Device for testing flame-retardant and heat-insulating properties of fireproof coating

Abstract

The utility model relates to the technical field of coating performance testing devices, in particular to a fire retardant coating flame-retardant and heat-insulating performance testing device which comprises a mold body and a support structure. The mold body comprises a shell, a first limiting structure, a fixing structure and a sealing structure; the first limiting structure, the fixing structure and the sealing structure are arranged at the end, provided with the first opening, of the shell. The fixing structure is arranged on one side of the shell, and the first temperature probe is connected with the fixing structure; the support structure comprises a first support body and a second support body which are arranged at an interval, and the first support body is used for fixing a heating tool; the second frame body is used for containing a mold body. According to the utility model, when a new energy automobile burns, the protection effect of the fireproof coating on the battery is simulated, the influence of the fireproof coating on the internal temperature of the mold body can be accurately tested, and the problems that an existing testing device cannot simulate the influence of the fireproof coating on the internal temperature of a battery shell during combustion and the performance test of the fireproof coating is not comprehensive are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating performance testing devices, in particular to a flame retardant and heat insulation performance testing device for fire retardant coatings. Background Art

[0002] As one of the important process materials in automobile production, coating adhesive has a wide range of functions and is critical. In the process of automobile manufacturing, coating adhesive is widely used in automobile structural reinforcement, sealing and rust prevention, vibration and noise reduction, heat insulation and noise reduction, fastening and anti-loosening, bonding and fixing, simplifying manufacturing processes, and reducing vehicle weight.

[0003] With the rapid development of new energy vehicles, battery safety issues have become increasingly prominent, and the application of flame retardant and fireproof coatings in new energy vehicles has become increasingly important. Fireproof coatings are usually applied to the outer surface of the battery shell. When a vehicle burns, the entire battery is exposed to high temperature. At this time, the flame retardant and fireproof coating on the outer surface of the battery shell can protect the internal battery core.

[0004] The existing devices for testing the flame retardant and heat insulation performance of fire retardant coatings usually directly use a bracket to fix the test sample and the spray gun, and spray the flame at the side coated with the fire retardant coating. Then the temperature of the side of the test sample away from the fire retardant coating is tested to determine whether the performance of the fire retardant coating can meet expectations. However, the existing testing device can only test the temperature of the side of the test sample away from the fire retardant coating. When the fire retardant coating is applied to the outer surface of the battery shell, if the vehicle burns, the protective effect of the fire retardant coating on the battery is also reflected in the effect of the fire retardant coating on the temperature inside the battery shell. The existing testing device cannot simulate the effect of the fire retardant coating on the internal temperature of the battery shell during combustion, making the performance test of the fire retardant coating incomplete. Utility Model Content

[0005] The main purpose of the utility model is to provide a device for testing the flame retardant and heat-insulating properties of fire retardant coatings, which simulates the protective effect of fire retardant coatings on batteries when new energy vehicles are burning, can accurately test the influence of fire retardant coatings on the internal temperature of the mold body, and detect the flame retardant and heat-insulating properties of different fire retardant coatings, thereby solving the problem that the current devices for testing the flame retardant and heat-insulating properties of fire retardant coatings cannot simulate the influence of fire retardant coatings on the internal temperature of the battery shell during combustion, and the performance test of fire retardant coatings is not comprehensive.

[0006] To achieve the above-mentioned purpose, the utility model provides a flame retardant and heat insulation performance testing device for fire retardant coatings, comprising a mold body and a support structure; the mold body comprises a sealed shell, a first limiting structure, a fixing structure and a sealing structure; the two ends of the shell are respectively penetrated with a first opening and a second opening, the first limiting structure, the fixing structure and the sealing structure are respectively arranged at one end of the shell (11) provided with the first opening;

[0007] The first limiting structure includes a plurality of first limiting members, and a clamping groove is provided between the first limiting members and the housing, and the clamping groove is used for limiting and fixing the test sample;

[0008] The fixing structure is arranged on one side of the housing, and the first temperature probe is connected to the fixing structure;

[0009] The sealing structure includes a clamp, a first sealing member and a second sealing member. The clamp is arranged on both sides of the housing, and the first sealing member is arranged around the first opening;

[0010] The second sealing member is provided at the second opening. The second temperature probe and the third temperature probe respectively pass through the second sealing member and extend into the housing, and the second temperature probe is arranged close to the inner surface of the test sample;

[0011] The bracket structure includes a first frame body and a second frame body which are arranged at intervals. The first frame body is used for fixing the heating tool; the second frame body is used for placing the mold body, and one end of the mold body provided with the first opening faces the first frame body for placement.

[0012] Optionally, the first opening and the second opening are respectively arranged at the central position of the housing, and the third temperature probe is arranged at the geometric center position inside the housing;

[0013] The first opening is rectangular, and the second opening is circular.

[0014] Optionally, the first limiting member is in an L shape, and a plurality of the first limiting members are respectively arranged on both sides of the first opening along the height direction, and a supporting bottom plate is arranged at the bottom end of the lowermost first limiting member.

[0015] Optionally, a non-stick coating layer is arranged on the end face of the mold body provided with the first opening, and the material of the mold body is aluminum alloy.

[0016] Optionally, a groove for placing the first sealing member is arranged around the first opening.

[0017] Optionally, the fixing structure is arranged on one side of the housing close to the second frame body.

[0018] Optionally, the clamps are symmetrically arranged on both sides of the first opening, and the clamps are arranged between the two first limiting members.

[0019] Optionally, the second frame body includes a support column, a first support plate, and a second support plate. One side of the first support plate is connected to the support column, and the other side of the first support plate is slidably connected to the second support plate. The second support plate is slidably disposed on the first support plate in a direction close to or away from the first frame body. An adjustment knob is provided on the outer sidewall of the support column, and the adjustment knob is in transmission connection with the second support plate. The adjustment knob is used to adjust the position of the second support plate on the first support plate so that the second support plate slides close to and away from the first bracket.

[0020] Optionally, a scale line is provided on one side surface of the first support plate, and the scale line is arranged along the sliding direction of the second support plate.

[0021] Optionally, a second limiting structure is provided on the end surface of the second support plate away from the first support plate. The second limiting structure includes a plurality of second limiting members, and the second limiting members are L-shaped and are arranged at the corner positions of the second support plate.

[0022] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0023] In the present invention, a first limiting structure is provided to limit the test sample. The first sealing member can better seal the connection between the test sample and the first opening. The test sample is pressed against the first opening by the clamps provided on both sides of the housing, improving the sealing performance of the overall structure. The sealing structure forms a closed space inside the mold body to prevent external air from entering the mold body. The closed mold body can simulate the closed environment inside the battery case. The first temperature probe is fixed by the fixing structure provided on one side of the housing, and the second temperature probe and the third temperature probe pass through the second opening. The provided second sealing member can not only fix the second temperature probe and the third temperature probe, but also further ensure the sealing performance inside the mold body. By providing the first temperature probe, the second temperature probe, and the third temperature probe, the temperature of the outer surface of the test sample, the inner surface of the test sample, and the inside of the mold body can be measured respectively. In the bracket structure, the first frame body is used to fix the heating tool, and the second frame body is used to place the mold body. In the present invention, it is used to simulate the protection effect of the fireproof coating on the battery when a new energy vehicle burns. The closed mold body can accurately measure the influence of the fireproof coating on the outer surface on the temperature inside the mold body when the fireproof coating on the outer surface of the test sample is burned, so as to judge whether the performance of the fireproof coating meets the expectation, and can detect the flame retardant and heat insulation performance of different fireproof coatings. It solves the problem that the existing test device cannot simulate the influence of the fireproof coating on the internal temperature of the battery case during combustion, resulting in incomplete performance testing of the fireproof coating. Description of the Drawings

[0024] Figure 1 This is a three-dimensional structure diagram of the mold body of the device for testing the flame retardant and heat insulation performance of the fireproof coating of the present utility model;

[0025] Figure 2 This is a three-dimensional structure diagram of the mold body (excluding the first seal) of the device for testing the flame retardant and heat insulation performance of the fireproof coating of the present utility model;

[0026] Figure 3 This is another three-dimensional structure diagram (back side) of the mold body of the device for testing the flame retardant and heat insulation performance of the fireproof coating of the present utility model;

[0027] Figure 4 This is a three-dimensional structure diagram of the support structure of the device for testing the flame retardant and heat insulation performance of the fireproof coating of the present utility model;

[0028] Figure 5 This is a front view of the test sample with the fireproof coating to be tested on its outer surface in an embodiment of the present utility model.

[0029] Wherein: 1. Mold body; 11. Housing; 111. First opening; 1111. Groove; 112. Second opening; 113. Non-stick coating layer; 12. First limiting structure; 121. First limiting member; 1211. Card slot; 1212. Support bottom plate; 13. Fixing structure; 14. Sealing structure; 141. Clamp; 142. First seal; 143. Second seal; 2. Support structure; 21. First frame body; 22. Second frame body; 221. Support column; 2211. Adjusting knob; 222. First support plate; 2221. Scale line; 223. Second support plate; 2231. Second limiting structure; 2231a. Second limiting member; 3. Test sample; 31. Fireproof coating; 4. Base. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] In the present utility model, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where both A and B are satisfied. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0034] The present utility model provides a device for testing the flame retardancy and heat insulation performance of fireproof coatings.

[0035] In the embodiment of the present utility model, as Figures 1 to 5 shown, the device for testing the flame retardancy and heat insulation performance of fireproof coatings includes a mold body 1 and a support structure 2; the mold body 1 includes a sealed housing 11, a first limiting structure 12, a fixing structure 13, and a sealing structure 14; first openings 111 and second openings 112 are respectively formed through both ends of the housing 11, and the first limiting structure 12, the fixing structure 13, and the sealing structure 14 are respectively arranged at one end of the housing 11 provided with the first opening 111;

[0036] The first limiting structure 12 includes a plurality of first limiting members 121, and a clamping groove 1211 is provided between the first limiting members 121 and the housing 11. The clamping groove 1211 is used for limiting and fixing the test specimen 3; the first limiting structure 12 plays a limiting role on the test specimen 3 (the outer surface of the test specimen 3 has been coated with the fireproof coating 31 to be tested), making it easier for the test specimen 3 to be sealed with the first opening 111 and improving the test efficiency;

[0037] The fixing structure 13 is arranged on one side of the housing 11, and the first temperature probe is connected to the fixing structure 13; the first temperature probe is arranged corresponding to the position of the fireproof coating 31, and the first temperature probe is used to measure the heating temperature of the outer surface of the test specimen 3 (i.e., the position of the fireproof coating 31);

[0038] The sealing structure 14 includes a clamp 141, a first seal 142 and a second seal 143. The clamp 141 is arranged on both sides of the housing 11, and the first seal 142 is arranged around the first opening 111; the test specimen 3 is connected to the first opening 111 through the first seal 142, and the position of the first opening 111 corresponds to the position of the fireproof coating 31; when the test specimen 3 is clamped into the first limiting structure 12, the clamp 141 and the first seal 142 can seal the connection between the inner surface of the test specimen 3 and the first opening 111. At this time, a closed environment is formed inside the mold body 1 to prevent external air from entering the mold body 1;

[0039] The second opening 112 is provided with a second seal 143. The second temperature probe and the third temperature probe respectively pass through the second seal 143 and extend into the housing 11. The second temperature probe is closely attached to the inner surface of the test specimen 3; the second temperature probe is used to measure the inner surface temperature of the test specimen 3. The second temperature probe is closely attached to the inner surface of the test specimen 3. Preferably, the second temperature probe is a K-type temperature probe; the third temperature probe is used to measure the temperature inside the housing 11;

[0040] The bracket structure 2 includes a first frame body 21 and a second frame body 22 arranged at intervals. The first frame body 21 is used to fix the heating tool; the second frame body 22 is used to place the mold body 1, and the end of the mold body 1 provided with the first opening 111 is placed towards the first frame body 21.

[0041] In the present utility model, a first limiting structure 12 is provided to limit the test sample 3. The first seal 142 can better seal the connection between the test sample 3 and the first opening 111. The test sample 3 is pressed towards the first opening 111 by the clamps 141 provided on both sides of the housing 11, improving the sealing performance of the overall structure and forming a closed space inside the mold body 1 to prevent external air from entering the mold body 1. The closed mold body 1 can simulate the closed environment inside the battery case. The first temperature probe is fixed by the fixing structure 13 provided on one side of the housing 11, and the second temperature probe and the third temperature probe pass through the second opening 112. The provided second seal 143 can not only fix the second temperature probe and the third temperature probe (specifically, through holes for the second temperature probe and the third temperature probe to pass through can be provided in the second seal 143, and these through holes are only for the second temperature probe and the third temperature probe to pass through without leaving gaps), but also further ensure the sealing performance inside the mold body 1. By providing the first temperature probe, the second temperature probe and the third temperature probe, the temperature on the outer surface of the test sample 3, the inner surface of the test sample 3 and inside the mold body 1 can be measured respectively. In the support structure 2, the first frame body 21 is used to fix the heating tool, and the second frame body 22 is used to place the mold body 1. In the present utility model, when simulating the protection effect of the fireproof coating 31 on the battery during the combustion of a new energy vehicle, the closed mold body 1 can accurately measure the influence of the fireproof coating 31 on the outer surface of the test sample 3 on the internal temperature of the mold body 1 when the fireproof coating 31 on the outer surface is burning, so as to judge whether the performance of the fireproof coating 31 meets the expectations and can detect the flame retardant and heat insulation performance of different fireproof coatings 31. It solves the problem that the existing test device cannot simulate the influence of the fireproof coating 31 on the internal temperature of the battery case during combustion, resulting in incomplete performance testing of the fireproof coating 31.

[0042] As Figures 1 to 3 shown, in an embodiment of the present application, the first opening 111 and the second opening 112 are respectively arranged at the central position of the housing 11, and the third temperature probe is arranged at the geometric center position inside the housing 11;

[0043] The first opening 111 is rectangular, and the second opening 112 is circular.

[0044] The first opening 111 and the second opening 112 are arranged at the central position of the housing 11, which is convenient for quickly determining the fixed installation positions of the first temperature probe, the second temperature probe and the third temperature probe, and further improving the test efficiency. The third temperature probe is arranged at the geometric center position inside the housing 11. At this time, the temperature detected by the third temperature probe can more accurately reflect the actual temperature situation inside the housing 11;

[0045] The first opening 111 is rectangular. When the test sample 3 is inserted into the first limiting structure 12, the position of the fireproof coating 31 corresponds to the position of the first opening 111 at this time. When the heating tool heats the outer surface of the test sample 3 (i.e., the position of the fireproof coating 31), the fireproof coating 31 has a certain heat-receiving area at this time. The rectangular first opening 111 enables a larger heat transfer area when the heat on the outer surface of the test sample 3 is transferred to the inner surface. Therefore, the heat transfer is more uniform and the transfer speed is faster, thereby improving the efficiency of measuring the temperature of the inner surface of the test sample 3. The second opening 112 is circular. While ensuring that the second temperature probe and the third temperature probe can pass through, it ensures that the second seal 143 can seal the second opening 112.

[0046] Preferably, the length and width of the first opening 111 are 100 - 150 mm respectively, and the aperture of the second opening 112 is 10 - 30 mm.

[0047] As Figure 1 and Figure 2 As shown, in an embodiment of the present application, the first limiting member 121 is in an L shape. A plurality of first limiting members 121 distributed along the height direction are respectively provided on both sides of the first opening 111, and a supporting bottom plate 1212 is provided at the bottom end of the lowermost first limiting member 121.

[0048] The first limiting member 121 is an L-shaped member formed by splicing two plates or an L-shaped member formed by bending, so that the test sample 3 can be inserted into the card slot 1211 from top to bottom. A supporting bottom plate 1212 is provided at the bottom end of the lowermost first limiting member 121, so that the lowermost first limiting member 121 can support the test sample 3 and prevent the test sample 3 from sliding out and falling from the card slot 1211.

[0049] Preferably, the number of the first limiting members 121 is 4, and the 4 first limiting members 121 are respectively arranged at the four corners of the end face of the housing 11.

[0050] Preferably, the width of the card slot 1211 is 2 - 5 mm. By limiting the width of the card slot 1211 to 2 - 5 mm, the test sample 3 with a thickness of 2 - 5 mm can be inserted into the card slot 1211. Therefore, the utility model can be applied to the detection of test samples 3 with a certain range of thicknesses and has high practicability.

[0051] As Figure 1 As shown, in an embodiment of the present application, a non-stick coating layer 113 is provided on the end face of the mold body 1 where the first opening 111 is provided, and the material of the mold body 1 is aluminum alloy.

[0052] The end face of the mold body 1 with the first opening 111 is provided with a non-stick coating layer 113, which helps to reduce the adhesion force between the mold body 1 and the first seal 142, and thus facilitates the peeling of the first seal 142 after the test. Preferably, the first seal 142 is a high-temperature-resistant sealing ring, such as a nitrile rubber sealing ring, a fluororubber sealing ring, etc. The mold body 1 made of aluminum alloy has good corrosion resistance, oxidation resistance and high stability, and thus can extend the service life of the present utility model.

[0053] Preferably, the non-stick coating layer 113 is a fluorocarbon coating, a silicone coating or a polyethersulfone coating; preferably, the length of the mold body 1 is 200 - 300 mm, the width is 200 - 300 mm, and the height is 100 - 150 mm.

[0054] Such as Figure 1 and Figure 2 As shown in [figures], in an embodiment of the present application, a groove 1111 for placing the first seal 142 is provided around the first opening 111.

[0055] Providing the groove 1111 around the first opening 111 can enable the first seal 142 to fit more closely around the first opening 111, play a certain role in fixing the first seal 142, and at the same time the groove 1111 also provides a clear installation position for the first seal 142, simplifying the installation operation.

[0056] Such as Figure 1 and Figure 5 As shown in [figures], in an embodiment of the present application, the fixing structure 13 is arranged on one side of the housing 11 close to the second frame body 22.

[0057] A clamping groove 1211 is provided between the first limiting member 121 and the housing 11. The fixing structure 13 is arranged on one side of the housing 11 close to the second frame body 22. When the test sample 3 is inserted into the clamping groove 1211 from top to bottom, it can be avoided that the position of the fixing structure 13 affects the insertion of the test sample 3 into the clamping groove 1211.

[0058] Specifically, the fixing structure 13 can be a fixing plate with a fixing hole at one end, and the first temperature probe is inserted into the fixing hole of the fixing plate and connected to the fixing structure 13.

[0059] Such as Figure 1 and Figure 2 As shown in [figures], in an embodiment of the present application, the clamps 141 are symmetrically arranged on both sides of the first opening 111, and the clamps 141 are arranged between the two first limiting members 121.

[0060] The symmetrically arranged clamp 141 can evenly press the test sample 3 against the first opening 111, so that the contact between the test sample 3 and the first opening 111 is closer, and the sealing of the connection between the test sample 3 and the first opening 111 is improved, ensuring that a closed space is formed inside the mold body 1, preventing external air from entering the interior of the mold body 1, and preventing the air inside the mold body 1 from leaking out, thereby avoiding inaccurate measurement of the inner surface temperature of the test sample 3 and the internal temperature of the mold body 1.

[0061] Preferably, the clamp 141 is an L-shaped plate, one side of the L-shaped plate is connected to the shell 11, and the other side is provided with a threaded hole. The bolt passes through the threaded hole and is connected to the pressing plate. The pressing plate is arranged on the side of the L-shaped plate close to the shell 11. When the test sample 3 is inserted into the slot 1211, the bolt is turned and the pressing plate presses the test sample 3 toward the first opening 111.

[0062] like Figure 4 As shown, in one embodiment of the present application, the second frame 22 includes a support column 221, a first support plate 222 and a second support plate 223, one side of the first support plate 222 is connected to the support column 221, and the other side of the first support plate 222 is slidably connected to the second support plate 223, and the second support plate 223 is slidably arranged on the first support plate 222 along a direction approaching or moving away from the first frame 21, and an adjusting knob 2211 is provided on the outer side wall of the support column 221, and the adjusting knob 2211 is transmission-connected to the second support plate 223, and the adjusting knob 2211 is used to adjust the position of the second support plate 223 on the first support plate 222 so that the second support plate 223 slides close to and away from the first frame 21.

[0063] In the support structure 2 of the utility model, the first frame 21 is used to fix the heating tool, and the second frame 22 is used to place the mold body 1. The distance between the second support plate 223 and the heating tool can be adjusted by the adjustment knob 2211 on the outer wall of the support column 221, so that the outer surface temperature of the test sample 3 reaches a predetermined temperature.

[0064] In a preferred embodiment, a through groove is provided in the first support plate 222 along its thickness direction, and a rack is connected to the surface of the second support plate 223 close to the first support plate 222, and the rack is arranged in the through groove. A first sprocket connected to the adjustment knob 2211 is arranged in the support column 221. A second sprocket is arranged at one end of the support column 221 close to the first support plate 222. The first sprocket and the second sprocket are connected by a chain. The second sprocket is coaxially connected with a gear, and the gear is meshed and connected with the rack. When the adjustment knob 2211 is rotated, the first sprocket also starts to rotate. The first sprocket drives the second sprocket to rotate through the chain, and the rotation of the second sprocket drives the gear to rotate. The rotation of the gear causes the rack to move in the through groove, thereby driving the second support plate 223 to slide, and finally realizing the adjustment of the position of the second support plate 223 on the first support plate 222.

[0065] Furthermore, the length dimension of the first support plate 222 is greater than the length dimension of the second support plate 223, so that the second support plate 223 has sufficient sliding space when sliding along the length direction of the first support plate 222.

[0066] Preferably, the first frame body 21 is provided with a fixing device for fixing the heating tool, and the heating tool is installed on the first frame body 21 through the fixing device. Preferably, the fixing device is a fixing clip, and the fixing clip clamps the heating tool on the first frame body 21.

[0067] As Figure 4 shown, in an embodiment of the present application, a scale line 2221 is provided on one side surface of the first support plate 222, and the scale line 2221 is arranged along the sliding direction of the second support plate 223.

[0068] After the mold body 1 is placed on the second support plate 223, the distance between the second support plate 223 and the heating tool is adjusted by rotating the adjustment knob 2211, and then the distance between the mold body 1 and the heating tool is adjusted to make the outer surface temperature of the test sample 3 reach a predetermined temperature. By providing the scale line 2221 on one side surface of the first support plate 222, it is possible to more conveniently, intuitively and quickly know the distance that the second support plate 223 moves along its moving direction.

[0069] Preferably, the length of the first support plate 222 is 220 - 320 mm, the width is 220 - 320 mm, and the thickness is 2 - 10 mm; in this embodiment, the heating tool is a gas spray gun

[0070] As Figure 4 shown, in an embodiment of the present application, a second limiting structure 2231 is provided on the end surface of the second support plate 223 away from the first support plate 222. The second limiting structure 2231 includes a plurality of second limiting members 2231a, and the second limiting members 2231a are L-shaped and are arranged at the corner positions of the second support plate 223.

[0071] When the mold body 1 is placed on the second support plate 223, the second limiting structure 2231 can limit the mold body 1, effectively preventing the mold body 1 from shifting or sliding due to the sliding of the second support plate 223, and ensuring the stability of the mold during the testing process.

[0072] Furthermore, the fireproof coating flame retardancy and heat insulation performance testing device further includes a base 4, and one end of the first frame body 21 and the end of the support column 221 away from the first support plate 222 are respectively connected to the base 4.

[0073] The base 4, as the supporting part of the mold, can realize the fixed installation of the support column 221 of the first frame body 21 and the second frame body 22, prevent the utility model from vibrating or displacing due to external forces, form a stable overall structure, and further improve the accuracy and reliability of the test results.

[0074] The working principle of the utility model: Apply the fireproof coating 31 to be tested at the position of the outer surface of the test sample 3 corresponding to the first opening 111, and then clamp the test sample 3 into the first limiting structure 12. At this time, the position of the fireproof coating 31 on the outer surface of the test sample 3 corresponds to the position of the first opening 111. The inner surface of the test sample 3 is connected to the first opening 111 through the first seal 142. Then, the test sample 3 is pressed against the first opening 111 by the clamps 141 on both sides of the housing 11, so as to form a sealed space inside the mold body 1. The first temperature probe is fixedly connected to the fixing structure 13 to measure the temperature of the outer surface of the sample 3 (i.e., the position of the fireproof coating 31). The second temperature probe and the third temperature probe pass through the second opening 112 and extend into the interior of the housing 11, and both are fixedly connected to the second seal 143, further ensuring the sealing performance inside the mold body 1 through the second seal 143. Among them, the second temperature probe is closely attached to the inner surface of the test sample 3 to measure the temperature of the inner surface of the test sample 3, and the third temperature probe measures the temperature inside the housing 11. Then, the heating tool is fixed on the first frame body 21, the mold body 1 is placed on the second frame body 22, and then the distance between the mold body 1 and the heating tool is adjusted through the adjusting knob 2211 so that the temperature of the outer surface of the test sample 3 reaches the predetermined temperature. Then, according to the test method, measure the temperatures of the outer surface of the test sample 3, the inner surface of the test sample 3 (i.e., the side of the test sample 3 away from the fireproof coating 31), and the interior of the mold body 1. Among them, the mold body 1 can simulate the temperature situation inside the battery case during combustion to determine whether the performance of the fireproof coating 31 meets the expectations.

[0075] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A testing device for the flame retardancy and heat insulation performance of a fireproof coating, characterized in that It includes a mold body (1) and a bracket structure (2); the mold body (1) includes a sealed housing (11), a first limiting structure (12), a fixing structure (13), and a sealing structure (14); both ends of the housing (11) are respectively provided with a first opening (111) and a second opening (112), and the first limiting structure (12), the fixing structure (13), and the sealing structure (14) are respectively arranged at one end of the housing (11) where the first opening (111) is provided. The first limiting structure (12) includes a plurality of first limiting members (121), and a clamping groove (1211) is provided between the first limiting member (121) and the housing (11), and the clamping groove (1211) is used for limiting and fixing a test specimen (3). The fixing structure (13) is arranged on one side of the housing (11), and a first temperature probe is connected to the fixing structure (13). The sealing structure (14) includes a fixture (141), a first seal (142), and a second seal (143), the fixture (141) is arranged on both sides of the housing (11), and the first seal (142) is arranged around the first opening (111). The second opening (112) is provided with the second seal (143), a second temperature probe and a third temperature probe respectively pass through the second seal (143) and extend into the housing (11), and the second temperature probe is arranged close to the inner surface of the test specimen (3). The bracket structure (2) includes a first frame body (21) and a second frame body (22) arranged at intervals, the first frame body (21) is used for fixing a heating tool; the second frame body (22) is used for placing the mold body (1), and one end of the mold body (1) provided with the first opening (111) is placed facing the first frame body (21).

2. The fireproof coating flame retardancy and heat insulation performance testing device according to claim 1, characterized in that The first opening (111) and the second opening (112) are respectively arranged at the central position of the housing (11), and the third temperature probe is arranged at the geometric center position inside the housing (11). The first opening (111) is rectangular, and the second opening (112) is circular.

3. The fireproof coating flame retardancy and heat insulation performance testing device according to claim 1, characterized in that The first limiting member (121) is in an L shape, and a plurality of the first limiting members (121) distributed along the height direction are respectively arranged on both sides of the first opening (111), and a supporting bottom plate (1212) is provided at the bottom end of the lowermost first limiting member (121).

4. The fireproof coating flame retardancy and heat insulation performance testing device according to claim 1, characterized in that, The end face of the mold body (1) provided with the first opening (111) is provided with a non-stick coating layer (113), and the material of the mold body (1) is aluminum alloy.

5. The fireproof coating flame retardancy and heat insulation performance testing device according to claim 4, characterized in that, A groove (1111) for placing the first seal (142) is arranged around the first opening (111).

6. The fireproof coating flame retardancy and heat insulation performance testing device according to claim 1, characterized in that, The fixing structure (13) is arranged on the side of the housing (11) close to the second frame body (22).

7. The fireproof coating flame retardancy and heat insulation performance testing device according to claim 1, characterized in that, The fixture (141) is symmetrically arranged on both sides of the first opening (111), and the fixture (141) is arranged between two of the first limiting members (121).

8. The fireproof coating flame retardancy and heat insulation performance testing device according to claim 1, characterized in that, The second frame body (22) includes a support column (221), a first support plate (222), and a second support plate (223). One side of the first support plate (222) is connected to the support column (221), and the other side of the first support plate (222) is slidably connected to the second support plate (223). The second support plate (223) is slidably disposed on the first support plate (222) in a direction close to or away from the first frame body (21). An adjustment knob (2211) is provided on the outer side wall of the support column (221), and the adjustment knob (2211) is in transmission connection with the second support plate (223). The adjustment knob (2211) is used to adjust the position of the second support plate (223) on the first support plate (222) so that the second support plate (223) slides close to and away from the first frame body (21).

9. The fireproof coating flame retardancy and heat insulation performance testing device according to claim 8, characterized in that, A scale line (2221) is provided on one side surface of the first support plate (222), and the scale line (2221) is arranged along the sliding direction of the second support plate (223).

10. The fireproof coating flame retardancy and heat insulation performance testing device according to claim 8, characterized in that, A second limiting structure (2231) is provided on the end surface of the second support plate (223) away from the first support plate (222). The second limiting structure (2231) includes a plurality of second limiting members (2231a). The second limiting members (2231a) are L-shaped, and the second limiting members (2231a) are arranged at the corner positions of the second support plate (223).

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