Atomizer, electronic atomization device and preparation method of imitation ceramic metal piece

Abstract

The invention provides an atomizer, an electronic atomization device and a preparation method of an imitation ceramic metal part. The atomizer comprises an imitated ceramic metal piece, and the imitated ceramic metal piece comprises a metal base material and a functional layer formed on the surface of the metal base material. The production cost of the imitated ceramic metal piece of the atomizer is low.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic atomization, and in particular to an atomizer, an electronic atomization device and a method for preparing an imitation ceramic metal part. Background Art

[0002] The aerosol generating device includes an atomizer, which includes a shell and a ceramic tube. The ceramic tube is arranged in the shell, and the outer wall surface of the ceramic tube cooperates with the inner wall surface of the shell to form a liquid storage cavity, which is used to store the atomized medium. The inner wall surface of the ceramic tube defines an air outlet channel, and the aerosol formed by the atomization of the atomized medium flows out through the air outlet channel. At present, most of the ceramic tubes on the market are made of pure ceramics, and the production cost of ceramic tubes is relatively high. Summary of the invention

[0003] The atomizer, electronic atomization device and preparation method of imitation ceramic metal parts provided in the present application mainly solve the problem of high production cost of the atomizer.

[0004] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide an atomizer, the atomizer comprises: an imitation ceramic metal part, the imitation ceramic metal part comprises a metal substrate and a functional layer formed on the surface of the metal substrate.

[0005] In one embodiment, the roughness of the surface of the metal substrate facing the functional layer is 0.5-1.5 μm.

[0006] In one embodiment, the thickness of the functional layer is 5 μm-25 μm.

[0007] In one embodiment, the metal substrate is a stainless steel substrate; and the functional layer includes a film former, a stabilizer and a colorant.

[0008] In one embodiment, the functional layer is obtained by spraying and curing the coating; wherein the coating comprises a solvent, a film former, a stabilizer, a colorant and an additive;

[0009] Preferably, the coating comprises the following components in parts by weight: 20-40 parts of solvent, 10-50 parts of film former, 20-50 parts of stabilizer, 10-20 parts of colorant and 1-20 parts of auxiliary agent;

[0010] Preferably, the auxiliary agent includes at least one of the following components in parts by weight: 1-10 parts of a curing agent, 1-5 parts of a leveling agent or 1-5 parts of a dispersant;

[0011] Preferably, the film-forming agent includes epoxy resin; further preferably, the film-forming agent includes water-based epoxy resin; particularly preferably, the film-forming agent further includes at least one of the following components in parts by weight: 1-10 parts of polyimide resin, 1-10 parts of alkyd resin or 1-10 parts of phosphate;

[0012] Preferably, the solvent comprises deionized water;

[0013] Preferably, the stabilizer comprises at least one of silicon, aluminum or titanium; and / or, the stabilizer comprises a nitride and / or oxide of at least one of silicon, aluminum or titanium;

[0014] Further preferably, the stabilizer comprises at least one of the following components in parts by weight: 10-25 parts of silicon or 10-25 parts of aluminum;

[0015] Preferably, the colorant agent comprises titanium dioxide and / or titanium;

[0016] Preferably, the average particle size of the colorant is 0.01-0.5um;

[0017] Preferably, the average particle size of the stabilizer is 0.1-1 um.

[0018] In one embodiment, the ceramic-like metal part satisfies at least one of the following conditions: the hardness of the functional layer is greater than 8H; the roughness of the surface of the functional layer on the side away from the metal substrate is 0.2-0.3 um; the surface energy of the surface of the functional layer on the side away from the metal substrate is greater than or equal to 1.5×10 -2 N / m and less than or equal to 1.9×10 - 2 N / m; the thermal conductivity of the functional layer is greater than or equal to 16w / (m·k) and less than or equal to 22w / (m·k); the volume resistivity of the functional layer is greater than 10 17 Ω·cm, and the arc resistance of the functional layer is greater than 300s.

[0019] In one embodiment, the atomizer further comprises a shell, the imitation ceramic metal piece cooperates with the shell to form a liquid storage cavity, and the liquid storage cavity is used to store the atomizing medium; the functional layer faces the liquid storage cavity.

[0020] In order to solve the above technical problems, the second technical solution provided in this application is: to provide an electronic atomization device, including the atomizer described above.

[0021] In order to solve the above technical problems, the third technical solution provided in the present application is: to provide a method for preparing a ceramic-like metal part, comprising: roughening the surface of a metal substrate so that the roughness of the surface of the metal substrate is 0.5-1.5 μm; spraying a coating on the surface of the roughened metal substrate; curing the coating to form the functional layer; wherein the curing temperature is 150-300°C; preferably, the process for roughening the surface of the metal substrate is a sandblasting process; preferably, the particle size of the sandblasting in the sandblasting process is 80 mesh-180 mesh.

[0022] In one embodiment, the coating comprises a solvent, a film former, a stabilizer, a colorant and an auxiliary agent;

[0023] Preferably, the coating comprises the following components in parts by weight: 20-40 parts of solvent, 10-50 parts of film former, 20-50 parts of stabilizer, 10-20 parts of colorant and 1-20 parts of auxiliary agent;

[0024] Preferably, the auxiliary agent includes at least one of the following components in parts by weight: 1-10 parts of a curing agent, 1-5 parts of a leveling agent or 1-5 parts of a dispersant;

[0025] Preferably, the film-forming agent includes epoxy resin; further preferably, the film-forming agent includes water-based epoxy resin; particularly preferably, the film-forming agent further includes at least one of the following components in parts by weight: 1-10 parts of polyimide resin, 1-10 parts of alkyd resin or 1-10 parts of phosphate;

[0026] Preferably, the solvent comprises deionized water;

[0027] Preferably, the stabilizer comprises at least one of silicon, aluminum or titanium; and / or, the stabilizer comprises a nitride and / or oxide of at least one of silicon, aluminum or titanium;

[0028] Further preferably, the stabilizer comprises at least one of the following components in parts by weight: 10-25 parts of silicon or 10-25 parts of aluminum;

[0029] Preferably, the colorant agent comprises titanium dioxide and / or titanium;

[0030] Preferably, the average particle size of the colorant is 0.01-0.5um;

[0031] Preferably, the average particle size of the stabilizer is 0.1-1 um.

[0032] The beneficial effects of the embodiments of the present application are different from those of the prior art: an atomizer is provided. The atomizer includes: an imitation ceramic metal part, the imitation ceramic metal part includes a metal substrate and a functional layer formed on the surface of the metal substrate; in this way, the functional layer can be selected to include a ceramic component according to actual needs to play the role of a ceramic part, and because the interior of the imitation ceramic metal part is a metal substrate, compared with the entire imitation ceramic metal part being a pure ceramic structure, the production cost can be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the overall structure of an atomizer provided in one embodiment of the present application;

[0034] Figure 2 for Figure 1 An AA sectional view of the atomizer shown;

[0035] Figure 3 A schematic diagram of the overall structure of a ceramic-like metal part provided in one embodiment of the present application;

[0036] Figure 4 A cross-sectional view of a side wall of a ceramic-like metal part provided in one embodiment of the present application;

[0037] Figure 5 A cross-sectional view of a side wall of a ceramic-like metal part provided in another embodiment of the present application;

[0038] Figure 6 A simplified structural diagram of an electronic atomization device provided in one embodiment of the present application;

[0039] Figure 7 A flow chart of a method for preparing a ceramic-like metal part provided in one embodiment of the present application.

[0040] Description of Figure Numbers:

[0041] 10-atomizer; 1-ceramic-like metal part; 11-metal substrate; 12-functional layer; 13-liquid outlet; 2-housing; 20-host. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0044] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0045] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0046] In the related art, the structures in contact with the atomized medium, such as the ceramic tube that cooperates with the shell to form the liquid storage cavity, are mostly made of pure ceramic. However, the production cost of pure ceramic structural parts is relatively high.

[0047] To this end, an embodiment of the present application provides an atomizer, an electronic atomization device and a method for preparing a ceramic-like metal part. The atomizer includes a ceramic-like metal part. The ceramic-like metal part forms a functional layer on the surface of a metal substrate to achieve the performance of a ceramic. At the same time, the use of a metal substrate can reduce costs.

[0048] See also Figures 1 to 4 , Figure 1 A schematic diagram of the overall structure of an atomizer provided in one embodiment of the present application; Figure 2 for Figure 1 An AA sectional view of the atomizer shown; Figure 3 A schematic diagram of the overall structure of a ceramic-like metal part provided in one embodiment of the present application; Figure 4A cross-sectional view of the side wall of a ceramic-like metal part provided in one embodiment of the present application. In this embodiment, an atomizer 10 is provided, which is used to atomize an atomizing medium to form an aerosol. The atomizer 10 includes a ceramic-like metal part 1, a housing 2, and an atomizing core. The atomizing medium is used to be heated to form an aerosol. The atomizing medium may be a solid matrix, which may include one or more of powders, particles, fragments, strips, or flakes of one or more plant leaves such as tobacco, vanilla leaves, tea leaves, mint leaves, etc.; alternatively, the solid matrix may contain additional volatile aroma compounds to be released when the matrix is ​​heated. Of course, the atomizing medium may also include a liquid matrix or a paste matrix, such as oils with added aroma components, liquid medicine, etc. The specific structure and function of the atomizer 10 can be referred to the existing atomizer, which will not be repeated here.

[0049] Combination Figure 2 , the imitation ceramic metal part 1 is arranged in the outer shell 2. In one embodiment, the outer wall surface of the side wall of the imitation ceramic metal part 1 is spaced apart from the inner wall surface of the outer shell 2, and cooperates to form a liquid storage chamber, which is used to store the atomizing medium. The inner wall surface of the side wall of the imitation ceramic metal part 1 defines an air outlet channel, and the imitation ceramic metal part 1 has a liquid outlet hole 13 that penetrates the inner wall surface and the outer wall surface of its side wall; the atomizing medium in the liquid storage chamber flows out through the liquid outlet hole 13. The atomizing core is arranged corresponding to the liquid outlet hole 13, which is used to atomize the atomizing medium flowing out of the liquid outlet hole 13 to form an aerosol, and the aerosol flows out of the atomizer 10 from the air outlet channel; the embodiment of the present application takes this as an example. Of course, in other embodiments, the imitation ceramic metal part 1 can also be used as other structural parts that may come into contact with the atomizing medium or aerosol; such as a base or bracket supporting the atomizing core.

[0050] See also Figure 4 The imitation ceramic metal part 1 includes a metal substrate 11 and a functional layer 12 formed on the surface of the metal substrate 11. The main body of the imitation ceramic metal part 1 is set to be a metal material, and the functional layer 12 is formed on the metal substrate 11; thus, the functional layer 12 can be selected to include a ceramic component according to actual needs to achieve the relevant performance of the structural part of the ceramic material, and compared with the structure of the entire imitation ceramic metal part 1 being a pure ceramic, the metal substrate 11 can greatly reduce the production cost of the imitation ceramic metal part 1.

[0051] Specifically, the metal substrate 11 is hollow, and the hollow metal substrate 11 has an inner surface and an outer surface opposite to each other. The inner surface of the metal substrate 11 is used to define the air outlet channel, and the outer surface of the metal substrate 11 is disposed toward the housing 2. The functional layer 12 is at least formed on the outer surface of the metal substrate 11. In a specific embodiment, Figure 4As shown, the functional layer 12 is formed on the outer surface of the metal substrate 11, and the functional layer 12 faces the liquid storage cavity; in order to prevent the atomized medium from directly contacting the outer wall of the imitation ceramic metal part 1, which may cause corrosion of the imitation ceramic metal part 1 and cause safety problems. Figure 5 , Figure 5 A cross-sectional view of the side wall of a ceramic-like metal part provided in another embodiment of the present application; the outer surface and the outer surface of the metal substrate 11 are both formed with a functional layer 12; in this way, the atomized medium or aerosol condensate entering the ceramic-like metal part 1 can be prevented from damaging the inner wall surface of the ceramic-like metal part 1 and affecting the smoking taste. Figure 5 The corresponding structure is used as an example for explanation.

[0052] Among them, since the roughness of the surface of the metal substrate 11 facing the functional layer 12 is too low, it is not conducive to the attachment of the functional layer 12; and the roughness of the surface of the metal substrate 11 facing the functional layer 12 is too high, which will affect the function of the functional layer 12 after attachment. Therefore, in one embodiment, the roughness of the surface of the metal substrate 11 facing the functional layer 12 is 0.5-1.5μm, for example, the roughness of the surface of the metal substrate 11 facing the functional layer 12 can be 0.5μm, 0.8μm, 1.1μm, 1.5μm, etc. The metal substrate 11 can be a stainless steel substrate, or other alloys, etc.

[0053] It should be noted that when the functional layer 12 is formed on the outer surface of the metal substrate 11, the surface of the metal substrate 11 facing the functional layer 12 in the present application is the outer surface of the metal substrate 11. When the functional layer 12 is formed on both the inner and outer surfaces of the metal substrate 11, the surface of the metal substrate 11 facing the functional layer 12 in the present application includes the outer and inner surfaces of the metal substrate 11.

[0054] If the thickness of the functional layer 12 is too thin, it is not conducive to the functional layer 12 being attached to the surface of the metal substrate 11, and it will affect the ceramic performance after the functional layer 12 is attached; if the thickness of the functional layer 12 is too thick, the cost will increase. Therefore, in some embodiments, the thickness h1 of the functional layer 12 is 5μm-25μm; for example, h1 can be 5μm, 10μm, 15μm, 20μm or 25μm, etc.

[0055] The roughness of the surface of the functional layer 12 facing away from the metal substrate 11 is 0.2-0.3 um, for example 0.2 um. In this way, the surface of the functional layer 12 can be smooth and bright, which greatly reduces the friction coefficient of the surface of the functional layer 12, enhances the wear resistance of the functional layer 12, and has an excellent appearance.

[0056] In one embodiment, the functional layer 12 includes an inorganic component. Specifically, the functional layer 12 includes a ceramic component. The ceramic component may be a nitride and / or oxide of at least one of silicon, aluminum, and titanium. Specifically, the ceramic component may be at least one of silicon nitride, aluminum nitride, aluminum oxide, aluminum nitride, or titanium oxide.

[0057] The functional layer 12 includes a film former, a stabilizer and a colorant. The functional layer 12 is obtained by spraying and curing the coating. The coating includes a solvent, a film former, a stabilizer, a colorant and an auxiliary. The coating includes the following components by weight: 20-40 parts of solvent, 10-50 parts of film former, 20-50 parts of stabilizer, 10-20 parts of colorant and 1-20 parts of auxiliary.

[0058] In some specific embodiments, the solvent includes deionized water. Water as a solvent is beneficial to environmental protection and health. In some other embodiments, no solvent may be added. The addition of solvent can better form the nano-scale functional layer 12, that is, the thickness of the functional layer 12 is controlled within the range of 5μm-25μm. At the same time, the solvent can allow the stabilizer to form a well-dispersed sol in the coating raw material, that is, silica sol, aluminum sol, etc., so as to facilitate the formation of a functional layer 12 with uniform composition during the film forming process.

[0059] The film-forming agent is used to solidify to form a stable and high-density film structure, so as to realize the insulation and encapsulation function of the ceramic-like metal part 1. The film-forming agent may specifically include epoxy resin substances. In combination with the selected solvent being water, in a preferred embodiment, the film-forming agent includes water-based epoxy resin.

[0060] In some particularly preferred embodiments, the film-forming agent further comprises at least one of the following components in parts by weight: 1-10 parts of polyimide resin, 1-10 parts of alkyd resin or 1-10 parts of phosphate.

[0061] The stabilizer is used to improve the stability, appearance and hardness of the functional layer 12 finally formed; the stabilizer includes at least one of silicon, aluminum or titanium; and / or the stabilizer includes a nitride and / or oxide of at least one of silicon, aluminum or titanium. Further preferably, the stabilizer includes at least one of the following components by weight: 10-25 parts of silicon or 10-25 parts of aluminum. The average particle size of the stabilizer is 0.1-1um; for example, 0.1um, 0.3um, 0.6um, 0.9um or 1um. The addition of silicon, aluminum, titanium, etc. or their nitrides or oxides is hybridized and cross-linked with epoxy resin-like substances, and a dense network structure is formed on the surface of the metal substrate 11 through bonding between elements such as silicon, aluminum, and oxygen, thereby forming a functional layer 12; the functional layer 12 has excellent high temperature resistance, resistance to cold and hot shocks, good thermal shock resistance, and resistance to high temperature corrosion. It can be understood that the stabilizer is also the source of the ceramic component in the functional layer 12. The ceramic component with extremely high stability can improve the stability and hardness of the functional layer 12 while also having the appearance characteristics of ceramics.

[0062] The coloring agent mainly plays the role of coloring agent, that is, the role of toning; the coloring agent includes titanium dioxide and / or titanium. The average particle size of the coloring agent is 0.01-0.5um; for example, 0.01um, 0.1um, 0.2um, 0.3um, 0.4um or 0.5um. It is understood that titanium dioxide can be directly added to the raw materials as a coloring agent. Titanium powder can also be selected and converted into titanium dioxide during the high temperature curing process.

[0063] The auxiliary agent includes at least one of the following components by weight: 1-10 parts of a curing agent, 1-5 parts of a leveling agent or 1-5 parts of a dispersant. The curing agent is used to react with the film-forming agent to form the functional layer 12; the curing agent includes fatty amine, alicyclic amine or polyamide. The dispersant can be a common dispersant, such as sodium dodecyl sulfate. The leveling agent includes acrylic acid and silicone.

[0064] After the above-mentioned coating slurry is mixed, the thickness of the functional layer 12 can be controlled by controlling the number of spraying, speed, discharge rate of the spray gun nozzle, etc. to achieve the desired thickness of the functional layer 12 of 5μm-25μm; for example, 5μm, 10μm, 15μm, 20μm or 25μm, etc.

[0065] In a specific embodiment, the coating can be sprayed onto the surface of the metal substrate 11 by spraying; then the coating is dried and cured. The drying and curing temperature is 150-300°C; preferably 200-300°C. Specifically, in the process of curing the coating on the surface of the metal substrate 11 to form a film, as the drying and curing temperature rises, the solvent in the coating evaporates continuously, the epoxy resin substance undergoes an oxidative polymerization reaction, and reacts with the curing agent to form a film; and at 150-300°C, a staggered network structure with a certain curing strength is formed.

[0066] Among them, the functional layer 12 is attached to the surface of the metal substrate 11 to form a ceramic-like metal part 1. Without changing the function of the original ceramic tube, the ceramic-like metal part 1 has low production cost, high strength, and high temperature resistance. The surface of the ceramic-like metal part 1 has good wear resistance, low surface energy, good chemical corrosion resistance, good thermal conductivity, good insulation, and high safety.

[0067] It has been verified that the surface energy of the functional layer 12 obtained in the above embodiment, which is away from the metal substrate 11, is greater than or equal to 1.5×10 -2 N / m and less than or equal to 1.9×10 -2 N / m; for example 1.6×10 -2 N / m, 1.7×10 -2 N / m or 1.8×10 -2 The surface of the functional layer 12 has extremely low surface energy, and other substances (such as stains or adhesions) are extremely difficult to adhere to the surface of the functional layer 12, so that the functional layer 12 has the effects of oleophobic, hydrophobic (water drop contact angle is 110 degrees), non-stick, and anti-fouling (stains and adhesions are very easy to clean), which effectively reduces the adhesion of the atomized medium on the surface of the functional layer 12, improves the utilization rate of the atomized medium, and enhances the consumer experience.

[0068] The thermal conductivity of the functional layer 12 is greater than or equal to 16w / (m·k) and less than or equal to 22w / (m·k); for example, the thermal conductivity of the functional layer 12 is 16w / (m·k), 20w / (m·k) or 22w / (m·k), etc. The thermal conductivity of the functional layer 12 is good.

[0069] The volume resistivity of the functional layer 12 is greater than 10 17 Ω·cm, the arc resistance of the functional layer 12 is greater than 300s; the functional layer 12 has excellent electrical insulation performance and good arc resistance.

[0070] The hardness of the functional layer 12 is greater than 8H. The functional layer 12 has excellent adhesion to the metal substrate 11, and in the 100-grid test, the 100-grid test reaches level 0.

[0071] Among them, since the functional component element in the functional layer 12 is at least one of aluminum, silicon or titanium, the safety risk of metal products directly soaking in atomized media such as sesame oil is greatly reduced, and the imitation ceramic metal part 1 has high safety. It has excellent chemical corrosion resistance, acid and alkali resistance, solvent resistance, and salt water boiling resistance.

[0072] Specifically, the roughness of the surface of the metal substrate 11 is in the range of 0.5-1.5 μm; for example, the roughness of the surface of the metal substrate 11 may be 0.5 μm, 0.8 μm, 1.1 μm, 1.5 μm, etc. If the roughness is too low, it is not conducive to the adhesion of the functional layer 12, and if the roughness is too high, it will affect the function of the functional layer 12 after adhesion.

[0073] The roughness of the surface of the metal substrate 11 can be controlled by a sandblasting process. The particle size of the high-speed hard particles in the sandblasting process is controlled within the range of 80-180 mesh, for example, 80 mesh, 100 mesh, 120 mesh, 140 mesh, 160 mesh or 180 mesh, etc. Specifically, the particles include at least one or more of silicon dioxide particles, silicon nitride particles, and silicon carbide particles.

[0074] Of course, the atomizer 10 also includes components such as an atomizer core and a filter. The specific structures and functions of these components are the same or similar to the specific structures and functions of related components in the existing atomizer, and can achieve the same or similar technical effects. For details, please refer to the prior art.

[0075] The atomizer 10 provided in this embodiment includes an imitation ceramic metal part 1, and the imitation ceramic metal part 1 includes a metal substrate 11 and a functional layer 12 formed on the surface of the metal substrate 11; in this way, the functional layer 12 can be selected to include a ceramic component according to actual needs to play the role of a ceramic part, and because the interior of the imitation ceramic metal part 1 is the metal substrate 11, compared with the entire imitation ceramic metal part 1 being a pure ceramic structure, the production cost can be greatly reduced. At the same time, it has both the anti-corrosion and safety characteristics of ceramics and the good thermal shock resistance and excellent mechanical properties of metals.

[0076] In one embodiment of the present application, see Figure 6 , Figure 6 A simplified structural diagram of an electronic atomization device provided in one embodiment of the present application; an electronic atomization device is also provided, which includes a host 20 and an atomizer 10. The atomizer 10 is the atomizer 10 provided in the above embodiment, and its specific structure and function can be referred to the above related description, which will not be repeated here. The host 20 is electrically connected to the atomizer 10 for supplying power to the atomizer 10.

[0077] In another embodiment of the present application, see Figure 7 , Figure 7 A flowchart of a method for preparing a ceramic-like metal part provided in one embodiment of the present application; a method for preparing a ceramic-like metal part 1 is provided, and the method can only be used to prepare the ceramic-like metal part 1 involved in the above embodiment. The method specifically includes:

[0078] Step S1: roughening the surface of the metal substrate so that the surface roughness of the metal substrate is 0.5-1.5 μm.

[0079] In a specific embodiment, the process for roughening the surface of the metal substrate 11 is a sandblasting process. Among them, the particulate matter can be high-speed hard particles. Using high-speed hard particles to act on the surface of the metal substrate 11 can not only improve the surface roughness of the metal substrate 11, but also increase the adhesion of the particulate matter on the surface of the metal substrate 11. Among them, since the particle size of the high-speed hard particles is too large or too small, it will affect the surface adhesion of the metal substrate 11; therefore, the particle size of the high-speed hard particles is controlled within the range of 80-180 mesh, for example, it can be 80, 100, 120, 140, 160, 180, etc. Specifically, the particulate matter includes at least one or more of silicon dioxide particles, silicon nitride particles, and silicon carbide particles.

[0080] Specifically, the roughness of the surface of the metal substrate 11 is in the range of 0.5-1.5 μm; for example, the roughness of the surface of the metal substrate 11 may be 0.5 μm, 0.8 μm, 1.1 μm, 1.5 μm, etc. If the roughness is too low, it is not conducive to the adhesion of the functional layer 12, and if the roughness is too high, it will affect the function of the functional layer 12 after adhesion.

[0081] Step S2: spraying paint on the surface of the roughened metal substrate.

[0082] In the production process of the specific embodiment, the coating includes a solvent, a film former, a stabilizer, a colorant and an auxiliary agent. Among them, the coating includes the following components by weight: 20-40 parts of solvent, 10-50 parts of film former, 20-50 parts of stabilizer, 10-20 parts of colorant and 1-20 parts of auxiliary agent. The solvent includes deionized water. The film former is used to solidify and form a stable and high-density film layer structure to achieve the insulation and encapsulation function of the ceramic metal part 1. The film former specifically includes epoxy resin substances; preferably, the film former includes water-based epoxy resin. Particularly preferably, the film former also includes at least one of the following components by weight: 1-10 parts of polyimide resin, 1-10 parts of alkyd resin or 1-10 parts of phosphate. The stabilizer is used to improve the stability of the functional layer 12 finally formed; the stabilizer includes at least one of silicon, aluminum or titanium; and / or the stabilizer includes a nitride and / or oxide of at least one of silicon, aluminum or titanium. Further preferably, the stabilizer includes at least one of the following components by weight: 10-25 parts of silicon or 10-25 parts of aluminum. The average particle size of the stabilizer is 0.1-1um; for example, 0.1um, 0.3um, 0.6um, 0.9um or 1um. The colorant mainly plays the role of colorant, that is, the toning effect; the colorant includes titanium dioxide and / or titanium. Among them, the average particle size of the colorant can be 0.01-0.5um; for example, 0.01um, 0.1um, 0.2um, 0.3um, 0.4um or 0.5um. The auxiliary agent includes at least one of the following components by weight: 1-10 parts of curing agent, 1-5 parts of leveling agent or 1-5 parts of dispersant. The curing agent is used to react with the film-forming agent to form the functional layer 12; the curing agent includes fatty amine, alicyclic amine or polyamide, etc. The dispersant can be a common dispersant, such as sodium dodecyl sulfate. The leveling agent includes: acrylic acid, silicone. The thickness of the functional layer 12 can be controlled by controlling the spraying times, speed, and discharge rate of the spray gun.

[0083] Step S3: curing the coating to form a functional layer; wherein the curing temperature is 150-300°C.

[0084] In the production process of the specific embodiment, the coating can be sprayed onto the surface of the metal substrate 11 by spraying; then the coating is dried and cured. The drying and curing temperature is 150-300°C; preferably 200-300°C. Specifically, in the process of curing the coating on the surface of the metal substrate 11 to form a film, as the drying and curing temperature rises, the solvent in the coating evaporates continuously, the epoxy resin substance undergoes an oxidative polymerization reaction, and reacts with the curing agent to form a film; and at 150-300°C, a staggered network structure with a certain curing strength is formed.

[0085] The preparation method of the imitation ceramic metal part 1 provided in this embodiment comprises providing a metal substrate 11; then roughening the surface of the metal substrate 11 so that the surface roughness of the metal substrate 11 is 0.5-1.5 μm; and then forming a functional layer 12 on the surface of the metal substrate 11 to obtain the imitation ceramic metal part 1. This method can form a functional layer 12 of ceramic material on the surface of the metal substrate 11 according to actual needs to play the role of a ceramic part, and since the interior of the imitation ceramic metal part 1 is the metal substrate 11, compared with the entire imitation ceramic metal part 1 being a pure ceramic structure, the production cost can be greatly reduced.

[0086] In other optional embodiments, a solid powder spraying process may also be used. That is, the coating raw material prepares the other components except the solvent into powder, and then sprays it on the surface of the metal substrate 11, and then cures the coating to form the functional layer 12. The average particle size of the powder may be 20-50um, for example, 20um, 30um, 40um or 50um. Other process parameters are the same as those described above and will not be repeated here.

[0087] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An atomizer, characterized in that: include: A ceramic-like metal part comprises a metal substrate and a functional layer formed on the surface of the metal substrate.

2. The atomizer according to claim 1, characterized in that The roughness of the surface of the metal substrate facing the functional layer is 0.5-1.5 μm.

3. The atomizer according to claim 1, characterized in that The thickness of the functional layer is 5 μm-25 μm.

4. The atomizer according to claim 1, characterized in that The metal substrate is a stainless steel substrate; The functional layer comprises a film former, a stabilizer and a colorant.

5. The atomizer according to claim 4, characterized in that The functional layer is obtained by spraying and curing the coating; wherein the coating comprises a solvent, a film former, a stabilizer, a colorant and an auxiliary agent; Preferably, the coating comprises the following components in parts by weight: 20-40 parts of solvent, 10-50 parts of film former, 20-50 parts of stabilizer, 10-20 parts of colorant and 1-20 parts of auxiliary agent; Preferably, the auxiliary agent includes at least one of the following components in parts by weight: 1-10 parts of a curing agent, 1-5 parts of a leveling agent or 1-5 parts of a dispersant; Preferably, the film-forming agent includes epoxy resin; further preferably, the film-forming agent includes water-based epoxy resin; particularly preferably, the film-forming agent further includes at least one of the following components in parts by weight: 1-10 parts of polyimide resin, 1-10 parts of alkyd resin or 1-10 parts of phosphate; Preferably, the solvent comprises deionized water; Preferably, the stabilizer comprises at least one of silicon, aluminum or titanium; and / or, the stabilizer comprises a nitride and / or oxide of at least one of silicon, aluminum or titanium; Further preferably, the stabilizer comprises at least one of the following components in parts by weight: 10-25 parts of silicon or 10-25 parts of aluminum; Preferably, the colorant agent comprises titanium dioxide and / or titanium; Preferably, the average particle size of the colorant is 0.01-0.5um; Preferably, the average particle size of the stabilizer is 0.1-1 um.

6. The atomizer according to claim 1, characterized in that The ceramic-like metal part meets at least one of the following conditions: The hardness of the functional layer is greater than 8H; The roughness of the surface of the functional layer facing away from the metal substrate is 0.2-0.3 um; The surface energy of the functional layer on the side away from the metal substrate is greater than or equal to 1.5×10 -2 N / m and less than or equal to 1.9×10 -2 N / m; The thermal conductivity of the functional layer is greater than or equal to 16w / (m·k) and less than or equal to 22w / (m·k); The volume resistivity of the functional layer is greater than 10 17 Ω·cm, and the arc resistance of the functional layer is greater than 300s.

7. The atomizer according to claim 1, characterized in that The atomizer further comprises a shell, the imitation ceramic metal part cooperates with the shell to form a liquid storage cavity, and the liquid storage cavity is used to store atomizing medium; the functional layer faces the liquid storage cavity.

8. An electronic atomization device, characterized in that: Comprising an atomizer as described in any one of claims 1-7.

9. A method for preparing a ceramic-like metal part, characterized in that: include: Roughening the surface of the metal substrate so that the surface roughness of the metal substrate is 0.5-1.5 μm; Spray coating on the surface of the roughened metal substrate; Curing the coating to form the functional layer; wherein the curing temperature is 150-300° C.; Preferably, the process for roughening the surface of the metal substrate is a sandblasting process; preferably, the particle size of the sandblasting in the sandblasting process is 80 meshes to 180 meshes.

10. The preparation method according to claim 9, characterized in that: The coating comprises a solvent, a film former, a stabilizer, a colorant and an auxiliary agent; Preferably, the coating comprises the following components in parts by weight: 20-40 parts of solvent, 10-50 parts of film former, 20-50 parts of stabilizer, 10-20 parts of colorant and 1-20 parts of auxiliary agent; Preferably, the auxiliary agent includes at least one of the following components in parts by weight: 1-10 parts of a curing agent, 1-5 parts of a leveling agent or 1-5 parts of a dispersant; Preferably, the film-forming agent includes epoxy resin; further preferably, the film-forming agent includes water-based epoxy resin; particularly preferably, the film-forming agent further includes at least one of the following components in parts by weight: 1-10 parts of polyimide resin, 1-10 parts of alkyd resin or 1-10 parts of phosphate; Preferably, the solvent comprises deionized water; Preferably, the stabilizer comprises at least one of silicon, aluminum or titanium; and / or, the stabilizer comprises a nitride and / or oxide of at least one of silicon, aluminum or titanium; Further preferably, the stabilizer comprises at least one of the following components in parts by weight: 10-25 parts of silicon or 10-25 parts of aluminum; Preferably, the colorant agent comprises titanium dioxide and / or titanium; Preferably, the average particle size of the colorant is 0.01-0.5um; Preferably, the average particle size of the stabilizer is 0.1-1 um.

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