Safety evaluation method, device and storage medium for heated cigarette filter materials

Abstract

The present invention discloses a method for evaluating the safety of heated cigarette filter materials. The method comprises: determining the melting temperature of the filter material using a synchronous thermal analyzer, an oven, and an electron microscope scanner; evaluating the cooling effect of the filter material using a temperature measuring probe, the oven, and the melting temperature; when the cooling effect of the filter material is satisfactory, heat treating the filter material according to the melting temperature to obtain volatile substances volatilized from the filter material; and detecting the volatile substances using a mass spectrometer to evaluate the safety of the filter material. The present invention also discloses a safety evaluation device and a storage medium. The present invention can accurately evaluate the safety of heated cigarette filter materials.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling materials, and in particular to a method, device and storage medium for safety evaluation of heated cigarette filter materials. Background Art

[0002] Currently, a large number of studies have shown that nicotine and most flavor components can be released from tobacco and transferred into the smoke at relatively low temperatures (250-500°C). Excessively high temperatures not only increase the types and content of harmful components in the smoke, but also convert flavor components into harmful substances. Therefore, if the temperature of cigarettes is reduced to below 500°C, the so-called "heating but not burning tobacco", many harmful components in the smoke can be significantly reduced, while the flavor components are relatively less affected. Some flavor components may even increase due to reduced pyrolysis. Therefore, heat-not-burn cigarettes came into being.

[0003] Compared with traditional cigarettes, heat-not-burn cigarettes are shorter in length, and the high-temperature smoke spends less time passing through the cigarette, requiring suitable materials to cool the high-temperature smoke. Chinese patent CN107981417A discloses an aerosol-generating article with an aerosol cooling element from Philip Morris, wherein the aerosol cooling element includes a sheet composed of free polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), acetate fiber (CA), and aluminum foil. Patent CN108523216A discloses a polylactic acid tow filter rod that can reduce smoke temperature and has low absorption resistance, and its corresponding preparation method; Chinese patent CN 108201169A discloses a cooling unit formed by embossing and pleating a composite sheet of a polymer film and cellulose paper, wherein the polymer film is mainly a polylactic acid film, a polyethylene film, a polypropylene film, etc. The above patents all solve the problem of cooling high-temperature smoke. However, the prior art does not evaluate the safety of cooling materials and detect whether the cooling materials volatilize harmful substances. Summary of the Invention

[0004] The main purpose of the present invention is to provide a method, device and storage medium for evaluating the safety of heated cigarette filter materials, aiming to accurately evaluate the safety of heated cigarette filter materials.

[0005] To achieve the above objectives, the present invention provides a method for evaluating the safety of heated cigarette filter materials, comprising the following steps:

[0006] Determining the melting temperature of the filter material by using a simultaneous thermal analyzer, an oven, and an electron microscope scanner;

[0007] evaluating the cooling effect of the filter material by using a temperature probe, the oven, and the melting temperature;

[0008] When the cooling effect of the filter material is satisfactory, heat-treating the filter material according to the melting temperature to obtain volatile substances volatilized from the filter material;

[0009] The safety of the filter material is evaluated by detecting the volatile substances using a mass spectrometer.

[0010] Optionally, the step of determining the melting temperature of the filter material by using a simultaneous thermal analyzer, an oven, and an electron microscope scanner comprises:

[0011] Obtaining the phase transition temperature of the filter material by a synchronous thermal analyzer;

[0012] determining a plurality of oven detection temperatures according to the phase change temperature;

[0013] Obtaining an electron microscope image of the filter material at each oven test temperature by an electron microscope scanner;

[0014] The melting temperature of the filter material is determined based on a plurality of the electron microscope images.

[0015] Optionally, the step of determining the melting temperature of the filter material based on the plurality of electron microscope images includes:

[0016] sorting the plurality of electron microscope images from low to high according to the oven detection temperatures corresponding to the electron microscope images;

[0017] Detecting the similarity between two adjacent electron microscope images;

[0018] If the similarity between the N-1th electron microscope image and the Nth electron microscope image is greater than the first preset threshold and the similarity between the Nth electron microscope image and the N+1th electron microscope image is less than the second preset threshold, the oven detection temperature corresponding to the N+1th electron microscope image is determined as the melting temperature of the filter material.

[0019] Optionally, the step of obtaining the phase transition temperature of the filter material by a synchronous thermal analyzer includes:

[0020] Sending a phase change temperature acquisition instruction to the synchronous thermal analyzer;

[0021] receiving a phase change temperature change curve returned by the synchronous thermal analyzer according to the phase change temperature acquisition instruction;

[0022] The phase transition temperature is calculated based on the phase transition temperature change curve.

[0023] Optionally, the step of obtaining an electron microscope image of the filter material at each oven testing temperature by using an electron microscope scanner includes:

[0024] Send electron microscope image acquisition instructions to the electron microscope scanner;

[0025] Receive the electron microscope image returned by the electron microscope scanner according to the electron microscope image acquisition instruction, wherein the electron microscope image is an image of the filter material scanned by the electron microscope scanner after being placed in the oven for a preset time at each oven detection temperature.

[0026] Optionally, the step of evaluating the cooling effect of the filter material by using a temperature measuring probe, the oven, and the melting temperature includes:

[0027] Obtaining a temperature change curve of the filter material inserted into the oven through a temperature measuring probe;

[0028] determining a correction temperature according to the phase change temperature and the temperature change curve;

[0029] Correcting the melting temperature according to the correction temperature to obtain the thermal shock temperature measured by the temperature measuring probe;

[0030] obtaining, by the temperature measuring probe, a temperature curve to be evaluated of the filter material after smoking the heated cigarette;

[0031] Based on the thermal shock temperature and the temperature curve to be evaluated, the cooling effect of the filter material is evaluated.

[0032] Optionally, the step of evaluating the cooling effect of the filter material based on the thermal shock temperature and the temperature curve to be evaluated includes:

[0033] detecting whether the thermal shock temperature is greater than the maximum value of the temperature curve to be evaluated;

[0034] If the thermal shock temperature is greater than the maximum value of the temperature curve to be evaluated, the cooling effect of the filter material is qualified;

[0035] If the thermal shock temperature is less than or equal to the maximum value of the temperature curve to be evaluated, the cooling effect of the filter material is unqualified.

[0036] Optionally, the step of evaluating the safety of the filter material by detecting the volatile substances by a mass spectrometer includes:

[0037] detecting the volatile substances by a mass spectrometer to obtain the material composition of the volatile substances;

[0038] Detecting whether the substance composition contains harmful substances;

[0039] If the material composition does not contain harmful substances, the safety of the filter material is qualified;

[0040] If the material components contain harmful substances, the safety of the filter material is unqualified.

[0041] In addition, to achieve the above-mentioned purpose, the present invention also provides a heated cigarette safety evaluation device, which includes: a synchronous thermal analyzer, an electron microscope scanner, a temperature measuring probe, a mass spectrometer, a memory, a processor, and a heated cigarette filter material safety evaluation program stored on the memory and runnable on the processor. When the heated cigarette filter material safety evaluation program is executed by the processor, the steps of the heated cigarette filter material safety evaluation method described above are implemented.

[0042] In addition, to achieve the above-mentioned purpose, the present invention also provides a storage medium, on which a heated cigarette filter material safety evaluation program is stored. When the heated cigarette filter material safety evaluation program is executed by a processor, the steps of the heated cigarette filter material safety evaluation method as described above are implemented.

[0043] The present invention provides a safety evaluation method, device, and storage medium for heated cigarette filter materials. The method uses a simultaneous thermal analyzer, an oven, and an electron microscope scanner to determine the melting temperature of the filter material. The cooling effect of the filter material is evaluated using a temperature probe, the oven, and the melting temperature. When the cooling effect is satisfactory, the filter material is heat-treated according to the melting temperature to obtain volatile substances released from the filter material. The volatile substances are then detected by a mass spectrometer to evaluate the safety of the filter material. This method accurately evaluates the safety of heated cigarette filter materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the terminal structure of the hardware operating environment involved in the embodiment of the present invention;

[0045] Figure 2 This is a schematic flow chart of a first embodiment of a method for evaluating the safety of heated cigarette filter materials according to the present invention;

[0046] Figure 3 This is a flow chart of a second embodiment of the method for safety evaluation of heated cigarette filter materials according to the present invention;

[0047] Figure 4 This is a flow chart of the third embodiment of the method for safety evaluation of heated cigarette filter materials of the present invention;

[0048] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0049] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0050] like Figure 1 As shown, Figure 1 It is a schematic diagram of the terminal structure of the hardware operating environment involved in the embodiment of the present invention.

[0051] The terminal in the embodiment of the present invention may be a PC, or a mobile terminal device with a display function, such as a smart phone or a tablet computer.

[0052] like Figure 1 As shown, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0053] Preferably, the terminal may also include a camera, an RF (Radio Frequency) circuit, a sensor, an audio circuit, a WiFi module, and the like. Among them, the sensors include light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen according to the brightness of the ambient light, and the proximity sensor may turn off the display screen and / or backlight when the mobile terminal is moved to the ear. As a type of motion sensor, the gravity acceleration sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that identify the posture of the mobile terminal (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; of course, the mobile terminal may also be configured with other sensors such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which will not be repeated here.

[0054] Those skilled in the art will understand that Figure 2 The terminal structure shown in the figure does not constitute a limitation to the terminal, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0055] like Figure 1As shown, the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a heated cigarette filter material safety evaluation program.

[0056] exist Figure 1 In the terminal shown, the network interface 1004 is primarily used to connect to and communicate data with a backend server; the user interface 1003 is primarily used to connect to and communicate data with a client (user end); and the processor 1001 can be used to call a heated cigarette filter material safety evaluation program stored in the memory 1005 and perform the following operations:

[0057] Determining the melting temperature of the filter material by using a simultaneous thermal analyzer, an oven, and an electron microscope scanner;

[0058] evaluating the cooling effect of the filter material by using a temperature probe, the oven, and the melting temperature;

[0059] When the cooling effect of the filter material is satisfactory, heat-treating the filter material according to the melting temperature to obtain volatile substances volatilized from the filter material;

[0060] The safety of the filter material is evaluated by detecting the volatile substances using a mass spectrometer.

[0061] Furthermore, the processor 1001 may call the heated cigarette filter material safety evaluation program stored in the memory 1005 and perform the following operations:

[0062] Obtaining the phase transition temperature of the filter material by a synchronous thermal analyzer;

[0063] determining a plurality of oven detection temperatures according to the phase change temperature;

[0064] Obtaining an electron microscope image of the filter material at each oven test temperature by an electron microscope scanner;

[0065] The melting temperature of the filter material is determined based on a plurality of the electron microscope images.

[0066] Furthermore, the processor 1001 may call the heated cigarette filter material safety evaluation program stored in the memory 1005 and perform the following operations:

[0067] sorting the plurality of electron microscope images from low to high according to the oven detection temperatures corresponding to the electron microscope images;

[0068] Detecting the similarity between two adjacent electron microscope images;

[0069] If the similarity between the N-1th electron microscope image and the Nth electron microscope image is greater than the first preset threshold and the similarity between the Nth electron microscope image and the N+1th electron microscope image is less than the second preset threshold, the oven detection temperature corresponding to the N+1th electron microscope image is determined as the melting temperature of the filter material.

[0070] Furthermore, the processor 1001 may call the heated cigarette filter material safety evaluation program stored in the memory 1005 and perform the following operations:

[0071] Sending a phase change temperature acquisition instruction to the synchronous thermal analyzer;

[0072] receiving a phase change temperature change curve returned by the synchronous thermal analyzer according to the phase change temperature acquisition instruction;

[0073] The phase transition temperature is calculated based on the phase transition temperature change curve.

[0074] Furthermore, the processor 1001 may call the heated cigarette filter material safety evaluation program stored in the memory 1005 and perform the following operations:

[0075] Send electron microscope image acquisition instructions to the electron microscope scanner;

[0076] Receive the electron microscope image returned by the electron microscope scanner according to the electron microscope image acquisition instruction, wherein the electron microscope image is an image of the filter material scanned by the electron microscope scanner after being placed in the oven for a preset time at each oven detection temperature.

[0077] Furthermore, the processor 1001 may call the heated cigarette filter material safety evaluation program stored in the memory 1005 and perform the following operations:

[0078] Obtaining a temperature change curve of the filter material inserted into the oven through a temperature measuring probe;

[0079] determining a correction temperature according to the phase change temperature and the temperature change curve;

[0080] Correcting the melting temperature according to the correction temperature to obtain the thermal shock temperature measured by the temperature measuring probe;

[0081] obtaining, by the temperature measuring probe, a temperature curve to be evaluated of the filter material after smoking the heated cigarette;

[0082] Based on the thermal shock temperature and the temperature curve to be evaluated, the cooling effect of the filter material is evaluated.

[0083] Furthermore, the processor 1001 may call the heated cigarette filter material safety evaluation program stored in the memory 1005 and perform the following operations:

[0084] detecting whether the thermal shock temperature is greater than the maximum value of the temperature curve to be evaluated;

[0085] If the thermal shock temperature is greater than the maximum value of the temperature curve to be evaluated, the cooling effect of the filter material is qualified;

[0086] If the thermal shock temperature is less than or equal to the maximum value of the temperature curve to be evaluated, the cooling effect of the filter material is unqualified.

[0087] Furthermore, the processor 1001 may call the heated cigarette filter material safety evaluation program stored in the memory 1005 and perform the following operations:

[0088] detecting the volatile substances by a mass spectrometer to obtain the material composition of the volatile substances;

[0089] Detecting whether the substance composition contains harmful substances;

[0090] If the material composition does not contain harmful substances, the safety of the filter material is qualified;

[0091] If the material components contain harmful substances, the safety of the filter material is unqualified.

[0092] Based on the above hardware structure, an embodiment of the method for evaluating the safety of heated cigarette filter materials of the present invention is proposed.

[0093] The invention discloses a method for evaluating the safety of heated cigarette filter materials. The method is applied to a safety evaluation device.

[0094] Reference Figure 2 , Figure 2 This is a flow chart of the first embodiment of the method for evaluating the safety of heated cigarette filter materials of the present invention.

[0095] Step S10, determining the melting temperature of the filter material by a synchronous thermal analyzer, an oven, and an electron microscope scanner;

[0096] In this embodiment, in order to evaluate the safety of heated cigarette filter materials, the safety evaluation device first determines the melting temperature of the filter material through a simultaneous thermal analyzer, an oven, and an electron microscope scanner.

[0097] Step S20, evaluating the cooling effect of the filter material by using a temperature measuring probe, the oven, and the melting temperature;

[0098] In this embodiment, after determining the melting temperature of the filter material, the safety evaluation device evaluates the cooling effect of the filter material through a temperature measuring probe, the oven, and the melting temperature.

[0099] Step S30, when the cooling effect of the filter material is satisfactory, heat-treating the filter material according to the melting temperature to obtain volatile substances volatilized from the filter material;

[0100] In this embodiment, when the cooling effect of the filter material is qualified, the safety evaluation device performs a heat treatment on the filter material according to the melting temperature to obtain volatile substances volatilized from the filter material.

[0101] Step S40: Detecting the volatile substances by a mass spectrometer to evaluate the safety of the filter material.

[0102] In this embodiment, after obtaining the volatile substances volatilized from the filter material, the safety of the filter material is evaluated by detecting the volatile substances using a mass spectrometer, wherein the mass spectrometer is a gas chromatography-mass spectrometer, which is a type of mass spectrometer.

[0103] Step S40, in which the safety of the filter material is evaluated by detecting the volatile substances using a mass spectrometer, may include:

[0104] Step a1, detecting the volatile substances by a mass spectrometer to obtain the material components of the volatile substances;

[0105] In this embodiment, after obtaining the volatile substances volatilized from the filter material, the volatile substances are detected by a mass spectrometer to obtain the material components of the volatile substances.

[0106] Step a2, detecting whether the material composition contains harmful substances;

[0107] In this embodiment, after the material composition of the volatile substance is obtained, it is detected whether the material composition contains harmful substances.

[0108] Step a3: When the material composition does not contain any harmful substances, the filter material is deemed to be safe;

[0109] In this embodiment, the safety evaluation device determines that the filter material meets safety standards when the material composition does not contain any hazardous substances that are extremely toxic when inhaled. Hazardous substances include one or more of: organochlorine compounds, polychlorinated biphenyls (PCBs), polychlorinated naphthalenes (PCNs), chlorinated alkanes, formaldehyde, organobromine compounds, aromatic amines and their derivatives, N-nitroso compounds, condensed-ring aromatic hydrocarbons, sulfur-containing compounds, and azo compounds.

[0110] Step a4: When the material components contain harmful substances, the safety of the filter material is unqualified.

[0111] In this embodiment, when the material components include harmful substances, the safety evaluation device determines that the safety of the filter material is unqualified.

[0112] This embodiment uses the above scheme to determine the melting temperature of the filter material using a simultaneous thermal analyzer, an oven, and an electron microscope scanner. The cooling effect of the filter material is evaluated using a temperature probe, the oven, and the melting temperature. When the cooling effect is satisfactory, the filter material is heat treated according to the melting temperature to obtain volatile substances volatilized from the filter material. These volatile substances are then analyzed using a mass spectrometer to evaluate the safety of the filter material. This allows for accurate safety evaluation of heated cigarette filter materials.

[0113] Further, refer to Figure 3 , Figure 3 This is a flow chart of the second embodiment of the method for safety evaluation of heated cigarette filter materials of the present invention. Figure 2 In the embodiment shown, step S10 of determining the melting temperature of the filter material by synchronously using a thermal analyzer, an oven, and an electron microscope scanner may include:

[0114] Step S11, obtaining the phase transition temperature of the filter material by a synchronous thermal analyzer;

[0115] In this example, to determine the melting temperature of the added cigarette filter material, the filter material was placed in a synchronous thermal analyzer, which analyzed and detected the filter material to obtain its phase transition temperature. The safety assessment device then obtained the phase transition temperature from the synchronous thermal analyzer; the phase transition temperature is the temperature at which the filter material changes from solid to liquid.

[0116] Step S11, obtaining the phase transition temperature of the filter material by a synchronous thermal analyzer, may include:

[0117] Step b1, sending a phase change temperature acquisition instruction to the synchronous thermal analyzer;

[0118] In this embodiment, in order to determine the melting temperature of the added cigarette filter material, the filter material is placed in a synchronous thermal analyzer, and the synchronous thermal analyzer analyzes and detects the filter material to obtain the phase change temperature of the filter material. Then, the safety evaluation device sends a phase change temperature acquisition instruction to the synchronous thermal analyzer.

[0119] Step b2, receiving the phase change temperature change curve returned by the synchronous thermal analyzer according to the phase change temperature acquisition instruction;

[0120] In this embodiment, after the safety evaluation device sends the phase change temperature acquisition instruction to the synchronous thermal analyzer, the synchronous thermal analyzer receives the phase change temperature acquisition instruction sent by the safety evaluation device. The synchronous thermal analyzer sends the phase change temperature change curve of the filter material stored in the synchronous thermal analyzer to the safety evaluation device according to the phase change temperature acquisition instruction. The safety evaluation device receives the phase change temperature change curve sent by the synchronous thermal analyzer.

[0121] Step b3: Calculate the phase transition temperature based on the phase transition temperature change curve.

[0122] In this embodiment, after the safety evaluation device receives the phase change temperature curve sent by the synchronous thermal analyzer, the safety evaluation device processes the phase change temperature curve and takes the maximum value on the phase change temperature curve as the phase change temperature of the filter material.

[0123] Step S12, determining a plurality of oven detection temperatures according to the phase change temperature;

[0124] In this embodiment, after obtaining the phase transition temperature of the filter material, the melting temperature determining device determines several oven detection temperatures based on the phase transition temperature. For example, when the phase transition temperature of the filter material is 160°C, the oven detection temperatures may be 155°C, 155.5°C, 156°C, 156.5°C, 157°C, 157.5°C, 158°C, 158.5°C, 159°C, 159.5°C, 160°C, 160.5°C, 161°C, 161.5°C, 162°C, 162.5°C, 163°C, 163.5°C, 164°C, 164.5°C, and 165°C.

[0125] As another embodiment, after obtaining the phase transition temperature of the filter material, the safety evaluation device uses all temperatures in an arithmetic progression that differ from the phase transition temperature by a first preset value and a second preset value as the oven detection temperature. The first preset value may be 5°C, and the second preset value may be 0.5°C. For example, when the phase transition temperature of the filter material is 160°C, the oven detection temperatures may be 155°C, 155.5°C, 156°C, 156.5°C, 157°C, 157.5°C, 158°C, 158.5°C, 159°C, 159.5°C, 160°C, 160.5°C, 161°C, 161.5°C, 162°C, 162.5°C, 163°C, 163.5°C, 164°C, 164.5°C, and 165°C.

[0126] Step S13, obtaining an electron microscope image of the filter material at each oven testing temperature by using an electron microscope scanner;

[0127] In this embodiment, after the safety evaluation device determines the oven detection temperature, the filter material is manually placed in the oven, the oven baking temperature is adjusted to the oven detection temperature, and the filter material is baked at the oven detection temperature for a preset time. The baked filter material is then placed under an electron microscope scanner for electron microscope inspection, and an electron microscope image of the filter material is obtained at the oven detection temperature. Similarly, an electron microscope image of the filter material is obtained at each oven detection temperature. The safety evaluation device then obtains an electron microscope image of the filter material at each oven detection temperature from the electron microscope scanner.

[0128] Step S13 obtains an electron microscope image of the filter material at each oven test temperature by using an electron microscope scanner, and the electron microscope image may include:

[0129] Step c1, sending an electron microscope image acquisition instruction to the electron microscope scanner;

[0130] In this embodiment, after the safety evaluation device determines the oven detection temperature, the filter material is manually placed in the oven, and the oven baking temperature is adjusted to the oven detection temperature. The filter material is baked at the oven detection temperature for a preset time. The baked filter material is then placed under an electron microscope scanner for electron microscope inspection to obtain an electron microscope image of the filter material at the oven detection temperature. Similarly, an electron microscope image of the filter material at each oven detection temperature is obtained. The safety evaluation device then sends an electron microscope image acquisition instruction to the electron microscope scanner. After receiving the electron microscope image acquisition instruction, the electron microscope scanner sends the electron microscope image of the filter material at each oven detection temperature stored in the electron microscope scanner to the safety evaluation device.

[0131] Step c2, receiving the electron microscope image returned by the electron microscope scanner according to the electron microscope image acquisition instruction, wherein the electron microscope image is an image of the filter material scanned by the electron microscope scanner after being placed in the oven for a preset time at each oven detection temperature.

[0132] In this embodiment, after the electron microscope scanner transmits the electron microscope images of the filter material at each of the oven test temperatures to the safety evaluation device, the safety evaluation device receives the electron microscope images of the filter material at each of the oven test temperatures returned by the electron microscope scanner in response to the electron microscope image acquisition instruction. The electron microscope images are images of the filter material scanned by the electron microscope scanner at each of the oven test temperatures after being placed in the oven for a preset time.

[0133] Step S14: determining the melting temperature of the filter material based on the plurality of electron microscope images.

[0134] In this embodiment, after obtaining electron microscope images of the filter material at each of the oven detection temperatures, the safety evaluation device determines the melting temperature of the filter material based on a plurality of the electron microscope images.

[0135] Step S14, determining the melting temperature of the filter material based on the plurality of electron microscope images, may include:

[0136] Step d1, sorting the plurality of electron microscope images from low to high according to the oven detection temperatures corresponding to the electron microscope images;

[0137] In this embodiment, after obtaining the electron microscope images of the filter material at each of the oven detection temperatures, the safety evaluation device sorts the electron microscope images from low to high according to the oven detection temperatures corresponding to the electron microscope images.

[0138] Step d2, detecting the similarity between two adjacent electron microscope images;

[0139] In this embodiment, the safety evaluation device sorts the plurality of electron microscope images from low to high according to the oven detection temperature, and then detects the similarity between two adjacent electron microscope images.

[0140] Step d3: If the similarity between the N-1th electron microscope image and the Nth electron microscope image is greater than the first preset threshold and the similarity between the Nth electron microscope image and the N+1th electron microscope image is less than the second preset threshold similarity, then the oven detection temperature corresponding to the N+1th electron microscope image is determined as the melting temperature of the filter material.

[0141] In this embodiment, when the safety evaluation device detects that the similarity between the N-1th electron microscope image and the Nth electron microscope image is greater than the first preset threshold and the similarity between the Nth electron microscope image and the N+1th electron microscope image is less than the second preset threshold, the oven detection temperature corresponding to the N+1th electron microscope image is determined as the melting temperature of the filter material.

[0142] This embodiment utilizes the above scheme to obtain the phase transition temperature of the filter material using a synchronous thermal analyzer; determine several oven test temperatures based on the phase transition temperature; obtain electron microscope images of the filter material at each of the oven test temperatures using an electron microscope scanner; and determine the melting temperature of the filter material based on the several electron microscope images. This allows for accurate measurement of the melting temperature of the filter material.

[0143] Further, refer to Figure 4 , Figure 4 This is a flow chart of the third embodiment of the method for safety evaluation of heated cigarette filter materials of the present invention. Figure 2In the embodiment shown, step S20 of evaluating the cooling effect of the filter material by using a temperature measuring probe, the oven, and the melting temperature may include:

[0144] Step S21, obtaining a temperature change curve of the filter material in the oven through a temperature measuring probe inserted into the temperature measuring probe;

[0145] In this embodiment, after the safety evaluation device determines the melting temperature of the filter material, the filter material with the temperature measuring probe inserted is placed in an oven, and the oven is gradually heated. The temperature measuring probe obtains the temperature change curve of the filter after the oven assembly is heated; the safety evaluation device obtains the temperature change curve of the filter material with the temperature measuring probe inserted in the oven from the temperature measuring probe.

[0146] Step S22, determining a correction temperature according to the phase change temperature and the temperature change curve;

[0147] In this embodiment, after obtaining the temperature change curve of the temperature measuring probe inserted into the filter material, the safety evaluation device determines the correction temperature based on the phase change temperature and the temperature change curve, wherein the correction temperature is the phase change temperature minus the maximum value on the temperature change curve, that is, the correction temperature is the phase change temperature minus the highest temperature in the temperature change curve.

[0148] Step S23 , correcting the melting temperature according to the correction temperature to obtain the thermal shock temperature measured by the temperature measuring probe.

[0149] In this embodiment, after determining the corrected temperature of the filter material, the safety assessment device corrects the melting temperature according to the corrected temperature to obtain the thermal shock temperature measured by the temperature measuring probe. The thermal shock temperature measured by the temperature measuring probe is used to measure the smoke temperature measured by the temperature measuring probe after puffing of the heated cigarette; the thermal shock temperature measured by the temperature measuring probe is the melting temperature minus the corrected temperature.

[0150] Step S24, obtaining, by the temperature measuring probe, a temperature curve to be evaluated of the filter material after smoking the heated cigarette;

[0151] In this embodiment, after obtaining the thermal shock temperature measured by the temperature probe, the heated cigarette is puffed on and the temperature probe is inserted into the filter paper material after the puff. The temperature probe then obtains the filter paper material's temperature curve to be evaluated. The safety assessment device then obtains the filter paper material's temperature curve to be evaluated from the temperature probe after the heated cigarette is puffed.

[0152] Step S25 : evaluating the cooling effect of the filter material based on the thermal shock temperature and the temperature curve to be evaluated.

[0153] In this embodiment, after obtaining the temperature curve to be evaluated of the filter material after smoking the heated cigarette, the safety evaluation device evaluates the cooling effect of the filter material based on the thermal shock temperature and the temperature curve to be evaluated.

[0154] Step S25, based on the thermal shock temperature and the temperature curve to be evaluated, evaluates the cooling effect of the filter material, which may include:

[0155] Step e1, detecting whether the thermal shock temperature is greater than the maximum value of the temperature curve to be evaluated;

[0156] In this embodiment, after obtaining the temperature curve to be evaluated after smoking the heated cigarette, the safety evaluation device detects whether the thermal shock temperature is greater than the maximum value of the temperature curve to be evaluated.

[0157] Step e2: If the thermal shock temperature is greater than the maximum value of the temperature curve to be evaluated, the cooling effect of the filter material is qualified.

[0158] In this embodiment, when the safety evaluation device determines that the thermal shock temperature is greater than the maximum value of the temperature curve to be evaluated, the cooling effect of the filter material is qualified.

[0159] Step e3: If the thermal shock temperature is less than or equal to the maximum value of the temperature curve to be evaluated, the cooling effect of the filter material is unqualified.

[0160] In this embodiment, when the safety evaluation device determines that the thermal shock temperature is less than or equal to the maximum value of the temperature curve to be evaluated, the cooling effect of the filter material is unqualified.

[0161] This embodiment utilizes the above-described scheme to obtain a temperature change curve of the filter material inserted into the oven using a temperature measuring probe; determine a correction temperature based on the phase transition temperature and the temperature change curve; correct the melting temperature based on the correction temperature to obtain the thermal shock temperature measured by the temperature measuring probe; obtain a temperature curve to be evaluated of the filter material after smoking the heated cigarette using the temperature measuring probe; and evaluate the cooling effect of the filter material based on the thermal shock temperature and the temperature curve to be evaluated. This allows accurate evaluation of the cooling effect of the filter material using the temperature measuring probe.

[0162] The invention also provides a safety evaluation device.

[0163] The safety evaluation device of the present invention includes: a synchronous thermal analyzer, an electron microscope scanner, a temperature measuring probe, a mass spectrometer, a memory, a processor, and a program for determining the melting temperature of a heated cigarette filter material stored in the memory and executable on the processor. When the program for determining the melting temperature of a heated cigarette filter material is executed by the processor, the steps of the method for determining the melting temperature of a heated cigarette filter material as described above are implemented.

[0164] Among them, the method implemented when the heated cigarette filter material melting temperature determination program running on the processor is executed can refer to the various embodiments of the heated cigarette filter material melting temperature determination method of the present invention, and will not be repeated here.

[0165] The present invention also provides a storage medium.

[0166] The storage medium of the present invention stores a heated cigarette filter material safety evaluation program, which, when executed by a processor, implements the steps of the heated cigarette filter material safety evaluation method described above.

[0167] Among them, the method implemented when the heated cigarette filter material safety evaluation program running on the processor is executed can refer to the various embodiments of the heated cigarette filter material safety evaluation method of the present invention, and will not be repeated here.

[0168] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0169] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0170] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0171] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for evaluating the safety of heated cigarette filter materials, characterized by: The safety evaluation method for heated cigarette filter materials comprises the following steps: Determining the melting temperature of the filter material by using a simultaneous thermal analyzer, an oven, and an electron microscope scanner; evaluating the cooling effect of the filter material by using a temperature probe, the oven, and the melting temperature; When the cooling effect of the filter material is satisfactory, heat-treating the filter material according to the melting temperature to obtain volatile substances volatilized from the filter material; evaluating the safety of the filter material by detecting the volatile substances using a mass spectrometer; The step of determining the melting temperature of the filter material by using a synchronous thermal analyzer, an oven, and an electron microscope scanner comprises: Obtaining the phase transition temperature of the filter material by a synchronous thermal analyzer; determining a plurality of oven detection temperatures according to the phase change temperature; Obtaining an electron microscope image of the filter material at each oven test temperature by an electron microscope scanner; determining the melting temperature of the filter material according to a plurality of electron microscope images; Wherein, the step of evaluating the cooling effect of the filter material by using a temperature measuring probe, the oven, and the melting temperature comprises: Obtaining a temperature change curve of the filter material inserted into the oven through a temperature measuring probe; determining a correction temperature according to the phase change temperature and the temperature change curve; Correcting the melting temperature according to the correction temperature to obtain the thermal shock temperature measured by the temperature measuring probe; obtaining, by the temperature measuring probe, a temperature curve to be evaluated of the filter material after smoking the heated cigarette; Based on the thermal shock temperature and the temperature curve to be evaluated, the cooling effect of the filter material is evaluated.

2. The method for evaluating the safety of heated cigarette filter materials according to claim 1, wherein: The step of determining the melting temperature of the filter material based on the plurality of electron microscope images comprises: sorting the plurality of electron microscope images from low to high according to the oven detection temperatures corresponding to the electron microscope images; Detecting the similarity between two adjacent electron microscope images; If the similarity between the N-1th electron microscope image and the Nth electron microscope image is greater than the first preset threshold and the similarity between the Nth electron microscope image and the N+1th electron microscope image is less than the second preset threshold, the oven detection temperature corresponding to the N+1th electron microscope image is determined as the melting temperature of the filter material.

3. The method for safety evaluation of heated cigarette filter materials according to claim 1, wherein: The step of obtaining the phase change temperature of the filter material by a synchronous thermal analyzer comprises: Sending a phase change temperature acquisition instruction to the synchronous thermal analyzer; receiving a phase change temperature change curve returned by the synchronous thermal analyzer according to the phase change temperature acquisition instruction; The phase transition temperature is calculated based on the phase transition temperature change curve.

4. The method for evaluating the safety of heated cigarette filter materials according to claim 1, wherein: The step of obtaining an electron microscope image of the filter material at each oven testing temperature by using an electron microscope scanner comprises: Send electron microscope image acquisition instructions to the electron microscope scanner; Receive the electron microscope image returned by the electron microscope scanner according to the electron microscope image acquisition instruction, wherein the electron microscope image is an image of the filter material scanned by the electron microscope scanner after being placed in the oven for a preset time at each oven detection temperature.

5. The method for evaluating the safety of heated cigarette filter materials according to claim 1, wherein: The step of evaluating the cooling effect of the filter material based on the thermal shock temperature and the temperature curve to be evaluated includes: detecting whether the thermal shock temperature is greater than the maximum value of the temperature curve to be evaluated; If the thermal shock temperature is greater than the maximum value of the temperature curve to be evaluated, the cooling effect of the filter material is qualified; If the thermal shock temperature is less than or equal to the maximum value of the temperature curve to be evaluated, the cooling effect of the filter material is unqualified.

6. The method for safety evaluation of heated cigarette filter materials according to claim 1, wherein: The step of evaluating the safety of the filter material by detecting the volatile substances by a mass spectrometer comprises: detecting the volatile substances by a mass spectrometer to obtain the material composition of the volatile substances; Detecting whether the substance composition contains harmful substances; If the material composition does not contain harmful substances, the safety of the filter material is qualified; If the material components contain harmful substances, the safety of the filter material is unqualified.

7. A safety evaluation device, characterized in that: The safety evaluation device includes: a synchronous thermal analyzer, an electron microscope scanner, a temperature measuring probe, a mass spectrometer, a memory, a processor, and a heated cigarette filter material safety evaluation program stored on the memory and running on the processor. When the heated cigarette filter material safety evaluation program is executed by the processor, the steps of the heated cigarette filter material safety evaluation method according to any one of claims 1 to 6 are implemented.

8. A storage medium, characterized in that: The storage medium stores a heated cigarette filter material safety evaluation program, which, when executed by the processor, implements the steps of the heated cigarette filter material safety evaluation method according to any one of claims 1 to 6.

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