A device for detecting the performance of a PVDF water-based paint

Abstract

The utility model relates to the field of PVDF water -based paint, and disclose a kind of PVDF water -based paint performance detection device, including detection box and substrate, substrate is equipped in detection box, substrate is used to apply the paint to be detected, further including the base box of setting in the bottom surface of the detection box, T-shaped baffle is set in the detection box, T-shaped baffle is above the base box, rotating movement structure is set in the base box, three groups of coating substrate structure are set on the rotating movement structure, square hole is opened on the T-shaped baffle, square hole is opened in the three side edges of T-shaped baffle, fixed frame is set on the top surface of the detection box, three groups of baffle passage structure are set on the fixed frame, the linkage control of carousel rotation and baffle passage driven by motor realizes the automatic switching of sample, so that the performance data under different environments have stronger relevance, can more comprehensively reflect the aging law of paint in actual use.

Description

Technical Field

[0001] This utility model relates to the field of PVDF waterborne coatings, specifically a PVDF waterborne coating performance testing device. Background Technology

[0002] Currently, existing PVDF waterborne coating performance testing devices are mostly modular, resulting in long testing cycles and poor data correlation, making it difficult to meet the rapid needs of coating research and development. These devices also have technical limitations in simulating environments and evaluating performance, and cannot fully reflect the aging and performance changes of coatings in actual use, affecting the accuracy and efficiency of testing.

[0003] In terms of multi-parameter detection, the level of automation and intelligence is insufficient, manual operation is cumbersome and prone to errors, affecting detection efficiency and accuracy. At the same time, existing devices also have shortcomings in environmental simulation, weather resistance testing and environmental safety, such as a single ultraviolet light source, insufficient control of humid and hot environment, and pollution and waste problems in solvent management and resource utilization. To address these issues, we propose a PVDF waterborne coating performance testing device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a PVDF water-based coating performance testing device, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a PVDF water-based coating performance testing device, comprising a testing chamber and a substrate, wherein a door is installed on one side of the opening of the testing chamber, and a substrate is provided inside the testing chamber for applying the coating to be tested, and further comprising: A base box is disposed on the bottom surface inside the testing chamber, and the base box is snapped into the testing chamber; The T-shaped partition is installed inside the detection box. The three sides of the T-shaped partition are fixedly connected to the three sides inside the detection box. The T-shaped partition is above the base box and fits against the base box. A rotating and moving structure disposed within the base box; The three sets of coated substrate structures are disposed on the rotating and moving structure. The three sets of coated substrate structures are respectively located between the two adjacent sides of the T-shaped partition, and the substrate is connected to each of the three sets of coated substrate structures. The square holes are formed on the T-shaped partition, and square holes are formed through the three sides of the T-shaped partition. The square holes correspond to the structure of the coating substrate. A fixing frame is installed on the top surface of the testing box, and the legs of the fixing frame are fixedly connected to the top surface of the testing box; The three sets of partition channel structures are set on the fixed frame, and the three sets of partition channel structures correspond to the square holes.

[0006] Preferably, a circular hole is provided through the side of the base box away from the bottom surface of the detection box, and an annular groove extends from the cylindrical surface of the circular hole toward the base box.

[0007] Preferably, the rotating moving structure includes a motor and a turntable. The bottom surface of the motor body is fixedly connected to the bottom surface inside the base box. The output shaft of the motor faces the circular hole. A turntable is fixedly connected to the output shaft of the motor. The turntable is rotatably connected to the circular hole. A protrusion is fixedly connected to the cylindrical surface of the turntable. The protrusion engages with the annular groove of the circular hole.

[0008] Preferably, the coating substrate structure includes sleeves and mounting rods. Three sleeves are fixedly connected to the side of the turntable away from the motor, which are evenly distributed along the circumference of the turntable. The three sleeves are respectively between the two adjacent sides of the T-shaped partition. A mounting rod is fixedly connected to one side of the substrate. The mounting rods of the three substrates are respectively sleeved and connected to the three sleeves.

[0009] Preferably, annular protrusions are fixedly connected to the cylindrical surface of the mounting rod, with the annular protrusions located at the end of the mounting rod away from the substrate.

[0010] Preferably, the inner cylindrical surface of the sleeve is provided with a plurality of circular grooves evenly distributed along the circumference of the sleeve. A spring is fixedly connected to the opposite side of the opening of the circular groove, and a spherical protrusion is fixedly connected to the other end of the spring. The spherical protrusion is inserted into the circular groove, with one spherical end of the spherical protrusion outside the circular groove. The annular protrusion is located between the spherical protrusion and the turntable.

[0011] Preferably, the top surface of the testing box has three insertion holes, which correspond to the three sides of the T-shaped partition. The insertion holes extend to the side of the T-shaped partition that is in contact with the base box, and the insertion holes correspond to the square holes and extend through the square holes.

[0012] Preferably, the partition channel structure includes a partition, uprights, and a limiting ring. A partition is inserted into each of the insertion holes, and the partition passes through the square hole. Two uprights are fixedly connected to one side of each partition outside the insertion hole, and a limiting ring is fixedly connected to the other end of each upright.

[0013] Preferably, the partition channel structure further includes a threaded rod, one end of which is fixedly connected to a circular protrusion, and the other end of which is equipped with a handle. The top surface of the fixing frame has three threaded holes that correspond to the limiting ring. The end of the threaded rod connected to the circular protrusion passes through the threaded hole of the fixing frame and the limiting ring. The circular protrusion of the threaded rod is engaged between the uprights. The end of the threaded rod connected to the handle is on the side of the fixing frame away from the detection box.

[0014] Preferably, a temperature and humidity control module is fixedly connected to the top surface of the testing chamber, and the door of the testing chamber away from the temperature and humidity control module is located between the two adjacent sides of the T-shaped partition. A fluorescent ultraviolet lamp is fixedly connected to the top surface of the testing chamber, and the door of the testing chamber away from the fluorescent ultraviolet lamp is located between the other two adjacent sides of the T-shaped partition.

[0015] Compared with the prior art, this utility model provides a PVDF waterborne coating performance testing device, which has the following beneficial effects: This PVDF waterborne coating performance testing device features a motor-driven turntable rotation and a partition channel linkage control system that enables automated sample switching. This not only reduces errors caused by manual operation but also, through its multi-parameter synchronous testing design, ensures stronger correlation between performance data under different environments, providing a more comprehensive reflection of the aging patterns of coatings in actual use. Furthermore, the enclosed testing chamber structure effectively reduces pollution caused by solvent evaporation, and the simultaneous testing of three sets of samples improves resource utilization, balancing environmental protection and economic needs while ensuring testing accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is a cross-sectional schematic diagram of the coating substrate structure of this utility model; Figure 4 for Figure 3 A magnified view of part A in the diagram; Figure 5 This is a cross-sectional schematic diagram of the partition channel structure of this utility model; Figure 6 for Figure 5 A magnified view of part B in the diagram.

[0017] In the diagram: 1. Testing box; 2. Base box; 3. T-shaped partition; 4. Base plate; 5. Sleeve; 6. Turntable; 7. Partition; 8. Fixing frame; 9. Square hole; 10. Threaded rod; 11. Limiting ring; 12. Upright pole; 13. Circular hole; 14. Motor; 15. Insertion hole; 16. Mounting rod; 17. Annular protrusion; 18. Circular groove; 19. Spring; 20. Spherical protrusion; 21. Temperature and humidity control module; 22. Fluorescent ultraviolet lamp. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-6 A PVDF water-based coating performance testing device includes a testing chamber 1 and a substrate 4. The testing chamber 1 has a door installed on its open side. The substrate 4 is placed inside the testing chamber 1 and is used to coat the coating to be tested. The device also includes: The base box 2 is located on the bottom surface inside the test chamber 1 and is snapped into the test chamber 1. The T-shaped partition 3 is installed inside the test box 1. The three sides of the T-shaped partition 3 are fixedly connected to the three sides inside the test box 1 respectively. The T-shaped partition 3 is above the base box 2 and fits against the base box 2. A rotating and moving structure is installed inside the base box 2; Three sets of coated substrate structures are set on the rotating moving structure. The three sets of coated substrate structures are respectively between the two adjacent sides of the T-shaped partition 3. Each of the three sets of coated substrate structures is connected to a substrate 4. Square holes 9 are formed on the T-shaped partition 3. Square holes 9 are formed through the three sides of the T-shaped partition 3. The square holes 9 correspond to the structure of the coating substrate. A mounting bracket 8 is installed on the top surface of the testing box 1, and the legs of the mounting bracket 8 are fixedly connected to the top surface of the testing box 1. The three sets of partition channel structures are set on the fixed frame 8, and the three sets of partition channel structures correspond to the square holes 9.

[0020] Furthermore, a circular hole 13 is provided through the side of the base box 2 facing away from the bottom surface of the detection box 1. An annular groove is provided on the cylindrical surface of the circular hole 13 extending towards the base box 2. The circular hole 13 is used to install the rotating and moving structure.

[0021] Furthermore, the rotating and moving structure includes a motor 14 and a turntable 6. The bottom surface of the main body of the motor 14 is fixedly connected to the bottom surface inside the base box 2. The output shaft of the motor 14 faces the circular hole 13. The turntable 6 is fixedly connected to the output shaft of the motor 14. The turntable 6 is rotatably connected to the circular hole 13. A protrusion is fixedly connected to the cylindrical surface of the turntable 6. The protrusion engages with the annular groove of the circular hole 13. The motor 14 is used to drive the turntable 6 to rotate inside the circular hole 13. The turntable 6 is used to install the coating substrate structure.

[0022] Furthermore, the coating substrate structure includes sleeves 5 and mounting rods 16. Three sleeves 5 are fixedly connected to the side of the turntable 6 away from the motor 14, which are evenly distributed around the circumference of the turntable 6. The three sleeves 5 are respectively located between the two adjacent sides of the T-shaped partition 3. The mounting rods 16 are fixedly connected to one side of the substrate 4. The mounting rods 16 of the three substrates 4 are respectively connected to the three sleeves 5. The sleeves 5 and the mounting rods 16 are used to movably connect the substrate 4 and the turntable 6. The number of sleeves 5 facilitates the simultaneous testing of multiple coatings, and can simultaneously apply coatings and perform anti-aging tests.

[0023] Furthermore, annular protrusions 17 are fixedly connected to the cylindrical surface of the mounting rod 16. The annular protrusions 17 are located at the end of the mounting rod 16 away from the substrate 4, and are used to strengthen the connection between the substrate 4 and the turntable 6.

[0024] Furthermore, the inner cylindrical surface of the sleeve 5 is provided with multiple circular grooves 18 evenly distributed along the circumference of the sleeve 5. A spring 19 is fixedly connected to the opposite side of the opening of the circular groove 18. A spherical protrusion 20 is fixedly connected to the other end of the spring 19. The spherical protrusion 20 is inserted into the circular groove 18, with one spherical end of the spherical protrusion 20 outside the circular groove 18. An annular protrusion 17 is located between the spherical protrusion 20 and the turntable 6. The circular groove 18 is used to install the spring 19 and the spherical protrusion 20. The elastic force of the spring 19 causes the spherical protrusion 20 to extend out of the circular groove 18. The spherical protrusion 20 locks the annular protrusion 17 inside the sleeve 5, thereby locking the connection between the sleeve 5 and the mounting rod 16.

[0025] Furthermore, the top surface of the testing box 1 is provided with three insertion holes 15, which correspond to the three sides of the T-shaped partition 3. The insertion holes 15 extend to the side of the T-shaped partition 3 that is in contact with the base box 2. The insertion holes 15 correspond to the square holes 9 and extend through the square holes 9. The insertion holes 15 are used to install the partition channel structure.

[0026] Furthermore, the partition channel structure includes a partition 7, uprights 12, and a limiting ring 11. A partition 7 is inserted into each of the insertion holes 15. The partition 7 passes through the square hole 9. Two uprights 12 are fixedly connected to one side of the partition 7 outside the insertion hole 15. The other end of the uprights 12 is fixedly connected to the limiting ring 11. The partition 7 is used to close and open the square hole 9.

[0027] Furthermore, the partition channel structure also includes a threaded rod 10. One end of the threaded rod 10 is fixedly connected to a circular protrusion, and the other end of the threaded rod 10 is equipped with a handle. The top surface of the fixing frame 8 has three threaded holes that correspond to the limiting ring 11. The end of the threaded rod 10 connected to the circular protrusion passes through the threaded hole of the fixing frame 8 and the limiting ring 11. The circular protrusion of the threaded rod 10 is engaged between the upright rod 12. The end of the threaded rod 10 connected to the handle is on the side of the fixing frame 8 away from the detection box 1. The upright rod 12 and the limiting ring 11 are used to rotate and connect with the threaded rod 10 to control the opening and closing of the partition 7. The upright rod 12 rotates in the threaded hole of the fixing frame 8 to drive the partition 7 to rise and fall.

[0028] Furthermore, a temperature and humidity control module 21 is fixedly connected to the top surface of the testing chamber 1. The temperature and humidity control module 21 is located away from the door of the testing chamber 1 between the two adjacent sides of the T-shaped partition 3. A fluorescent ultraviolet lamp 22 is fixedly connected to the top surface of the testing chamber 1. The fluorescent ultraviolet lamp 22 is located away from the door of the testing chamber 1 between the other two adjacent sides of the T-shaped partition 3. The temperature and humidity control module 21 precisely regulates the temperature and humidity of the testing area, and the fluorescent ultraviolet lamp 22 is used to simulate the ultraviolet radiation environment.

[0029] Structural Description: Test Box 1: Box structure with a door on one side, forming a closed space inside, serving as the main shell of the test device, accommodating other structures and providing the test environment; Base box 2: Box-shaped structure, snapped into the bottom surface of the test box 1, with a circular hole 13 and an annular groove on the top surface to fix and install the rotating and moving structure and support the base plate rotation system; T-shaped partition 3: It is in the shape of "T" and its three sides are fixed to the inner wall of the detection box 1. It covers the top of the base box 2 and divides the interior of the detection box 1 into three adjacent areas. A square hole 9 is opened to connect the substrate movement path. Substrate 4: Plate-shaped structure with a fixed mounting rod 16 on one side, which carries the PVDF water-based coating to be tested and serves as a sample carrier for performance testing; Sleeve 5: Cylindrical shape, three evenly distributed on the top surface of turntable 6, sleeved with mounting rod 16 of substrate 4, movably connecting substrate 4 and turntable 6, supporting simultaneous detection of multiple samples; Turntable 6: Circular disc with protrusions on the cylindrical surface and three sleeves 5 fixed on the bottom. It rotates under the drive of motor 14, which drives the three sets of substrates 4 to switch detection areas. Partition 7: Plate-shaped, can be inserted into the top hole 15 of the detection box 1 and pass through the square hole 9. The square hole 9 can be opened or closed by lifting and lowering to isolate different detection areas. Fixed frame 8: Frame structure, the legs are fixed to the top surface of the test box 1, the top surface is provided with threaded holes, and the partition channel structure is installed to provide mechanical support; Square hole 9: A rectangular through hole opened on three sides of the T-shaped partition 3, corresponding to the structure of the coated substrate, serving as a channel for the movement of the substrate 4, and cooperating with the partition 7 to control the connectivity of the area; Threaded rod 10: rod-shaped, with a round protrusion at one end and a handle at the other end, and a thread in the middle section. When rotated, it drives the upright rod 12 to rise and fall through the threaded hole, controlling the position of the partition 7. Limiting ring 11: A ring structure, fixed to the top of the upright 12, and cooperates with the threaded rod 10 to limit the rotation trajectory of the upright 12 and ensure the stable lifting and lowering of the partition 7; Upright pole 12: rod-shaped, with two poles fixed to the outside of each partition 7, and a limiting ring 11 connected to the top, connecting the partition 7 and the threaded rod 10, transmitting rotational power to control the lifting and lowering of the partition 7; Circular hole 13: A circular through hole opened on the top surface of the base box 2, with an annular groove on the inner wall, for mounting the turntable 6. The turntable 6 is engaged with the protrusion of the turntable 6 through the annular groove, thus restricting the axial movement of the turntable 6. Motor 14: The main body is fixed inside the bottom surface of the base box 2, with the output shaft facing upward, driving the turntable 6 to rotate, realizing the automatic switching of the substrate 4 in different detection areas; Socket 15: A circular hole on the top surface of the test box 1, extending through to the mating surface of the T-shaped partition 3 and the base box 2, into which the partition 7 is inserted and aligned with the square hole 9, forming a channel for the movement of the substrate 4; Mounting rod 16: rod-shaped, one end is fixed to the side of the substrate 4, and the other end is provided with an annular protrusion 17. It is inserted into the sleeve 5 to connect the substrate 4 and the turntable 6, and is locked in conjunction with the spherical protrusion 20. Annular bump 17: An annular protrusion, fixed at the end of the mounting rod 16 away from the substrate 4, and engaged with the spherical bump 20 inside the sleeve 5 to enhance the connection stability between the substrate 4 and the turntable 6. Circular groove 18: A circular groove formed on the inner wall of sleeve 5, evenly distributed along the circumference, to accommodate spring 19 and spherical protrusion 20, providing installation space for the elastic locking structure; Spring 19: A spiral elastic element with its two ends connected to the bottom surface of the circular groove 18 and the spherical protrusion 20, respectively. It pushes the spherical protrusion 20 out through elastic force and clamps the annular protrusion 17 of the mounting rod 16. Spherical bump 20: A hemispherical protrusion with one end outside the circular groove 18 and the other end connected to a spring 19. It engages with the annular bump 17, locking the connection between the base plate 4 and the turntable 6, and supports quick disassembly. Temperature and humidity control module 21: fixed on the top surface inside the detection box 1, located on one side of the T-shaped partition 3, precisely regulates the temperature and humidity of the detection area to simulate a hot and humid environment; Fluorescent UV lamp 22: A strip-shaped lamp fixed on the top surface of the test chamber 1, located on the other side of the T-shaped partition 3, emitting ultraviolet light to simulate outdoor ultraviolet radiation and test the weather resistance of the coating.

[0030] Working principle: In actual operation, the PVDF water-based coating performance testing device first requires the PVDF water-based coating to be tested to be evenly applied to the surface of the substrate 4. Then, the substrate is inserted into the sleeve 5 evenly distributed around the outer periphery of the turntable 6 through the mounting rod 16 on one side. At this time, the spring 19 installed in the circular groove 18 on the cylindrical surface of the sleeve 5 will generate a thrust due to elastic deformation, pushing out the spherical protrusion 20 and tightly locking it onto the annular protrusion 17 at the end of the mounting rod 16. This elastic locking structure can ensure that the substrate remains stable during the testing process and can be easily replaced by applying force when the sample needs to be changed. After quick disassembly and substrate fixation, the motor 14 inside the base box 2 starts working. Its output shaft drives the turntable 6 to rotate smoothly in the circular hole 13 on the top surface of the base box 2. Due to the snap-fit ​​design between the protrusion on the cylindrical surface of the turntable and the annular groove of the circular hole, the turntable will not shift axially during rotation, thus ensuring that the three sets of substrates 4 can move sequentially to different functional areas inside the detection box 1 according to the preset trajectory. The temperature and humidity control module 21 and the fluorescent ultraviolet lamp 22 installed on the top surface of the detection box 1 correspond to different detection environment simulation functions, while the square hole 9 opened on the T-shaped partition 3 allows access through the partition channel structure. To achieve area isolation and connectivity control, when a certain group of substrates needs to enter a specific testing area, the operator can rotate the threaded rod 10 to move the upright rod 12 up and down, thereby controlling the lifting and lowering state of the partition 7. If the partition 7 rises, the corresponding square hole 9 opens, allowing the substrate to enter the target area through the channel. If the partition 7 falls, the square hole 9 closes, effectively isolating this area from other spaces and preventing interference from different environmental factors. During the continuous rotation of the turntable, the three groups of substrates will complete different testing items in sequence. When the first group of substrates moves to below the temperature and humidity control module 21, the module will precisely... The temperature and humidity of the area are precisely controlled to simulate the service scenario of the coating in a hot and humid environment. When the second set of substrates is moved under the fluorescent ultraviolet lamp 22, the lamp will emit ultraviolet light to simulate the coating aging process caused by outdoor ultraviolet radiation. The third set of substrates can be used as blank control samples or wait to be rotated to the detection area. This multi-station parallel detection mode greatly improves efficiency. After all the detection items are completed, the operator can quickly disassemble the substrate again through the elastic connection structure of the spherical bump 20 and the annular bump 17 to obtain the performance data of the surface coating (such as adhesion, color change, cracking, etc.).

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PVDF water-based coating performance testing device, comprising a testing chamber (1) and a substrate (4), wherein a door is installed on the open side of the testing chamber (1), and the substrate (4) is provided inside the testing chamber (1), the substrate (4) being used to apply the coating to be tested, characterized in that: Also includes: The base box (2) is located on the bottom surface of the test box (1) and is snapped into the test box (1); The T-shaped partition (3) is set inside the detection box (1). The three sides of the T-shaped partition (3) are fixedly connected to the three sides inside the detection box (1). The T-shaped partition (3) is above the base box (2) and fits against the base box (2). A rotating and moving structure disposed within the base box (2); The three sets of coated substrate structures are disposed on the rotating moving structure. The three sets of coated substrate structures are respectively located between the two adjacent sides of the T-shaped partition (3). The substrate (4) is connected to each of the three sets of coated substrate structures. A square hole (9) is opened on the T-shaped partition (3). A square hole (9) is opened through the three sides of the T-shaped partition (3). The square hole (9) corresponds to the structure of the coating substrate. A fixing frame (8) is set on the top surface of the test box (1), and the legs of the fixing frame (8) are fixedly connected to the top surface of the test box (1). The three sets of partition channel structures are set on the fixed frame (8), and the three sets of partition channel structures correspond to the square hole (9).

2. The PVDF water-based coating performance testing device according to claim 1, characterized in that, The base box (2) has a circular hole (13) through it on the side facing away from the bottom of the test box (1). An annular groove extends from the cylindrical surface of the circular hole (13) toward the base box (2).

3. The PVDF water-based coating performance testing device according to claim 2, characterized in that, The rotating moving structure includes a motor (14) and a turntable (6). The bottom surface of the main body of the motor (14) is fixedly connected to the bottom surface inside the base box (2). The output shaft of the motor (14) faces the circular hole (13). The turntable (6) is fixedly connected to the output shaft of the motor (14). The turntable (6) is rotatably connected to the circular hole (13). A protrusion is fixedly connected to the cylindrical surface of the turntable (6). The protrusion engages with the annular groove of the circular hole (13).

4. The PVDF water-based coating performance testing device according to claim 3, characterized in that, The coating substrate structure includes sleeves (5) and mounting rods (16). Three sleeves (5) are fixedly connected to the side of the turntable (6) away from the motor (14), which are evenly distributed along the circumference of the turntable (6). The three sleeves (5) are respectively between the two adjacent sides of the T-shaped partition (3). The mounting rods (16) are fixedly connected to one side of the substrate (4). The mounting rods (16) of the three substrates (4) are respectively connected to the three sleeves (5).

5. The PVDF water-based coating performance testing device according to claim 4, characterized in that, Annular protrusions (17) are fixedly connected to the cylindrical surface of the mounting rod (16), with the annular protrusions (17) located at the end of the mounting rod (16) away from the substrate (4).

6. The PVDF water-based coating performance testing device according to claim 5, characterized in that, The inner cylindrical surface of the sleeve (5) is provided with a plurality of circular grooves (18) evenly distributed along the circumference of the sleeve (5). A spring (19) is fixedly connected to the opposite side of the opening of the circular groove (18). A spherical protrusion (20) is fixedly connected to the other end of the spring (19). The spherical protrusion (20) is inserted into the circular groove (18). One end of the spherical surface of the spherical protrusion (20) is outside the circular groove (18). The annular protrusion (17) is between the spherical protrusion (20) and the turntable (6).

7. The PVDF water-based coating performance testing device according to claim 1, characterized in that, The top surface of the testing box (1) is provided with three insertion holes (15). The insertion holes (15) correspond to the three sides of the T-shaped partition (3). The insertion holes (15) extend to the side of the T-shaped partition (3) that is in contact with the base box (2). The insertion holes (15) correspond to the square hole (9) and extend through the square hole (9).

8. The PVDF waterborne coating performance testing device according to claim 7, characterized in that, The partition channel structure includes a partition (7), a vertical rod (12), and a limiting ring (11). The partition (7) is inserted into each of the insertion holes (15). The partition (7) passes through the square hole (9). Two vertical rods (12) are fixedly connected to one side of the partition (7) outside the insertion hole (15). The other end of the vertical rod (12) is fixedly connected to the limiting ring (11).

9. The PVDF waterborne coating performance testing device according to claim 8, characterized in that, The partition channel structure also includes a threaded rod (10), one end of which is fixedly connected to a circular protrusion, and the other end of which is equipped with a handle. The top surface of the fixing frame (8) is provided with three threaded holes, which correspond to the limiting ring (11). The end of the threaded rod (10) connected to the circular protrusion passes through the threaded hole of the fixing frame (8) and the limiting ring (11). The circular protrusion of the threaded rod (10) is engaged between the uprights (12). The end of the threaded rod (10) connected to the handle is on the side of the fixing frame (8) away from the detection box (1).

10. The PVDF waterborne coating performance testing device according to claim 1, characterized in that, A temperature and humidity control module (21) is fixedly connected to the top surface of the test box (1). The door of the temperature and humidity control module (21) away from the test box (1) is between the two adjacent sides of the T-shaped partition (3). A fluorescent ultraviolet lamp (22) is fixedly connected to the top surface of the test box (1). The door of the fluorescent ultraviolet lamp (22) away from the test box (1) is between the other two adjacent sides of the T-shaped partition (3).

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