Protective coating material high temperature and high humidity performance test box and test method

Abstract

The present application relates to the field of material testing equipment, in particular to a protective coating material high temperature and high humidity performance measuring instrument and a measuring method, comprising an instrument body and a test platform arranged in the instrument body; a detection bin is vertically arranged on the upper part of the test platform, a temperature sensor and a humidity sensor are arranged in the detection bin, a receiving fabric is arranged on the upper part of the detection bin, the upper surface of the receiving fabric is coated with a protective coating material, a water vapor generating unit capable of generating high temperature steam is further arranged in the instrument body, when the receiving fabric is arranged on the detection bin, a detection cavity is formed in the detection bin, and the temperature sensor and the humidity sensor detect the temperature and humidity in the detection cavity respectively. Compared with the use of electronic components coated with protective coating materials for detection, the test cost is lower, and the sealing of the connection between the electronic components and the wires does not need to be considered, thereby improving the accuracy of the test results.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of material testing equipment, in particular to a protective coating material high temperature and high humidity performance test box and a test method. BACKGROUND

[0002] The application field of protective coating is wide, among which the surface of many electronic components will be coated with protective coating. During testing, the electronic components need to be clamped and fixed. The clamping device of the inner wall of the existing high temperature and high humidity performance test box is generally installed in a fixed length specification, which cannot be adjusted according to the length of electronic components of different specifications, so that the originally installed clamping device needs to be disassembled and replaced during use, or a clamping high temperature and high humidity performance test box of other appropriate specifications is used, which reduces the application range of the high temperature and high humidity performance test box and reduces its use effect and practical performance.

[0003] Chinese patent No. CN217688471U discloses a performance test box for protective coating material in high temperature and high humidity environment, which comprises a test box, a box door is rotatably connected to one side of the surface of the test box, and a limiting plate is fixedly connected to the lower side of the test box on both sides; and a limiting opening is formed in the center of the upper surface of the two limiting plates, a double-direction screw rod is rotatably connected to the lower side of the test box on both sides, a worm gear is fixedly connected to the center of the double-direction screw rod, a worm is rotatably connected to the lower side of the rear inside of the test box, and the lower surface of the worm gear is meshingly connected with the upper surface of the worm; and an adjusting block is threadedly connected to the both sides of the rod arm of the double-direction screw rod, the upper surface of the two adjusting blocks extends above the limiting plate through the corresponding limiting opening, a bottom clamping plate is fixedly connected to the upper surface of the two adjusting blocks, and a clamping mechanism is arranged above the two bottom clamping plates.

[0004] The above scheme improves the clamping mechanism in the existing test box, so that the clamping mechanism can adapt to electronic components of different sizes. However, testing the protective coating directly coated on the electronic components has limitations, because the protective coating is also applied to other fields, and in most cases, the performance of the protective coating has no direct correlation with the object coated with it. If the protective coating is coated on the object and then tested, the test time will be longer, and the coated object such as electronic components will be damaged, and the test cost will be higher. SUMMARY

[0005] In order to solve the above problems, the protective coating material high-temperature and high-humidity performance test box and test method are provided, a test platform is arranged in the box, a detection bin is arranged on the upper part of the test platform, a temperature sensor and a humidity sensor are arranged in the detection bin, during detection, the protective coating material is coated on the upper part of the receiving fabric, then the receiving fabric is arranged on the test platform, so that the receiving fabric seals the upper part of the detection bin and forms a detection cavity, then the box is sealed and the water vapor generating unit is started, the water vapor generating unit injects water vapor into the box and makes the inside of the box in a high-temperature and high-humidity environment, if the temperature value detected by the temperature sensor only slowly rises and the humidity value detected by the humidity sensor does not change obviously within the rated test time, it indicates that the performance of the protective coating material meets the standard, otherwise, if the detected temperature value and humidity value sharply rise, it indicates that the performance of the protective coating material does not meet the standard.

[0006] In order to solve the problems in the prior art, the present application provides a protective coating material high-temperature and high-humidity performance test box, which comprises a box body and a test platform arranged in the box body; a detection bin is vertically arranged on the upper part of the test platform, a temperature sensor and a humidity sensor are arranged in the detection bin, a receiving fabric is arranged on the upper part of the detection bin, the upper surface of the receiving fabric is coated with a protective coating material, a water vapor generating unit capable of generating high-temperature steam is further arranged in the box, and when the receiving fabric is arranged on the detection bin, a detection cavity is formed in the detection bin, and the temperature sensor and the humidity sensor detect the temperature and humidity in the detection cavity, respectively.

[0007] Preferably, the receiving fabric has air permeability.

[0008] Preferably, a clamping unit matched with the detection bin is arranged on the upper part of the detection bin, the clamping unit comprises a first clamping frame and a second clamping frame, the second clamping frame has magnetism and attracts the first clamping frame, and the receiving fabric is arranged between the first clamping frame and the second clamping frame and clamped by the two.

[0009] Preferably, the lower part of the first clamping frame is a recessed structure, the upper part of the second clamping frame is a protruding structure, and when the receiving fabric is clamped, the first clamping frame is matched and clamped with the second clamping frame through the receiving fabric.

[0010] Preferably, a pressing unit is arranged above the detection bin, the pressing unit comprises a pressing ring moving in the vertical direction, when the pressing ring descends and presses the first clamping frame to the lowest position, the first clamping frame is sleeved on the periphery of the detection bin.

[0011] Preferably, a drainage groove is horizontally arranged on the upper part of the first clamping frame, and when the pressing ring descends to the lowest position, the bottom end surface of the drainage groove is coplanar with the upper end surface of the receiving fabric located directly above the detection bin.

[0012] Preferably, a receiving unit for supporting the second clamping frame is arranged around the detection bin, and the receiving unit comprises a receiving ring capable of moving in the vertical direction and supporting the second clamping frame, and a spring is arranged at the lower part of the receiving ring to provide a supporting force for the receiving ring.

[0013] Preferably, a bellows is arranged vertically between the receiving ring and the upper end surface of the test platform, and the two ends of the bellows are fixedly connected with the receiving ring and the test platform respectively, and an air pump is arranged at the lower end of the bellows and is in communication with the bellows.

[0014] Preferably, a collection cavity for collecting the cooled water vapor is arranged horizontally below the test platform, and a heating cavity in communication with the collection cavity is arranged, the upper part of the heating cavity is provided with a steam cavity for storing steam, a fan is arranged directly above the detection bin, and a gas guide pipe is arranged between the fan and the steam cavity to communicate the two.

[0015] The application also relates to a method for testing the high-temperature and high-humidity performance of a protective coating material, and the method uses a protective coating material high-temperature and high-humidity performance test box, and the specific steps are as follows:

[0016] S1, the protective coating material is coated on the upper surface of the receiving fabric, and the receiving fabric is placed on the detection bin so that the receiving fabric shields the upper part of the detection bin, and the detection bin forms a detection cavity after being shielded;

[0017] S2, the box is sealed, the water vapor generating unit is started and high-temperature water vapor is injected into the box, so that a high-temperature and high-humidity environment is formed in the box, and a rated test time is preset;

[0018] S3, during the rated test time, the temperature sensor and the humidity sensor detect the temperature and the humidity in the detection cavity respectively, if the detected temperature value and humidity value do not change, it indicates that the performance of the protective coating material is good, and if the detected temperature value and humidity value rise, it indicates that the performance of the protective coating material does not meet the standard.

[0019] The application has the following beneficial effects compared with the prior art:

[0020] 1. The high temperature and high humidity performance test box for protective coating material has the advantages that the test platform is arranged in the box body, the detection bin is arranged on the upper portion of the test platform, the temperature sensor and the humidity sensor are arranged in the detection bin, the protective coating material is coated on the upper portion of the receiving fabric during detection, the receiving fabric is arranged on the test platform, the upper portion of the detection bin is sealed by the receiving fabric to form a detection cavity, the box body is sealed, the water vapor generating unit is started, the water vapor generating unit injects water vapor into the box body, the inside of the box body is in a high temperature and high humidity environment, if the temperature value detected by the temperature sensor only slowly rises and the humidity value detected by the humidity sensor does not obviously change within the rated test time, it is indicated that the performance of the protective coating material meets the standard, otherwise, if the temperature value and the humidity value detected by the protective coating material rapidly rise, it is indicated that the performance of the protective coating material does not meet the standard, compared with the detection of the electronic element coated with the protective coating material, the test cost is low, and the sealing property of the electronic element and the wire connection is not considered, and the accuracy of the test result is improved.

[0021] 2. The clamping unit is arranged, the receiving fabric is clamped by the clamping unit and then placed on the detection bin, the receiving fabric is prevented from slipping during the test process, the lower portion of the first clamping frame is arranged as a recess structure, and the upper portion of the second clamping frame is arranged as a convex structure, the first clamping frame and the second clamping frame are prevented from relatively sliding in the horizontal direction after clamping the receiving fabric, and the stability of the first clamping frame and the second clamping frame when clamping the receiving fabric is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a perspective view of the high temperature and high humidity performance test box for protective coating material.

[0023] Figure 2 is a perspective view of the high temperature and high humidity performance test box for protective coating material.

[0024] Figure 3 is a side view of the high temperature and high humidity performance test box for protective coating material.

[0025] Figure 4 is a perspective view of the high temperature and high humidity performance test box for protective coating material. Figure 3 is a sectional view of the high temperature and high humidity performance test box for protective coating material.

[0026] Figure 5 is a sectional view of the high temperature and high humidity performance test box for protective coating material.

[0027] Figure 6 is a sectional view of the high temperature and high humidity performance test box for protective coating material. Figure 5 is a local enlarged view of the high temperature and high humidity performance test box for protective coating material.

[0028] Figure 7is the protective coating material high temperature and high humidity performance test box of the present application Figure 5 is a local enlarged view of the middle C.

[0029] Figure 8 is a three-dimensional schematic view of the protective coating material high temperature and high humidity performance test box of the present application after removing the box body Figure 1 .

[0030] Figure 9 is a three-dimensional schematic view of the protective coating material high temperature and high humidity performance test box of the present application after removing the box body Figure 2 .

[0031] Figure 10 is a cutaway three-dimensional schematic view of the protective coating material high temperature and high humidity performance test box of the present application after removing the box body.

[0032] Figure 11 is the protective coating material high temperature and high humidity performance test box of the present application Figure 10 is a local enlarged view of the middle D.

[0033] The figure mark is:

[0034] 1, box body; 2, test platform; 21, detection chamber; 22, temperature sensor; 23, humidity sensor; 3, water vapor generating unit; 31, collection cavity; 32, heating cavity; 321, steam cavity; 33, air guide pipe; 34, fan; 35, air hole; 4, receiving fabric; 5, clamping unit; 51, first clamping frame; 511, drainage groove; 52, second clamping frame; 6, pressing unit; 61, pressing ring; 62, lead screw; 63, rotary driver; 7, receiving unit; 71, receiving ring; 72, spring; 73, bellows; 74, air pump. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means and specific purposes and functions achieved by the present application, the present application will be described in further detail below with reference to the drawings and specific embodiments.

[0036] Reference Figures 1-5 and Figure 8 : protective coating material high temperature and high humidity performance test box, including box body 1 and test platform 2 arranged in box body 1; vertically arranged detection chamber 21 is arranged on the upper part of test platform 2, temperature sensor 22 and humidity sensor 23 are arranged in detection chamber 21, receiving fabric 4 is arranged on the upper part of detection chamber 21, the upper surface of receiving fabric 4 is coated with protective coating material, water vapor generating unit 3 capable of generating high temperature steam is further arranged in box body 1, when receiving fabric 4 is arranged on detection chamber 21, detection chamber 21 forms a detection cavity, temperature sensor 22 and humidity sensor 23 detect the temperature and humidity in the detection cavity respectively.

[0037] The protective coating material has different protective characteristics according to the characteristics of the use environment, and the protective coating material used for testing in the present application has the characteristics of heat insulation and water erosion prevention, so the high temperature and high humidity performance of the protective coating material is the main test target when testing. In the existing protective coating material test process, the protective coating material is coated on the object actually needed to be applied, such as electronic components, etc. Taking electronic components as an example, the protective coating material is coated on the electronic components before testing, and then the electronic components are placed in the box 1 for testing. High temperature water vapor is introduced into the box 1 during testing to simulate a high temperature and high humidity environment. The above test method can simulate the surrounding environment of the electronic components coated with the protective coating material during actual use. During the test process, the time of the electronic components in the box 1 is set as the rated time. When the performance of the protective coating material does not meet the standard, the electronic components will be damaged within the rated time, and then the performance of the protective coating material can be determined. However, the above test requires a long time, and the electronic components need to be connected during testing, which requires the setting of wires for connecting with the electronic components in the box 1, and the wires for connecting with the electronic components also need special treatment to work normally in a high temperature and high humidity environment. At the same time, since the wires need to be connected with the electronic components manually during testing, it is difficult to ensure the stability of the connection between the electronic components and the wires and the sealing performance of the connection between the electronic components and the wires. Otherwise, in a high temperature and high humidity environment, high temperature water vapor can enter the electronic components through the connection between the electronic components and the wires and cause damage to the electronic components. Therefore, whether the connection between the wires and the electronic components is stable has a great influence on the final determination of whether the performance of the protective coating material meets the standard. At the same time, the direct test using electronic components has a high test cost.

[0038] In order to avoid the above situation, the structure of the existing test box is redesigned, and the electronic components coated with the protective coating material are no longer used for direct testing, which reduces the test cost. The specific structure and working process of the test box are as follows:

[0039] The box body 1 is provided with a warehouse door. First, a protective coating material is coated on the upper surface of the receiving fabric 4. The receiving fabric 4 has air permeability. When the protective coating material cracks and breaks due to performance degradation in a high-temperature and high-humidity environment, the high-temperature water vapor in the box body 1 can pass through the receiving fabric 4, and the temperature sensor 22 and the humidity sensor 23 can monitor the changes in the detection cavity. Then, the receiving fabric 4 is covered on the upper part of the detection warehouse 21. After the receiving fabric 4 covers the detection warehouse 21, a detection cavity is formed in the detection warehouse 21. At this time, the temperature sensor 22 and the humidity sensor 23 correspondingly detect constant temperature and humidity values. After determining that the receiving fabric 4 is covered on the upper part of the detection warehouse 21, the warehouse door is closed to seal the box body 1. Then, the water vapor generating unit 3 is started. The water vapor generating unit 3 injects high-temperature water vapor into the box body 1. At this time, the temperature around the receiving fabric 4 rises, and the humidity also starts to rise. Since the protective coating material has heat insulation and waterproof characteristics, although the temperature and humidity inside the box body 1 continue to rise, the humidity in the detection cavity does not change, and the temperature only slowly rises. This is because the detection cavity is a closed cavity. Although the receiving fabric 4 coated with the protective coating material has heat insulation performance, it cannot completely prevent heat transfer. Therefore, the temperature value detected by the temperature sensor 22 will slowly and gradually rise. During testing, a predetermined test time is required. If the humidity value detected by the humidity sensor 23 is always constant, and the temperature value monitored by the temperature sensor 22 is always slowly rising at the predetermined test time, it means that the performance of the protective coating material is good. If the protective coating material breaks during testing, the high-temperature water vapor in the box body 1 will pass through the receiving fabric 4 and enter the detection cavity. At this time, the humidity and temperature in the detection cavity will sharply rise. The temperature sensor 22 and the humidity sensor 23 can monitor the changes in the temperature value and the humidity value, respectively, to determine whether the performance of the protective coating material is not up to standard.

[0040] A test platform 2 is installed inside the housing 1, with a test chamber 21 on top of the test platform 2. Temperature sensor 22 and humidity sensor 23 are installed inside the test chamber 21. During testing, a protective coating material is first applied to the upper part of the receiving fabric 4, which is then placed over the test platform 2, sealing the upper part of the test chamber 21 and forming a test cavity. The housing 1 is then sealed, and the steam generating unit 3 is activated, injecting steam into the housing 1 to create a high-temperature, high-humidity environment. Within the rated test time, if the temperature value detected by temperature sensor 22 only rises slowly, while the humidity value detected by humidity sensor 23 does not change significantly, the protective coating material meets the performance standards. Conversely, if the detected temperature and humidity values ​​rise sharply, the protective coating material does not meet the performance standards. Compared to testing electronic components coated with protective coating material, this method has lower testing costs and eliminates the need to consider the sealing of the connections between electronic components and wires, thus improving the accuracy of the test results.

[0041] Reference Figures 1-11 Fabric 4 is breathable.

[0042] When selecting the material for the receiving fabric 4, it is necessary to ensure that the material used to make the receiving fabric 4 is breathable. When the receiving fabric 4 coated with protective coating material is placed on the upper part of the detection chamber 21, if the protective coating material cracks or is damaged in a high temperature and high humidity environment, water vapor can pass through the receiving fabric 4, causing the temperature and humidity inside the detection chamber to rise.

[0043] Reference Figure 7 and Figure 8 A clamping unit 5 is provided on the upper part of the detection chamber 21 and engages with the detection chamber 21. The clamping unit 5 includes a first clamping frame 51 and a second clamping frame 52. The second clamping frame 52 is magnetic and attracts the first clamping frame 51. The receiving fabric 4 is disposed between the first clamping frame 51 and the second clamping frame 52 and is clamped by the two.

[0044] Before placing the receiving fabric 4 on the upper part of the testing chamber 21, the receiving fabric 4 is clamped by the first clamping frame 51 and the second clamping frame 52. The first clamping frame 51 and the second clamping frame 52 clamp the receiving fabric 4 by mutual magnetic attraction. Then, the clamping unit 5 holding the receiving fabric 4 is placed on the testing chamber 21. The second clamping frame 52 is sleeved on the outer periphery of the testing chamber 21. Compared with directly covering the testing chamber 21 with the receiving fabric 4, after the receiving fabric 4 is clamped by the clamping unit 5, the receiving fabric 4 is less likely to slip off during the test.

[0045] Reference Figures 1-11The lower part of the first clamping frame 51 is concave, and the upper part of the second clamping frame 52 is convex. When the fabric 4 is clamped, the first clamping frame 51 is clamped with the second clamping frame 52 through the fabric 4.

[0046] By setting the lower part of the first clamping frame 51 as concave and the upper part of the second clamping frame 52 as convex, the relative sliding of the first clamping frame 51 and the second clamping frame 52 in the horizontal direction after clamping the fabric 4 is avoided, and the stability of the first clamping frame 51 and the second clamping frame 52 when clamping the fabric 4 is ensured.

[0047] Referring to Figures 8-10 A pressing unit 6 is arranged above the detection chamber 21. The pressing unit 6 includes a pressing ring 61 moving in the vertical direction. When the first clamping frame 51 moves to the lowest position and is pressed by the descending pressing ring 61, the first clamping frame 51 is sleeved on the periphery of the detection chamber 21.

[0048] The pressing unit 6 includes a pressing ring 61 moving in the vertical direction. A lead screw 62 is arranged in the box body 1 and rotates vertically. The lead screw 62 penetrates the pressing ring 61 in the vertical direction and is threadedly connected with the pressing ring 61. When the lead screw 62 rotates, the pressing ring 61 moves in the vertical direction. After the first clamping frame 51 and the second clamping frame 52 clamp the fabric 4, the clamping unit 5 is placed above the detection chamber 21, so that the second clamping frame 52 is first clamped with the detection chamber 21, and then the pressing unit 6 is started. The lead screw 62 drives the pressing ring 61 to descend and press the first clamping frame 51, so that the first clamping frame 51 is sleeved on the periphery of the detection chamber 21 in the vertical direction. When the pressing ring 61 descends to the lowest position, the first clamping frame 51 sleeved on the periphery of the detection chamber 21 presses the fabric 4 tightly, avoiding that the high-temperature water vapor in the box body 1 enters the detection cavity through the gap between the fabric 4 and the detection chamber 21. A rotary driver 63 for driving the lead screw 62 to rotate is arranged on the upper part of the lead screw 62. The rotary driver 63 is preferably a servo motor.

[0049] Referring to Figure 7 A drainage groove 511 is horizontally arranged on the upper part of the first clamping frame 51. When the pressing ring 61 descends to the lowest position, the bottom end surface of the drainage groove 511 is coplanar with the upper end surface of the fabric 4 located directly above the detection chamber 21.

[0050] During the test, water vapor will gather above the fabric 4. If the drainage groove 511 is not arranged on the first clamping frame 51, the water vapor will gather on the upper part of the fabric 4, which will cause the protective coating to be soaked by the gathered water, and the water vapor cannot act on the protective coating material. After the drainage groove 511 is arranged, the drainage groove 511 can drain the gathered water in time, ensuring that the protective coating material can always be in a high-temperature environment during the test.

[0051] Referring to Figure 10 and Figure 11 : A receiving unit 7 is arranged around the detection chamber 21 to support the second clamping frame 52, the receiving unit 7 comprises a receiving ring 71 which is movable in the vertical direction and supports the second clamping frame 52, and a spring 72 is arranged at the lower part of the receiving ring 71 to provide a supporting force for the receiving ring 71.

[0052] After the clamping unit 5 clamps the receiving fabric 4, the clamping unit 5 is placed on the detection chamber 21, and the second clamping frame 52 is sleeved around the detection chamber 21, at this time the receiving ring 71 receives the second clamping frame 52, and the receiving ring 71 is provided with the spring 72 to provide an elastic force, when the pressing ring 61 presses the first clamping frame 51, the first clamping frame 51 pushes the second clamping frame 52 to descend, so that the spring 72 is gradually compressed, avoiding the second clamping frame 52 from falling during the descending process.

[0053] Referring to Figure 10 and Figure 11 : A bellows 73 is arranged vertically between the receiving ring 71 and the upper end face of the test platform 2, both ends of the bellows 73 are fixedly connected with the receiving ring 71 and the test platform 2 respectively, and a gas pump 74 is arranged at the lower end of the bellows 73 and is in communication with the inside of the bellows 73.

[0054] After the test is completed, because the second clamping frame 52 and the detection chamber 21 are clamped with the receiving fabric 4, the spring 72 cannot rely on its own elastic force to lift the second clamping frame 52 after the pressing ring 61 rises, at this time the gas pump 74 fills the bellows 73 with gas, the bellows 73 is elongated after being inflated, so that the bellows 73 lifts the receiving ring 71, and then the first clamping frame 51 and the second clamping frame 52 can smoothly separate from around the detection chamber 21.

[0055] Referring to Figure 4 , Figure 6 and Figures 8-10 : A collection cavity 31 for collecting the cooled water vapor and a heating cavity 32 which is in communication with the collection cavity 31 are arranged horizontally below the test platform 2, a steam cavity 321 for storing steam is arranged at the upper part of the heating cavity 32, a fan 34 is arranged directly above the detection chamber 21, and a gas guide pipe 33 is arranged between the fan 34 and the steam cavity 321 to communicate them.

[0056] The heating cavity 32 is provided with an electric heating wire, the electric heating wire heats the water in the heating cavity 32, the water after being heated and boiled becomes water vapor and rises to the steam cavity 321, the air hole 35 is arranged between the collecting cavity 31 and the heating cavity 32, during testing, the fan 34 and the electric heating wire are started at the same time, the fan 34 draws the steam in the steam cavity 321 and discharges into the box body 1, the air in the box body 1 enters the collecting cavity 31 and is discharged into the steam cavity 321 through the air hole 35, the water vapor flows in the vertical direction from top to bottom in the box body 1 under the action of the fan 34, and the cooled and condensed water vapor is collected and received by the collecting cavity 31.

[0057] With reference to Figures 1-11 The application also relates to a high-temperature and high-humidity performance test method for protective coating materials, and the method uses a high-temperature and high-humidity performance test box for protective coating materials, and the specific steps are as follows:

[0058] S1, the protective coating material is coated on the upper surface of the receiving fabric 4, and the receiving fabric 4 is placed on the detection bin 21, so that the receiving fabric 4 shields the upper part of the detection bin 21, and the detection bin 21 forms a detection cavity after being shielded;

[0059] S2, the box body 1 is sealed, the water vapor generating unit 3 is started and high-temperature water vapor is injected into the box body 1, so that a high-temperature and high-humidity environment is formed in the box body 1, and a preset rated test time is set;

[0060] S3, during the rated test time, the temperature sensor 22 and the humidity sensor 23 detect the temperature and humidity in the detection cavity respectively, if the detected temperature value and humidity value do not change, it indicates that the performance of the protective coating material is good, if the detected temperature value and humidity value rise, it indicates that the performance of the protective coating material does not meet the standard.

[0061] Working principle: first, the upper surface of the receiving fabric 4 is coated with a protective coating material, the receiving fabric 4 has air permeability, when the protective coating material cracks and breaks due to performance degradation in high temperature and high humidity environment, the high temperature water vapor in the box 1 can pass through the receiving fabric 4, and the temperature sensor 22 and the humidity sensor 23 can monitor the change in the detection cavity. Subsequently, the receiving fabric 4 is covered on the upper part of the detection bin 21, and the receiving fabric 4 covers the detection bin 21, and the detection cavity is formed in the detection bin 21, at this time, the temperature sensor 22 and the humidity sensor 23 correspond to the constant temperature and humidity values detected at this time, after determining that the receiving fabric 4 is covered on the upper part of the detection bin 21, the bin door is closed to seal the box 1, and then the water vapor generating unit 3 is started, the water vapor generating unit 3 injects high temperature water vapor into the box 1, at this time, the temperature around the receiving fabric 4 rises, and the humidity also starts to rise, because the protective coating material has the characteristics of heat insulation and waterproof, although the temperature and humidity inside the box 1 are rising, the humidity in the detection cavity will not change, and the temperature will only slowly rise, because the detection cavity is a closed cavity, although the receiving fabric 4 coated with the protective coating material has heat insulation performance, but it cannot completely prevent heat transfer, so the temperature value detected by the temperature sensor 22 will slowly and gradually rise, during the test, the rated test time needs to be preset, if the humidity value detected by the humidity sensor 23 is always in a constant state, and the temperature value monitored by the temperature sensor 22 is always in a slow rising state, it means that the performance of the protective coating material is good, if the protective coating material breaks during the test, the high temperature water vapor in the box 1 will pass through the receiving fabric 4 and enter the detection cavity, at this time, the humidity and temperature in the detection cavity will rise sharply, the temperature sensor 22 and the humidity sensor 23 can monitor the change of the temperature value and the humidity value respectively, so as to judge whether the performance of the protective coating material is not up to standard.

[0062] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the protection scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A high temperature and high humidity performance test chamber for protective coating materials, including a chamber body (1) and a test platform (2) set inside the chamber body (1). Its features are, A detection chamber (21) is vertically installed on the upper part of the test platform (2). A temperature sensor (22) and a humidity sensor (23) are installed inside the detection chamber (21). A receiving fabric (4) is installed on the upper part of the detection chamber (21). The upper surface of the receiving fabric (4) is coated with a protective coating material. A water vapor generating unit (3) that can generate high-temperature steam is also installed inside the box (1). When the receiving fabric (4) is installed on the detection chamber (21), a detection cavity is formed inside the detection chamber (21). The temperature sensor (22) and the humidity sensor (23) detect the temperature and humidity inside the detection cavity, respectively. The receiving fabric (4) is breathable.

2. The high-temperature and high-humidity performance testing chamber for protective coating materials according to claim 1, characterized in that, A clamping unit (5) is provided on the upper part of the detection chamber (21) and engages with the detection chamber (21). The clamping unit (5) includes a first clamping frame (51) and a second clamping frame (52). The second clamping frame (52) is magnetic and attracts the first clamping frame (51). The fabric (4) is placed between the first clamping frame (51) and the second clamping frame (52) and is clamped by the two.

3. The high-temperature and high-humidity performance testing chamber for protective coating materials according to claim 2, characterized in that, The lower part of the first clamping frame (51) is a recessed structure, and the upper part of the second clamping frame (52) is a protruding structure. When the fabric (4) is clamped, the first clamping frame (51) engages with the second clamping frame (52) through the fabric (4).

4. The high-temperature and high-humidity performance testing chamber for protective coating materials according to claim 2, characterized in that, A pressing unit (6) is provided above the detection chamber (21). The pressing unit (6) includes a pressing ring (61) that moves in the vertical direction. When the pressing ring (61) descends and presses the first clamping frame (51) to move to the lowest position, the first clamping frame (51) is sleeved on the periphery of the detection chamber (21).

5. The high-temperature and high-humidity performance testing chamber for protective coating materials according to claim 4, characterized in that, A drainage groove (511) is horizontally provided on the upper part of the first clamping frame (51). When the pressing ring (61) is lowered to the lowest position, the bottom end face of the drainage groove (511) is coplanar with the upper end face of the receiving fabric (4) located directly above the detection chamber (21).

6. The high-temperature and high-humidity performance testing chamber for protective coating materials according to claim 2, characterized in that, A receiving unit (7) is provided around the detection chamber (21) to support the second clamping frame (52). The receiving unit (7) includes a receiving ring (71) that can move in the vertical direction and support the second clamping frame (52). A spring (72) is provided at the lower part of the receiving ring (71) to provide support force to the receiving ring (71).

7. The high-temperature and high-humidity performance testing chamber for protective coating materials according to claim 6, characterized in that, A corrugated pipe (73) is vertically installed between the receiving ring (71) and the upper end face of the test platform (2). The two ends of the corrugated pipe (73) are fixedly connected to the receiving ring (71) and the test platform (2) respectively. An air pump (74) connected to the inside of the corrugated pipe (73) is installed at the lower end of the corrugated pipe (73).

8. The high-temperature and high-humidity performance testing chamber for protective coating materials according to claim 1, characterized in that, Below the test platform (2), there is a collection chamber (31) for collecting cooled water vapor and a heating chamber (32) connected to the collection chamber (31) arranged horizontally. A steam chamber (321) for storing steam is provided on the upper part of the heating chamber (32). A fan (34) is provided directly above the test chamber (21). A duct (33) connecting the fan (34) and the steam chamber (321) is provided.

9. A method for testing the high-temperature and high-humidity performance of protective coating materials, using the high-temperature and high-humidity performance testing chamber for protective coating materials as described in any one of claims 1-8, characterized in that, The specific steps are as follows: S1. Apply protective coating material to the upper surface of the receiving fabric (4) and place the receiving fabric (4) on the detection chamber (21) so that the receiving fabric (4) covers the upper part of the detection chamber (21) and the detection chamber (21) forms a detection cavity after being covered. S2. Seal the chamber (1), start the steam generating unit (3) and inject high-temperature steam into the chamber (1) to form a high-temperature and high-humidity environment inside the chamber (1), and preset the rated test time. S3. During the rated test time, the temperature sensor (22) and humidity sensor (23) detect the temperature and humidity in the detection chamber respectively. If the detected temperature and humidity values ​​do not change, it indicates that the protective coating material has good performance. If the detected temperature and humidity values ​​rise, it indicates that the protective coating material has not met the standard.

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