CN-121986977-A - Heating element, aerosol generating device and preparation method

Abstract

The invention provides a heating element, an aerosol generating device and a preparation method, and relates to the technical field of electronic atomization. The heating element comprises a heating substrate, a protective functional layer arranged on the surface of the heating substrate, wherein the protective functional layer is used for isolating an atomization matrix from the heating substrate, and the protective functional layer comprises at least one of TiN, alO, au, tiC, alN, si 3 N 4 , siC, crN, crC and TaN. The heating element provided by the invention can prevent the metal of the heating base material from being corroded after being contacted with tobacco tar for a long time through the protection functional layer, so that the heavy metal precipitation amount of the heavy metal under the same condition is delayed and reduced.

Inventors

• CHENG LE
• ZHAO YUEYANG
• Wang tianye
• LIU ZHIQIANG

Assignees

• 爱奇迹创造有限公司

Dates

Publication Date

20260508

Application Date

20241107

Claims (10)

1. 1. The heating element is characterized by comprising a heating substrate and a protective functional layer arranged on the surface of the heating substrate; The protective functional layer is used for isolating the atomizing matrix from the heating substrate; the functional material of the protective functional layer comprises at least one of TiN, alO, au, tiC, alN, si 3 N 4 , siC, crN, crC and TaN.
2. 2. The heat-generating element of claim 1, wherein the heat-generating element further comprises an absorbent layer; the absorption layer is positioned on the surface of the protection function layer; The absorption layer is used for absorbing heavy metal elements in the atomization matrix.
3. 3. The heating element of claim 2 wherein said absorber layer comprises high adsorption capacity chemical groups; The chemical group includes at least one of an amino group, a carboxyl group, a mercapto group, and a hydroxyl group.
4. 4. A heating element according to any one of claims 1-3, wherein the thickness of the protective functional layer is 0.05 μm to 3 μm.
5. 5. An aerosol-generating device comprising a heating element according to any of claims 1-4.
6. 6. A method of manufacturing a heating element, comprising: Pretreating a metal substrate to obtain a heated substrate; Obtaining a functional material for forming a protective functional layer; And forming the protective function layer on the surface of the heated substrate by using a physical deposition technology or a chemical deposition technology, wherein the physical deposition technology comprises at least one of a magnetron sputtering process and/or a multi-arc ion plating process, and the chemical deposition technology comprises an electroless plating process.
7. 7. The method of manufacturing a heating element as claimed in claim 6, wherein the process parameters of the magnetron sputtering process include: The working gas comprises at least one of argon, nitrogen and oxygen; the target material comprises at least one of a titanium target, an aluminum target, a chromium target and a silicon target; the range of the working pressure is 10 -5 Pa～10 -1 Pa; The deposition time is 30-60 minutes.
8. 8. The method of manufacturing a heating element as claimed in claim 6, wherein the process parameters of the multi-arc ion plating process include: the deposition time is 30-180 minutes; The deposition temperature is 200-350 ℃; The current of the electric arc is 30A-150A; The voltage of the electric arc is 30V-80V; The working gas comprises at least one of argon, nitrogen and oxygen, wherein if the working gas is argon, the air flow is 20 sccm-100 sccm, if the working gas is oxygen or nitrogen, the air flow is 5 sccm-30 sccm, and/or, The rotation speed of the heating base material is 5 rpm-30 rpm.
9. 9. The method of manufacturing a heat generating component as recited in claim 6, wherein the chemical deposition technique comprises: Preparing electroplating solution according to the target material; Placing the heating base material into an electroplating container provided with the electroplating liquid, taking the heating base material as a cathode and taking the target material as an anode; And applying current to the cathode and the anode through the electroplating container, and depositing on the surface of the heating substrate to form the protective function layer, wherein the technological parameters of the chemical deposition technology comprise: the current is direct current or pulse current; the current density is 1A/dm 2 ～5A/dm 2 ; the electroplating solution comprises a salt compound containing the target material and at least one of a brightening agent, a buffering agent and a stabilizing agent, and/or, The pH value of the electroplating solution is 4-7, and/or, The target material is gold.
10. 10. The method of manufacturing a heat generating element as defined in claim 6, further comprising: carrying out surface modification treatment on the protective function layer so as to form an absorption layer on the surface of the protective function layer; the absorption layer includes a high adsorption capacity chemical group including at least one of an amino group, a carboxyl group, a mercapto group, and a hydroxyl group.

Description

Heating element, aerosol generating device and preparation method Technical Field The application relates to the technical field of electronic atomization, in particular to a heating element, an aerosol generating device and a preparation method. Background An aerosol-generating device is a device that converts an atomized matrix into an aerosol. In a technical implementation of an aerosol-generating device, a heat generating component, such as a heat generating wire, plays a vital role. At present, heating components in the market are mostly made of materials such as iron-chromium-aluminum alloy, nickel-chromium-iron alloy, stainless steel and the like. However, in acidic tobacco tar environments, particularly during high temperature heating, these materials are susceptible to accelerated corrosion, resulting in increased release of heavy metal ions and thus increased heavy metal content in the aerosol. Heavy metals such as nickel, chromium, lead, cadmium, etc. are of great concern because of their potential harm to human health. These metal elements may be separated out from the heating element and its lead wire during use of the aerosol generating device, and pose a threat to human health as the aerosol is inhaled by the user. Nickel, a known allergen and potential carcinogen, long-term inhalation may lead to respiratory and dermatological diseases. Chromium, particularly hexavalent chromium, has a high carcinogenicity and long-term exposure can cause lung cancer and other serious health problems. Lead and cadmium also have serious toxic effects on the nervous system, kidney function and bones. Therefore, there is a need for a heating element that can effectively reduce the amount of heavy metals that are precipitated. Disclosure of Invention The first object of the present invention is to provide a heating element, an aerosol generating device, and a method for manufacturing a heating element, which can prevent the metal of a heating substrate from being corroded after contacting with tobacco tar for a long time by protecting a functional layer, thereby retarding and reducing the amount of heavy metal deposition under the same conditions. In order to achieve the above object of the present invention, the following technical solutions are specifically adopted: The invention provides a heating element, which comprises a heating substrate and a protective functional layer arranged on the surface of the heating substrate, wherein the protective functional layer is used for isolating an atomization matrix from the heating substrate, and the functional material of the protective functional layer comprises at least one of TiN, alO, au, tiC, alN, si 3N4, siC, crN, crC and TaN. In an alternative embodiment, the heating element further comprises an absorption layer, wherein the absorption layer is located on the surface of the protection function layer and is used for absorbing heavy metal elements in the atomization matrix. In an alternative embodiment, the absorbent layer includes a chemical group having a high adsorption capacity, and the chemical group includes at least one of an amino group, a carboxyl group, a mercapto group, and a hydroxyl group. In an alternative embodiment, the thickness of the protective functional layer is 0.05 μm to 3 μm. The present invention provides an aerosol-generating device comprising a heating element as described above. The invention provides a preparation method of a heating element, which comprises the steps of preprocessing a metal substrate to obtain a heating substrate, obtaining a functional material for forming a protective functional layer, and forming the protective functional layer on the surface of the heating substrate by utilizing a physical deposition technology or a chemical deposition technology, wherein the physical deposition technology comprises at least one of a magnetron sputtering technology and/or a multi-arc ion plating technology, and the chemical deposition technology comprises an electroless plating technology. In an alternative embodiment, the technological parameters of the magnetron sputtering process comprise at least one of argon, nitrogen and oxygen, at least one of a titanium target, an aluminum target, a chromium target and a silicon target, the working pressure is 10 -5Pa～10-1 Pa, and the deposition time is 30-60 minutes. In an alternative embodiment, the process parameters of the multi-arc ion plating process comprise a deposition time of 30-180 minutes, a deposition temperature of 200-350 ℃, an electric arc current of 30-150A, an electric arc voltage of 30-80V, a working gas comprising at least one of argon, nitrogen and oxygen, wherein if the working gas is argon, the air flow is 20-100 sccm, if the working gas is oxygen or nitrogen, the air flow is 5-30 sccm, and/or the rotating speed of the heating substrate is 5-30 rpm. In an alternative embodiment, the chemical deposition technology comprises preparing an electroplating solution acco