Thermosetting powder heat dissipation performance experimental device

Abstract

The utility model discloses a kind of thermosetting powder heat dissipation performance experimental device, including experimental shell, constant-temperature tank is opened in the experimental shell, hot plate is arranged in the constant-temperature tank, the thermosetting powder to be experimented is set on hot plate surface, scraping assembly for being used to evenly spread thermosetting powder is arranged in the experimental shell. Let first on the accumulated thermosetting powder of pole be scattered, make thermosetting powder be pushed to each place on hot plate surface, when there is no obvious accumulation, again rotate handle, make pole upwards, scraper downwards, and move support strip, let scraper contact with thermosetting powder on hot plate surface, evenly spread thermosetting powder on hot plate surface, measure temperature difference on the upper and lower surfaces of sample, combine with heat flow and sample thickness etc. Data, calculate heat transfer coefficient, evenly thermosetting powder so as to more accurate measurement, obtain more accurate experimental result.

Description

Technical Field

[0001] This utility model specifically relates to an experimental device for the heat dissipation performance of thermosetting powder. Background Technology

[0002] Thermosetting powder coatings are powder coatings that undergo a cross-linking reaction at certain temperatures to form a three-dimensional network structure. They are widely used in the coating of the outer casings of household appliances such as refrigerators, washing machines, and air conditioners. They provide an aesthetically pleasing appearance while also exhibiting good corrosion resistance and abrasion resistance.

[0003] Currently, it is impossible to determine the heat dissipation performance of thermosetting powder coatings after production. Therefore, it is necessary to place the thermosetting powder coating on the surface of a hot plate for measurement to calculate the thermal conductivity. However, the accumulation of thermosetting powder coating on the surface of the hot plate will affect the calculation of the thermal conductivity, thus causing deviations in the experimental results. Utility Model Content

[0004] The purpose of this invention is to provide an experimental device for the heat dissipation performance of thermosetting powders, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a thermosetting powder heat dissipation performance test device, comprising an experimental shell, a constant temperature bath is provided inside the experimental shell, a hot plate is provided inside the constant temperature bath, the thermosetting powder to be tested is placed on the surface of the hot plate, and a scraping component for uniformly spreading the thermosetting powder is provided inside the experimental shell.

[0006] Preferably, a first slide rail and a second slide rail are respectively provided on both sides of the experimental housing, and the leveling component includes a bearing seat disposed in the first slide rail and a slide rod disposed in the second slide rail.

[0007] Preferably, a connecting rod is provided on the side of the bearing housing away from the first slide rail, and a support bar is provided between the slide rod and the connecting rod.

[0008] Preferably, a scraper is provided on the upper surface of the support bar, and the scraper is tapered on the side away from the support bar.

[0009] Preferably, the lower surface of the support bar is provided with a plurality of levers, and there is a gap between every two adjacent levers.

[0010] Preferably, the end of the slide bar away from the support bar extends to the outside of the experimental housing and is connected to a handle.

[0011] Preferably, the lower surface of the experimental shell is provided with a discharge port, and a discharge pipe is inserted into the discharge port. The discharge pipe passes through the experimental shell and the hot plate and is connected to a cover.

[0012] The technical effects and advantages of this utility model are as follows: In this thermosetting powder heat dissipation performance experimental device, after placing the thermosetting powder to be tested on the surface of a hot plate, firstly, the handle is rotated. Through the cooperation of the bearing seat, the support bar rotates, so that the lever faces downward and the scraper faces upward. Pushing the handle, as the bearing seat and slide rod slide along the length directions of the first and second slide rails respectively, the support bar moves accordingly. The lever first disperses the accumulated thermosetting powder, pushing it to various parts of the hot plate surface. When there is no obvious accumulation, the handle is rotated again, so that the lever faces upward and the scraper faces downward, and the support bar is moved, allowing the scraper to contact the thermosetting powder on the hot plate surface, uniformly spreading the thermosetting powder on the hot plate surface. The temperature difference between the upper and lower surfaces of the sample is measured. Combined with data such as heat flow and sample thickness, the thermal conductivity is calculated. Uniform thermosetting powder allows for more accurate calculations and yields more precise experimental results. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the first slide rail of this utility model;

[0015] Figure 3 This is a schematic diagram of the discharge port structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the scraper structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the support strip of this utility model.

[0018] In the diagram: 1. Experimental shell; 2. Constant temperature bath; 3. Hot plate; 4. First slide rail; 5. Second slide rail; 6. Bearing seat; 7. Slide rod; 8. Connecting rod; 9. Support bar; 10. Scraper; 11. Toggle lever; 12. Handle; 13. Discharge port. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] For ease of calculating thermal conductivity, refer to Figure 1 , Figure 2 and Figure 3As shown, the experiment includes an experimental housing 1, within which a constant temperature bath 2 is provided. A hot plate 3 is installed within the constant temperature bath 2. The thermosetting powder to be tested is placed on the surface of the hot plate 3. The experimental housing 1 is equipped with a scraping component for evenly spreading the thermosetting powder. After placing the thermosetting powder on the surface of the hot plate 3, the handle 12 is first rotated. Through the cooperation of the bearing seat 6, the support bar 9 is rotated, causing the lever 11 to point downwards and the scraper 10 to point upwards. Pushing the handle 12 causes the bearing seat 6 and the slide bar 7 to move along the length directions of the first slide rail 4 and the second slide rail 5 respectively. The sliding motion causes the support bar 9 to move, allowing the lever 11 to first disperse the accumulated thermosetting powder, pushing it to various parts of the hot plate 3 surface. Once there is no obvious accumulation, the handle 12 is turned again, so that the lever 11 faces upward and the scraper 10 faces downward, and the support bar 9 is moved, allowing the scraper 10 to contact the thermosetting powder on the surface of the hot plate 3, evenly spreading the thermosetting powder on the surface of the hot plate 3. The temperature difference between the upper and lower surfaces of the sample is measured, and the thermal conductivity is calculated by combining data such as heat flow and sample thickness. The uniform thermosetting powder facilitates more accurate calculations.

[0021] To ensure a more uniform dispersion of the thermosetting powder on the surface of hot plate 3, refer to... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the experimental housing 1 has a first slide rail 4 and a second slide rail 5 respectively on both sides. The leveling assembly includes a bearing seat 6 disposed in the first slide rail 4 and a slide rod 7 disposed in the second slide rail 5. As the bearing seat 6 and the slide rod 7 slide along the length of the first slide rail 4 and the second slide rail 5 respectively, the support bar 9 can be moved in the constant temperature bath 2, so that the scraper 10 or the lever 11 can level the thermosetting powder on the surface of the hot plate 3, making it evenly distributed on the surface of the hot plate 3. A connecting rod 8 is disposed on the side of the bearing seat 6 away from the first slide rail 4, and a support bar 9 is disposed between the slide rod 7 and the connecting rod 8. A scraper 10 is disposed on the upper surface of the support bar 9. The scraper 10 is tapered on the side away from the support bar 9. The tapered scraper 10 is more conducive to pushing the thermosetting powder on the surface of the hot plate 3. As the support bar 9 moves back and forth in the constant temperature bath 2, the thermosetting powder on the surface of the hot plate 3 is leveled, allowing it to be evenly coated. The lower surface of the support bar 9 is provided with several levers 11, with a gap between each pair of adjacent levers 11. The levers 11 with gaps facilitate the leveling of the accumulated thermosetting powder, achieving initial uniformity, which is conducive to the subsequent leveling by the scraper 10. The end of the slide bar 7 away from the support bar 9 extends to the outside of the experimental shell 1 and is connected to a handle 12. Rotating the handle 12, with the cooperation of the bearing seat 6, drives the support bar 9 to rotate, thereby changing the setting direction of the scraper 10 and the levers 11. According to the different accumulation state of the thermosetting powder, adjusting the scraper 10 and the levers 11 and pushing the handle 12 can drive the support bar 9 to move. The lower surface of the experimental shell 1 has a discharge port 13, and a discharge pipe is inserted into the discharge port 13. The discharge pipe passes through the experimental shell 1 and the hot plate 3 and is connected to a cover. By opening the cover, the thermosetting powder after the experiment can be discharged through the discharge port 13. In this process, after the thermosetting powder is evenly coated, the support strip 9 is moved to the side of the constant temperature bath 2, and a cooling plate is placed on the surface of the thermosetting powder. The hot plate 3 is used to provide a constant heat source, and the cooling plate is used to form a temperature gradient. The experimental shell 1 includes a temperature sensor and a data acquisition system. The hot plate 3 method is a classic steady-state method used to measure the thermal conductivity of materials, especially suitable for materials with low thermal conductivity. The specific experimental steps, experimental devices, and systems are all existing technologies and will not be described in detail here.

[0022] In use, first place the thermosetting powder to be tested on the surface of the hot plate 3. Then, turn the handle 12. With the cooperation of the bearing seat 6, the support bar 9 will rotate, so that the lever 11 faces down and the scraper 10 faces up. Push the handle 12. As the bearing seat 6 and the slide bar 7 slide along the length of the first slide rail 4 and the second slide rail 5 respectively, the support bar 9 will move accordingly. The lever 11 will first disperse the accumulated thermosetting powder, pushing the thermosetting powder to various parts of the surface of the hot plate 3. When there is no obvious accumulation, turn the handle 12 again, so that the lever 11 faces up and the scraper 10 faces down, and move the support bar 9 so that the scraper 10 comes into contact with the thermosetting powder on the surface of the hot plate 3, so that the thermosetting powder on the surface of the hot plate 3 is evenly spread. Measure the temperature difference between the upper and lower surfaces of the sample, and calculate the thermal conductivity by combining the heat flow and sample thickness data.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model.

Claims

1. A device for testing the heat dissipation performance of a thermosetting powder, characterized in that, The experimental housing (1) includes a constant temperature bath (2) inside the experimental housing (1), a hot plate (3) inside the constant temperature bath (2), the thermosetting powder to be tested is placed on the surface of the hot plate (3), and a scraping component for evenly spreading the thermosetting powder is provided inside the experimental housing (1).

2. The thermosetting powder heat dissipation performance experiment device according to claim 1, characterized in that: The experimental housing (1) has a first slide rail (4) and a second slide rail (5) on its two sides respectively. The scraping assembly includes a bearing seat (6) in the first slide rail (4) and a slide rod (7) in the second slide rail (5).

3. The thermosetting powder heat dissipation performance experimental device according to claim 2, characterized in that: A connecting rod (8) is provided on the side of the bearing seat (6) away from the first slide rail (4), and a support bar (9) is provided between the slide rod (7) and the connecting rod (8).

4. The thermosetting powder heat dissipation performance experiment device according to claim 3, characterized in that: The upper surface of the support bar (9) is provided with a scraper (10), and the scraper (10) is tapered on the side away from the support bar (9).

5. The thermosetting powder heat dissipation performance experimental device according to claim 4, characterized in that: The lower surface of the support bar (9) is provided with a number of levers (11), and there is a gap between each two adjacent levers (11).

6. The thermosetting powder heat dissipation performance experimental device according to claim 5, characterized in that: The slide bar (7) extends from the end away from the support bar (9) to the outside of the experimental shell (1) and is connected to a handle (12).

7. The thermosetting powder heat dissipation performance experimental device according to claim 1, characterized in that: The experimental shell (1) has a discharge port (13) on its lower surface. A discharge pipe is inserted into the discharge port (13). The discharge pipe passes through the experimental shell (1) and the hot plate (3) and is connected to a cover.

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