is rotatably mounted on the base plate via a set of rotating components.

[0019] Alternatively, the number of test containers is the same as the number of test drums, with each test container capable of holding only one test drum.

[0020] Alternatively, the first slide rail assembly includes a first slide rail extending along a first direction and a first slider, wherein the first slider has a first slide groove that corresponds to and cooperates with the first slide rail, and the first slider is slidably connected to the first slide rail through the first slide groove.

[0021] The first slider is fixed to the connecting plate on the side surface away from the first slide rail. The second slide rail assembly is installed on the connecting plate on the side surface away from the first slider. The connecting plate can drive the second slide rail assembly to reciprocate along the first slide rail in the first direction with the first slider, so as to move the test drum between the storage tank and the test container.

[0022] Alternatively, the first slider may be fixed with a first locking block on each of its two opposite sides in the first direction.

[0023] Alternatively, the second slide rail assembly includes a second slide rail extending along a second direction and a second slider, wherein the second slider has a second slide groove that corresponds to and cooperates with the second slide rail, and the second slider is slidably connected to the second slide rail through the second slide groove;

[0024] The second slider is fixed to the vertical plate on the side surface away from the second slide rail. The fixing frame can drive the test drum to reciprocate along the second slide rail in the second direction with the second slider, so that the test drum can enter and exit the storage tank or test container.

[0025] Alternatively, the second slider may be fixed with a second locking block on each of its two opposite sides in the second direction.

[0026] Alternatively, the testing device may also include an experimental table, with the constant temperature water bath and the filter circulation pump both located on the tabletop.

[0027] The experimental table includes a partition vertically mounted on the tabletop, and a first slide rail assembly is fixed to the partition.

[0028] Alternatively, the water temperature in the constant temperature water bath can be 21-25℃.

[0029] The beneficial effects of this utility model are as follows:

[0030] To address the technical problems existing in the prior art, this utility model provides a copper ion leaching rate testing device for antifouling paint. Through the linkage of the first and second slide rail components, the test drum can be automatically transferred between the storage tank and the test container without manual lifting or placing, avoiding skin contact with artificial seawater and leaching liquid, and improving operational safety. The integrated design of slide rails, fixing frame, and rotating components integrates the entire process of soaking, transferring and sampling, eliminating the step of manually handling the solution, reducing operational complexity, and allowing non-professionals to quickly get started.

[0031] By driving the test drum to rotate with a motor, the rotation speed (error ≤ ±5r / min) and duration are precisely controlled to ensure consistent test conditions each time, reduce fluctuations in exudation rate caused by manual operation, and improve data comparability.

[0032] The filter material of the filter circulation pump has been upgraded to chelated ion exchange resin TULSION CH-90 (or CN-90), which has an adsorption efficiency of over 90% for copper ions (far higher than the ≤40% of activated carbon) and does not affect other components of seawater, avoiding the accumulation of copper ions that interfere with testing. The resin can be regenerated and reused 50-100 times. The circulation pump is made of corrosion-resistant plastic material (lifespan of 24-36 months, which is 2-3 times that of traditional metal pumps), which greatly reduces consumable and maintenance costs and reduces environmental pressure.

[0033] The device employs four sets of test rotating cylinders and corresponding test containers working synchronously, obtaining four sets of independent data in a single experiment, thus improving efficiency by 4 times. The data can be compared with each other, facilitating rapid anomaly detection. The device is integrated into the experimental table, with a compact and easily movable structure, suitable for laboratory research and development as well as batch testing in factories, balancing scientific research precision with industrial practicality. Attached Figure Description

[0034] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0035] Figure 1 This diagram illustrates the structure of the testing device provided in an embodiment of the present invention.

[0036] Figure 2 This diagram shows the test drum installed on the fixed frame according to an embodiment of the present invention.

[0037] Figure 3 This diagram illustrates the connection between the first slide rail assembly and the second slide rail assembly provided in an embodiment of the present invention.

[0038] Figure 4 Show Figure 2 Enlarged view of point A in the middle. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In this invention, unless otherwise expressly specified and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features not being in direct contact but through another feature between them.

[0042] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] To address the shortcomings of existing technologies, this utility model provides a device for testing the copper ion leaching rate of antifouling paint, combined with... Figure 1-4 As shown, the testing device includes a constant temperature water bath 1, a storage tank 2, a test container 3, a first slide rail assembly 4, a second slide rail assembly 5, a connecting plate 6, a test rotating cylinder 7, a fixing frame 8, and a filter circulation pump 9.

[0044] Storage tank 2 and test container 3 are placed in constant temperature water tank 1. Both storage tank 2 and test container 3 contain artificial seawater. Constant temperature water tank 1 is used to maintain a constant temperature environment for storage tank 2 and test container 3.

[0045] The first slide rail assembly 4 is located above the constant temperature water bath 1 and extends along the first direction.

[0046] The second slide rail assembly 5 is slidably connected to the first slide rail assembly 4 via the connecting plate 6. The second slide rail assembly 5 extends along the second direction and can move along the first slide rail assembly 4 along the first direction.

[0047] The test drum 7 is connected to the second slide rail assembly 5 via the fixed frame 8, and can move along the second slide rail assembly 5 in the second direction, and the test drum 7 can rotate relative to the fixed frame 8 around the second direction.

[0048] The filter circulation pump 9 is connected to the inside of the storage tank 2 via the connecting pipe 90, and is used to purify the artificial seawater in the storage tank 2.

[0049] The surface of the test drum 7 is coated with anti-fouling paint to be tested. The storage tank 2 is used to immerse the test drum 7. The test container 3 is used to hold the test drum 7 and allow the test drum 7 to rotate inside it to obtain an exudate sample.

[0050] It is understood that the first direction described in this embodiment is... Figure 1 The X-axis direction, the second direction is... Figure 1 The Z-axis direction in the equation.

[0051] This embodiment integrates core components such as a constant-temperature water bath, a sliding rail assembly, and a filter circulation pump to form an integrated testing system. This avoids the cumbersome operation caused by the dispersed equipment in traditional testing. Furthermore, the clear division of labor among components provides a stable and standardized experimental environment for copper ion leaching rate testing, reducing testing errors caused by poor equipment compatibility. Placing the storage tank 2 and the test container 3 within the same constant-temperature water bath 1 ensures that their temperatures remain consistent, preventing changes in the physical properties of artificial seawater (such as density and solubility) due to temperature differences. This guarantees the stability of the copper ion leaching process and improves the reliability of the test data. Simultaneously, the constant-temperature environment simulates actual ocean water temperature conditions, making the test results more consistent with real-world application scenarios.

[0052] In a specific embodiment, such as Figure 2As shown, the fixing frame 8 has an L-shaped structure, including a vertical plate 81 and a base plate 82 arranged perpendicularly to each other. The vertical plate 81 is connected to the second slide rail assembly 5.

[0053] In this embodiment, the base plate 82 is equipped with a rotating assembly. The test drum 7 is mounted on the base plate 82 via the rotating assembly, and the test drum 7 can rotate relative to the base plate 82 in a second direction under the drive of the rotating assembly. The test assembly includes a motor 83 fixed to the upper surface of the base plate 82, and a stirring shaft 84 fixed to the output shaft of the motor 83. The output shaft of the motor 83 rotates in the second direction, passes through the base plate 82, and is fixed to the stirring shaft 84 located below the base plate 82. The end of the stirring shaft 84 away from the output shaft is fixed to the test drum 7 to connect the test drum 7 and the output shaft of the motor 83, so that the test drum 7 can rotate in the second direction under the drive of the motor 83.

[0054] In this embodiment, the test drum 7 is driven to rotate by a rotating assembly consisting of a motor 83 and a stirring shaft 84. Compared with manual rotation, the rotation speed and rotation duration can be precisely controlled to ensure that the dynamic conditions of each test are consistent, avoid fluctuations in rotation parameters caused by human operation, and improve the repeatability and data comparability of the test. At the same time, the motor drive has strong stability and can run continuously for a long time to meet the needs of long-term immersion tests, reduce the frequency of manual intervention, and improve test efficiency.

[0055] In a specific embodiment, such as Figure 2 As shown, the testing device includes four test cylinders 7, which are rotatably mounted on the base plate 82 via a set of rotating components.

[0056] In one specific embodiment, the number of test containers 3 is the same as the number of test rotating cylinders 7. Each test container 3 can only hold one test rotating cylinder 7, so that the exudate samples obtained from each test container 3 do not interfere with each other. Four sets of test data can be obtained in one test, saving test time and making each test result a comparative example.

[0057] The setup of four test drums allows for simultaneous parallel testing of multiple sets of data. Compared to a single-drum setup, this enables the acquisition of more test data within the same timeframe, significantly improving testing efficiency. Furthermore, multiple drums can utilize identical testing conditions (such as the same constant-temperature water bath and the same batch of artificial seawater), reducing errors caused by differences in testing environments. This enhances the comparability of data sets, facilitating rapid verification of the stability of the copper ion leaching rate of the antifouling paint and providing a more comprehensive basis for product quality assessment. The test container 3 corresponds one-to-one with the test drum 7, avoiding the mixing of exudates and sample contamination issues that can occur when multiple test drums share a single test container. This ensures the independence and purity of each exudate sample. Moreover, a single test can acquire four sets of data, saving the time and cost of multiple individual tests. Inter-group comparisons can quickly identify abnormal data (such as a significant deviation between one set of data and the other three sets), facilitating timely troubleshooting and improving the accuracy and reliability of test results. Simultaneously, it provides a larger sample size for statistical analysis, making the final conclusions more convincing.

[0058] It should be noted that the number of test drums 7 is not limited to four. This embodiment of the present invention is only for illustrative purposes. In actual use, the number of test drums 7 can be increased or decreased as appropriate, but generally at least three, to facilitate the comparison of data between groups.

[0059] In a specific embodiment, such as Figure 1 as well as Figure 3 As shown, the first slide rail assembly 4 includes a first slide rail 41 extending along a first direction and a first slider 42. The first slider 42 has a first groove 43 that corresponds to and cooperates with the first slide rail 41. The first slider 42 is slidably connected to the first slide rail 41 through the first groove 43.

[0060] In this embodiment, the side surface of the first slider 42 away from the first slide rail 41 is fixedly connected to the connecting plate 6, and the second slide rail assembly 5 is installed on the side surface of the connecting plate 6 away from the first slider 42. The connecting plate 6 can drive the second slide rail assembly 5 to reciprocate along the first slide rail 41 with the first slider 42 in the first direction, so as to move the test drum 7 between the storage tank 2 and the test container 3.

[0061] In this embodiment, the first slide rail 41 and the first slider 42 slide together via a groove. Compared to other connection methods (such as roller type), the groove and the slide rail have a larger contact area, resulting in stronger stability during sliding. This prevents the slider from getting stuck or deviating during movement, ensuring that the test drum 7 can move smoothly and accurately along the first direction. Simultaneously, the groove structure has good sealing properties, reducing the entry of dust, seawater droplets, and other impurities into the sliding parts, reducing component wear, extending the service life of the slide rail assembly, and reducing equipment maintenance costs. The first slider 42 and the second slide rail assembly 5 are fixed together by the connecting plate 6, forming a continuous moving transmission structure. This allows the second slide rail assembly 5 to move synchronously with the first slider 42 along the first direction, ensuring that the test drum 7 moves accurately and stably when switching between the storage tank 2 and the test container 3, avoiding movement deviations caused by loose component connections. Furthermore, the reciprocating movement function makes the testing process more continuous (e.g., after soaking, it can quickly move to the test container; after sampling, it can return to the storage tank to continue soaking), improving operational convenience and reducing test interruption time.

[0062] In one specific embodiment, the first slider 42 is fixedly connected to two opposite sides in the first direction with first locking blocks 44. The first locking blocks 44 can engage with the first slide rail 41 to prevent the first slider 42 from dislodging from the first slide rail 41. The first locking blocks 44 can also limit the first slider 42 to prevent the connecting plate 6 from shifting.

[0063] In a specific embodiment, such as Figure 3-4 As shown, the second slide rail assembly 5 includes a second slide rail 51 extending along a second direction and a second slider 52. The second slider 52 has a second slide groove 53 that corresponds to and cooperates with the second slide rail 51. The second slider 52 is slidably connected to the second slide rail 51 through the second slide groove 53.

[0064] In this embodiment, the side surface of the second slider 52 away from the second slide rail 51 is fixed to the upright plate 81. The fixing frame 8 can drive the test drum 7 to reciprocate along the second slide rail 51 in the second direction with the second slider 52, so that the test drum 7 can enter and exit the storage tank 2 or the test container 3.

[0065] Similar to the first slide rail assembly 4, the grooved structure of the second slide rail 51 and the second slider 52 ensures that the test drum 7 moves smoothly and accurately in the second direction (vertical direction), preventing wobbling during up-and-down movement that could cause the test drum 7 to collide with the storage tank 2 or the test container 3. Simultaneously, the grooved structure has strong wear resistance, maintaining stable sliding performance over a long period and extending the overall service life of the device. The second slider 52 is fixed to the upright plate 81 of the fixing frame 8, allowing the test drum 7 to move flexibly in the vertical direction with the second slider 52. This facilitates adjusting the immersion depth of the test drum (e.g., complete immersion or partial exposure) according to the depth of the storage tank 2 and the test container 3, meeting the needs of different testing scenarios. Furthermore, the reciprocating motion function makes it easier for the test drum to enter and exit the container, avoiding the inconvenience of manual lifting and placing or component collisions, thus improving the safety and smoothness of the testing process.

[0066] In one specific embodiment, the second slider 52 is fixedly connected to two opposite sides in the second direction with second locking blocks 54. The second locking blocks 54 can engage with the second slide rail 51 to prevent the second slider 52 from dislodging from the second slide rail 51. The second locking blocks 54 can limit the movement of the second slider 52 to prevent the test drum 7 from tilting during movement and affecting the test results.

[0067] In one specific embodiment, the testing apparatus further includes an experimental table 10, with a constant temperature water bath 1 and a filter circulation pump 9 all located on the tabletop of the experimental table 10. The experimental table 10 includes a partition 101 vertically mounted on the tabletop, and a first slide rail assembly 4 is fixedly attached to the partition 101. The arrangement of the experimental table provides a unified installation platform for all components, making the overall layout of the apparatus more organized, saving laboratory space, and avoiding operational inconvenience caused by the scattered placement of components.

[0068] In this embodiment, the filter circulation pump 9 includes a circulation pump and a filter material built into the circulation pump. The circulation pump is preferably a seawater-resistant plastic pump, and the filter material is a resin material. Specifically, the filter material is preferably a chelating resin capable of removing +2 valent metal ions, and particularly preferably a selective chelating ion exchange resin, TULSION CN-90. This material has specific adsorption properties for copper ions and can be reused, with an adsorption efficiency far higher than activated carbon. The circulation pump is made of seawater-resistant plastic, which avoids equipment damage caused by seawater corrosion of the metal pump body, extends the service life of the circulation pump, and reduces maintenance costs. The filter material is selected from chelating resins (especially TULSION CN-90), which, compared with traditional activated carbon, has specific adsorption for copper ions and can accurately remove copper ions from the seawater in the storage tank, preventing the accumulation of copper ions in the seawater from affecting subsequent tests. At the same time, it does not adsorb other ions, ensuring the stability of the seawater composition. Moreover, the chelating resin can be reused, which significantly reduces consumable costs compared to disposable filter materials and improves the economy of the device.

[0069] In one embodiment, both the storage tank 2 and the test drum 7 are made of corrosion-resistant polycarbonate material. Polycarbonate material has excellent resistance to seawater corrosion, preventing corrosion and aging of the storage tank 2 and test drum 3 due to long-term contact with artificial seawater, ensuring structural stability and extending service life. Simultaneously, this material has strong chemical stability and will not react chemically with components in seawater or copper ions in antifouling paint, preventing seawater contamination due to material leaching or affecting the copper ion leaching rate, ensuring a pure testing environment and improving the accuracy of test data. Furthermore, the high transparency of polycarbonate material allows operators to easily observe the state of the seawater in the storage tank and the immersion status of the test drum, improving operational convenience.

[0070] In one embodiment, the water temperature in the constant temperature water bath 1 is (23±2)℃ to control the temperature of the storage tank 2 and the test container 3 to be maintained between 21-25℃ for a long period of time, avoiding the impact of temperature fluctuations on the test. Controlling the water temperature within the range of (23±2)℃ not only conforms to the actual water temperature conditions in most marine areas, but also avoids excessively high temperatures leading to excessively rapid copper ion leaching rates or excessively low temperatures leading to excessively slow leaching rates, ensuring the consistency of the test process with the actual application scenario; at the same time, a stable water temperature can avoid changes in seawater density and solubility due to temperature fluctuations, thereby affecting the diffusion and leaching of copper ions, ensuring the stability and repeatability of test data, and making the test results of different batches comparable.

[0071] The usage procedure of the testing device provided in this embodiment of the present invention is as follows: First, place both the storage tank 2 and the test container 3 in the constant temperature water tank 1 and control the water temperature to (23±2)℃. Add artificial seawater to the storage tank 2. Control the test rotating cylinder 7 to be immersed in the storage tank 2 through the first slide rail assembly 4 and the second slide rail assembly 5 (the test area must be completely submerged in the artificial seawater; for this embodiment, the test rotating cylinder 7 needs to be completely submerged in the artificial seawater). Connect the filter circulation pump 9 and the storage tank 2 through the connecting pipe 90.

[0072] Then, monitor the pH value of the artificial seawater in storage tank 2 every other day. The pH of normal seawater is 8.0. Since artificial seawater is exposed to air, carbon dioxide will enter the artificial seawater, causing the pH to drop and affecting the release of copper ions. It is necessary to ensure that the pH of the artificial seawater is within the range of 8.0±0.2.

[0073] Sampling days are set as days 1, 3, 7, 10, 14, 21, 24, 28, 31, 35, 38, 42, and 45. On these days, the artificial seawater in storage tank 2 needs to be sampled to test the copper ion concentration. If the copper ion concentration exceeds the limit (100 ug / L), the filter material of the filter circulation pump 9 needs to be replaced. If the copper ion content in the artificial seawater is too high, it will affect the release of copper ions from the antifouling paint, inhibit copper ion leaching, and interfere with the test results.

[0074] On each sampling day, the test cylinder 7 is removed from the storage tank 2 via the second guide rail assembly 5 and paused in the air for 10 seconds. Then, the test cylinder 7 is placed in fresh artificial seawater and rotated at low speed for 10 seconds, paused in the air for another 10 seconds, and then immediately placed into the test container and rotated at low speed for 1 hour. The test cylinder 7 is then placed back into the storage tank 2 via the first slide rail assembly 4 and the second slide rail assembly 5. A 50-100 ml sample of exudate is taken from each test container 3 using a measuring cylinder, and the copper ion concentration is tested using a spectrophotometer. Finally, the copper ion concentrations measured on each sampling day are integrated to obtain a copper ion exudation rate curve.

[0075] In this embodiment, a spectrophotometer is used to test the copper ion concentration. The preferred spectrophotometer is the American HACH DR3900 spectrophotometer, which requires no sample pretreatment, is simple and efficient to operate, and provides direct test results without calculation. It can also store 2000 sets of measurement values, which is convenient for summarizing the test results.

[0076] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A device for testing the copper ion leaching rate of antifouling paint, characterized in that, include: thermostatic water tank; The storage tank and test container are set in a constant temperature water bath, and both the storage tank and the test container are filled with artificial seawater. The first slide rail assembly is located above the constant temperature water bath and extends along the first direction; The second slide rail assembly is slidably connected to the first slide rail assembly via a connecting plate. The second slide rail assembly extends along a second direction and is capable of moving along the first slide rail assembly along a first direction. The test drum is connected to the second slide rail assembly via a fixed frame, and can move along the second slide rail assembly in a second direction, and the test drum can rotate relative to the fixed frame around the second direction; as well as A filter circulation pump is connected to the inside of the storage tank via a connecting pipe to purify the artificial seawater in the storage tank. The surface of the test drum is coated with a stain-resistant paint to be tested. The storage tank is used to immerse the test drum. The test container is used to hold the test drum and allow the test drum to rotate inside it to obtain an exudate sample.

2. The antifouling paint copper ion leaching rate testing device according to claim 1, characterized in that, The fixing frame has an L-shaped structure, including vertical plates and a base plate arranged perpendicularly to each other; The upright plate is connected to the second slide rail assembly; The base plate is equipped with a rotating assembly, and the test drum is mounted on the base plate via the rotating assembly and can rotate relative to the base plate in a second direction under the drive of the rotating assembly. The rotating assembly includes a motor fixed to the upper surface of the base plate and a stirring shaft fixed to the output shaft of the motor. The output shaft of the motor passes through the base plate and is fixed to the stirring shaft located below the base plate. The end of the stirring shaft away from the output shaft is fixed to the test drum.

3. The antifouling paint copper ion leaching rate testing device according to claim 2, characterized in that, The testing device includes four test cylinders, each of which is rotatably mounted on the base plate via a set of rotating components.

4. The antifouling paint copper ion leaching rate testing device according to claim 1, characterized in that, The number of test containers is the same as the number of test drums, and each test container can only hold one test drum.

5. The antifouling paint copper ion leaching rate testing device according to claim 1, characterized in that, The first slide rail assembly includes a first slide rail extending along a first direction and a first slider. The first slider has a first slide groove that corresponds to and cooperates with the first slide rail. The first slider is slidably connected to the first slide rail through the first slide groove. The first slider is fixed to the connecting plate on the side surface away from the first slide rail. The second slide rail assembly is installed on the connecting plate on the side surface away from the first slider. The connecting plate can drive the second slide rail assembly to reciprocate along the first slide rail in the first direction with the first slider, so as to move the test drum between the storage tank and the test container.

6. The antifouling paint copper ion leaching rate testing device according to claim 5, characterized in that, The first slider has a first locking block fixed to each of its two opposite sides in the first direction.

7. The antifouling paint copper ion leaching rate testing device according to claim 2, characterized in that, The second slide rail assembly includes a second slide rail extending along a second direction and a second slider. The second slider has a second slide groove that corresponds to and cooperates with the second slide rail. The second slider is slidably connected to the second slide rail through the second slide groove. The second slider is fixed to the vertical plate on the side surface away from the second slide rail. The fixing frame can drive the test drum to reciprocate along the second slide rail in the second direction with the second slider, so that the test drum can enter and exit the storage tank or test container.

8. The antifouling paint copper ion leaching rate testing device according to claim 7, characterized in that, The second slider has a second locking block fixed to each of its two opposite sides in the second direction.

9. The antifouling paint copper ion leaching rate testing device according to claim 1, characterized in that, The testing device also includes an experimental table, and the constant temperature water bath and the filter circulation pump are both located on the tabletop of the experimental table; The experimental table includes a partition vertically mounted on the tabletop, and a first slide rail assembly is fixed to the partition.

10. The antifouling paint copper ion leaching rate testing device according to claim 1, characterized in that, The water temperature in the constant temperature water bath is 21-25℃.

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