Slow-release fixing seat, preparation method thereof and aerosol product

Abstract

The invention provides a slow-release fixing seat, a preparation method thereof and an aerosol product. Raw materials of the slow-release fixing seat comprise tobacco materials so as to form the slow-release fixing seat or cover a fixing area of a heating body connected with the slow-release fixing seat. The tobacco material in the slow-release fixing seat can release flavor more slowly compared with a heating area under the action of the heating body with one end connected with the tobacco material, so that the defects that the aerosol generating matrix at the front end of the heating body bursts to release before smoking after being heated, and the content of released substances in the later period is sharply reduced are overcome; the flavor of the aerosol product is more uniformly released before and after smoking, and the smoking feeling is improved; in addition, due to the structural characteristics of the tobacco material, the tobacco material has the capability of adsorbing and containing liquid substances, so that the flexible regulation and control of the flavor adjusting agent become possible.

Description

Technical Field

[0001] This invention relates to the field of aerosol products technology, and in particular to a sustained-release fixation device, its preparation method, and an aerosol product. Background Technology

[0002] In the field of new tobacco products, heated cigarettes typically involve continuously heating the tobacco portion of the entire cigarette to between 200°C and 350°C until the cigarette is completely consumed. For cigarettes of the same size, heated cigarettes provide more calories than traditional cigarettes when consumed completely. The smoke temperature of heated cigarettes is also significantly higher than that of traditional cigarettes. This results in the flavor and aroma being released in the first few puffs of each cigarette, with subsequent puffs decaying much more rapidly. Summary of the Invention

[0003] This invention provides a slow-release fixing seat, its preparation method, and an aerosol product to solve the technical problem of rapid decay of flavor after explosive release when heated cigarettes.

[0004] To achieve the above objectives, the technical solution provided by the present invention is as follows: In a first aspect, the present invention provides a slow-release fixation seat, the raw material of which includes tobacco material to form the slow-release fixation seat or to cover a fixed area of ​​a heating element connected thereto.

[0005] Furthermore, the tobacco material is selected from one or more of flue-cured tobacco, aromatic tobacco, and cigar tobacco leaves.

[0006] Furthermore, the moisture content of the tobacco material is less than or equal to 2%.

[0007] Furthermore, the raw materials of the sustained-release fixation seat include the following components by weight percentage: 50%–60% tobacco material, 22%–30% modified phenolic resin, 8%–10% porous silica, 2%–10% chopped glass fiber, 0.5%–1% silane coupling agent, and 0.5%–1% magnesium stearate.

[0008] Furthermore, the raw materials of the slow-release fixation device also include a flavoring agent, and the flavoring agent is added to the tobacco material at a ratio of 0.5% to 6%.

[0009] Furthermore, the flavoring agent is selected from one or more of tobacco flavoring, fruit flavoring, and mint flavoring.

[0010] Furthermore, the raw material of the sustained-release fixation device also includes glycerol, and the weight ratio of glycerol to the flavoring agent is 20 to 50:1.

[0011] A second aspect of the present invention provides a method for preparing the above-mentioned sustained-release fixation seat, comprising the following steps: S1. The raw materials of the slow-release fixing seat are mixed and placed into a mold to form a casting; S2. After baking the casting in an oven and then cooling it, the slow-release fixing seat is obtained.

[0012] Furthermore, step S2 also includes adding a mixture of glycerol and flavoring agent to the baked and cooled casting.

[0013] Furthermore, the oven temperature variation settings are as follows: the oven temperature is raised to 40℃~60℃ at a heating rate of 5℃ / min and held for 0.5h; then the oven temperature is raised to 120℃~140℃ at a heating rate of 3℃ / min and held for 2h; finally, the oven temperature is lowered to room temperature at a cooling rate of 2℃ / min.

[0014] Furthermore, in step S1, the moisture content of the raw materials after mixing is controlled to be 10% to 12%.

[0015] Furthermore, in step S1, when forming in the mold, the forming pressure is 20MPa to 22MPa, and the holding time is 3min.

[0016] A third aspect of the present invention provides an aerosol article comprising a heating element, an aerosol generating matrix, and the aforementioned sustained-release fixing seat, wherein one end of the heating element is mounted on the sustained-release fixing seat, and the aerosol generating matrix is ​​disposed on at least one side of the heating element.

[0017] Furthermore, the slow-release fixing base has an assembly hole, and one end of the heating element is fixed in the assembly hole for electrical connection with an external power source.

[0018] The slow-release holder provided by this invention allows the tobacco material to release its flavor more slowly than the heating zone under the action of a heating element connected to one end. This compensates for the defect that the aerosol generating matrix at the front end of the heating element releases a burst of flavor in the first few puffs and then the content of released substances drops sharply in the later stages after heating. This makes the flavor of the aerosol product more evenly released before and after smoking, improving the smoking experience. In addition, due to its own structural characteristics, the tobacco material has the ability to adsorb and contain liquid substances, making it possible to flexibly adjust the flavor. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0021] In a first aspect of this application, a slow-release fixation seat is provided. The raw material of the slow-release fixation seat includes tobacco material to form the slow-release fixation seat or cover the fixation area of ​​the heating element connected thereto.

[0022] In this embodiment, the tobacco material is based on natural tobacco and is used to provide nicotine and / or tobacco flavor. It includes not only raw tobacco leaves but also various derivative forms after physical, chemical, or biological treatment. It is in a non-dispersed state and can be shaped to meet the requirements of heated cigarettes. It can be used alone to fix the heating element or with the aid of a support to fix the heating element. The tobacco material can be subjected to high-temperature treatment to remove harmful components such as nicotine and tar, retaining only the natural tobacco fiber matrix. There are no heavy metal residues (lead, cadmium, mercury ≤ 0.1 mg / kg).

[0023] Specifically, the tobacco material is selected from one or more of flue-cured tobacco, aromatic tobacco, and cigar tobacco leaves. Among them, flue-cured tobacco has a rich aroma, and its natural sweetness and fruity aroma are retained after grinding; aromatic tobacco has a unique aroma with spicy, herbal, and floral notes, and a strong fragrance; cigar tobacco leaves have a mellow and strong flavor after fermentation. Furthermore, the moisture content of the tobacco material is less than or equal to 2%.

[0024] In the slow-release holder of this application embodiment, the tobacco material can release its flavor more slowly than the heating zone under the action of the heating element connected to one end. This compensates for the defect that the aerosol generating matrix at the front end of the heating element releases a burst of flavor in the first few puffs after heating, and the content of released substances drops sharply in the later stages. This makes the flavor of the aerosol product more evenly released before and after smoking, improving the smoking experience. In addition, due to its own structural characteristics, the tobacco material has the ability to adsorb and contain liquid substances, making it possible to flexibly adjust the flavor.

[0025] In some embodiments, the raw materials of the sustained-release fixation seat include the following components by weight percentage: 50%–60% tobacco material, 22%–30% modified phenolic resin, 8%–10% porous silica, 2%–10% chopped glass fiber, 0.5%–1% silane coupling agent, and 0.5%–1% magnesium stearate.

[0026] In this embodiment, modified phenolic resin is used as a binder, with a free phenol content of less than or equal to 0.1%, and no small molecule harmful substances are released after curing. It is heat-resistant above 150℃ without carbonization and has rigidity after molding. Porous silica provides both strength enhancement and fragrance adsorption and slow release. Short-cut glass fiber enhances flexural strength and heat deformation resistance, eliminating the risk of dust shedding. Silane coupling agent KH-550 can be selected to improve interfacial bonding. Magnesium stearate is used as a release agent. All the above raw materials must be stored separately in sealed containers to avoid cross-contamination, with a storage temperature below or equal to 25℃ and humidity below or equal to 60%.

[0027] In some embodiments, the raw materials of the sustained-release holder also include a flavoring agent, which is added at a ratio of 0.5% to 6% of the tobacco material. In the embodiments of this application, the flavoring agent can enrich the flavor of the tobacco material during sustained release in the sustained-release holder, satisfying the smoker's taste preferences. Specifically, the flavoring agent is selected from one or more of tobacco flavorings, fruit flavorings, and mint flavorings. The flavoring agent does not contain any sensitizing ingredients.

[0028] In other embodiments, the raw material for the sustained-release fixation device also includes glycerol, with a weight ratio of glycerol to flavoring agent of 20–50:1. In the embodiments of this application, glycerol can be used to dilute and dissolve the flavoring agent, and can also act as a moisturizing and plasticizing agent.

[0029] A second aspect of this application provides a method for preparing the above-mentioned sustained-release fixation seat, comprising the following steps: S1, mixing the raw materials for the sustained-release fixation seat and placing them into a mold to form a casting; S2, placing the casting in an oven to bake and then cooling it to obtain the sustained-release fixation seat.

[0030] Specifically, in step S1, tobacco material or tobacco material, porous silica, chopped glass fiber, and silane coupling agent are added to a high-speed mixer in a specific ratio and dry-mixed for 10-15 minutes at a speed of 300 rpm. The silane coupling agent is used to activate the surface of the inorganic filler, ensuring that the glass fiber and silica are uniformly dispersed within the tobacco fiber. Finally, modified phenolic resin and magnesium stearate are added and wet-mixed for 20-25 minutes at a speed of 150 rpm. The moisture content of the mixed raw materials should be controlled at 10%-12%, with no lumps or stratification. When the raw materials for the slow-release fixation device include glycerol and flavoring agents, they are not added to the mixer during step S1 to prevent the glycerol and flavoring agents from volatilizing during the mixing process.

[0031] Furthermore, step S2 also includes adding a mixture of glycerol and flavoring agent to the baked and cooled casting via vacuum impregnation. The specific steps are as follows: 1) Vacuuming: Place the cooled casting into a sealed stainless steel vacuum container. Start the vacuum pump and evacuate the container to -0.09MPa to -0.095MPa (absolute pressure approximately 5 to 10 kPa). Extract the air from the micropores of the casting. Maintain the vacuum state for 15 to 20 minutes, until no more air bubbles escape from the base surface.

[0032] 2) Liquid Injection: While maintaining a vacuum, open the inlet valve and inject the prepared glycerol and flavoring agent mixture into the tank until the base is completely submerged. Because the inside of the casting is a vacuum, the external liquid will be forcibly "forced" into the depths of the micron-level pores under the pressure difference.

[0033] 3) Pressure holding and penetration: Continue to maintain the vacuum state for 10-15 minutes to ensure that the liquid penetrates to the center of the casting.

[0034] 4) Restore atmospheric pressure: Slowly open the air inlet valve to allow air to enter the can and restore atmospheric pressure. Atmospheric pressure will further compress the liquid into the pores, locking in the fragrance.

[0035] 5) Soaking: Continue soaking under normal pressure for 30-60 minutes until adsorption saturation is reached.

[0036] 6) Draining: Remove the casting and place it on a stainless steel mesh rack. Let it stand at room temperature for 2-4 hours to drain. This removes excess liquid from the surface, prevents contamination of the outer bag during packaging, and avoids an explosive release of aroma during use.

[0037] 7) Weighing: Ensure consistent quality. Weigh the drained sample to ensure the amount of adsorption liquid.

[0038] In some embodiments, the oven temperature is set as follows: the oven temperature is raised to 40℃~60℃ at a rate of 5℃ / min and held for 0.5h; then the oven temperature is raised to 120℃~140℃ at a rate of 3℃ / min and held for 2h; finally the oven temperature is lowered to room temperature at a rate of 2℃ / min.

[0039] In this embodiment, the furnace temperature is raised to 40℃~60℃ in the first stage to remove trace amounts of moisture and prevent bubbling of the casting. In the second stage, the furnace temperature is raised to 120℃~140℃ to completely cure the modified phenolic resin and form a rigid network. In the third stage, the furnace temperature is lowered to room temperature at a rate of 2℃ / min to avoid rapid cooling of the casting and the resulting thermal stress that could lead to cracking.

[0040] In some embodiments, during step S1, the molding pressure in the mold is 20 MPa to 22 MPa, and the holding time is 3 minutes. A molding mold is pre-fabricated, requiring the mold material to be food-grade stainless steel, and the inner wall of the mold to be coated with a thin layer of food-grade release agent. The raw materials are mixed and then placed into the mold for molding. The molding pressure and holding pressure are used to ensure the strength of the casting. After curing, the casting must be free of free phenols and heavy metal leaching, meeting the requirements for food contact material migration testing.

[0041] The sustained-release fixation seat prepared in this application has a compressive strength greater than or equal to 12 MPa, which is superior to the standard; a flexural strength greater than or equal to 5 MPa; and a deformation rate of less than 0.5% after continuous exposure to 150°C for 40 minutes. The surface Shore hardness is 45HD to 55HD, and the porosity is 8% to 12%.

[0042] A third aspect of this application provides an aerosol article, including a heating element, an aerosol generating matrix, and the aforementioned sustained-release fixing seat, wherein one end of the heating element is mounted on the sustained-release fixing seat, and at least one side of the heating element is provided with the aerosol generating matrix.

[0043] In this embodiment, a portion of the heating element's heating zone is embedded in a sustained-release fixing seat, allowing the flavor material in the seat to be released slowly. A portion of the heating element is placed in the sustained-release fixing seat, while the remaining portion is placed in the aerosol-generating matrix. The portion placed in the sustained-release fixing seat constitutes the low-temperature zone of the heating element, achieving sustained release of the flavor material. The portion placed in the aerosol-generating matrix constitutes the high-temperature zone of the heating element. The flavor material in the aforementioned sustained-release fixing seat can be released within the temperature range of 80°C to 150°C, without the generation of harmful decomposition products, and at a uniform release rate.

[0044] The present application will be further illustrated by more specific embodiments below. All reagents in the following embodiments are commercially available.

[0045] Example 1 A slow-release fixation device, the raw materials of which include the following components by weight percentage: 59% tobacco material, 25.55% modified phenolic resin, 9% porous silica, 4.45% chopped glass fiber, 1.0% silane coupling agent, and 1.0% magnesium stearate.

[0046] The preparation method of the above-mentioned sustained-release fixation device includes the following steps: 1. Add 486.15g of the above-mentioned tobacco material, 74.15g of porous silica, 36.67g of chopped glass fiber, and 8.24g of silane coupling agent to a high-speed mixer. Set the speed to 300 rpm and mix for 10 minutes. The silane coupling agent activates the surface of the inorganic filler, ensuring the glass fiber and silica are uniformly dispersed within the tobacco fiber. Then add 210.5g of modified phenolic resin and 8.24g of magnesium stearate, wet mix for 20 minutes, and reduce the speed to 150 rpm. The mixed raw materials should have a moisture content of 10%, be free of lumps and stratification.

[0047] 2. Pre-fabricate the molding mold, using food-grade stainless steel as the material and coating the inner wall of the mold with a food-grade release agent. Place the mixed raw materials from step 1 into the mold and shape them at a pressure of 20 MPa for 3 minutes to obtain the casting.

[0048] 3. Place the casting from step 2 into the furnace, raise the furnace temperature to 50°C at a rate of 5°C / min, and hold for 0.5 hours; raise the furnace temperature from 50°C to 130°C at a rate of 3°C / min and hold for 2 hours; lower the furnace temperature from 130°C to room temperature at a rate of 2°C / min, and allow the casting to cool with the furnace to obtain the above-mentioned slow-release fixing seat.

[0049] Example 2 A sustained-release fixation device comprises the following components: 492.75 g (59.8%) of tobacco material, 206.8 g (25.1%) of modified phenolic resin, 74.15 g (9%) of porous silica, 41.2 g (5%) of chopped glass fiber, 4.53 g (0.55%) of silane coupling agent, and 4.53 g (0.55%) of magnesium stearate.

[0050] The preparation method of the above-mentioned sustained-release fixation seat is the same as that in Example 1.

[0051] Example 3 A sustained-release fixation device, the raw materials of which include the following components: 453.2 g (55%) of tobacco material, 230.7 g (28%) of modified phenolic resin, 82.4 g (10%) of porous silica, 41.2 g (5%) of chopped glass fiber, 8.24 g (1%) of silane coupling agent, and 8.24 g (1%) of magnesium stearate.

[0052] The preparation method of the above-mentioned sustained-release fixation seat is the same as that in Example 1.

[0053] Example 4 This embodiment is basically the same as Embodiment 1, except that the sustained-release fixation seat also includes glycerol and tobacco flavoring. The proportion of tobacco flavoring added to the tobacco material is 0.5%, and the weight ratio of glycerol to tobacco flavoring is 30:1.

[0054] The preparation method of the sustained-release fixation base in this embodiment is basically the same as that in Embodiment 1, except that it also includes the following steps: The 72.9g glycerol and 2.43g tobacco flavoring from the mixed raw materials were added to the casting in step 3 using a vacuum negative pressure impregnation method. The specific steps are as follows: 1) Vacuuming: Place the cooled casting into a sealed stainless steel vacuum container. Start the vacuum pump and evacuate the container to -0.09MPa to -0.095MPa (absolute pressure approximately 5 to 10 kPa). Extract the air from the micropores of the casting. Maintain the vacuum state for 15 minutes, until no more air bubbles escape from the base surface.

[0055] 2) Liquid Injection: While maintaining a vacuum, open the inlet valve and inject the prepared mixture of glycerol and tobacco flavoring into the tank until the base is completely submerged. Because the inside of the casting is a vacuum, the external liquid will be forcibly "pressed" into the depths of the micron-level pores under the pressure difference.

[0056] 3) Pressure holding and penetration: Continue to maintain the vacuum state for 10 minutes to ensure that the liquid penetrates to the center of the casting.

[0057] 4) Restore atmospheric pressure: Slowly open the air inlet valve to allow air to enter the can and restore atmospheric pressure. Atmospheric pressure will further compress the liquid into the pores, locking in the fragrance.

[0058] 5) Soaking: Continue soaking for 30 minutes under normal pressure until adsorption saturation is reached.

[0059] 6) Draining: Remove the casting and place it on a stainless steel mesh rack. Let it stand at room temperature for 3 hours to drain. This removes excess surface liquid, preventing contamination of the outer bag during packaging and avoiding an explosive release of aroma during use. The resulting slow-release holder is now obtained.

[0060] 7) Weighing: Ensure consistent quality by guaranteeing the weight ratio of glycerol and flavoring agent adsorbed in the sample.

[0061] Example 5 This embodiment is basically the same as embodiment 2, except that the slow-release fixation seat also includes glycerol and tobacco flavoring. The proportion of tobacco flavoring added to the tobacco material is 1%, and the weight ratio of glycerol to tobacco flavoring is 20:1.

[0062] The preparation method of the sustained-release fixation seat in this embodiment is the same as that in Embodiment 4.

[0063] Example 6 This embodiment is basically the same as embodiment 3, except that the slow-release fixation seat also includes glycerol and tobacco flavoring. The proportion of tobacco flavoring added to the tobacco material is 4%, and the weight ratio of glycerol to tobacco flavoring is 30:1.

[0064] The preparation method of the sustained-release fixation seat in this embodiment is the same as that in Embodiment 4.

[0065] The performance of the sustained-release fixation bases of Examples 1 to 3 was tested, and the test results are shown in Table 1.

[0066] Table 1. Performance test results of the sustained-release fixation device in Examples 1 to 3 (average value of multiple samples).

[0067] As can be seen from the performance test results in Table 1, the strength, hardness, and porosity of the sustained-release fixing bases produced in this application all meet the requirements of aerosol products. As shown in Table 1, in Example 2, the proportion of modified phenolic resin and chopped glass fiber is increased, while the softening / volatile components such as glycerol and fragrance are reduced. Therefore, the strength (compression and bending resistance) and hardness are significantly improved, the heat deformation resistance is better, and the porosity is slightly lower. It is suitable for scenarios with high requirements for base strength and heat resistance, and moderate requirements for porosity and sustained-release effect. In Example 3, the amount of porous silica and glycerol is relatively high, and the amount of resin is slightly low. Therefore, the porosity is the highest, which is more conducive to heat release; however, the strength and hardness are slightly lower than the previous two schemes, and the heat deformation resistance is slightly worse. It is suitable for scenarios with high requirements for heat release effect and less stringent requirements for strength and heat resistance. In Example 1, the proportions of each component are balanced, with no obvious performance bias. The strength, hardness, porosity, and heat deformation resistance are all at a moderate level. It is suitable for heat release scenarios where there are no special requirements for various performance aspects and a comprehensive balance is sought.

[0068] Each of the sustained-release fixing bases from Examples 4 to 6 is connected to a heating element. One end of the heating element is fixed in the assembly hole of the sustained-release fixing base. An aerosol generating matrix is ​​provided on both sides of the heating element to produce an aerosol product. The aerosol products are then placed in an aerosol heating appliance, and the end electrode of the heating element fixed in the assembly hole is electrically connected to the heating appliance.

[0069] The heating element was placed in the high-temperature zone of the aerosol-generating matrix at temperatures of 250℃, 300℃, and 350℃, respectively. The operating temperature of the heating element placed in the slow-release holder was ensured to be below 200℃ in all these operating scenarios. A suction experiment was then conducted on the aforementioned aerosol product. During suction, because the temperature of the heating element placed in the slow-release holder was below 200℃, the average temperature conducted to the holder ensured that the substances were released within the range of 80℃ to 150℃, with no harmful decomposition products generated. The release duration was 4–5 minutes. The results are shown in Table 2.

[0070] Table 2. Results of product experience tests for aerosol products in Examples 4 to 6.

[0071] As shown in Table 2, due to the electrode area being below 200°C while the heating surface reaches 250–350°C, a natural thermal barrier is formed inside the base. The surface pores near the heating surface heat up rapidly, consuming the surface tobacco material and flavorings; while the temperature in areas far from the heating element and the deep pores at the center of the base is lower (possibly only 100–150°C), allowing volatile substances and flavorings in the tobacco material to be released slowly. As smoking continues, the heat gradually penetrates inward, accelerating the release of volatile substances and flavorings from the tobacco material. This mechanism perfectly solves the problem of "strong at the beginning and weak at the end." Although the surface temperature of the tobacco contacting the tobacco, reaching 350°C, causes a small amount of surface flavoring to decompose, the decomposition rate is significantly reduced because most of the flavorings inside the base are in a low-temperature protection zone. Users primarily experience a rich aroma, rather than a burnt smell. For example, Example 6, because it has the most porous silica (10%), means it has the deepest "cold aroma storage zone," and this gradient effect is most pronounced at 300°C and 350°C, resulting in the strongest endurance. In terms of structural strength, since phenolic resin and glass fiber are very stable at temperatures below 200°C, the base will not deform and there are no safety hazards when connecting external circuits.

[0072] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A slow-release fixation seat, characterized in that: The raw material for the sustained-release fixation seat includes tobacco material to form the sustained-release fixation seat or to cover the fixed area of ​​the heating element connected thereto.

2. The slow-release fixation seat according to claim 1, characterized in that, The tobacco material is selected from one or more of flue-cured tobacco, aromatic tobacco, and cigar tobacco leaves.

3. The slow-release fixation seat according to claim 1, characterized in that, The moisture content of the tobacco material is less than or equal to 2%.

4. The slow-release fixing seat according to claim 1, characterized in that, The raw materials of the sustained-release fixation seat include the following components by weight percentage: 50%–60% tobacco material, 22%–30% modified phenolic resin, 8%–10% porous silica, 2%–10% chopped glass fiber, 0.5%–1% silane coupling agent, and 0.5%–1% magnesium stearate.

5. The sustained-release fixation seat according to any one of claims 1 to 4, characterized in that, The raw materials of the slow-release fixation device also include flavoring agents, and the proportion of the flavoring agents added to the tobacco material is 0.5% to 6%.

6. The slow-release fixing seat according to claim 5, characterized in that, The flavoring agent is selected from one or more of tobacco flavoring, fruit flavoring, and mint flavoring.

7. The slow-release fixation seat according to claim 5, characterized in that, The raw material of the sustained-release fixation device also includes glycerol, and the weight ratio of glycerol to the flavoring agent is 20 to 50:

1.

8. The method for preparing the sustained-release fixation seat according to any one of claims 1 to 7, characterized in that, Includes the following steps: S1. The raw materials of the slow-release fixing seat are mixed and placed into a mold to form a casting; S2. After baking the casting in an oven and then cooling it, the slow-release fixing seat is obtained.

9. The method for preparing the sustained-release fixation seat according to claim 8, characterized in that, Step S2 further includes adding a mixture of glycerol and flavoring agent to the baked and cooled casting by vacuum negative pressure impregnation.

10. The method for preparing the sustained-release fixation seat according to claim 8, characterized in that, The oven temperature is set as follows: the oven temperature is raised to 40℃~60℃ at a rate of 5℃ / min and held for 0.5h; then the oven temperature is raised to 120℃~140℃ at a rate of 3℃ / min and held for 2h; finally, the oven temperature is lowered to room temperature at a rate of 2℃ / min.

11. The method for preparing the sustained-release fixation seat according to claim 8, characterized in that, In step S1, the moisture content of the raw materials is controlled to be 10% to 12% after mixing.

12. The method for preparing the sustained-release fixation seat according to claim 8, characterized in that, In step S1, when forming in the mold, the forming pressure is 20MPa to 22MPa, and the holding time is 3min.

13. An aerosol product, characterized in that, The invention comprises a heating element, an aerosol generating matrix, and a sustained-release fixation base as described in any one of claims 1 to 7 or prepared by the preparation method described in any one of claims 8 to 12, wherein one end of the heating element is mounted on the sustained-release fixation base, and the aerosol generating matrix is ​​disposed on at least one side of the heating element.

14. The aerosol product according to claim 13, characterized in that, The slow-release fixing base has an assembly hole, and one end of the heating element is fixed in the assembly hole for electrical connection with an external power source.

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