A device and method for testing the moisture resistance of a paint film

Abstract

The application provides a paint film moisture resistance test method and device, relates to the paint film test field of metal or non-metal materials, and comprises a heating system, a temperature control system, a water level control system and a sample clamping module. The water level control system comprises a water tank, and the water tank is connected with a water inlet assembly, a water level control assembly and a drainage assembly. The sample clamping module is connected with the water tank, is used for embedding a sample plate, and places one end of the sample plate in the water tank to test the paint film moisture resistance of the sample plate. The application provides a paint film moisture resistance test device and method, which can be used for testing the moisture resistance of metal or non-metal materials after paint coating or spraying. The water level control system can control the liquid level of the water tank. The temperature control system can control the liquid temperature in the water tank, and the liquid temperature in the water tank is controlled to be 38 DEG C through a controller. The heating switch is turned on, the time is recorded, and the paint film moisture resistance test is started.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of metal or non-metal material paint film testing, and particularly relates to a paint film moisture resistance testing method and device. BACKGROUND

[0002] The paint film moisture resistance refers to the change of the paint film quality (such as the paint film adhesion, the stone chip resistance, whether the paint film is peeled off, whether rust occurs, etc.) of the metal or non-metal material after being painted or sprayed and then being placed in a continuous condensation high humidity environment for a certain time.

[0003] According to the requirements of the national standard GB / T 13893-2008 Determination of Resistance to Wetness of Pigment and Varnish Coatings - Continuous Condensation Method, the moisture resistance testing mainly has the following four requirements:

[0004] 1. containing a heating device;

[0005] 2. the air temperature of the space 25 mm below the test sample is 38±2℃ or 49℃ or 60℃;

[0006] 3. the test sample and the horizontal angle is 60° or 15°;

[0007] 4. containing a liquid level control device.

[0008] The national standard only specifies the testing requirements, does not specify the corresponding working equipment, and does not explain the method for achieving the testing requirements. Therefore, the present application designs a moisture resistance testing method and the corresponding device according to the testing requirements of the national standard. SUMMARY

[0009] The present application aims to provide a paint film moisture resistance testing method and device, which can be used to test the moisture resistance of the metal or non-metal material after being painted or sprayed, the water level control system can control the liquid level of the water tank, and the temperature control system can control the temperature of the liquid in the water tank, thereby solving the problems in the background technology.

[0010] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0011] A paint film moisture resistance testing device, comprising:

[0012] a heating system;

[0013] a temperature control system, which is connected with the heating system and controls the heating system;

[0014] A water level control system is connected with the heating system and the temperature control system respectively, and comprises a water tank, a water inlet assembly, a water level control assembly and a water outlet assembly. The water inlet assembly and the water outlet assembly are connected with the water tank, the water level control assembly is connected with the water inlet assembly, liquid enters the water tank from the water inlet assembly, the water level in the water tank is controlled by the water level control assembly, liquid in the water tank flows out from the water outlet assembly, the heating system heats the liquid in the water tank, and the temperature control system controls the temperature of the liquid in the water tank.

[0015] A sample clamping module is connected with the water tank, is used for embedding a sample plate, and places one end of the sample plate in the water tank, so as to test the moisture resistance of a paint film of the sample plate.

[0016] As a further scheme of the present application, the heating system comprises a heating rod and a power line. One end of the heating rod is connected to the side of the water tank and heats the liquid in the water tank. The highest temperature of the liquid in the water tank heated by the heating rod is less than the boiling point of water. One end of the power line is electrically connected with the heating rod, and the other end is connected with a power supply to be electrified.

[0017] As a further scheme of the present application, the temperature control system comprises a controller and a temperature sensor. The controller is electrically connected with the temperature sensor and can control the temperature of the liquid in the water tank. The temperature sensor detects the temperature in the water tank and transmits a detection signal to the controller. The controller is electrically connected with the heating rod and controls the start and stop of the heating rod. When the temperature sensor detects that the temperature of the liquid in the water tank is greater than a set temperature, the controller controls the heating rod to stop heating.

[0018] The controller is provided with a heating switch which is electrically connected with the heating rod and controls the start and stop of the heating rod.

[0019] As a further scheme of the present application, the water inlet assembly comprises a water inlet pipe and a water inlet valve. The water inlet pipe is connected with the water tank, and the water inlet valve is connected with the water inlet pipe. Liquid enters the water tank from the water inlet pipe, and the flow of the liquid in the water inlet pipe is controlled by the water inlet valve.

[0020] As a further scheme of the present application, the water level control assembly comprises a floating ball, a first connecting rod, a movable shaft, a water-proof cover and a second connecting rod. One end of the floating ball is connected with the first connecting rod, the other end of the first connecting rod is connected with the water-proof cover, the movable shaft is connected with the first connecting rod, one end of the second connecting rod is connected with the water inlet pipe, and the other end of the second connecting rod is connected with the movable shaft. When the water level in the water tank rises, the floating ball rises, the first connecting rod rotates through the movable shaft, the water-proof cover moves downward and covers the water inlet of the water inlet pipe, and the water inlet is stopped to control the water level.

[0021] As a further scheme of the present application: the height of the floating ball on the first connecting rod can be adjusted, so that the closing and non-closing of the water inlet of the water inlet pipe by the water-proof cover can be adjusted, so as to adjust the height of the water level in the water tank.

[0022] As a further scheme of the present application: the water drainage assembly comprises a water drainage pipe and a water drainage valve, the water drainage pipe is connected with the water tank, and the water drainage valve is connected with the water drainage pipe; the liquid in the water tank is drained from the water drainage pipe and the flow of the liquid in the water drainage pipe is controlled by the water drainage valve.

[0023] As a further scheme of the present application: the sample clamping module comprises sample clamping plates and a baffle, two sample clamping plates are arranged, one end of the sample clamping plate is connected with the water tank, the other end is connected with the baffle, and the baffle is arranged between the sample clamping plates; the clamping angle between the sample clamping plate and the baffle is adjusted by arranging sample clamping plates with different lengths; the sample clamping plate is used for embedding a sample plate and placing the sample plate in the water tank to test the moisture resistance of the paint film of the sample plate.

[0024] As a further scheme of the present application: the top of the water tank is provided with a tank cover, and the tank cover is covered on the water tank.

[0025] Based on the same inventive concept, the present application also provides a paint film moisture resistance test method, the paint film moisture resistance test method comprises:

[0026] Inserting the sample plate for testing into the sample clamping plate;

[0027] Opening the water inlet valve, placing one end of the sample clamping plate in the water tank and the other end on the top end of the baffle after reaching the control liquid level;

[0028] Covering the tank cover on the water tank;

[0029] Turning on the power supply, and controlling the liquid temperature in the water tank to be 38 DEG C by the controller;

[0030] Turning on the heating switch, recording the time, and starting the paint film moisture resistance test.

[0031] Compared with the prior art, the present application has the following advantages:

[0032] The application provides a paint film moisture resistance testing device and method, which can be used for testing the moisture resistance of metal or non-metal materials after being painted or sprayed with paint. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0034] In order to more completely understand the present application and its beneficial effects, the following will be described with reference to the drawings. In the following description, the same reference numerals represent the same parts.

[0035] Figure 1 The structure diagram of the sample clamp plate of the paint film moisture resistance testing device of the present application is inclined at 60°.

[0036] Figure 2 The structure diagram of the sample clamp plate of the paint film moisture resistance testing device of the present application is inclined at 15°.

[0037] Figure 3 The three views of the water tank of the paint film moisture resistance testing device of the present application.

[0038] Figure 4 The three views of the sample clamp plate of the paint film moisture resistance testing device of the present application. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the scope of protection of the present application.

[0040] Embodiment 1:

[0041] Please refer to the drawings Figure 1 , 3 and 4, a paint film moisture resistance testing device, comprising:

[0042] a heating system 1;

[0043] a temperature control system 2, the temperature control system 2 is connected with the heating system 1, and the temperature control system 2 controls the heating system 1;

[0044] a water level control system 3, the water level control system 3 is connected with the heating system 1 and the temperature control system 2 respectively, and the water level control system 3 comprises a water tank 31, the water tank 31 is connected with a water inlet assembly 32, a water level control assembly 33 and a water outlet assembly 34, the water inlet assembly 32 and the water outlet assembly 34 are fixedly connected with the water tank 31, the water level control assembly 33 is fixedly connected with the water inlet assembly 32, liquid enters the water tank 31 from the water inlet assembly 32, and the water level of the water tank 31 is controlled by the water level control assembly 33, the liquid in the water tank 31 flows out from the water outlet assembly 34, the heating system 1 heats the liquid in the water tank 31, and the temperature control system 2 controls the temperature of the liquid in the water tank 31;

[0045] a sample clamping module 4, the sample clamping module 4 is fixedly connected with the water tank 31, the sample clamping module 4 is used for embedding a sample plate, and one end of the sample plate is arranged in the water tank 31, and the paint film moisture resistance of the sample plate is detected.

[0046] The paint film moisture resistance testing device and method can be used for testing the moisture resistance of metal or non-metal materials after being painted or sprayed, and the paint film moisture resistance testing is specifically as follows: a sample plate used for testing is inserted into a sample clamping plate 41; a water inlet valve 322 is opened, the water level control system 3 can control the liquid level of the liquid in the water tank 31, after the liquid level is controlled, one end of the sample clamping plate 41 is arranged in the water tank 31, and the other end is overlapped on the top end of the baffle plate 42; a tank cover 5 is covered on the water tank 31; a power supply is turned on, the temperature control system 2 can control the temperature of the liquid in the water tank 31, and the temperature of the liquid in the water tank 31 is controlled to be 38 DEG C through the controller 21; a heating switch is turned on, time is recorded, and the paint film moisture resistance testing is started.

[0047] In a preferred embodiment of the present application, the heating system 1 comprises a heating rod 11 and a power line 12, one end of the heating rod 11 is fixedly connected to the side of the water tank 31, and the heating rod 11 heats the liquid in the water tank 31, the temperature control system 2 controls the heating rod 11, so that the highest temperature of the liquid in the water tank 31 heated by the heating rod 11 is less than the boiling point of water, one end of the power line 12 is electrically connected with the heating rod 11, and the other end is connected with a power supply to be electrified, the heating rod 11 generates heat after being electrified, and the liquid in the water tank 31 is heated.

[0048] In a preferred embodiment of the present application, the temperature control system 2 comprises a controller 21 and a temperature sensor 22, the controller 21 is electrically connected with the temperature sensor 22 and can control the temperature of the liquid in the water tank 31, the temperature sensor 22 detects the temperature of the liquid in the water tank 31 and transmits a detection signal to the controller 21, the controller 21 is electrically connected with the heating rod 11 and controls the start and stop of the heating rod 11; when the temperature sensor 22 detects that the temperature of the liquid in the water tank 31 is greater than the set temperature, the controller 21 controls the heating rod 11 and makes the heating rod 11 stop heating.

[0049] The controller 21 is provided with a heating switch, the heating switch is electrically connected with the heating rod 11 and controls the start and stop of the heating rod 11.

[0050] In a preferred embodiment of the present application, the water inlet assembly 32 comprises a water inlet pipe 321 and a water inlet valve 322, the water inlet pipe 321 is fixedly connected with the water tank 31, and the water inlet valve 322 is fixedly connected with the water inlet pipe 321; the liquid enters the water tank 31 from the water inlet pipe 321 and the flow of the liquid in the water inlet pipe 321 can be controlled through the water inlet valve 322; the top of the water tank 31 is provided with a tank cover 5, and the tank cover 5 covers the water tank 31.

[0051] In a preferred embodiment of the present application, the water level control assembly 33 comprises a floating ball 331, a first connecting rod 332, a movable shaft 333, a water-proof cover 334 and a second connecting rod 335, the floating ball 331 is fixedly connected with one end of the first connecting rod 332, the water-proof cover 334 is fixedly connected with the other end of the first connecting rod 332, the movable shaft 333 is fixedly connected with the first connecting rod 332, one end of the second connecting rod 335 is fixedly connected with the water inlet pipe 321, and the other end is rotatably connected with the movable shaft 333, such as hinged; when the water level in the water tank 31 rises, the floating ball 331 rises accordingly, the first connecting rod 332 rotates through the movable shaft 333, so that the water-proof cover 334 moves downward and covers the water inlet of the water inlet pipe 321, thereby stopping the water inlet to control the water level; further, the height of the floating ball 331 on the first connecting rod 332 can be adjusted, and the height of the water-proof cover 334 can be adjusted through the movable shaft 333, so that the closing and unclosing of the water-proof cover 334 and the water inlet of the water inlet pipe 321 can be adjusted, thereby adjusting the height of the water level in the water tank 31.

[0052] In a preferred embodiment of the present application, the water drainage assembly 34 comprises a water drainage pipe 341 and a water drainage valve 342, the water drainage pipe 341 is fixedly connected with the water tank 31, and the water drainage valve 342 is fixedly connected with the water drainage pipe 341; the liquid in the water tank 31 is drained from the water drainage pipe 341, and the flow of the liquid in the water drainage pipe 341 is controlled through the water drainage valve 342.

[0053] In a preferred embodiment of the present invention, the sample clamping module 4 includes a sample clamping plate 41 and a baffle 42. Two sample clamping plates 41 are provided. One end of the sample clamping plate 41 is fixedly connected to the water tank 31, and the other end is fixedly connected to the baffle 42. The baffle 42 is disposed between the sample clamping plates 41. By setting sample clamping plates 41 of different lengths, the included angle between the sample clamping plate 41 and the baffle 42 can be adjusted. The sample clamping plate 41 is used to embed the sample plate and place the sample plate in the water tank 31 to test the moisture resistance of the paint film of the sample plate.

[0054] Based on the same inventive concept, this application also provides a method for testing the moisture resistance of a paint film, the method comprising:

[0055] Insert the 100×150mm sample plate for testing into the sample clamp 41, and then cover the excess area with a blank plate.

[0056] After opening the water inlet valve 322 and reaching the controlled liquid level, place one end of the sample clamp 41 in the water tank 31 and fix the other end to the top of the baffle 42. At this time, the horizontal angle of the sample plate is 60°.

[0057] Cover the water tank 31 with the lid 5;

[0058] Turn on the power and control the liquid temperature in the water tank 31 to 38℃ via controller 21;

[0059] Turn on the heating switch, record the time, and begin the paint film moisture resistance test.

[0060] Example 2:

[0061] Please see the appendix Figure 2 , 3 In Example 4, the method for testing the moisture resistance of the paint film in this embodiment differs from that in Example 1, as detailed below:

[0062] Insert the 100×70mm sample plate for testing into the sample clamp 41, and then cover the excess area with a blank plate.

[0063] After opening the water inlet valve 322 and reaching the controlled liquid level, place one end of the sample clamp 41 in the water tank 31 and fix the other end to the bottom of the baffle 42. At this time, the horizontal angle of the sample plate is 15°.

[0064] Cover the water tank 31 with the lid 5;

[0065] Turn on the power and control the liquid temperature in the water tank 31 to 60℃ via controller 21;

[0066] Turn on the heating switch, record the time, and begin the paint film moisture resistance test.

[0067] This invention provides a device and method for testing the moisture resistance of paint films, which can be used to test the moisture resistance of metal or non-metal materials after painting or spraying. The specific steps for testing the moisture resistance of paint films are as follows: Insert the sample plate for testing into the sample clamp 41; open the water inlet valve 322, and the water level control system 3 can control the liquid level in the water tank 31. After reaching the control level, place one end of the sample clamp 41 in the water tank 31 and attach the other end to the top of the baffle 42; close the tank cover 5 on the water tank 31; turn on the power, and the temperature control system 2 can control the liquid temperature in the water tank 31, and the controller 21 controls the liquid temperature in the water tank 31 to 38°C; turn on the heating switch, record the time, and start the moisture resistance test of the paint film.

[0068] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0069] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0070] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A device for testing the moisture resistance of a paint film, characterized in that, include: Heating system; A temperature control system, which is connected to the heating system, controls the heating system; A water level control system is connected to the heating system and the temperature control system. The water level control system includes a water tank, which is connected to an inlet component, a water level control component, and a drain component. The inlet component and the drain component are connected to the water tank, and the water level control component is connected to the inlet component. Liquid enters the water tank from the inlet component, and the water level in the water tank is controlled by the water level control component. Liquid in the water tank flows out from the drain component. The heating system heats the liquid in the water tank, and the temperature control system controls the temperature of the liquid in the water tank. A sample clamping module is connected to the water tank. The sample clamping module is used to embed a sample plate and place one end of the sample plate in the water tank to test the moisture resistance of the paint film on the sample plate. The water inlet assembly includes a water inlet pipe and a water inlet valve. The water inlet pipe is connected to the water tank, and the water inlet valve is connected to the water inlet pipe. Liquid enters the water tank from the water inlet pipe, and the flow rate of liquid in the water inlet pipe is controlled by the water inlet valve. The water level control component includes a float, a first connecting rod, a movable shaft, a water-proof cover, and a second connecting rod. The float is connected to one end of the first connecting rod, the water-proof cover is connected to the other end of the first connecting rod, the movable shaft is connected to the first connecting rod, and one end of the second connecting rod is connected to the water inlet pipe, while the other end is connected to the movable shaft. When the water level in the tank rises, the float rises accordingly, and the first connecting rod rotates via the movable shaft, causing the water-proof cover to move downwards and cover the water inlet of the water inlet pipe, stopping the water intake and controlling the water level. The sample clamping module includes a sample clamp plate and a baffle. Two sample clamp plates are provided. One end of the sample clamp plate is connected to the water tank, and the other end is connected to the baffle plate. The baffle plate is located between the sample clamp plates. By setting sample clamp plates of different lengths, the included angle between the sample clamp plate and the baffle plate can be adjusted. The sample clamp plate is used to embed the sample plate and place the sample plate in the water tank to test the moisture resistance of the paint film on the sample plate.

2. The device for testing the moisture resistance of a paint film according to claim 1, characterized in that, The heating system includes a heating rod and a power cord. One end of the heating rod is connected to the side of the water tank and heats the liquid in the water tank. The maximum temperature of the liquid in the water tank heated by the heating rod is less than the boiling point of water. One end of the power cord is electrically connected to the heating rod, and the other end is connected to a power source.

3. The device for testing the moisture resistance of a paint film according to claim 2, characterized in that, The temperature control system includes a controller and a temperature sensor. The controller is electrically connected to the temperature sensor and can control the liquid temperature in the water tank. The temperature sensor detects the temperature in the water tank and transmits the detection signal to the controller. The controller is electrically connected to the heating rod and controls the start and stop of the heating rod. When the temperature sensor detects that the liquid temperature in the water tank is higher than the set temperature, the controller controls the heating rod and stops heating. The controller is equipped with a heating switch, which is electrically connected to the heating rod and controls the heating rod to start and stop.

4. The device for testing the moisture resistance of a paint film according to claim 1, characterized in that, The float on the first connecting rod is height adjustable, allowing the water inlet of the water inlet cover and the water inlet pipe to be closed or open, thereby adjusting the water level in the tank.

5. The device for testing the moisture resistance of a paint film according to claim 1, characterized in that, The drainage assembly includes a drain pipe and a drain valve. The drain pipe is connected to the water tank, and the drain valve is connected to the drain pipe. Liquid in the water tank is discharged from the drain pipe, and the flow rate of liquid in the drain pipe is controlled by the drain valve.

6. The device for testing the moisture resistance of a paint film according to claim 1, characterized in that, The water tank is equipped with a lid on top, which covers the water tank.

7. A method for testing the moisture resistance of a paint film, based on the paint film moisture resistance testing apparatus according to any one of claims 1-6, characterized in that, The method for testing the moisture resistance of the paint film includes: Insert the test specimen into the test specimen clamp; After opening the water inlet valve and reaching the controlled liquid level, place one end of the sample clamp in the water tank and attach the other end to the top of the baffle. Close the lid onto the water tank; Turn on the power and control the liquid temperature in the water tank to 38℃ using the controller. Turn on the heating switch, record the time, and begin the paint film moisture resistance test.

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