Device for testing flame retardance of polyurea material

Abstract

The utility model provides a polyurea material flame-retardant property testing device, which relates to the field of polyurea material testing, and comprises a detection box, support tables positioned on two sides are arranged in the detection box, a heat-insulating light-transmitting plate is fixedly mounted above the support tables in the detection box, and the heat-insulating light-transmitting plate is fixedly mounted above the support tables in the detection box. A combustion nozzle is arranged at the position, located below the supporting table, in the detection box, a fire extinguishing nozzle is arranged in the detection box, an air inlet is formed in one side of the detection box, a one-way conduction valve is arranged at the air inlet, an air suction unit is arranged on the other side of the detection box, and a camera is arranged at the position, located above the heat insulation light-transmitting plate, in the detection box. According to the device for testing the flame retardance of the polyurea material, the polyurea material to be detected is clamped below the two elastic clamping pieces, at the moment, the combustion nozzle works to burn the material to be detected within a certain time, and the camera shoots the burning process through the heat-insulating light-transmitting plate, so that the burning process can be recorded.

Description

A flame retardant performance testing device for polyurea materials Technical Field

[0001] This utility model relates to the field of polyurea material testing technology, specifically a device for testing the flame retardant properties of polyurea materials. Background Technology

[0002] Polyurea, as a polymer material, contains a large amount of carbon, hydrogen and oxygen in its molecular chain. It is easily flammable when exposed to open flame and produces toxic and harmful gases such as carbon monoxide and hydrogen cyanide during combustion. Therefore, it is necessary to modify it for flame retardancy and test its flame retardant effect for practical use.

[0003] CN211179684U describes a flame-retardant effect testing furnace for saturated polyester resin, belonging to the field of mechanical technology. It solves the technical problems of existing flame-retardant testing devices being inconvenient to use and difficult to observe the flame-retardant effect. This saturated polyester resin flame-retardant effect testing furnace includes a furnace body, characterized by several supporting legs fixed on the furnace body, an exhaust port at the upper end of the furnace body for discharging waste gas, an inlet port at the lower end of the furnace body for combustion gas intake, and a loading / unloading port on the furnace body for loading and unloading saturated polyester resin blocks. A combustion chamber is fixed inside the furnace body via a fixing frame, and a combustion mechanism is also provided on the combustion chamber. The combustion mechanism is connected to a gas pipe, which has a one-way structure to prevent gas backflow and a manual control valve for emergency shutdown. The furnace body also includes a conveying mechanism and a clamping mechanism. This technical solution has the advantages of being convenient to use and allowing for direct observation of the flame-retardant effect. However, it lacks reproducibility of the flame-retardant process and cannot specifically record the entire flame-retardant process. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a flame retardant performance testing device for polyurea materials, solving the problem of lack of recording of the flame retardant process mentioned in the background technology.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flame retardant performance testing device for polyurea materials, comprising a testing chamber, wherein the testing chamber has support platforms located on both sides, a heat-insulating and light-transmitting plate is fixedly installed above the support platforms inside the testing chamber, a combustion nozzle is located below the support platforms inside the testing chamber, a fire extinguishing nozzle is located inside the testing chamber, an air inlet is located on one side of the testing chamber, a one-way valve is located at the air inlet, an air intake unit is located on the other side of the testing chamber, and a camera is located above the heat-insulating and light-transmitting plate inside the testing chamber.

[0007] Furthermore, the front end of the testing box is provided with an openable door, and a sealing gasket is provided on the side of the door that contacts the testing box.

[0008] Furthermore, the combustion nozzle includes an injection nozzle, a piezoelectric igniter is provided on the outside of the injection nozzle, an infrared thermometer for detecting the temperature of the combustion product of the injection nozzle is provided inside the detection box, a conduit is connected to and passes through the air inlet end of the injection nozzle, the conduit extends to the outside of the detection box, a fuel bottle is provided on the outside of the detection box, and the fuel bottle is connected to and passes through the conduit.

[0009] Furthermore, the fire extinguishing nozzle includes multiple nozzles disposed inside the testing box. The multiple nozzles are connected and penetrate each other through a supply pipe. The supply pipe extends to the outside of the testing box. A fire extinguishing gas cylinder is disposed on the outside of the testing box. The fire extinguishing gas cylinder and the supply pipe are connected and penetrate each other.

[0010] Furthermore, a pressure gauge is connected and runs through the fuel cylinder and the conduit, as well as the fire extinguishing gas cylinder and the supply pipe.

[0011] Furthermore, elastic clips are provided on the upper sides of the support platform.

[0012] Furthermore, the intake unit includes an exhaust fan, the exhaust end of which is connected to and passes through an exhaust gas treatment pipe.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The flame retardant performance testing device for polyurea materials clamps the polyurea material to be tested under two elastic clips. At this time, the combustion nozzle works and burns the material to be tested for a certain period of time. The camera captures the burning process through the heat-insulating and light-transmitting plate, thus recording the burning process.

[0015] 2. The flame retardant performance testing device for polyurea materials includes multiple nozzles installed inside the testing chamber, which are connected and interconnected by a supply pipe extending to the outside of the testing chamber. A fire extinguishing gas cylinder is located on the outside of the testing chamber, connected and interconnected with the supply pipe. The fire extinguishing gas cylinder preferentially uses carbon dioxide, which extinguishes the fire by releasing carbon dioxide. When the carbon dioxide emission rate exceeds the air inlet rate, the oxygen inside the testing chamber is insufficient to support combustion, thus extinguishing the fire and avoiding the dampness inside the testing chamber caused by using water for fire extinguishing. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the structure of this utility model;

[0017] Figure 2 is a schematic diagram of the connection of the detection box of this utility model;

[0018] Figure 3 is a schematic diagram of the air intake unit connection of this utility model;

[0019] Figure 4 is a schematic diagram of the support platform connection of this utility model.

[0020] The components include: 1. Detection box; 2. Support platform; 3. Heat-insulating and light-transmitting panel; 4. Combustion nozzle; 5. Fire extinguishing nozzle; 6. Air inlet; 7. Suction unit; 8. Camera; 9. Door; 10. Sealing gasket; 401. Spray nozzle; 402. Piezoelectric igniter; 403. Infrared thermometer; 404. Conduit; 405. Fuel cylinder; 501. Nozzle; 502. Supply pipe; 503. Fire extinguishing gas cylinder; 11. Barometer; 12. Elastic clip; 701. Exhaust fan; 702. Exhaust gas treatment pipe; 13. One-way guide valve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Referring to Figures 1-4, a flame retardant performance testing device for polyurea materials includes a testing chamber 1. Inside the testing chamber 1 are support platforms 2 located on both sides. A heat-insulating and light-transmitting plate 3 is fixedly installed above the support platforms 2 inside the testing chamber 1. A combustion nozzle 4 is located below the support platforms 2 inside the testing chamber 1. A fire extinguishing nozzle 5 is also located inside the testing chamber 1. An air inlet 6 is located on one side of the testing chamber 1, and a one-way valve 13 is installed at the air inlet 6. An air intake unit 7 is located on the other side of the testing chamber 1. A camera 8 is located above the heat-insulating and light-transmitting plate 3 inside the testing chamber 1. This setup allows the camera 8 to record the combustion process within a unit of time, enabling repeated playback of the test. The air intake unit 7 ensures that the smoke and toxic gases generated during combustion are promptly discharged from the testing chamber 1.

[0023] The front end of the testing box 1 is provided with an openable door 9. A sealing gasket 10 is provided on the side of the door 9 that contacts the testing box 1. This arrangement facilitates the placement of the testing material and maintains a relative seal.

[0024] The combustion nozzle 4 includes a nozzle 401, a piezoelectric igniter 402 is provided on the outside of the nozzle 401, an infrared thermometer 403 is provided inside the detection box 1 to detect the temperature of the burning material of the nozzle 401, the air inlet end of the nozzle 401 is connected to and passes through a conduit 404, the conduit 404 extends to the outside of the detection box 1, a fuel bottle 405 is provided on the outside of the detection box 1, the fuel bottle 405 is connected to and passes through the conduit 404. With this configuration, a flame can be generated through the nozzle 401, thereby burning the detection material located above.

[0025] The fire extinguishing nozzle 5 includes multiple nozzles 501 installed inside the detection box 1. The multiple nozzles 501 are connected and connected through a supply pipe 502. The supply pipe 502 extends to the outside of the detection box 1. A fire extinguishing gas cylinder 503 is installed on the outside of the detection box 1. The fire extinguishing gas cylinder 503 is connected and connected to the supply pipe 502. The fire extinguishing gas cylinder 503 preferentially uses carbon dioxide gas. By releasing carbon dioxide, it can achieve the effect of extinguishing fire. When the carbon dioxide emission rate is greater than the air entry rate, the oxygen in the detection box 1 is insufficient to support combustion.

[0026] A pressure gauge 11 is connected and runs through the fuel cylinder 405 and the conduit 404, as well as the fire extinguishing gas cylinder 503 and the supply pipe 502. By setting the pressure gauge 11, the flow rate of the gas can be detected, thereby avoiding the problem of gas being emptied without being aware of it.

[0027] Elastic clips 12 are provided on the upper sides of both sides of the support platform 2, which can fix the placed polyurea material.

[0028] The intake unit 7 includes an exhaust fan 701, the exhaust end of which is connected to and passes through a tail gas treatment pipe 702. This configuration allows the gas to be extracted from the detection box 1 in time when the material is burning and treated through the tail gas treatment pipe 702, thus preventing the emission of toxic gases.

[0029] In use, the polyurea material to be tested is clamped under two elastic clips 12. At this time, the combustion nozzle 4 works and burns the material to be tested for a certain period of time. The camera 8 captures the burning process through the heat-insulating and light-transmitting plate 3, thus recording the burning process. During burning, it is necessary to check whether the flame temperature in contact with the test object by the infrared thermometer 403 meets the standard temperature. When the unit time ends or the material is obviously burning, the fire extinguishing nozzle 5 works and reduces the oxygen content by spraying carbon dioxide outward, thus extinguishing the fire. During the combustion process, the exhaust fan 701 and the exhaust gas treatment pipe 702 can promptly discharge the toxic gas and smoke generated by the combustion from the test box 1.

[0030] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flame retardant performance testing device for polyurea materials, comprising a testing chamber (1), characterized in that: The inside of the test box (1) is provided with support platforms (2) on both sides. A heat-insulating and light-transmitting plate (3) is fixedly installed inside the test box (1) above the support platforms (2). A combustion nozzle (4) is provided inside the test box (1) below the support platforms (2). A fire extinguishing nozzle (5) is provided inside the test box (1). An air inlet (6) is provided on one side of the test box (1). A one-way valve (13) is provided at the air inlet (6). An air intake unit (7) is provided on the other side of the test box (1). A camera (8) is provided inside the test box (1) above the heat-insulating and light-transmitting plate (3).

2. The device for testing the flame retardant performance of a polyurea material according to claim 1, characterized in that: The front end of the testing box (1) is provided with an openable door (9), and a sealing gasket (10) is provided on the side of the door (9) that contacts the testing box (1).

3. The device for testing the flame retardant properties of a polyurea material according to claim 1 or 2, characterized in that The combustion nozzle (4) includes a nozzle (401), a piezoelectric igniter (402) is provided on the outside of the nozzle (401), an infrared thermometer (403) for detecting the temperature of the combustor of the nozzle (401) is provided inside the detection box (1), a conduit (404) is connected to and passes through the air inlet end of the nozzle (401), the conduit (404) extends to the outside of the detection box (1), a fuel bottle (405) is provided on the outside of the detection box (1), and the fuel bottle (405) is connected to and passes through the conduit (404).

4. The device for testing the flame retardant performance of a polyurea material according to claim 3, characterized in that: The fire extinguishing nozzle (5) includes multiple nozzles (501) installed inside the test box (1). The multiple nozzles (501) are connected and connected through a supply pipe (502). The supply pipe (502) extends to the outside of the test box (1). A fire extinguishing gas cylinder (503) is installed on the outside of the test box (1). The fire extinguishing gas cylinder (503) and the supply pipe (502) are connected and connected.

5. The flame retardant performance testing device for polyurea materials according to claim 4, characterized in that: A pressure gauge (11) is connected and passes through the fuel cylinder (405) and the conduit (404), as well as the fire extinguishing gas cylinder (503) and the supply pipe (502).

6. The device for testing the flame retardant properties of a polyurea material according to any one of claims 4 or 5, characterized in that: Elastic clips (12) are provided on the upper sides of the support platform (2).

7. The device for testing the flame retardant properties of a polyurea material according to claim 6, characterized in that: The intake unit (7) includes a blower (701), and the exhaust end of the blower (701) is connected to and passes through an exhaust gas treatment pipe (702).

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