A device and method for measuring the gas generation amount and gas generation rate of a foaming agent

Abstract

The present invention provides a device and method for measuring the gas emission amount and gas emission rate of a foaming agent. The main problem in the prior art is the lack of continuous and accurate measurement of the gas emission amount and gas emission rate of a chemical foaming agent at a pressure above normal pressure. The device includes a gas emission system, a foaming gas storage system, a pressure regulating system, a gas measurement system, a display terminal and a temperature control station. During the period when the foaming agent decomposes to produce gas, the pressure in the internal cavity of the gas emission system increases, and the gas pushes the pressure regulating system upward. The gas measurement system monitors the upward process of the pressure regulating system, and can obtain a displacement-time image and a speed-time image, which are then converted into gas emission amount-time and gas emission rate-time images. This device has a simple structure, is safe and convenient to operate, and can continuously and accurately measure the gas emission amount and gas emission rate of a foaming agent at a given temperature, normal pressure and high pressure above normal pressure, and has great practical value.

Description

Technical Field

[0001] The invention relates to the field of chemical foaming, and in particular to a device and method for measuring the gas generation amount and gas generation rate of a foaming agent, which can measure the gas generation situation under any temperature and pressure. Background Art

[0002] The chemical foaming method is a commonly used method for foaming foam plastics, which generates foaming gas by thermal decomposition of the foaming agent. For chemical foaming agents, the two important technical indicators that affect the foaming effect are decomposition temperature and gas emission. The decomposition temperature of the foaming agent should be adapted to the optimal foaming degree of the polymer to be foamed; the greater the gas emission of the foaming agent, the higher the foaming efficiency, and the less its dosage can be used. In addition, the decomposition rate of the foaming agent is affected by temperature and pressure, and has a reverse effect on the foaming process. If the gas emission and gas emission rate of the foaming agent at any temperature and pressure are known, it provides convenience and reference for matching the foaming agent with the polymer to be foamed and setting process parameters. Wang Liwen et al. disclosed a plastic gas emission detection device in the Chinese utility model patent CN213875334U, which uses the U-tube drainage method to directly read the gas volume. The device requires manual reading, can only measure the gas emission under normal pressure, and cannot derive the gas emission rate of the process. In addition, the gas may be partially soluble in water, resulting in inaccurate measurement. Feng Qingyu et al. disclosed a foaming agent gas emission tester in Chinese utility model patent CN 209542352 U. The tester can measure the gas emission at up to 400°C using a constant temperature box and can display the time-temperature-gas emission relationship curve in real time, but cannot measure the gas emission and gas emission rate under variable pressure conditions. Summary of the invention

[0003] In order to solve the problems not touched upon by the prior art, the present invention proposes a device and method for measuring the gas emission amount and gas emission rate of a foaming agent under a given temperature and pressure, which can measure the gas emission amount of the foaming agent in real time under any given high temperature and high pressure conditions, and can continuously and accurately measure the gas emission rate of the foaming process.

[0004] In order to achieve the purpose of the present invention, the present invention provides a device for measuring the gas generation amount and gas generation rate of a foaming agent, including a gas generation system, a foaming gas storage system, a pressure regulating system, a gas measurement system, a display terminal and a temperature control console.

[0005] The gas generating system comprises a gas generating housing, a feeding port and a first heating component arranged in the gas generating housing, the feeding port is used to provide a reaction site for the foaming agent, and the first heating component is arranged near the feeding port, wherein an aluminum crucible can be placed on the feeding port for containing and replacing samples;

[0006] A gas collecting shell of the foaming gas storage system and a gas collecting inner lining layer and a second heating assembly arranged in the gas collecting shell, the gas collecting shell is fixedly connected to the gas generating shell, the gas collecting inner lining layer is communicated with the feeding port, and the second heating assembly is arranged close to the gas collecting inner lining layer;

[0007] The pressure regulating system includes a piston assembly and a weight tray. The piston assembly includes a piston rod and a piston. The piston is dynamically sealed with the gas collecting liner. The free end of the piston rod is fixedly connected with the weight tray. The weight tray is used to place the weight.

[0008] The gas measurement system includes a displacement sensor for measuring the displacement of the weight, and the displacement sensor is electrically connected to the display terminal via a signal converter;

[0009] The temperature control platform is connected to both the first heating component and the second heating component.

[0010] Furthermore, the gas generating system further comprises a temperature sensor and a pressure sensor, wherein the temperature sensor is used to detect in real time the temperature of the gas released after the foaming agent is decomposed, and the pressure sensor is used to detect the pressure in the gas generating system. Furthermore, the first heating assembly comprises a first heating coil and a heat-conducting layer, wherein the first heating coil is electrically connected to the temperature control station, the heat-conducting layer is sealed and connected to the feeding port, and the first heating coil is arranged around the heat-conducting layer to heat the heat-conducting layer.

[0011] Furthermore, the gas generating system further comprises a first heat insulating member, which is arranged between the heat conducting layer and the gas generating shell.

[0012] Furthermore, the gas generating system further comprises a protective gas valve, through which the protective gas valve and the gas input pipeline are used to introduce the protective atmosphere into the feeding port. Such an arrangement can reduce the gas volume measurement error.

[0013] Furthermore, the gas generating system also includes a deflation valve for relieving the pressure of the gas generating system.

[0014] Furthermore, the second heating assembly includes a second heating coil, which is distributed around the air collecting lining layer and is electrically connected to the temperature control station.

[0015] Furthermore, a sealing ring is provided between the piston in the piston assembly and the gas collecting liner.

[0016] Furthermore, the device also includes a bracket, and the displacement sensor includes a displacement fixed end and a displacement movable end arranged opposite to the displacement fixed end, the displacement fixed end is fixedly arranged on the bracket, and the displacement movable end is fixedly arranged on the weight tray.

[0017] Furthermore, it also includes a counterweight, which is connected to the weight tray through a fixed pulley.

[0018] The present invention also provides a method for measuring the gas generation amount and gas generation rate of a foaming agent, the method comprising the steps of:

[0019] Weigh a foaming agent sample with a mass of m0 and place it in the feed port. Set the experimental pressure to p. The inner diameter cross-sectional area of ​​the gas collecting lining layer of the foaming gas storage device is s. p*s=(M+m)*g+f, where g is the local gravity acceleration, f is the friction between the piston assembly and the gas collecting lining layer, and m is the mass of the weight. The mass m of the weight can be obtained according to the experimental pressure p value. Place the weight on the weight tray;

[0020] After the sample and the weight are placed, the piston assembly is at the lower limit position, and after the displacement sensor is adjusted, the reading on the display is 0. ;

[0021] Introduce protective atmosphere into the feeding port;

[0022] Use the temperature control table to set the temperature T required for foaming;

[0023] The foaming agent sample is gradually decomposed by heat to produce gas, which pushes the piston assembly and the weight upward. The display terminal shows the displacement and speed of the moving object over time. When the foaming agent is completely decomposed, a complete image is obtained.

[0024] The gas generation amount-time image can be obtained according to the displacement-time image, and the gas generation rate-time image can be obtained according to the speed-time image. The gas generation amount-time image and the gas generation rate-time image can be used to know the gas generation amount and gas generation rate of the foaming agent at any time under the temperature and pressure, and the gas generation of the foaming agent corresponding to the minimum p=(Mg+f) / s (p>0.1Mpa) can be measured;

[0025] When it is necessary to measure the foaming condition of the foaming agent at normal pressure and pressure above normal pressure, a counterweight with a mass of Mx is set, and a heavy object is placed on the heavy object tray, so that the foaming condition of the foaming agent at normal pressure and pressure above normal pressure can be measured.

[0026] Compared with the prior art, the present invention can achieve at least the following technical effects:

[0027] 1. The device and method provided by the present invention can measure the gas volume and gas rate of the foaming agent under any required temperature and pressure conditions. The data image is continuous and uninterrupted, and the measurement is more accurate. By adjusting the temperature and changing the weight, the environmental conditions of the foaming system can be adjusted. The operation is convenient, safe and efficient.

[0028] 2. This device consists of a gas generation system, a foaming gas storage system, a pressure regulating system, a gas measurement system, a temperature control station and a display terminal. It has a clear structure, an orderly layout, and is safe and convenient to operate. The temperature control system can be accurate to 0.1°C, and the pressure regulating system can be accurate to 0.1MPa. It can not only directly read the gas generation volume, but also calculate the gas generation rate function image based on the velocity function image, with accurate and efficient measurement. In addition, with the help of this device, the foaming conditions and foaming properties of the foaming agent can be measured in advance, providing data support for matching the foaming agent to be foamed and setting the optimal process parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the connection structure of a gas generating system, a foaming gas storage system, a pressure regulating system and a gas measuring system in a device is provided for an embodiment of the present invention.

[0030] Figure 2 A schematic diagram of the positional relationship among a temperature control station, a signal converter and a display terminal in a device is provided for an embodiment of the present invention.

[0031] Figure 3 The present invention is a schematic diagram of the overall structure of a device for measuring the gas generation amount and gas generation rate of a foaming agent provided by one embodiment of the present invention.

[0032] In the figure, 1- bracket, 2- feeding port, 3- first heating coil, 4- temperature sensor, 5- crucible, 6- sealing ring, 7- heat conductive layer, 8- gas generating shell, 9- first thermal insulation member, 10- nitrogen delivery pipe, 11- nitrogen inlet valve, 12- pressure relief valve, 13- pressure sensor, 14- sealing ring, 15- sealing ring, 16- piston assembly, 17- gas collecting lining layer, 18- second heating coil, 19- second thermal insulation member, 20- gas collecting shell, 21- linear bearing, 22- displacement fixed end, 23- displacement moving end, 24- weight tray, 25- weight, 26- temperature control table, 27- signal converter, 28- display terminal, 29- counterweight. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] See also Figure 1-Figure 3The present invention provides a device for measuring the gas generation amount and gas generation rate of a foaming agent, which includes a bracket 1, a gas generation system, a foaming gas storage system, a pressure regulating system, a gas measurement system, a temperature control station and a display terminal.

[0036] Among them, see Figure 1 , the gas generating system is arranged on the support 1, and the gas generating system comprises a gas generating housing 8, a feeding port 2 and a first heating component arranged in the gas generating housing 8. Among them, the gas generating housing 8 is connected with a protective gas valve 11 and a pressure relief valve 12, and the protective gas can be introduced into the feeding port 2 through the protective gas valve 11. The feeding port 2 is located inside the gas generating housing 8 and a crucible 5 can be placed in the feeding port 2. The first heating component is arranged near the feeding port 2 to heat the foaming agent in the feeding port 2. A temperature sensor 4 and a pressure sensor 13 are installed in the feeding port and above the crucible 5 to monitor the gas temperature and the internal pressure of the gas generating system in real time. The sample decomposition is gradual and step-like, and the actual temperature of the sample can better reflect the gas generation of the foaming agent from the initial decomposition temperature to the set temperature; secondly, it avoids the measurement difference of the actual decomposition temperature of the foaming agent caused by uneven temperature in the gas generating system. The pressure sensor can observe the internal pressure change and the pressure change after the foaming gas is generated when the protective atmosphere is pre-filled, and can also detect whether there is a leak.

[0037] The protective gas introduced through the protective gas valve 11 is an inert and stable gas that will not react with the reactants and will not corrode the instrument.

[0038] The foaming gas storage system includes a gas collecting shell 20, a gas collecting lining layer 17 and a second heating assembly arranged in the gas collecting shell 20. The gas collecting shell 20 is fixedly connected to the gas generating shell 8, the gas collecting lining layer 17 is connected to the feed port 2, and the second heating assembly is arranged near the gas collecting lining layer 17.

[0039] In this embodiment, a first heat insulating member 9 is provided between the heat conducting layer 7 and the gas generating shell 8, and a second heat insulating member 19 is provided between the gas collecting lining layer 17 and the gas collecting shell 20. Thus, the heat can be fully utilized and the heat radiation can be isolated to protect the staff.

[0040] The pressure regulating system includes a piston assembly 16, a weight tray 24 and a weight 25. The piston assembly 16 includes a piston rod and a piston fixed at one end of the piston rod. Three sealing rings 15 are installed on the piston to form a dynamic seal with the gas collecting lining 17. The other end of the piston rod is connected to the weight tray 24 by welding. The weight 25 is placed on the weight tray 24. The piston rod passes through a linear bearing 21 fixed on the bracket 1, and the linear bearing 21 plays a guiding and stabilizing role in the movement of the piston rod.

[0041] In the present invention, the gas measurement system includes a displacement sensor and a signal converter 27, the displacement sensor includes a displacement fixed end 22 and a displacement movable end 23 arranged opposite to the displacement fixed end 22, the displacement fixed end 22 is fixedly connected to the bracket 1, the displacement movable end 23 is fixedly installed under the heavy object tray 24, and the displacement sensor is electrically connected to the signal converter 27 and the display terminal 28 in sequence. And the values ​​of the temperature sensor 4 and the pressure sensor can be displayed on the display terminal 28.

[0042] The temperature control station 26 is used to adjust the temperature of the foaming environment, and the first heating coil 3 and the second heating coil 18 are electrically connected to the temperature control station 26. The temperature control station 26 keeps the temperature of the gas in the gas generation system and the foaming gas storage system at the temperature during foaming through the heating coils.

[0043] The piston forms a reliable dynamic seal with the gas collecting lining 17 of the foaming gas storage device through the sealing ring 15. The top of the piston rod 16 is connected to the weight tray 24 by welding. When unloaded, the mass of the piston assembly 16 and the weight tray is M. According to the measurement standard of sliding friction, the friction f between the piston assembly 16 and the gas collecting lining 17 of the foaming gas storage system is measured. According to the experimental pressure, the required weight mass is converted. After the foaming agent decomposes to produce gas, the gas enters the foaming gas storage system, and the pressure in the foaming gas storage system increases, thereby pushing the piston rod and the weight upward. The displacement time image and speed time image of the moving object can be observed from the display terminal 28.

[0044] Example 2

[0045] Based on Example 1, the first heating component includes a first heating coil 3 and a heat-conducting layer 7. The first heating coil 3 is electrically connected to the temperature control table. The heat-conducting layer 7 is screwed to the feeding port 2 through a sealing ring. The first heating coil 3 is distributed around the heat-conducting layer 7 for uniformly heating the heat-conducting layer 7.

[0046] The second heating assembly includes a second heating coil 18 . The gas collecting shell 20 is fixed to the gas generating shell 8 via its flange structure. The gas collecting lining layer 17 is screwed to the heat conducting layer 7 via a sealing ring 14 . The second heating coil 18 is distributed around the gas collecting lining layer 17 .

[0047] There is a first insulation member 9 made of asbestos between the heat-conducting layer 7 and the gas-generating shell 8, and a second insulation member 19 made of asbestos is provided between the gas-collecting lining layer 17 and the gas-collecting shell 20. Asbestos serves to isolate heat from radiating outwards, and it is understandable that in other embodiments, the insulation member may also be made of other insulation materials that have a heat-insulating effect.

[0048] The protective atmosphere introduced is nitrogen, which is relatively easier to obtain and has a lower cost.

[0049] The piston and the piston rod in the piston assembly are designed as one piece.

[0050] The displacement sensor adopts a linear displacement sensor.

[0051] The gas collecting lining 17 of the foaming gas storage system is made of alloy steel, and the effective inner diameter cross-sectional area is 1 square centimeter. The piston rod is made of alloy steel, and the sealing ring 15 is made of cast iron.

[0052] Example 3

[0053] On the basis of Example 2, when the aforementioned device is used to measure the gas generation amount and gas generation rate of the foaming agent at a given temperature and pressure, the following steps can be followed:

[0054] ① Weigh a foaming agent sample with a mass of m0 and place it in a crucible 5 placed in the feed port 2. Set the experimental pressure to p, and the effective inner diameter cross-sectional area of ​​the gas collecting inner lining 17 of the foaming gas storage device to s (s = 1 cm 2 ), p*s=(M+m)*g+f, g is the local gravity acceleration, m is the weight mass. The weight mass m can be obtained according to the experimental pressure p value. The homogeneous weight is placed in the center of the weight tray 15.

[0055] ② After the sample and the heavy object are placed, the piston rod is at the lower limit position (the starting position of the effective moving space of the piston rod is the lower limit position). After the linear displacement sensor is calibrated, the reading on the display screen is 0.

[0056] ③Open the protective gas valve 11 and introduce nitrogen into the reaction device until the piston rod moves up a small distance. That is, the protective atmosphere is filled in advance to occupy the cavity volume in the device to reduce the measurement error of the actual released gas volume.

[0057] ④ Use the temperature control table to set the temperature required for foaming. After the predetermined temperature is set on the temperature control table, the first heating coil 3 and the second heating coil 18 heat the gas generation system and the foaming gas storage system to the predetermined temperature respectively, and then keep the temperature unchanged. The first heating coil heats the gas generation system, and the temperature of the sample in the feeding port increases with the increase of the temperature of the first heating component, and finally reaches the predetermined temperature until the decomposition is completed;

[0058] ⑤ The foaming agent is gradually decomposed by heat to produce gas, which pushes the piston assembly 16 and the weight upward. The signal converter 27 converts the electrical signals collected by each sensor into digital signals and outputs them. The display terminal 28 displays the displacement and speed of the moving object over time. When the foaming agent is completely decomposed, a complete image can be obtained.

[0059] ⑥ According to the displacement-time image and volume formula, the conversion (V = S*h, S is the effective cross-sectional area of ​​the inner diameter of the gas collection liner 1cm 2, h is the displacement of the piston assembly 16) the gas generation volume-time image can be obtained, and the gas generation rate-time image can be obtained by conversion according to the speed-time image (gas generation rate dV / dt=S*(dh / dt)=S*v, v can be obtained from the speed-time image), from which the gas generation volume and gas generation rate of the foaming agent at any time under the temperature and pressure can be known.

[0060] ⑦ By adjusting the temperature and the mass of the weight, that is, the experimental pressure, a database of the foaming properties of the foaming agent can be obtained, which has the value of providing accurate and convenient reference for actual production.

[0061] Since a standard atmospheric pressure is 1cm 2 The effective area of ​​the piston assembly 16 generates a force of 10 Newtons, corresponding to a weight of about 1 kg. The mass M of the piston assembly 16 and the weight tray is obviously greater than 1 kg, so the embodiment 1 can only measure the gas emission of the foaming agent corresponding to p = (Mg + f) / s (p> 0.1Mpa) at the lowest.

[0062] Example 4

[0063] The difference between this embodiment and embodiment 3 is:

[0064] This embodiment can measure the foaming conditions of the foaming agent at normal pressure and pressures above normal pressure.

[0065] like Figure 3 As shown, a fixed pulley block is used to add a counterweight 29, whose mass is M x , the weight of the counterweight 29 is a fixed value, and the weight on the weight tray 24 is a variable.

[0066] When measuring the foaming of the foaming agent under normal pressure, M x *g=M*g+f, that is, M x =(M*g+f) / g. On this basis, by adding more weights to the weight tray 24, the foaming condition of the foaming agent under the corresponding pressure of 0.1Mpa to p=(Mg+f) / s (p>0.1Mpa) can be measured. In addition, when the mass of the weight 25 on the weight tray is (M*g+f) / g, that is, the same as Example 3, the role of the counterweight 29 at this time is to balance M*g+f, and then put the weight 25 on the weight tray, and the value of the weight 25 increases from zero. That is, the foaming condition under normal pressure and above is measured.

[0067] The device provided by the embodiment of the present invention is convenient and safe to operate, has low manufacturing cost, and can measure the gas generation volume and gas generation rate under actual working conditions of high temperature and high pressure, which is conducive to the rapid matching of the foamed material and the foaming agent and provides necessary reference for the setting of process parameters.

[0068] The device, method and preferred embodiment proposed in the embodiment of the present invention will provide convenient and effective assistance for actual production, provide reference for matching the characteristics of the foaming agent and the object to be foamed and the selection of process parameters, and make up for the shortcomings of the existing foaming characteristic measurement method of the foaming agent. For the control of the foaming pressure, improvements such as the use of the lever principle, electronic control, etc. are considered to be within the scope of protection of the invention.

Claims

1. A method for measuring the gas generation amount and gas generation rate of a foaming agent, characterized in that: The method is implemented based on a device for measuring the gas generation amount and gas generation rate of a foaming agent, the device comprising a gas generation system, a foaming gas storage system, a pressure regulating system, a gas measurement system, a display terminal and a temperature control console; The gas generating system comprises a gas generating housing (8), a feeding port (2) and a first heating component arranged in the gas generating housing (8), the feeding port (2) being used to provide a place for the foaming agent to react, and the first heating component being arranged close to the feeding port (2); The foaming gas storage system comprises a gas collecting shell (20), a gas collecting inner lining layer (17) and a second heating component arranged in the gas collecting shell (20), the gas collecting shell (20) is fixedly connected to the gas generating shell (8), the gas collecting inner lining layer (17) is in communication with the feed port (2), and the second heating component is arranged close to the gas collecting inner lining layer (17); The pressure regulating system comprises a piston assembly (16) and a weight tray (24), wherein the piston assembly (16) comprises a piston rod and a piston, the piston is dynamically sealed with the gas collecting liner (17), the free end of the piston rod is fixedly connected to the weight tray (24), and the weight tray (24) is used to place a weight (25); The gas measurement system comprises a displacement sensor for measuring the displacement of a weight (25), and the displacement sensor is electrically connected to a display terminal via a signal converter (27); The temperature control table is connected to both the first heating component and the second heating component; The method comprises the steps of: A foaming agent sample with a mass of m0 is weighed and placed in the feeding port (2). The experimental pressure is set to p. The inner diameter cross-sectional area of ​​the gas collecting inner lining layer (17) of the foaming gas storage system is s. p*s=(M+m)*g+f, where M is the mass of the piston assembly (16) and the weight tray (24), g is the local gravity acceleration, f is the friction force between the piston assembly (16) and the gas collecting inner lining layer (17), and m is the mass of the weight. The mass m of the weight can be calculated based on the experimental pressure p value. The weight (25) is placed on the weight tray (24); After the sample and the weight (25) are placed, the piston assembly (16) is in the lower limit position, and the displacement sensor is adjusted; Introducing a protective atmosphere into the feed port (2); Use the temperature control table to set the temperature T required for foaming; The foaming agent sample is gradually decomposed by heat to generate gas, and the gas pushes the piston assembly (16) and the weight upward, and the display terminal displays the displacement and speed changes of the moving object over time. When the foaming agent is completely decomposed, a complete image is obtained; The gas generation volume-time image can be obtained from the displacement-time image, and the gas generation rate-time image can be obtained from the speed-time image. The gas generation volume and gas generation rate of the foaming agent at any time under the temperature and pressure can be known through the gas generation volume-time image and the gas generation rate-time image, and the gas generation of the foaming agent corresponding to the lowest p=(Mg+f) / s can be measured, and p>0.1Mpa; When it is necessary to measure the foaming condition of the foaming agent at normal pressure and pressure above normal pressure, a counterweight (29) is provided, the mass of the counterweight is Mx, and a weight (25) is placed on the weight tray (24), so that the foaming condition of the foaming agent at normal pressure and pressure above normal pressure can be measured.

2. The method for measuring the gas generation amount and gas generation rate of a foaming agent according to claim 1, characterized in that: In the device for measuring the gas generation amount and gas generation rate of the foaming agent, the gas generation system also includes a temperature sensor and a pressure sensor. The temperature sensor is used to detect the temperature of the gas released after the foaming agent decomposes, and the pressure sensor is used to detect the pressure in the gas generation system.

3. The method for measuring the gas generation amount and gas generation rate of a foaming agent according to claim 1, characterized in that: In the device for measuring the amount and rate of gas generation of a foaming agent, the first heating component comprises a first heating coil (3) and a heat-conducting layer (7), the first heating coil (3) is electrically connected to the temperature control table, the heat-conducting layer (7) is sealed to the feeding port (2), and the first heating coil (3) is arranged around the heat-conducting layer (7) to heat the heat-conducting layer (7).

4. A method for measuring the gas generation amount and gas generation rate of a foaming agent according to claim 3, characterized in that: In the device for measuring the amount and rate of gas generation of a foaming agent, the gas generation system further comprises a first heat insulating member (9), wherein the first heat insulating member (9) is arranged between the heat conducting layer (7) and the gas generation housing (8).

5. The method for measuring the gas generation amount and gas generation rate of a foaming agent according to claim 1, characterized in that: In the device for measuring the amount and rate of gas generation of a foaming agent, the gas generation system further comprises a protective gas valve (11), through which a protective gas valve (11) is used to introduce a protective atmosphere into the feed port (2).

6. The method for measuring the gas generation amount and gas generation rate of a foaming agent according to claim 1, characterized in that: In the device for measuring the amount and rate of gas generation of a foaming agent, the second heating component comprises a second heating coil (18), the second heating coil (18) is distributed around the gas collecting lining layer (17), and the second heating coil (18) is electrically connected to the temperature control station.

7. The method for measuring the gas generation amount and gas generation rate of a foaming agent according to claim 1, characterized in that: In the device for measuring the amount and rate of gas generation of a foaming agent, a sealing ring (15) is provided between the piston in the piston assembly (16) and the gas collecting inner lining layer (17).

8. The method for measuring the gas generation amount and gas generation rate of a foaming agent according to claim 1, characterized in that: The device for measuring the amount and rate of gas generation of a foaming agent further comprises a bracket (1), the displacement sensor comprising a displacement fixed end (22) and a displacement movable end (23) arranged opposite to the displacement fixed end (22), the displacement fixed end (22) being fixedly arranged on the bracket (1), and the displacement movable end (23) being fixedly arranged on a weight tray (24).

9. A method for measuring the gas generation amount and gas generation rate of a foaming agent according to any one of claims 1 to 8, characterized in that: The device for measuring the amount and rate of gas generation of a foaming agent further comprises a counterweight (29), wherein the counterweight (29) is connected to the weight tray (24) via a fixed pulley.

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