Receptor material and preparation method thereof

Abstract

The invention relates to a receptor material and a preparation method thereof, and belongs to the technical field of receptor materials. The susceptor material comprises a plurality of susceptor material layers, the plurality of susceptor material layers comprising: a first susceptor material layer comprising a first susceptor material for generating heat; a second susceptor material layer containing a second susceptor material and used for regulating and controlling temperature and heating; the first receptor material layers and the second receptor material layers are alternately arranged; the thermal expansion coefficient alpha 1 of the first susceptor material and the thermal expansion coefficient alpha 2 of the first susceptor material meet the condition that alpha 1-alpha 2 / alpha 2 is smaller than or equal to 3% in a plurality of set temperature intervals. The thermal expansion coefficients of the first susceptor material and the second susceptor material in the susceptor material are almost consistent in a plurality of set temperature intervals, and the bonding strength of the susceptor material can be improved, so that the susceptor material does not have the problems of layering, deformation and the like in the heating use process, the heating effect is more uniform and consistent, and the service life of the susceptor material is prolonged. And the smoking experience feeling is better.

Description

Technical Field

[0001] The present application relates to the technical field of sensor materials, and in particular to a sensor material and a preparation method thereof. Background Art

[0002] An aerosol generating system for heating an aerosol-forming substrate based on the principle of electromagnetic induction may include a susceptor assembly, and the susceptor assembly includes an induction source and a susceptor. The induction source is configured to generate an alternating electromagnetic field, which induces heat in the susceptor, thereby generating at least one of eddy current loss and hysteresis loss. The aerosol generating substrate may be ordered shredded tobacco, disordered shredded tobacco, or tea leaves, herbal plant particles or powders, all of which are expected to be heated to volatilize an aerosol for inhalation.

[0003] In order to control the temperature of the substrate, a sensor has been proposed. At present, the mainstream sensor is a two-layer, three-layer or even more sensor material having a first sensor material and a second sensor material, and the sensor material has two Curie temperature points. At present, the sensor may have problems such as stratification and bending during heating and use, resulting in uneven heating of the aerosol, or the second sensor material cannot be temperature-controlled, the system cannot recognize it, and even heating stops, affecting the puffing experience. Summary of the invention

[0004] The present application provides a susceptor material and a preparation method thereof to solve the following technical problem: how to improve the bonding strength of a multilayer susceptor material.

[0005] In a first aspect, an embodiment of the present application provides a susceptor material, wherein the susceptor material comprises a plurality of susceptor material layers, wherein the plurality of susceptor material layers comprises:

[0006] A first susceptor material layer containing a first susceptor material for generating heat;

[0007] a second susceptor material layer containing a second susceptor material for regulating temperature and generating heat;

[0008] The first susceptor material layers and the second susceptor material layers are arranged alternately;

[0009] The thermal expansion coefficient α1 of the first susceptor material and the thermal expansion coefficient α2 of the first susceptor material satisfy the following relationship in multiple set temperature intervals:

[0010] |α1-α2| / α2≤3%.

[0011] Optionally, the relationship satisfies: |α1-α2| / α2≤1%.

[0012] Optionally, the multiple set temperature ranges include: 20°C to 100°C, 20°C to 200°C, 20°C to 300°C, 20°C to 400°C, 20°C to 500°C, and 20°C to 600°C.

[0013] Optionally, the saturation magnetic induction intensity of the first receptor material ≥ 1.25T.

[0014] Optionally, the chemical composition of the first receptor material includes: Si, Mn, Cr, and Fe.

[0015] Optionally, by mass fraction, in the chemical composition of the first receptor material, the content of Si is 0.1% to 0.5%, the content of Mn is 0.1% to 0.7%, and the content of Cr is 9.8% to 18.5%.

[0016] Optionally, the second receptor material satisfies the following properties: the maximum magnetic permeability μm ≥ 150 mH / m, and the saturation magnetic induction intensity ≥ 0.7T.

[0017] Optionally, the chemical composition of the second receptor material includes: Si, Mn, Ni, Mo, and Fe.

[0018] Optionally, by mass fraction, in the chemical composition of the second receptor material, the content of Si is 0.1% to 0.5%, the content of Mn is 0.1% to 1.1%, the content of Ni is 70.0% to 85.0%, and the content of Mo is 0.5% to 6.5%.

[0019] Optionally, the composite method of each layer of the receptor material includes one of the following: rolling, electroplating, deposition, coating, cladding, welding.

[0020] In a second aspect, the embodiments of the present application also provide a preparation method of the receptor material according to any one of the first aspect, the method includes:

[0021] Composite the first receptor material and the second receptor material to obtain the receptor material; wherein,

[0022] The receptor material contains multiple layers of receptor material layers, and the first receptor material layer containing the first receptor material and the second receptor material layer containing the second receptor material are arranged alternately;

[0023] The composite method of each layer of the receptor material includes one of the following: rolling, electroplating, deposition, coating, cladding, welding.

[0024] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art:

[0025] The receptor material provided by the embodiment of the present application contains multiple layers of receptor material layers. The multiple layers of receptor material layers include: a first receptor material layer containing a first receptor material for generating heat; a second receptor material layer containing a second receptor material for regulating temperature and generating heat; the first receptor material layer and the second receptor material layer are arranged alternately; the coefficient of thermal expansion α1 of the first receptor material and the coefficient of thermal expansion α2 of the first receptor material satisfy the following relational expression in multiple set temperature ranges: |α1 - α2| / α2 ≤ 3%. The coefficients of thermal expansion of the first receptor material and the second receptor material in the receptor material are almost the same in multiple set temperature ranges, which can improve the bonding strength between the first receptor material layer and the second receptor material layer. Therefore, the receptor material will not have problems such as delamination and deformation during the heating process, and the heating effect is more uniform, and the suction experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic flowchart of a preparation method of a receptor material provided by an embodiment of the present application;

[0029] Figure 2 It is a schematic diagram of a repeated bending test of a receptor material provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0031] Various embodiments of the present application may exist in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity, and should not be construed as a rigid limitation on the scope of the present application; therefore, it should be considered that the described range description has specifically disclosed all possible sub-ranges and single values within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, which applies regardless of the range. Additionally, whenever a numerical range is indicated herein, it means including any cited number (fraction or integer) within the indicated range.

[0032] In the present application, unless otherwise stated, the orientation terms such as "upper" and "lower" specifically refer to the drawing directions in the drawings. Additionally, in the description of the specification of the present application, the terms "comprising", "including", etc. mean "including but not limited to". In this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0033] Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment, etc. used in the present application can be obtained through market purchase or can be prepared by existing methods.

[0034] In a first aspect, embodiments of the present application provide a receptor material, and the receptor material contains multiple receptor material layers, and the multiple receptor material layers include:

[0035] A first receptor material layer containing a first receptor material, for generating heat;

[0036] A second receptor material layer containing a second receptor material, for regulating temperature and generating heat;

[0037] The first receptor material layer and the second receptor material layer are alternately arranged;

[0038] The coefficient of thermal expansion α1 of the first receptor material and the coefficient of thermal expansion α2 of the first receptor material satisfy the following relational expression in multiple set temperature ranges:

[0039] |α1 - α2| / α2 ≤ 3%.

[0040] The susceptor material adopts a multi-layer structure. The susceptor can be a two-layer material, a three-layer material or even a four-layer material or more, and is alternately provided with a first susceptor material layer containing a first susceptor material and a second susceptor material layer containing a second susceptor material (the number of blocks n1 of the first susceptor material and the number of blocks n2 of the second susceptor material satisfy the relationship:

[0041] |n1-n2|≤1). This alternating structure design has a clear functional division of labor. The first sensor material layer is responsible for heat generation, and the second sensor material layer can not only regulate the temperature but also generate heat. Through the combination of different functional layers, effective management of heat generation and temperature control is achieved, making the functions of the sensor material more diversified and precise. For example, in actual applications, rapid temperature rise may be required in some scenarios, and the first sensor material layer can quickly start the heating function; and when the temperature reaches a certain level, the second sensor material layer can regulate the temperature to avoid excessive temperature or excessive fluctuations, thereby ensuring safety and stability in use.

[0042] The thermal expansion coefficient α1 of the first sensor material and the thermal expansion coefficient α2 of the second sensor material satisfy the relationship in multiple set temperature intervals: |α1-α2| / α2≤3%. This shows that the difference in thermal expansion performance of the two sensor materials at different temperatures is very small, reflecting the consistency of the thermal expansion coefficients of the two sensor materials. If |α1-α2| / α2 is higher than 3%, during the heating process of the sensor material, due to the large difference in thermal expansion coefficients of different material layers, it will cause greater stress inside the sensor material. When the stress accumulates to a certain extent, problems such as stratification and deformation will occur, thereby increasing the probability of stratification and deformation of the sensor material during heating and use, affecting the uniformity and consistency of the heating effect, and worsening the suction experience. The good matching of the thermal expansion coefficients of the first sensor material and the second sensor material in the sensor material provided in the embodiment of the present application ensures the stability of the material structure.

[0043] Since the thermal expansion coefficients of the first susceptor material and the second susceptor material in multiple set temperature intervals are almost the same, the bonding strength between the first susceptor material layer and the second susceptor material layer is improved. The improvement of the bonding strength prevents the material from stratification and deformation during heating and use. At the same time, the stable structure helps to achieve a more uniform heating effect. Because in the absence of stratification and deformation, heat can be more evenly transferred and distributed inside the material, avoiding local overheating or overcooling. The uniform heating effect can better handle related substances, making the suction process smoother and more efficient, thereby improving the user experience.

[0044] Illustratively, |α1-α2| / α2 may be 3%, 2.5%, 2%, 1%, etc.

[0045] In some embodiments, the relational expression satisfies: |α1 - α2| / α2 ≤ 1%.

[0046] Exemplarily, |α1 - α2| / α2 can be 1%, 0.9%, 0.8%, 0.7%, 0.6%, 0.5%, 0.4%, 0.3%, 0.2%, 0.1%, etc.

[0047] In some embodiments, the multiple set temperature ranges include: 20°C to 100°C, 20°C to 200°C, 20°C to 300°C, 20°C to 400°C, 20°C to 500°C, and 20°C to 600°C.

[0048] The above multiple set temperature ranges can be 20°C to 100°C, 20°C to 200°C, 20°C to 300°C, 20°C to 400°C, 20°C to 500°C, and 20°C to 600°C. The set temperature range extends from 20°C to 600°C, with a large span and covering multiple different temperature ranges. 20°C as the starting temperature is close to the normal ambient temperature, which means that the first receptor material and the second receptor material can ensure good matching of the thermal expansion coefficients during the daily ambient temperature and the process of gradually increasing temperature. And the different upper limit temperatures (100°C, 200°C, 300°C, 400°C, 500°C, 600°C) take into account the temperature conditions that the receptor material may encounter in different application scenarios. For example, in some simple heating scenarios with low temperature requirements, the temperature may only need to reach about 100°C; while in some industrial applications or special heat treatment processes, a high temperature of 600°C may be required. This comprehensive setting of the temperature range enables the receptor material to adapt to a variety of different working temperature conditions, with strong versatility and adaptability. Requiring the thermal expansion coefficient relationship of |α1 - α2| / α2 ≤ 3% to be satisfied within such a wide temperature range fully verifies the performance stability of the two materials in the receptor material. This indicates that whether at a lower temperature (such as in the range of 20°C to 100°C) or at a higher temperature (such as in the range of 20°C to 600°C), the bonding strength between the first receptor material layer and the second receptor material layer can be effectively guaranteed, and there will be no obvious thermal expansion differences due to temperature changes resulting in problems such as delamination or deformation.

[0049] In some embodiments, the saturation magnetic induction intensity of the first receptor material ≥ 1.25T.

[0050] The saturation magnetic induction intensity of the first sensor material can be ≥1.25T, and the first sensor material is mainly used for heat generation. Generally, materials with higher saturation magnetic induction intensity will produce more significant eddy current losses in the alternating magnetic field, and these losses will be released in the form of heat, thereby realizing the heating function. The saturation magnetic induction intensity of ≥1.25T can ensure that the first sensor material has sufficient energy converted into thermal energy in the alternating magnetic field environment to meet the heating requirements in different application scenarios. For example, the temperature can be quickly increased to reach the set operating temperature range. Exemplarily, the saturation magnetic induction intensity of the first sensor material can be 1.25T, 1.26T, 1.27T, 1.28T, 1.29T, 1.30T, etc.

[0051] In some embodiments, the chemical composition of the first susceptor material includes: Si, Mn, Cr, and Fe.

[0052] In some embodiments, in the chemical composition of the first susceptor material, by mass fraction, the content of Si is 0.1% to 0.5%, the content of Mn is 0.1% to 0.7%, and the content of Cr is 9.8% to 18.5%.

[0053] By precisely blending Si, Mn, and Cr alloy elements, an excellent saturation magnetic flux density is obtained, and it also has excellent oxidation resistance and corrosion resistance. In particular, the Cr element mainly improves the oxidation resistance and corrosion resistance of the alloy. If the Cr content is too high and higher than 18.5%, the saturation magnetic flux density may drop sharply. If the Cr content is too low and lower than 9.8%, it may be difficult to improve the oxidation resistance and corrosion resistance. As a deoxidizer, the Si element can remove oxygen from the alloy steel liquid, improve the purity of the alloy, and thus improve the saturation magnetic flux density of the alloy. However, as a non-magnetic element, if the Si content is too high and higher than 0.5%, it may deteriorate the magnetic properties. If the Si content is too low and lower than 0.1%, it may be difficult to play a deoxidation role, which is also detrimental to the magnetic properties. As a deoxidizer and desulfurizer, the Mn element can remove oxygen and sulfur from the alloy steel liquid, improve the purity of the alloy, and thus improve the saturation magnetic flux density of the alloy. However, as a non-magnetic element, if the Mn content is too high and higher than 0.7%, it may deteriorate the magnetic properties. If the Mn content is too low and lower than 0.1%, it may be difficult to play a deoxidation and desulfurization role, which is also detrimental to the magnetic properties. Exemplarily, the Si content can be 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, etc.; the Mn content can be 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, etc.; the Cr content can be 9.8%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 18.5%, etc.

[0054] In some embodiments, the second receptor material satisfies the following properties: the maximum permeability μm ≥ 150 mH / m, and the saturation magnetic induction intensity ≥ 0.7 T.

[0055] The maximum permeability μm of the second receptor material can be ≥ 150 mH / m, which means that the second receptor material has a strong response ability to the magnetic field. The second receptor material has a saturation magnetic induction intensity ≥ 0.7 T, indicating that the second receptor material can maintain good magnetic stability within a certain high-temperature range. The first receptor material has a relatively high saturation magnetic induction intensity (≥ 1.25 T), and the second receptor material has a saturation magnetic induction intensity ≥ 0.7 T, enabling the two materials to cooperate more coordinately under the action of the magnetic field to jointly complete heating and temperature regulation. Exemplarily, the maximum permeability μm of the second receptor material can be 150 mH / m, 155 mH / m, 160 mH / m, 170 mH / m, 175 mH / m, etc.; the saturation magnetic induction intensity of the second receptor material can be 0.7 T, 0.75 T, 0.8 T, 0.85 T, 0.9 T, 0.95 T, 1.0 T, etc.

[0056] In some embodiments, the chemical composition of the second receptor material includes: Si, Mn, Ni, Mo, and Fe.

[0057] In some embodiments, in terms of mass fraction, in the chemical composition of the second receptor material, the content of Si is 0.1% to 0.5%, the content of Mn is 0.1% to 1.1%, the content of Ni is 70.0% to 85.0%, and the content of Mo is 0.5% to 6.5%.

[0058] By precisely blending Si, Mn, Ni, and Mo alloy elements, excellent magnetic permeability is obtained while taking into account the saturation magnetic induction intensity. In particular, the Ni element mainly improves the magnetic permeability of the alloy and can also improve the processing performance. If the Ni content is too high and higher than 85.0%, the saturation magnetic induction intensity may decrease, and if the Ni content is too low and lower than 70.0%, the magnetic permeability may decrease. Secondly, the Mo element can inhibit the long-range ordered transformation and ensure that the alloy has good magnetic properties. However, as a non-magnetic element, if the Mo content is too high and higher than 6.5%, it may significantly deteriorate the magnetic properties and reduce the magnetic permeability and saturation magnetic induction intensity; if the Mo content is too low and lower than 0.5%, it may be difficult to inhibit the long-range ordered transformation, which also deteriorates the magnetic properties and reduces the magnetic permeability and saturation magnetic induction intensity. As a deoxidizer, Si element can remove oxygen from alloy steel liquid, improve the purity of alloy, and thus improve the magnetic properties of alloy (including saturation magnetic induction intensity and magnetic permeability). However, as a non-magnetic element, if the Si content is too high and higher than 0.5%, it may deteriorate the magnetic properties. If the Si content is too low and lower than 0.1%, it may be difficult to play the role of deoxidation, which is also unfavorable to the magnetic properties. As a deoxidizer and desulfurizer, Mn element can remove oxygen and sulfur from alloy steel liquid, improve the purity of alloy, and thus improve the magnetic properties of alloy (including saturation magnetic induction intensity and magnetic permeability). However, as a non-magnetic element, if the Mn content is too high and higher than 1.1%, it may deteriorate the magnetic properties. If the Mn content is too low and lower than 0.1%, it may be difficult to play the role of deoxidation and desulfurization, which is also unfavorable to the magnetic properties. Exemplarily, the Si content can be 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, etc.; the Mn content can be 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, etc.; the Ni content can be 70.0%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85.0%, etc.; the Mo content can be 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, 6.5%, etc.

[0059] Based on the influence of the chemical composition of the susceptor material on the thermal expansion coefficient, the chemical composition of the first susceptor material and the second susceptor material are reasonably designed to ensure that |α1-α2| / α2≤3%.

[0060] In a second aspect, the present application also provides a method for preparing the susceptor material according to any one of the first aspects. Figure 1 A schematic diagram of a process for preparing a sensor material provided in an embodiment of the present application; see Figure 1 , the method comprising:

[0061] S1. Compounding the first susceptor material and the second susceptor material to obtain a susceptor material; wherein,

[0062] The susceptor material comprises a plurality of susceptor material layers, wherein a first susceptor material layer comprising the first susceptor material and a second susceptor material layer comprising the second susceptor material are arranged alternately;

[0063] The composite method of each layer of the susceptor material includes one of the following: rolling, electroplating, deposition, coating, cladding, and welding.

[0064] The thermal expansion coefficients of the first sensor material and the second sensor material in the sensor material are almost the same in multiple set temperature ranges, which can improve the bonding strength between the first sensor material layer and the second sensor material layer. No matter whether the two are combined together by any bonding method such as rolling, electroplating, deposition, coating, covering, welding, etc., there will be no problems such as stratification and deformation during heating and use, the heating effect is more uniform and stable, and the smoking experience is better.

[0065] The preparation method of the sensor material is implemented based on the above-mentioned sensor material. The specific composition of the sensor material can refer to the above-mentioned embodiment. Since the preparation method of the sensor material adopts part or all of the technical solutions of the above-mentioned embodiment, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiment, which will not be described one by one here.

[0066] The present application will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are intended only to illustrate the present application and are not intended to limit the scope of the present application. The experimental methods for the unrecorded specific conditions in the following examples are usually measured according to national standards. If there is no corresponding national standard, then carry out according to general international standards, normal conditions or according to the conditions recommended by the manufacturer.

[0067] Example 1

[0068] A sensor material, the sensor material comprises three layers of sensor material, the first sensor material is represented by the letter A, the second sensor material is represented by the letter B, and the combination is "ABA". The multi-layer sensor material layer comprises:

[0069] A first susceptor material layer containing a first susceptor material for generating heat; the mass percentages of the elements of the first susceptor material are: Si: 0.15%, Mn: 0.4%, Cr: 16.0%, and the remainder Fe;

[0070] A second receptor material layer containing a second receptor material for regulating temperature and generating heat; the mass percentages of the elements of the second receptor material are: Si: 0.45%, Mn: 0.85%, Ni: 79.3%, Mo: 4.0%, and the balance is Fe.

[0071] The first receptor material layer and the second receptor material layer are arranged alternately;

[0072] Please refer to the thermal expansion coefficient α1 of the first receptor material and the thermal expansion coefficient α2 of the first receptor material in Example 1 shown in Table 1.

[0073] Table 1 Thermal expansion coefficient α1 of the first receptor material and thermal expansion coefficient α2 of the first receptor material in Example 1

[0074]

[0075] A preparation method of a receptor material, comprising: compounding a first receptor material and a second receptor material to obtain a receptor material; wherein, the compounding method is rolling.

[0076] Example 2

[0077] A receptor material, the receptor material contains five receptor material layers, the first receptor material is represented by the letter A, the second receptor material is represented by B, and the combination method is "ABABA". The multi-layer receptor material layer includes: a first receptor material layer containing a first receptor material for generating heat; the mass percentages of the elements of the first receptor material are: Si: 0.3%, Mn: 0.39%, Cr: 17.2%, and the balance is Fe;

[0078] A second receptor material layer containing a second receptor material for regulating temperature and generating heat; the mass percentages of the elements of the second receptor material are: Si: 0.4%, Mn: 0.7%, Ni: 78.4%, Mo: 3.4%, and the balance is Fe.

[0079] The first receptor material layer and the second receptor material layer are arranged alternately;

[0080] Please refer to the thermal expansion coefficient α1 of the first receptor material and the thermal expansion coefficient α2 of the first receptor material in Example 2 shown in Table 2.

[0081] Table 2 Thermal expansion coefficient α1 of the first receptor material and thermal expansion coefficient α2 of the first receptor material in Example 2

[0082]

[0083] A preparation method of a receptor material, comprising: compounding a first receptor material and a second receptor material to obtain a receptor material; wherein, the compounding method is electroplating.

[0084] Example 3

[0085] A receptor material, the receptor material contains two layers of receptor material layers. The first receptor material is represented by the letter A, and the second receptor material is represented by B. The combination method is "AB". The multi-layer receptor material layer includes:

[0086] The first receptor material layer containing the first receptor material, which is used for heating; the mass percentages of the elements of the first receptor material are: Si: 0.4%, Mn: 0.45%, Cr: 16.8%, and the balance is Fe;

[0087] The second receptor material layer containing the second receptor material, which is used for regulating temperature and heating; the mass percentages of the elements of the second receptor material are: Si: 0.47%, Mn: 0.83%, Ni: 78.0%, Mo: 2.8%, and the balance is Fe.

[0088] The first receptor material layer and the second receptor material layer are arranged alternately;

[0089] Please refer to the thermal expansion coefficient α1 of the first receptor material and the thermal expansion coefficient α2 of the first receptor material in Example 3 shown in Table 3.

[0090] Table 3 The thermal expansion coefficient α1 of the first receptor material and the thermal expansion coefficient α2 of the first receptor material in Example 3

[0091]

[0092]

[0093] A preparation method of a receptor material, comprising: compounding a first receptor material and a second receptor material to obtain a receptor material; wherein, the compounding method is deposition.

[0094] Example 4

[0095] A receptor material, the receptor material contains multiple layers of receptor material layers. The first receptor material is represented by the letter A, and the second receptor material is represented by B. The combination method is "ABAB". The multi-layer receptor material layer includes:

[0096] The first receptor material layer containing the first receptor material, which is used for heating; the mass percentages of the elements of the first receptor material are: Si: 0.45%, Mn: 0.6%, Cr: 17.3%, and the balance is Fe;

[0097] A second sensor material layer containing a second sensor material for regulating temperature and generating heat; the mass percentages of the elements of the second sensor material are: Si: 0.59%, Mn: 0.79%, Ni: 77.4%, Mo: 2.5%, and the balance is Fe.

[0098] The first sensor material layer and the second sensor material layer are arranged alternately;

[0099] Please refer to the thermal expansion coefficient α1 of the first sensor material and the thermal expansion coefficient α2 of the first sensor material in Example 4 shown in Table 4.

[0100] Table 4 Thermal expansion coefficient α1 of the first sensor material and thermal expansion coefficient α2 of the first sensor material in Example 4

[0101]

[0102] A preparation method of a sensor material, comprising: compounding a first sensor material and a second sensor material to obtain a sensor material; wherein, the compounding method is deposition.

[0103] Comparative Example 1

[0104] A sensor material, the sensor material contains multiple sensor material layers, the first sensor material is represented by the letter A, the second sensor material is represented by B, and the combination method is "ABA". The multiple sensor material layers include:

[0105] A first sensor material layer containing a first sensor material for generating heat; the mass percentages of the elements of the first sensor material are: Si: 0.15%, Mn: 0.55%, Cr: 16.03%, and the balance is Fe;

[0106] A second sensor material layer containing a second sensor material for regulating temperature and generating heat; the mass percentages of the elements of the second sensor material are: Si: 0.48%, Mn: 1.02%, Ni: 79.6%, Mo: 3.99%, and the balance is Fe.

[0107] The first sensor material layer and the second sensor material layer are arranged alternately;

[0108] Please refer to the thermal expansion coefficient α1 of the first sensor material and the thermal expansion coefficient α2 of the first sensor material in Comparative Example 1 shown in Table 5.

[0109] A preparation method of a sensor material, comprising: compounding a first sensor material and a second sensor material to obtain a sensor material; wherein, the compounding method is rolling.

[0110] Table 5 Thermal expansion coefficient α1 of the first susceptor material of Comparative Example 1 and thermal expansion coefficient α2 of the first susceptor material

[0111]

[0112] The susceptor materials provided in Examples 1 to 4 and Comparative Example 1 were subjected to repeated bending tests. Figure 2 A schematic diagram of a repeated bending test of a sensor material provided in an embodiment of the present application; see Figure 2 , where A---pull rod; S---sample; t---sample thickness; h---pull rod distance; r---bending arc radius. The sample length of the repeated bending test is 150mm and the width is 5mm. The sample is clamped with an arc-shaped metal clamp with a radius equal to the bending arc radius (mm) of the bending test parameters shown in Table 6 and corresponding to the sample thickness. Bend the sample 90° to one side (called the first bending) and then restore the sample (called the second bending). In the same way, bend the sample 90° in the opposite direction (called the third bending), and then restore the sample (called the fourth bending), and observe the state of the joint visually. Please refer to the test results of the sensor material bending test shown in Table 7.

[0113] Table 6 Bending test parameters (mm)

[0114]

[0115]

[0116] Table 7 Test results of sensor material bending test

[0117] Serial number 100 times of repeated bending Example 1 No delamination phenomenon occurred, and the combination was good Example 2 No delamination phenomenon occurred, and the combination was good Example 3 No delamination phenomenon occurred, and the combination was good Example 4 No delamination phenomenon occurred, and the combination was good Comparative example 1 Delamination phenomenon occurred

[0118] As shown in Table 1, the susceptor material provided in the embodiment of the present application did not delaminate after 100 repeated bends, and was well bonded. Therefore, during the heating process, no delamination or deformation problems occurred, the heating effect was more uniform and stable, and the smoking experience was better.

[0119] One or more technical solutions in the embodiments of the present application also have at least the following technical effects or advantages:

[0120] (1) The first susceptor material and the second susceptor material are combined together by any one of rolling, electroplating, deposition, coating, cladding, welding and the like. Since the thermal expansion coefficients of the two susceptor materials are basically consistent within multiple set temperature ranges, the susceptor prepared after the combination has excellent bonding strength, and will not have problems such as delamination and deformation during heating and use. The heating effect is uniform and consistent, and the smoking experience is better;

[0121] (2) The binding strength of the receptor material provided by the embodiments of the present application is good, and delamination does not occur after bending 100 times repeatedly. The heating process is stable, uniform and consistent.

[0122] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A susceptor material, the susceptor material comprising a plurality of susceptor material layers, the plurality of susceptor material layers comprising: A first susceptor material layer containing a first susceptor material for generating heat; a second susceptor material layer containing a second susceptor material for regulating temperature and generating heat; The first susceptor material layers and the second susceptor material layers are arranged alternately; The thermal expansion coefficient α1 of the first susceptor material and the thermal expansion coefficient α2 of the first susceptor material satisfy the following relationship in multiple set temperature intervals: |α1-α2| / α2≤3％。 2. The susceptor material according to claim 1, characterized in that The relationship satisfies: |α1-α2| / α2≤1%.

3. The susceptor material according to claim 1, characterized in that The plurality of set temperature intervals include: 20°C to 100°C, 20°C to 200°C, 20°C to 300°C, 20°C to 400°C, 20°C to 500°C and 20°C to 600°C.

4. The susceptor material according to claim 1, characterized in that The saturation magnetic induction intensity of the first susceptor material is ≥1.25T.

5. The susceptor material according to claim 1 or 4, characterized in that The chemical composition of the first susceptor material includes Si, Mn, Cr, and Fe.

6. The susceptor material according to claim 5, characterized in that In terms of mass fraction, the chemical composition of the first susceptor material comprises 0.1% to 0.5% Si, 0.1% to 0.7% Mn, and 9.8% to 18.5% Cr.

7. The susceptor material according to claim 1, characterized in that The second susceptor material meets the following properties: maximum magnetic permeability μm≥150mH / m, saturation magnetic induction intensity≥0.7T.

8. The susceptor material according to claim 1 or 7, characterized in that The chemical composition of the second susceptor material includes: Si, Mn, Ni, Mo and Fe.

9. The susceptor material according to claim 8, characterized in that In terms of mass fraction, the chemical composition of the second susceptor material comprises 0.1% to 0.5% Si, 0.1% to 1.1% Mn, 70.0% to 85.0% Ni and 0.5% to 6.5% Mo.

10. A method for preparing the susceptor material according to any one of claims 1 to 9, the method comprising: The first susceptor material and the second susceptor material are compounded to obtain a susceptor material; wherein, The susceptor material comprises a plurality of susceptor material layers, wherein a first susceptor material layer comprising the first susceptor material and a second susceptor material layer comprising the second susceptor material are arranged alternately; The composite method of each layer of the susceptor material includes one of the following: rolling, electroplating, deposition, coating, cladding, and welding.

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