A high-temperature seawater under MAO membrane hydrophilic and corrosion resistance performance testing equipment

Abstract

The application relates to the technical field of coating testing, and particularly discloses a high-temperature seawater MAO film hydrophilicity and corrosion resistance testing equipment, which comprises two tracks and a control cabinet, a gantry is movably arranged on the two tracks, and an immersion corrosion test box, a sample drying box and a sample cleaning box are arranged in front of and behind the two tracks in parallel; a screw rod elevator is arranged at the upper end of the gantry, a lifting strip is connected to the lower end of the screw rod elevator, a plurality of through holes are arranged on the lifting strip at intervals left and right, a vertical rod is arranged in each through hole in a penetrating mode, and a sample clamp is connected to the lower end of the vertical rod; the testing equipment realizes automatic corrosion resistance testing of MAO film coating samples under different high-temperature seawaters, sample cleaning, sample drying, sample weighing and recording and other steps, has high automation integration, realizes long-term full-process unmanned automatic operation, realizes online direct measurement and weighing of the samples, and makes the whole measurement process fast, convenient and high in measurement precision.

Description

Technical Field

[0001] This invention relates to the field of coating testing technology, and specifically discloses a device for testing the hydrophilicity and corrosion resistance of MAO membranes under high temperature seawater. Background Technology

[0002] MAO (Magnetic Oxide) technology is an advanced metal surface treatment technique that can effectively improve the properties of metal surfaces. The determination of the hydrophilicity and corrosion resistance of MAO films under high-temperature seawater provides technical support for the development of functional modified coatings that integrate excellent hydrophilicity, strong bonding, and long-term corrosion resistance. The testing of the hydrophilicity and corrosion resistance of MAO films requires electrochemical corrosion testing and immersion weight loss testing. Electrochemical corrosion testing is generally conducted using an electrochemical workstation, and the experimental process only requires following the experimental requirements step by step to obtain data in one measurement. Immersion weight loss testing typically involves immersing the sample in a high-temperature seawater environment for a period of time, then removing it, cleaning, drying, and weighing it to obtain the weight loss data before and after immersion.

[0003] During the immersion weight loss test, on the one hand, the sample weight decreases due to the corrosion effect of NaCl, which causes a small amount of the sample to dissolve into the corrosive solution; on the other hand, some corrosion products deposit on the sample surface, increasing the weight of the MAO film. Weighing the immersed sample using traditional rinsing and drying methods results in significant experimental errors. Furthermore, to obtain more experimental data from the immersion weight loss test, the sample needs to be removed, cleaned, dried, and weighed at fixed intervals (e.g., 12h, 24h). This entire process requires manual operation, making the immersion weight loss test process complex and cumbersome. Moreover, manual operation is prone to human or random errors, leading to inaccurate experimental data and severely affecting the subsequent judgment of the hydrophilicity and corrosion resistance properties of the MAO film under high-temperature seawater. Therefore, to address the shortcomings of existing manual immersion weight loss tests on MAO film samples, this application proposes a high-temperature seawater MAO film hydrophilicity and corrosion resistance testing device that effectively solves the above-mentioned technical problems. Summary of the Invention

[0004] The present invention aims to provide a testing device for the hydrophilicity and corrosion resistance of MAO membranes under high temperature seawater, in order to eliminate the shortcomings of existing artificial immersion weight loss tests on MAO membrane samples.

[0005] This invention is achieved through the following technical solution:

[0006] A high-temperature seawater test device for testing the hydrophilicity and corrosion resistance of MAO membranes includes two parallel tracks and a control cabinet. A gantry frame is movable on the two tracks, and a walking drive component is installed on one of the tracks. An immersion corrosion test chamber, a sample drying chamber, and a sample cleaning chamber are arranged side by side between the two tracks.

[0007] The upper end of the gantry frame is equipped with a screw jack, and the lower end of the screw jack is connected to a lifting bar. The lifting bar has multiple through holes spaced apart on the left and right sides. A vertical rod is inserted through each through hole. The lower end of the vertical rod is connected to a sample clamp, and the upper end of the vertical rod is connected to an end block. An adsorption block is provided on the upper surface of the end block. A force sensor is provided on the lower surface of the upper end of the gantry frame, which is aligned vertically with each adsorption block. A permanent magnet is connected to the force sensor through a connecting rod.

[0008] The immersion corrosion test chamber is divided into test areas by partitions, which are aligned vertically with each vertical bar. Each test area is equipped with a temperature control component.

[0009] The sample drying oven is rotatably connected to both sides of the upper end of the sample drying oven. The sample drying oven is equipped with a drive assembly to realize the closing and opening of the two covers. The two covers are provided with semi-circular holes for passing through vertical rods on their close sides. The sample drying oven is connected to a hot air delivery device.

[0010] The sample cleaning box is equipped with multiple ultrasonic transducers on its bottom wall, and a drain pipe is connected to the lower end of the side wall of the sample cleaning box.

[0011] As a further provision of the above scheme, the lower ends of both sides of the gantry are connected to bases that match the track. The walking drive assembly includes bearing seats set at the front and rear ends of the track. A transmission screw is set between the two bearing seats, and a screw motor is connected to the end of the transmission screw. A screw nut block that is threadedly connected to the transmission screw is fixedly set on the base.

[0012] As a further feature of the above scheme, vertical sliding grooves are provided at the upper ends of both sides of the gantry frame, and sliders matching the vertical sliding grooves are connected to both ends of the lifting bar.

[0013] As a further feature of the above scheme, a first gear is provided on the vertical rod located below the lifting bar, and multiple balls are evenly embedded in the lower surface of the end block. The lower surface of the lifting bar is provided with a transmission groove aligned vertically with each first gear. The lower end of the gantry is connected to a horizontally arranged slide rail, and a rack that interacts with the first gear is slidably arranged on the horizontal slide rail. One end of the horizontal slide rail is provided with a telescopic pusher connected to the rack.

[0014] As a further feature of the above scheme, the temperature control component includes a temperature sensor and a resistance heating rod disposed in each test zone.

[0015] As a further feature of the above scheme, the temperature control component also includes a thermal oil heater installed at the front of the immersion corrosion test chamber and heat exchange tubes installed in each test zone. The heat exchange tubes in the multiple test zones are connected end to end in sequence, and the heat exchange length of the multiple heat exchange tubes gradually decreases from left to right. The thermal oil heater is connected to both ends of the heat exchange tubes after they are connected end to end through a delivery pump and an oil delivery pipe.

[0016] As a further feature of the above scheme, the oil pipeline located outside the immersion corrosion test chamber is covered with a heat insulation layer.

[0017] As a further provision of the above scheme, the hot air delivery device includes a hot air blower, a hot air duct is connected to the hot air blower, the end of the hot air duct is arranged parallel to the rear side of the sample drying box, and multiple sets of air outlet pipes extending into the sample drying box are arranged at intervals on the hot air duct. The sample drying box is also provided with an exhaust pipe.

[0018] As a further provision of the above scheme, the driving component includes a U-shaped strip disposed on the end face of the sample drying chamber, and toothed surfaces are provided on both sides of the U-shaped strip. A telescopic driving component is connected to the lower end of the U-shaped strip. The cover plate is rotatably connected to the upper end of the sample drying chamber through a pin, and a second gear that meshes with the toothed surfaces on the U-shaped strip is provided at the outer end of the pin.

[0019] As a further feature of the above scheme, the outer surface of the control cabinet is provided with a display screen and a control panel, and the interior of the control cabinet is provided with a control module, a data processing module and a storage module.

[0020] When using the high-temperature seawater MAO membrane hydrophilicity and corrosion resistance testing equipment disclosed in this invention, four 10cm×10cm MAO membrane coating samples are taken and ultrasonically cleaned in anhydrous ethanol and deionized water for 20 minutes in sequence, and then fixed and clamped with four sample clamps.

[0021] Meanwhile, a 3.5% NaCl aqueous solution was prepared as the corrosive medium and placed into the test areas of the immersion corrosion test chamber. The temperatures of the four test areas were then controlled sequentially at 80±2℃, 65±2℃, 50±2℃, and 40±2℃ using the temperature control component.

[0022] Subsequently, the operators input the control program into the control cabinet. Every 24 hours, the samples were removed from the test area and sent to a sample cleaning box for ultrasonic cleaning for 10 minutes, followed by hot air drying in a sample drying oven for 30 minutes. After hot air drying, each sample and its connecting parts were weighed, and then returned to the test area to continue the experiment. After 20 consecutive days of experimentation, the experimental data recorded in the control cabinet were retrieved to obtain the corrosion weight loss data for each sample.

[0023] Beneficial effects:

[0024] 1) The testing equipment disclosed in this invention realizes the automatic corrosion resistance test, sample cleaning, sample drying and weighing recording of MAO film coating samples under different high temperature seawater. It has a high degree of automation and integration, and realizes long-term unmanned automatic operation, effectively avoiding human error or accidental error in manual operation, and ensuring the accuracy of the obtained experimental data.

[0025] 2) The immersion corrosion test chamber of this invention not only provides multiple corrosion resistance test zones with different stable environments, but also, through the design of internal heat exchange tubes, resistance heating rods, and temperature sensors, heats the seawater in each test zone using heat transfer oil flowing through the heat exchange tubes as the main heating medium, and uses resistance heating rods as auxiliary heating to regulate the temperature, thereby effectively controlling the seawater temperature in each test zone to the required temperature. At the same time, because the heat exchange length of multiple heat exchange tubes gradually decreases from left to right, it ensures that the temperature of the seawater in multiple test zones decreases sequentially from left to right, and also optimizes the heat exchange of the heat transfer oil, avoiding heat waste and loss.

[0026] 3) The present invention further improves the design of the sample clamping mechanism. Through the structural design of gears, racks, telescopic drive components, etc., when the sample is ultrasonically cleaned and inserted into the sample drying oven for hot air drying, the sample can rotate 180°, which can ensure that the sample surface is dried evenly and all moisture can be removed. This effectively avoids the error in subsequent weight loss data due to incomplete drying.

[0027] 4) This invention utilizes a screw jack to lift the lifting bar and the sample. When the lifting bar reaches the top of the gantry, the sample and its connecting parts can be connected to the force sensor for individual weighing through magnetic adsorption. This enables online direct measurement and weighing of the sample without removing it from the sample holder, making the entire measurement process fast, convenient, and highly accurate. Its novel structural design and precise measurement of sample corrosion weight loss are also noteworthy. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a frontal perspective view of the present invention;

[0030] Figure 2 This is a three-dimensional structural diagram of the back of the present invention;

[0031] Figure 3 This is a three-dimensional structural diagram of the track, gantry, lifting bars, etc. in this invention;

[0032] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A;

[0033] Figure 5 This is a three-dimensional structural diagram of the screw jack, lifting bar, sample clamp, etc. in this invention;

[0034] Figure 6 This is a frontal three-dimensional structural diagram of the immersion corrosion test chamber and temperature control component in this invention;

[0035] Figure 7 This is a three-dimensional structural diagram of the back of the immersion corrosion test chamber and temperature control component in this invention;

[0036] Figure 8 This is a three-dimensional structural diagram of the sample drying oven in the first state of the present invention;

[0037] Figure 9 This is a three-dimensional structural diagram of the sample drying oven in the second state of the present invention;

[0038] Figure 10 This is a three-dimensional structural diagram of the sample cleaning box in this invention.

[0039] in:

[0040] 1- Track, 2- Control cabinet;

[0041] 3-Gantry frame, 301-Screw jack, 302-Lifting bar, 304-Sample clamp, 305-End block, 306-Adsorption block, 307-Force sensor, 308-Permanent magnet, 309-Base, 310-Bearing seat, 311-Transmission screw, 312-Screw motor, 313-Screw nut block, 314-Vertical slide groove, 315-First gear, 316-Horizontal slide rail, 317-Rack, 318-Telescopic pusher;

[0042] 4-Immersion corrosion test chamber, 401-Baffle, 402-Test area, 403-Temperature sensor, 404-Heat transfer oil heater, 405-Heat exchange tube, 406-Transfer pump, 407-Oil pipe, 408-Resistance heating rod;

[0043] 5-Sample drying oven, 501-Lid plate, 502-Semicircular hole, 503-Exhaust pipe, 504-U-shaped strip, 505-Telescopic drive component, 506-Second gear;

[0044] 6-Sample cleaning box, 601-Ultrasonic transducer, 602-Drain pipe;

[0045] 7-Hot air blower, 701-Hot air duct, 702-Outlet duct. Detailed Implementation

[0046] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-10 This application will be described in detail with reference to the embodiments.

[0048] Example 1

[0049] Example 1 discloses a testing device for the hydrophilicity and corrosion resistance of MAO membranes under high-temperature seawater, as shown in the attached figure. Figure 1 and attached Figure 2 The main body of the testing equipment includes two parallel tracks 1 and a control cabinet 2. An immersion corrosion test chamber 4, a sample drying chamber 5, and a sample cleaning chamber 6 are arranged side-by-side between the two tracks 1. The outer surface of the control cabinet 2 is equipped with a display screen and a control panel. Inside the control cabinet 2 are a control module, a data processing module, and a storage module. The control cabinet 2 enables automatic control of the entire testing equipment and also processes and stores data transmitted from the sensors for subsequent retrieval by operators.

[0050] Reference Appendix Figure 3 and attached Figure 4A gantry frame 3 is mounted on two tracks 1, and a driving assembly is mounted on one of the tracks 1. In the specific design, bases 309 matching the tracks 1 are connected to the lower ends of both sides of the gantry frame 3. The driving assembly includes bearing seats 310 at the front and rear ends of the tracks 1, with a transmission screw 311 between the two bearing seats 310. A screw motor 312 is connected to one end of the transmission screw 311. A screw nut block 313, threadedly connected to the transmission screw 311, is fixed to the base 309. The screw motor 312 rotates forward and backward under control commands from the control cabinet 2, and the entire gantry frame 3 moves along the two tracks 1 through the action of the transmission screw 311 and the screw nut block 313.

[0051] Reference Appendix Figure 3 and attached Figure 5 A screw jack 301 is provided at the upper end of the gantry frame 3, and a lifting bar 302 is connected to the lower end of the screw jack 301. In order to ensure the stable lifting of the lifting bar 302, vertical sliding grooves 314 are provided at the upper ends of both the left and right sides of the gantry frame 3 in this embodiment. Then, sliders matching the vertical sliding grooves 314 are connected to both ends of the lifting bar 302.

[0052] Multiple through holes are spaced apart on the lifting bar 302, and a vertical rod 303 is inserted through each through hole. A sample clamp 304 is connected to the lower end of the vertical rod 303 to hold and fix the sample 304 to be tested. An end block 305 is connected to the upper end of the vertical rod 303 to limit and prevent the vertical rod 303 from slipping out of the through hole. At the same time, an adsorption block 306 is provided on the upper surface of the end block 305, and a force sensor 307 is provided on the lower surface of the upper end of the gantry frame 3, aligned vertically with each adsorption block 306. A permanent magnet 308 is connected to the force sensor 307 through a connecting rod. The force sensor 307 is electrically connected to the control cabinet 2 via a wire. When the adsorption block 306 is adsorbed and connected to the permanent magnet 308, the force sensor 307 can measure the total weight of the sample, vertical rod 303, sample clamp 304, end block 305 and adsorption block 306. Then, after testing for a period of time, the overall measurement is performed again, and the corrosion weight loss value of the sample is obtained by the weight difference between the two measurements.

[0053] Reference Appendix Figure 6 and attached Figure 7The immersion corrosion test chamber 4 is divided into test zones 402 by partitions 401, each aligned vertically with a vertical rod 303. Four test zones 402 are shown in this diagram, and each zone 402 is equipped with a temperature control component. Specifically, the temperature control component includes a temperature sensor 403 and a resistance heating rod 408, both electrically connected to the control cabinet 2. The control cabinet 2 controls the heating power of each resistance heating rod 408, while the temperature sensor 403 measures the seawater temperature in the test zone 402, thus achieving dynamic control and adjustment of the seawater temperature during the immersion corrosion experiment.

[0054] Reference Appendix Figure 2 Appendix Figure 8 and attached Figure 9 To prevent heat loss during sample drying, cover plates 501 are rotatably connected to both sides of the upper end of the sample drying chamber 5. A drive assembly for closing and opening the two cover plates 501 is also provided on the sample drying chamber 5. Semi-circular holes 502 for passing through vertical rods 303 are provided on the sides of the two cover plates 501 that are close to each other, and a hot air supply device is connected to the sample drying chamber 5. The hot air supply device includes a hot air blower 7, with a hot air duct 701 connected to it. The end of the hot air duct 701 is parallel to the rear side of the sample drying chamber 5, and multiple sets of air outlet pipes 702 extending into the sample drying chamber 5 are spaced apart on the hot air duct 701. An exhaust pipe 503 is also provided on the sample drying chamber 5.

[0055] The drive assembly includes a U-shaped bar 504 disposed on the end face of the sample drying chamber 5, with toothed surfaces on both sides of the U-shaped bar 504. A telescopic drive component 505 is then connected to the lower end of the U-shaped bar 504. The cover plate 501 is rotatably connected to the upper end of the sample drying chamber 5 via a pin, and a second gear 506 is disposed at the outer end of the pin, meshing with the toothed surfaces of the U-shaped bar 504. The extension or retraction of the telescopic drive component 505 enables the raising and lowering of the U-shaped bar 504. During the raising and lowering of the U-shaped bar 504, the meshing of the two side gears with the second gear 506 enables the two cover plates 501 to close and open.

[0056] Final reference appendix Figure 10 Multiple ultrasonic transducers 601 are installed on the bottom wall of the sample cleaning tank 6, and a drain pipe 602 is connected to the lower end of the side wall of the sample cleaning tank 6. When the sample is inserted into the cleaning liquid in the sample cleaning tank 6, the ultrasonic transducers 601 can be activated to quickly clean the surface of the sample.

[0057] Example 2

[0058] Example 2 discloses a high-temperature seawater underwater MAO membrane hydrophilicity and corrosion resistance testing device optimized based on the technical solution in Example 1. The similarities between it and Example 1 will not be described again.

[0059] Reference Appendix Figure 6 and attached Figure 7 In this embodiment 2, the temperature control component also includes a thermal oil heater 404 installed at the front of the immersion corrosion test chamber 4. Additionally, a heat exchange tube 405 is installed in each test zone 402, and the heat exchange tubes 405 in multiple test zones 402 are connected end-to-end sequentially, allowing the thermal oil to heat the seawater in each test zone 402 sequentially. Furthermore, since the seawater temperature in multiple test zones 402 needs to decrease in stages during the test experiment, the heat exchange length of the multiple heat exchange tubes 405 is gradually reduced from left to right. Finally, the thermal oil heater 404 is connected to both ends of the connected heat exchange tubes 405 via a delivery pump 406 and an oil delivery pipe 407.

[0060] In addition, to prevent heat loss during the circulation of heat transfer oil outside the immersion corrosion test chamber 4, an insulation layer (not shown in the figure) is also wrapped around the oil pipeline located outside the immersion corrosion test chamber 4.

[0061] In this embodiment 2, the temperature control component is designed to use the heat transfer oil flowing through the heat exchange tube 405 as the main heating medium to heat the seawater in each test zone 402, and the resistance heating rod 408 as an auxiliary heating element to regulate the temperature. This ensures that the seawater temperature in each test zone 402 can be effectively controlled at the required temperature. At the same time, since the heat exchange length of the multiple heat exchange tubes 405 gradually decreases from left to right, it ensures that the temperature of the seawater in the multiple test zones 402 decreases sequentially from left to right, and also optimizes the heat exchange of the heat transfer oil, avoiding heat waste and loss.

[0062] Example 3

[0063] Example 3 discloses a high-temperature seawater underwater MAO membrane hydrophilicity and corrosion resistance testing device that is an improved design based on Example 1 or Example 2. The similarities between it and Example 1 or Example 2 will not be described again.

[0064] Reference Appendix Figure 3 and attached Figure 5 A first gear 315 is provided on the vertical rod 303 located below the lifting bar 302. At the same time, multiple balls are evenly embedded in the lower surface of the end block 305. When the end block 305 abuts against the upper surface of the lifting bar 302 due to gravity, the balls will directly contact the upper surface of the lifting bar 302, thereby reducing frictional resistance during the subsequent rotation of the vertical rod 303.

[0065] A transmission groove aligned vertically with each first gear 315 is provided on the lower surface of the lifting bar 302. A horizontally arranged horizontal slide rail 316 is also connected to the lower end of the gantry frame 3. A rack 317 that interacts with the first gear 315 is slidably arranged on the horizontal slide rail 316. A telescopic pusher 318 connected to the rack 317 is provided at one end of the horizontal slide rail 316.

[0066] Through the above structural design, in this embodiment 3, when the sample is immersed in seawater or located in the sample drying box 5, the rack 317 is moved by the action of the telescopic pusher 318. Then, under the meshing transmission of the rack 317 and the first gear 315, the sample held below is rotated 180°, switching different wind conditions of the workpiece, so that the workpiece can be dried quickly under the action of hot air, avoiding the impact on the accuracy of the measured data due to incomplete drying of the cleaning solution.

[0067] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for testing the hydrophilicity and corrosion resistance of MAO membranes under high-temperature seawater, characterized in that, It includes two parallel tracks (1) and a control cabinet (2). A gantry frame (3) is movable on the two tracks (1), and a walking drive assembly is provided on one of the tracks (1). An immersion corrosion test chamber (4), a sample drying oven (5) and a sample cleaning box (6) are arranged side by side between the two tracks (1). The upper end of the gantry frame (3) is provided with a screw jack (301), the lower end of the screw jack (301) is connected to a lifting bar (302), the lifting bar (302) is provided with multiple through holes spaced apart on the left and right, and a vertical rod (303) is provided through each through hole. The lower end of the vertical rod (303) is connected to a sample clamp (304), the upper end of the vertical rod (303) is connected to an end block (305), the upper surface of the end block (305) is provided with an adsorption block (306), the lower surface of the upper end of the gantry frame (3) is provided with a force sensor (307) aligned vertically with each adsorption block (306), and a permanent magnet (308) is connected to the force sensor (307) through a connecting rod. The immersion corrosion test chamber (4) is divided into test areas (402) aligned vertically with each vertical rod (303) by a partition (401), and each test area (402) is equipped with a temperature control component; The sample drying oven (5) is rotatably connected to both sides of the upper end of the sample drying oven (5). The sample drying oven (5) is provided with a drive assembly to realize the closing and opening of the two cover plates (501). The two cover plates (501) are provided with semi-circular holes (502) for passing through the vertical rod (303) on their close sides. The sample drying oven (5) is connected to a hot air delivery device. The bottom wall of the sample cleaning box (6) is provided with multiple ultrasonic transducers (601), and the lower end of the side wall of the sample cleaning box (6) is connected to a drain pipe (602).

2. The high-temperature seawater underwater hydrophilicity and corrosion resistance testing equipment for MAO membranes according to claim 1, characterized in that, The lower ends of both sides of the gantry (3) are connected to bases (309) that match the track (1). The walking drive assembly includes bearing seats (310) set at the front and rear ends of the track (1). A transmission screw (311) is set between the two bearing seats (310), and a screw motor (312) is connected to the end of the transmission screw (311). A screw nut block (313) that is threadedly connected to the transmission screw (311) is fixedly set on the base (309).

3. The high-temperature seawater underwater hydrophilicity and corrosion resistance testing equipment for MAO membranes according to claim 1, characterized in that, The upper ends of the left and right sides of the gantry frame (3) are provided with vertical sliding grooves (314), and the left and right ends of the lifting bar (302) are connected with sliders that match the vertical sliding grooves (314).

4. The high-temperature seawater underwater hydrophilicity and corrosion resistance testing equipment for MAO membranes according to claim 1, characterized in that, A first gear (315) is provided on the vertical rod (303) located below the lifting bar (302). A plurality of balls are uniformly embedded in the lower surface of the end block (305). A transmission groove aligned vertically with each first gear (315) is opened on the lower surface of the lifting bar (302). A horizontally arranged horizontal slide rail (316) is connected to the lower end of the gantry frame (3). A rack (317) that interacts with the first gear (315) is slidably arranged on the horizontal slide rail (316). A telescopic pusher (318) connected to the rack (317) is provided at one end of the horizontal slide rail (316).

5. The high-temperature seawater underwater hydrophilicity and corrosion resistance testing equipment for MAO membranes according to claim 1, characterized in that, The temperature control assembly includes a temperature sensor (403) and a resistance heating rod (408) disposed in each test zone (402).

6. The high-temperature seawater underwater hydrophilicity and corrosion resistance testing equipment for MAO membranes according to claim 5, characterized in that, The temperature control component also includes a thermal oil heater (404) installed on the front side of the immersion corrosion test chamber (4) and a heat exchange tube (405) installed in each test zone (402). The heat exchange tubes (405) in the multiple test zones (402) are connected end to end in sequence, and the heat exchange length of the multiple heat exchange tubes (405) gradually decreases from left to right. The thermal oil heater (404) is connected to both ends of the heat exchange tubes (405) after they are connected end to end through a delivery pump (406) and an oil delivery pipe (407).

7. The high-temperature seawater underwater hydrophilicity and corrosion resistance testing equipment for MAO membranes according to claim 1, characterized in that, The oil pipeline located outside the immersion corrosion test chamber (4) is covered with a heat insulation layer.

8. The high-temperature seawater underwater hydrophilicity and corrosion resistance testing equipment for MAO membranes according to claim 1, characterized in that, The hot air delivery device includes a hot air blower (7), and a hot air duct (701) is connected to the upper part of the hot air blower (7). The end of the hot air duct (701) is arranged parallel to the rear side of the sample drying box (5), and multiple sets of air outlet pipes (702) extending into the sample drying box (5) are arranged at intervals on the hot air duct (701). The sample drying box (5) is also provided with an exhaust pipe (503).

9. The testing equipment for the hydrophilicity and corrosion resistance of MAO membranes under high-temperature seawater as described in claim 1, characterized in that, The drive assembly includes a U-shaped strip (504) disposed on the end face of the sample drying chamber (5), and toothed surfaces are provided on both sides of the U-shaped strip (504). A telescopic drive component (505) is connected to the lower end of the U-shaped strip (504). The cover plate (501) is rotatably connected to the upper end of the sample drying chamber (5) through a pin, and a second gear (506) is provided at the outer end of the pin to mesh with the toothed surfaces on the U-shaped strip (504).

10. The high-temperature seawater underwater MAO membrane hydrophilicity and corrosion resistance testing equipment according to claim 1, characterized in that, The outer surface of the control cabinet (2) is provided with a display screen and a control panel, and the interior of the control cabinet (2) is provided with a control module, a data processing module and a storage module.

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