A new material polycarbonate film corrosion resistance detection device

Abstract

This invention discloses a novel device for testing the corrosion resistance of polycarbonate films, belonging to the field of corrosion resistance testing technology. It includes a housing and a door. The housing has an openable and closable door. A second cylinder is symmetrically fixed to the upper inner side of the housing, and a positioning mechanism is fixed to the output end of the second cylinder for positioning the polycarbonate film sample. This novel device for testing the corrosion resistance of polycarbonate films, driven by a motor and driven by gears, a first rack, and a second rack, achieves synchronous, reverse, and reciprocating motion of the dripping head and the friction roller. This allows for automatic completion of the cycle of uniform dripping, friction application, and scraping off excess liquid within one test cycle, accurately simulating the complex scenario of alternating or simultaneous action of corrosive media and mechanical wear in reality. This makes the test conditions closer to the actual usage environment of the film, ensuring the accuracy of the evaluation results.

Description

Technical Field

[0001] This invention relates to the field of corrosion resistance testing technology, specifically to a novel device for testing the corrosion resistance of polycarbonate films. Background Technology

[0002] New material polycarbonate (PC) film is widely used in electronic screens, automotive lighting, building curtain walls and outdoor protective films due to its excellent light transmittance, impact resistance and dimensional stability. In actual use, PC film is often exposed to the combined effects of chemical corrosion (such as acid rain and industrial pollutants) and mechanical wear (such as wind and sand blowing and wiping cleaning). Its failure mode is usually the result of the synergistic effect of corrosion and stress fatigue, rather than a single chemical erosion.

[0003] Existing thin film corrosion resistance testing devices, such as the PFA thin film corrosion resistance testing device (publication number CN120702974B), relate to the field of thin film corrosion resistance testing technology. It includes a housing, with a mounting plate fixedly connected inside the housing. A mounting frame is fixedly connected to the upper end of the mounting plate. A rotating column is rotatably connected to the inner top wall of the mounting frame. A rotating plate is fixedly connected to the lower end of the rotating column. Multiple corrosive liquid dripping mechanisms are provided on the rotating plate, evenly spaced along the circumference of the rotating plate. A rotating mechanism connected to the rotating column is provided on the mounting frame. A mounting groove is provided at the upper end of the mounting frame, and a limiting mechanism is provided inside the mounting groove. A partition plate is fixed inside the housing below the mounting plate. This invention, through the movement of the PFA thin film, enables different corrosive liquids to sequentially test the corrosion resistance of different positions on the PFA thin film, making the corrosion resistance testing process more efficient.

[0004] In actual use, the aforementioned existing detection devices only achieve corrosion resistance detection by simply dropping corrosive liquid and using a camera. First, the corrosive liquid tends to aggregate after dropping, making it difficult to achieve uniform corrosion of the film. Moreover, the aggregated corrosive liquid can also obstruct the corroded area, affecting the clarity of the image. Second, it can only assess the material's resistance in a static chemical medium and cannot simulate the complex scenario of simultaneous or alternating action of corrosive media and mechanical stress (such as pressure and friction) in actual use, making it difficult to meet the needs of multi-functional detection. Summary of the Invention

[0005] The purpose of this invention is to provide a novel device for testing the corrosion resistance of polycarbonate films, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a novel material polycarbonate film corrosion resistance testing device, comprising a housing and a door, wherein the housing is equipped with an openable and closable door, and a second cylinder is symmetrically fixed on the upper inner side of the housing, and a mounting bracket is fixed to the output end of the second cylinder;

[0007] The positioning mechanism is used to position the polycarbonate film of the sample to be tested and to assist in the collection of excess etching liquid on the surface of the polycarbonate film. The positioning mechanism is installed at the lower inside of the chamber.

[0008] The dripping assembly, through reciprocating left and right movements, ensures that the corrosive liquid is evenly covered on the surface of the polycarbonate film, and the dripping assembly is mounted on a mounting bracket;

[0009] A friction assembly is used to simulate the mechanical friction of polycarbonate films under different pressure conditions during use, and the friction assembly is mounted on a mounting bracket.

[0010] Preferably, the positioning mechanism includes a base fixed inside the box, and a drain valve is installed on the side of the base. An inclined platform is fixed inside the base, and detection mechanisms are fixed at equal intervals on the inclined platform. A liquid guiding groove is symmetrically opened on the left and right sides inside the base. Through the above structure, a basic guarantee can be provided for the subsequent collection of residual corrosion liquid on the surface of polycarbonate film.

[0011] Preferably, the upper boss of the base and the pressure cap are nested together, and the pressure cap is symmetrically fixed with handles on the left and right sides. A sealing strip is fixed inside the pressure cap, and the sealing strip contacts the upper boss of the base to achieve a seal. The pressure cap has evenly spaced leakage outlets on its side, and the leakage outlets are connected to the drainage groove inside the pressure cap. The drainage groove is also connected to the drainage outlet, and the drainage outlet and the drainage channel are nested together. By nesting the pressure cap and the base, the polycarbonate film can be pressed and positioned. The leakage outlet, drainage channel, and drainage outlet can guide the residual corrosion liquid on the surface of the polycarbonate film.

[0012] Preferably, the detection mechanism includes a first cylinder fixed on an inclined platform, and a fixed plate is fixed to the output end of the first cylinder. A pressure sensor is fixed to the fixed plate, and a first elastic airbag is fixed between the pressure sensor and the movable plate. Vertical rods are symmetrically fixed to the lower end face of the movable plate, and the vertical rods are slidably connected to the fixed plate. A piercing needle is fixed to the upper end face of the movable plate, and the upper end face of the piercing needle is lower than the upper end face of the base. With the above structure, the puncture performance of the polycarbonate film can be detected after the polycarbonate film has been corroded.

[0013] Preferably, a pressure frame is fixed at the front end of the mounting bracket, and the pressure frame contacts the pressure cover to achieve positioning. An industrial camera is symmetrically fixed on the left and right sides of the inner side of the pressure frame. The pressure frame can achieve sealing protection to prevent the corrosive liquid from splashing out, and the industrial camera can monitor the corrosion status of the polycarbonate film surface.

[0014] Preferably, the dripping assembly includes a motor fixed on a mounting bracket, with a disk fixed to the output end of the motor and a convex shaft fixed on the disk. The convex shaft is slidably connected to a slide plate, and the slide plate is fixedly connected to a first rack. The first rack has first sliding rods symmetrically fixed on its left and right sides, and the first sliding rods are slidably connected to the mounting bracket. The motor drives the disk and the convex shaft to rotate, and the sliding action between the convex shaft and the slide plate provides a basic force for the left and right reciprocating motion of the first rack. The sliding guide action between the first sliding rods and the mounting bracket ensures the stability of the movement of the first rack.

[0015] Preferably, the first rack is fixed to one end of the connecting rod, and the other end of the connecting rod is fixed to the liquid distribution plate. The connecting rod is slidably connected to the pressure frame. At the same time, drip heads are uniformly fixed on the lower end face of the liquid distribution plate. The liquid distribution plate is connected to the solenoid valve through a conduit, and the solenoid valve is connected to the liquid storage tank through a conduit. The liquid storage tank is fixed on the pressure frame. With the above structure, the corrosive liquid can be quantitatively released. Combined with the movement of the liquid distribution plate driven by the first rack, the corrosive liquid can be made into full contact with the polycarbonate film.

[0016] Preferably, the friction assembly includes a gear connected to the mounting bracket by a bearing, and the gear is meshed with the first rack and the gear is meshed with the second rack. At the same time, second slide rods are symmetrically fixed on the second rack, and the second slide rods are slidably connected to the mounting bracket. Through the transmission action between the gear, the first rack and the second rack, a basic guarantee can be provided for the left and right reciprocating motion of the second rack. In addition, the sliding guide action between the second slide rod and the mounting bracket can ensure the stability of the movement of the second rack.

[0017] Preferably, a support plate is fixed on the second rack, and the support plate is slidably connected to the pressure frame. A second elastic airbag is symmetrically fixed on the support plate, and a horizontal plate is fixed on the upper end of the second elastic airbag. A threaded rod is fixed on the horizontal plate, and a counterweight is sleeved on the threaded rod. Through the above structure, the pressure between the friction roller and the polycarbonate film can be adjusted to simulate the detection requirements under different friction conditions.

[0018] Preferably, guide rods are symmetrically fixed to the front and back of the lower end of the cross plate, and a movable frame is fixed to the lower end of the guide rods. A friction roller is connected to the movable frame by a bearing. The friction roller is made of polytetrafluoroethylene. The lower end of the friction roller is lower than the lower end of the pressure frame. Through the action of the friction roller, the etching liquid on the surface of the polycarbonate film can be evenly coated to ensure the etching effect, and the friction action can be simulated to better meet the actual testing needs.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This new material, polycarbonate film corrosion resistance testing device, is driven by a motor and, in conjunction with the transmission action of gears, a first rack and a second rack, realizes the synchronous, reverse, and reciprocating motion of the dripping head and the friction roller. Thus, it can automatically complete the cycle of uniform dripping, friction application, and scraping off excess liquid within one test cycle, accurately simulating the complex scenario of alternating or simultaneous action of corrosive media and mechanical wear in reality. This makes the test conditions closer to the actual use environment of the film, ensuring the accuracy of the evaluation results. Furthermore, by spreading the corrosion liquid evenly, it can avoid the accumulation of corrosion liquid, which would affect the clarity of the images taken of the corroded areas.

[0021] 2. The new polycarbonate film corrosion resistance testing device, through an integrated puncture testing mechanism, can complete the puncture strength test by driving the puncture needle with a cylinder after the corrosion test without moving or disassembling the corroded film sample. This avoids the accidental damage or stress state changes caused by sample transfer and secondary clamping in traditional methods. It can most realistically measure the residual mechanical properties of the material at a predetermined location (corrosion zone) after corrosion, greatly improving the accuracy and reliability of the data.

[0022] 3. This new polycarbonate film corrosion resistance testing device, through the nested interference fit between the pressure cap and the base, not only compresses and fixes the film, but also forms a seal between the inner sealing strip and the base boss, effectively preventing liquid from seeping into the lower mechanism. The leakage port and drainage groove designed on the pressure cap and the liquid guiding groove on the base form an efficient guiding channel. Under the action of the friction roller, excess corrosive liquid is actively pushed to the edge and quickly guided into the lower part of the base through this guiding channel, effectively avoiding local accumulation of corrosive liquid on the sample surface, ensuring the uniformity of corrosion, and improving the repeatability and comparability of test results. At the same time, the entire test process is carried out in a sealed chamber. With the help of the liquid collection system, the risk of corrosive liquid leakage or splashing is greatly reduced, ensuring the safety of operators and the cleanliness of the laboratory environment.

[0023] 4. This new material, the polycarbonate film corrosion resistance testing device, can precisely adjust the pressure of the friction roller on the film by changing the counterweight, so as to simulate different friction states from slight contact to heavy extrusion. This allows the device to not only be used for routine quality testing, but also to meet the needs of comparing the performance differences of polycarbonate films with different formulations, processes or functional coatings under a series of harsh conditions during the research and development process, effectively improving the adaptability of the device. Attached Figure Description

[0024] Figure 1 This is a frontal three-dimensional structural diagram of the overall composition of the device of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the box body of the present invention viewed from below;

[0026] Figure 3 This is a cross-sectional three-dimensional structural diagram of the positioning mechanism of the present invention;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the pressure cap of the present invention, viewed from below.

[0028] Figure 5 This is a three-dimensional structural diagram of the detection mechanism of the present invention;

[0029] Figure 6 This is a frontal perspective three-dimensional structural diagram of the mounting bracket of the present invention;

[0030] Figure 7 This is a frontal perspective three-dimensional structural diagram of the dripping component and the friction component of the present invention;

[0031] Figure 8 This is a rear-view three-dimensional structural diagram of the droplet assembly and friction assembly of the present invention.

[0032] In the diagram: 1. Box body; 2. Box door; 3. Positioning mechanism; 301. Base; 302. Drain valve; 303. Inclined platform; 304. Liquid guide groove; 305. Pressure cap; 306. Handle; 307. Sealing strip; 308. Leakage port; 309. Drain groove; 310. Drain outlet; 4. Detection mechanism; 401. First cylinder; 402. Fixing plate; 403. Pressure sensor; 404. First elastic airbag; 405. Movable plate; 406. Vertical rod; 407. Piercing needle; 5. Second cylinder; 6. Mounting bracket; 601. Pressure frame; 602. Industrial phase 7. Drip assembly; 701. Motor; 702. Disc; 703. Convex shaft; 704. Slide plate; 705. First rack; 706. First slide rod; 707. Connecting rod; 708. Distributor plate; 709. Drip head; 710. Solenoid valve; 711. Storage tank; 8. Friction assembly; 801. Gear; 802. Second rack; 803. Second slide rod; 804. Support plate; 805. Second elastic airbag; 806. Horizontal plate; 807. Threaded rod; 808. Counterweight; 809. Guide rod; 810. Movable frame; 811. Friction roller. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-8 The present invention provides a technical solution: a new material polycarbonate film corrosion resistance testing device, including a box body 1 and a box door 2. The box body 1 is equipped with an openable and closable box door 2. A second cylinder 5 is symmetrically fixed on the upper inner side of the box body 1. A mounting bracket 6 is fixed on the output end of the second cylinder 5.

[0035] Positioning mechanism 3 is used to position the polycarbonate film of the sample to be tested and to assist in collecting excess corrosion liquid on the surface of the polycarbonate film. Positioning mechanism 3 is installed at the lower end of the inner side of the box 1.

[0036] The dripping assembly 7 reciprocates left and right to ensure that the corrosive liquid is evenly covered on the surface of the polycarbonate film. The dripping assembly 7 is mounted on the mounting bracket 6.

[0037] Friction component 8 is used to simulate the mechanical friction of polycarbonate film under different pressure conditions. Friction component 8 is mounted on mounting bracket 6.

[0038] The positioning mechanism 3 includes a base 301 fixed inside the housing 1, a drain valve 302 installed on the side of the base 301, an inclined platform 303 fixed inside the base 301, and detection mechanisms 4 fixed at equal intervals on the inclined platform 303. A liquid guiding groove 304 is symmetrically opened on the left and right sides inside the base 301. The upper boss of the base 301 is nested with the pressure cap 305, and handles 306 are symmetrically fixed on the pressure cap 305. A sealing strip 307 is fixed inside the pressure cap 305, and the sealing strip 307 contacts the upper boss of the base 301 to achieve a seal. A drain outlet 308 is evenly opened on the side of the pressure cap 305, and the drain outlet 308 communicates with a drain groove 309 opened inside the pressure cap 305. The drain groove 309 communicates with a drain port 310, and the drain port 310 is nested with the liquid guiding groove 304.

[0039] When using this new material, polycarbonate film corrosion resistance testing device, such as Figures 1-8 As shown, firstly, the cut polycarbonate film is laid flat on the upper boss of the base 301, and the size of the polycarbonate film is larger than the size of the upper boss of the base 301. Then, the cap 305 is assembled with the base 301 by holding the handle 306. Through the nesting action between the cap 305 and the upper boss of the base 301 and the nesting action between the drain port 310 and the guide groove 304, the cap 305 can be positioned. The cap 305 will cause the edge of the polycarbonate film to bend, so that the edge of the polycarbonate film fills the gap between the cap 305 and the upper boss of the base 301, so that the cap 305 and the upper boss of the base 301 form an interference connection, thereby achieving the pressing and positioning of the polycarbonate film.

[0040] The mounting bracket 6 has a pressure frame 601 fixed to its front end, and the pressure frame 601 contacts the pressure cover 305 for positioning. An industrial camera 602 is symmetrically fixed to the inner side of the pressure frame 601. The dripping assembly 7 includes a motor 701 fixed to the mounting bracket 6, and a disc 702 is fixed to the output end of the motor 701. A convex shaft 703 is fixed to the disc 702, and the convex shaft 703 is slidably connected to the slide plate 704. The slide plate 704 is fixedly connected to the first rack 705, and a first sliding shaft 703 is symmetrically fixed to the first rack 705. The first slide rod 706 is slidably connected to the mounting bracket 6; the first rack 705 is fixed to one end of the connecting rod 707, and the other end of the connecting rod 707 is fixed to the liquid distribution plate 708, and the connecting rod 707 is slidably connected to the pressure frame 601. At the same time, the lower end face of the liquid distribution plate 708 is uniformly fixed with drip heads 709. The liquid distribution plate 708 is connected to the solenoid valve 710 through a conduit, and the solenoid valve 710 is connected to the liquid storage tank 711 through a conduit. The liquid storage tank 711 is fixed on the pressure frame 601.

[0041] After the polycarbonate film is installed, as follows Figures 1-8 As shown, the chamber door 2 is closed to ensure that the corrosion detection process is carried out in a sealed space. Then, by controlling the extension of the second cylinder 5, the mounting bracket 6, the dripping assembly 7, and the friction assembly 8 can be moved down until the pressure frame 601 contacts the pressure cap 305 to achieve positioning. At this time, the lower end face of the friction roller 811 is in contact with the polycarbonate film. During corrosion detection, the solenoid valve 710 is opened, so that the corrosive liquid in the storage tank 711 enters the liquid distribution plate 708 under the action of gravity through the conduit and the solenoid valve 710, and drips through the drip head 709. Then, the motor 701 is started to drive the disc 702 and the cam shaft 703 to rotate. With the sliding action between the cam shaft 703 and the slide plate 704, the first rack 705 and the connecting rod 70 can be moved. 7. The dispensing plate 708 and the dripping head 709 perform orderly left-right reciprocating movements. Combined with the sliding guide action between the first slide rod 706 and the mounting frame 6, the stability of the movement of the first rack 705, connecting rod 707, dispensing plate 708 and dripping head 709 can be ensured. By adjusting the position of the dripping head 709, the dripping corrosive liquid can be evenly dispersed on the surface of the polycarbonate film, ensuring the uniformity of corrosion. In addition, with the protective function of the pressure frame 601, splashing of the dripping corrosive liquid when it comes into contact with the surface of the polycarbonate film can be avoided, thus preventing contamination and better meeting the testing requirements. During the corrosion process, the surface condition of the polycarbonate film can be monitored by the industrial camera 602 to determine the corrosion resistance of the polycarbonate film.

[0042] The friction assembly 8 includes a gear 801 connected to the mounting bracket 6 by a bearing. The gear 801 is meshed with a first rack 705 and a second rack 802. A second slide rod 803 is symmetrically fixed to the second rack 802, and the second slide rod 803 is slidably connected to the mounting bracket 6. A support plate 804 is fixed to the second rack 802, and the support plate 804 is slidably connected to the pressure frame 601. A second elastic airbag 805 is symmetrically fixed to the support plate 804, and a horizontal plate 806 is fixed to the upper end of the second elastic airbag 805. A threaded rod 807 is fixed to the horizontal plate 806. A counterweight 808 is fitted onto the lower end of the horizontal plate 806. Guide rods 809 are symmetrically fixed to the front and back of the lower end of the horizontal plate 806. A movable frame 810 is fixed to the lower end of the guide rods 809. A friction roller 811 is connected to the movable frame 810 by a bearing. The friction roller 811 is made of polytetrafluoroethylene. The lower end face of the friction roller 811 is lower than the lower end face of the pressure frame 601.

[0043] During corrosion detection, such as Figures 1-8 As shown, when the first rack 705 performs orderly left-right reciprocating motion, the transmission action between the first rack 705, gear 801, and second rack 802 enables the support plate 804 and friction roller 811 to perform synchronized orderly left-right reciprocating motion. The direction of movement of the friction roller 811 is opposite to the direction of movement of the dripping head 709. During the movement of the support plate 804 and friction roller 811, the sliding guide action between the second slide rod 803 and the mounting frame 6 ensures the stability of the movement of the support plate 804 and friction roller 811. Through the left-right reciprocating motion of the friction roller 811, the... It can generate a certain amount of friction on the surface of polycarbonate film to simulate the corrosion resistance of polycarbonate film under mechanical friction. It can also uniformly coat the surface of polycarbonate film with corrosion liquid to ensure the uniformity of corrosion liquid. When there is a lot of corrosion liquid remaining on the surface of polycarbonate film, the friction roller 811 can push the corrosion liquid to both sides. Thus, the residual corrosion liquid can enter the base 301 through the drain port 308, drain trough 309, drain port 310 and guide trough 304 for collection, avoiding the accumulation of corrosion liquid and causing local excessive corrosion, which would affect the accuracy of the test data.

[0044] Furthermore, during the use of the device, by adjusting the weight of the counterweight 808 that is sleeved on the threaded rod 807, and in conjunction with the elastic action of the second elastic airbag 805, the pressure generated by the friction roller 811 on the polycarbonate film can be adjusted, so as to simulate the corrosion resistance effect of the polycarbonate film under different pressure friction conditions and better meet the actual use requirements.

[0045] The detection mechanism 4 includes a first cylinder 401 fixed on the inclined platform 303, and a fixed plate 402 fixed to the output end of the first cylinder 401. A pressure sensor 403 is fixed on the fixed plate 402. At the same time, a first elastic airbag 404 is fixed between the pressure sensor 403 and the movable plate 405. Vertical rods 406 are symmetrically fixed on the lower end face of the movable plate 405. The vertical rods 406 and the fixed plate 402 are slidably connected. A piercing needle 407 is fixed on the upper end face of the movable plate 405. At the same time, the upper end face of the piercing needle 407 is lower than the upper end face of the base 301.

[0046] After the corrosion resistance test is completed, such as Figures 1-5As shown, by closing the solenoid valve 710 and the motor 701, and then retracting the second cylinder 5, the mounting bracket 6, the dripping assembly 7, and the friction assembly 8 can be moved upward and reset. At this time, by controlling the extension of the first cylinder 401, the fixed plate 402, the movable plate 405, and the puncture needle 407 can be moved upward. When the puncture needle 407 contacts the polycarbonate film, in conjunction with the action of the first elastic airbag 404, the puncture needle 407 can generate pressure on the pressure sensor 403 until the puncture needle 407 punctures the polycarbonate film, thereby realizing the puncture performance detection function after the polycarbonate film is corroded. There is no need to disassemble and reassemble the polycarbonate film again, ensuring the accuracy of the puncture performance detection data after the polycarbonate film is corroded.

[0047] It should be noted that, in this document, 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 process, method, article, or apparatus.

[0048] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A new material polycarbonate film corrosion resistance detection device, comprising a box (1) and a box door (2), the box (1) is provided with an openable and closable box door (2), characterized in that: The upper inner side of the housing (1) is symmetrically fixed with a second cylinder (5), and the output end of the second cylinder (5) is fixed with a mounting bracket (6). The positioning mechanism (3) is used to position the polycarbonate film of the sample to be tested and to assist in collecting excess corrosion liquid on the surface of the polycarbonate film. The positioning mechanism (3) is installed on the lower inner side of the box (1). The positioning mechanism (3) includes a base (301) fixed inside the box (1), and a drain valve (302) is installed on the side of the base (301). An inclined platform (303) is fixed inside the base (301), and a detection mechanism (4) is fixed at equal intervals on the inclined platform (303). A liquid guide groove (304) is symmetrically opened on the left and right sides inside the base (301). 1) The upper boss and the pressure cap (305) are nested together, and the pressure cap (305) is symmetrically fixed with handles (306) on the left and right sides. The inner side of the pressure cap (305) is fixed with a sealing strip (307). At the same time, the sealing strip (307) contacts the upper boss of the base (301) to achieve sealing. The side of the pressure cap (305) is evenly provided with a leakage port (308), and the leakage port (308) is connected to the drainage groove (309) provided in the pressure cap (305). The drainage groove (309) is connected to the drainage port (310), and the drainage port (310) is nested together with the liquid guide groove (304). The dripping assembly (7) reciprocates left and right to ensure that the corrosive liquid is evenly covered on the surface of the polycarbonate film. The dripping assembly (7) is mounted on the mounting frame (6). The dripping assembly (7) includes a motor (701) fixed on the mounting frame (6), and a disk (702) is fixed to the output end of the motor (701). A convex shaft (703) is fixed on the disk (702). The convex shaft (703) is slidably connected to the slide plate (704). The slide plate (704) is fixedly connected to the first rack (705), and first sliding rods (706) are symmetrically fixed on the first rack (705). Furthermore, the first slide rod (706) is slidably connected to the mounting bracket (6), the first rack (705) is fixed to one end of the connecting rod (707), and the other end of the connecting rod (707) is fixed to the liquid distribution plate (708). The connecting rod (707) is slidably connected to the pressure frame (601). At the same time, the lower end face of the liquid distribution plate (708) is uniformly fixed with drip heads (709). The liquid distribution plate (708) is connected to the solenoid valve (710) through a conduit, and the solenoid valve (710) is connected to the liquid storage tank (711) through a conduit. The liquid storage tank (711) is fixed on the pressure frame (601). A friction assembly (8) is used to simulate the mechanical friction of polycarbonate film under different pressure conditions. The friction assembly (8) is mounted on a mounting frame (6). The friction assembly (8) includes a gear (801) connected to the mounting frame (6) by a bearing. The gear (801) is meshed with a first rack (705), and the gear (801) is meshed with a second rack (802). At the same time, a second slide rod (803) is symmetrically fixed on the second rack (802). The second slide rod (803) is slidably connected to the mounting frame (6). The second rack (802) is fixed with... A support plate (804) is fixed, and the support plate (804) and the pressure frame (601) are slidably connected. A second elastic airbag (805) is symmetrically fixed on the support plate (804). A horizontal plate (806) is fixed on the upper end of the second elastic airbag (805). A threaded rod (807) is fixed on the horizontal plate (806), and a counterweight (808) is sleeved on the threaded rod (807). A guide rod (809) is symmetrically fixed on the lower end of the horizontal plate (806), and a movable frame (810) is fixed on the lower end of the guide rod (809). A friction roller (811) is connected to the movable frame (810) by a bearing.

2. The novel material polycarbonate film corrosion resistance testing device according to claim 1, characterized in that: The detection mechanism (4) includes a first cylinder (401) fixed on the inclined platform (303), and a fixed plate (402) is fixed to the output end of the first cylinder (401). A pressure sensor (403) is fixed on the fixed plate (402), and a first elastic airbag (404) is fixed between the pressure sensor (403) and the movable plate (405). Vertical rods (406) are symmetrically fixed on the lower end face of the movable plate (405), and the vertical rods (406) are slidably connected to the fixed plate (402). A piercing needle (407) is fixed on the upper end face of the movable plate (405), and the upper end face of the piercing needle (407) is lower than the upper end face of the base (301).

3. The novel material polycarbonate film corrosion resistance testing device according to claim 1, characterized in that: The mounting bracket (6) has a pressure frame (601) fixed at the front end, and the pressure frame (601) contacts the pressure cover (305) to achieve positioning. An industrial camera (602) is symmetrically fixed on the inner side of the pressure frame (601).

4. The device for testing the corrosion resistance of a new material, polycarbonate film, according to claim 1, is characterized in that: The friction roller (811) is made of polytetrafluoroethylene, and the lower end face of the friction roller (811) is lower than the lower end face of the pressure frame (601).

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