CN111248514A - Carbon nano heating element for electrically heating cigarette smoking set - Google Patents
Carbon nano heating element for electrically heating cigarette smoking set Download PDFInfo
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- CN111248514A CN111248514A CN202010202554.5A CN202010202554A CN111248514A CN 111248514 A CN111248514 A CN 111248514A CN 202010202554 A CN202010202554 A CN 202010202554A CN 111248514 A CN111248514 A CN 111248514A
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- carbon nano
- heating element
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 96
- 238000010438 heat treatment Methods 0.000 title claims abstract description 82
- 230000000391 smoking effect Effects 0.000 title claims abstract description 17
- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 37
- 239000002002 slurry Substances 0.000 claims abstract description 33
- 239000011241 protective layer Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 23
- 239000011159 matrix material Substances 0.000 claims description 10
- 239000002086 nanomaterial Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000001913 cellulose Substances 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000002116 nanohorn Substances 0.000 claims 2
- 239000011230 binding agent Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 5
- 230000014759 maintenance of location Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229920002457 flexible plastic Polymers 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000005488 sandblasting Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- Resistance Heating (AREA)
- Surface Heating Bodies (AREA)
Abstract
The invention discloses a carbon nano heating element for electrically heating a cigarette smoking set, which comprises a rigid substrate (1), a carbon nano heating part (2), pins (3) and a protective layer (4); the rigid substrate (1) comprises a cavity (11) and an opening (12), the carbon nano heating part (2) is located in the cavity (11), one end of the pin (3) is at least partially located in the carbon nano heating part (2), and the other end of the pin penetrates out of one part of the carbon nano heating part (2) through the opening (12); the protective layer (4) is positioned outside the rigid substrate (1) and/or the carbon nano heating component (2). According to the invention, the carbon nano-slurry is directly attached to the rigid substrate, and the conductive pin is embedded in the carbon nano-slurry, so that the novel carbon nano-heating element is provided, and the problems of poor shape retention capability, low welding strength and large contact resistance of the conventional carbon nano-heating element are solved.
Description
Technical Field
The invention belongs to the field of heating non-combustible novel cigarette products, and particularly relates to a carbon nano heating element for an electric heating cigarette smoking set.
Background
Carbon nano heating elements commonly used for heating non-combustible cigarette smoking tools are usually flexible heating elements and have the advantages of high heating speed, uniform heating temperature and the like, but the flexible carbon nano heating elements do not have shape retention capacity and are attached to rigid materials by technological methods such as bonding and the like. The adhesive used in the bonding process may be chemically changed during the heating process of the cigarettes, some unknown gas is generated, and the smoking experience of the cigarettes is damaged. Meanwhile, the bonded carbon nano paper has a large falling risk in the use process, and the use reliability of the novel cigarette smoking set is reduced.
On the other hand, the current conductive pins of the carbon nano heating element are generally connected by adopting a welding method, but the problems of low welding strength and large contact resistance exist. When the smoking set is electrified to work, the contact part of the conductive pin and the flexible carbon nano heating element generates a large amount of heat due to large contact resistance, the temperature is rapidly increased, and the falling risk of the pin of the heating element is further increased.
The present invention has been made to solve the above problems.
Disclosure of Invention
According to the invention, the carbon nano-slurry is directly attached to the rigid substrate, and the conductive pin is embedded in the carbon nano-slurry, so that the novel carbon nano-heating element is provided, and the problems of poor shape retention capability, low welding strength and large contact resistance of the conventional carbon nano-heating element are solved.
The invention provides a carbon nano heating element for electrically heating a cigarette smoking set, which comprises a rigid substrate 1, a carbon nano heating part 2, pins 3 and a protective layer 4;
the rigid substrate 1 comprises a cavity 11 and an opening 12, the carbon nano heating element 2 is positioned in the cavity 11, one end of the pin 3 is at least partially positioned in the carbon nano heating element 2, and the other end of the pin penetrates out of one part of the carbon nano heating element 2 through the opening 12;
the protective layer 4 is located outside the rigid substrate 1 and/or the carbon nano heating element 2.
Preferably, the rigid substrate 1 is in the form of a sheet, a rod or a double-layer hollow tube. When the smoking set is a central heating smoking set, the heating element is a central heating sheet or a needle-shaped central heating rod; when the smoking set is a circumferential heating smoking set, the heating element is a circumferentially heating double-layer hollow tube.
When the rigid base body 1 is in a sheet shape, the cavity 11 is located inside the sheet-shaped rigid base material 1, wherein only part of the inside of the sheet-shaped rigid base material 1 can be hollowed to serve as the cavity 11, or one of two surfaces of the sheet-shaped rigid base material 1 can be removed, so that a groove extending from the surface to the opposite surface serves as the cavity 11, and at this time, the outer edge of the removed surface of the carbon nano heating element 2 and the outer edge of the removed surface of the rigid base body 1 are flush; when the rigid matrix 1 is in a rod shape, the cavity 11 is positioned inside the rod-shaped rigid substrate 1; when the rigid base body 1 is in a double-layer hollow pipe shape, the cavity 11 is positioned in a gap between the double-layer hollow pipes of the rigid base material 1.
Preferably, the cavity 11 is formed by a plane and/or a curved surface, and may be in any shape such as an elongated shape, a polygonal shape, and the like; the distribution of the carbon nano-slurry can be changed by changing the shape of the cavity, thereby changing the heating area of the electric heating element.
Preferably, the protective layer 4 is a high temperature resistant material, the high temperature resistant material can bear the temperature of 500 ℃ during the working time, and can be a high temperature resistant coating or a high temperature resistant flexible plastic, and the protective layer in contact with the rigid substrate 1 and the protective layer in contact with the carbon nano-slurry 2 can be the same material or different materials. Further preferably, the protective layer 4 can be made of a low-temperature protective glaze material, and both the protective layer in contact with the rigid substrate 1 and the protective layer in contact with the carbon nano-slurry 2 are made of low-temperature glaze. The protective layer 4 has a voltage insulation protection function, can prevent the heating slurry from being influenced by external corrosive gas or liquid, and prolongs the service life.
Preferably, the rigid substrate 1 is an insulating rigid material, which is selected from ceramics, glass, plastics or an insulating conductive material, and maintains the carbon nano slurry in a desired shape. That is, the rigid substrate 1 may be a ceramic material, such as but not limited to alumina ceramic, zirconia ceramic, silicon carbide ceramic, aluminum nitride ceramic, or a glass material, such as but not limited to quartz glass, high silica glass, borosilicate glass, or a high temperature resistant plastic, such as but not limited to Polyetheretherketone (PEEK) plastic, or Polyimide (PI) plastic. The rigid substrate 1 may also be an insulating conductive material, and may be, but not limited to, stainless steel, aluminum alloy, copper alloy, titanium alloy, and nickel alloy.
The preparation method of the carbon nano heating element comprises the following steps:
A. preparing a rigid substrate 1 having a cavity 11 and an opening 12; the rigid matrix 1 can be prepared by selecting the materials of the rigid matrix 1 and carrying out the conventional procedures of mixing, compression molding, drying, degreasing, sintering and the like;
B. injecting carbon nano-slurry into the cavity 11 in a grouting manner, burying at least one part of one end of the pin 3 into the hole 2, penetrating the other end of the pin out of the part of the open hole 12, and drying;
C. covering a high-temperature-resistant material on the outer side of the rigid substrate 1 and/or the carbon nano heating part 2 to obtain the carbon nano heating element, wherein the high temperature resistance can bear the temperature of 500 ℃ in the working time, and when the material of the protective layer 4 is a high-temperature-resistant coating, the high-temperature-resistant coating can be coated on the outer surface of the rigid substrate 1 and/or the carbon nano heating part 2; when the material of the protective layer 4 is high-temperature-resistant flexible plastic, the protective layer can be directly coated on the outer surface of the rigid substrate 1 and/or the outer surface of the carbon nano heating component 2.
The conductive pins 3 are pre-embedded in the carbon nano-slurry and directly contact with the carbon nano-slurry. The conductive pins 3 are fixed on the rigid substrate 1 through carbon nano-slurry, and can be completely or partially covered by the carbon nano-slurry. And after curing, the conductive pin, the carbon nano slurry and the rigid matrix form a whole. Preferably, the surface of the conductive pin can be subjected to sand blasting treatment, so that the surface roughness of the pin is increased, and the contact area of the pin and the carbon nano-slurry is increased.
Preferably, the carbon nano-slurry is a mixture mainly containing carbon nano-materials, and on the basis of weight percentage, the mass of the carbon nano-materials is 50-80% of the mass of the carbon nano-slurry, and the balance is cellulose, an adhesive, a stabilizer or a surfactant. Further preferably, the mass percentage of the carbon nanomaterial in the carbon nanopaste is 65%.
The carbon nano-slurry 2 is a resistance heating slurry, the sheet resistance value is between 5mohm/sq and 100mohm/sq, and can be adjusted according to the resistance of the electric heating element and the pattern requirement. Further preferably, the sheet resistance of the carbon nano-slurry is between 45mohm/sq and 60 mohm/sq.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, carbon nano-slurry is directly poured into the cavity 11 of the rigid substrate 1, the dried carbon nano-heating component 2 is directly attached to the rigid substrate 1, the cavity 11 can be in any shape such as a strip shape, a polygonal shape and the like, and the distribution of the carbon nano-slurry can be changed by changing the shape of the cavity, so that the heating area of the electric heating element is changed. Furthermore, the invention solves the problems that the adhesive used for adhering the flexible carbon nano paper to the rigid substrate by adopting the adhesion process in the prior art generates unknown gas in the cigarette heating process to destroy the smoking experience of the cigarette and the carbon nano paper is easy to fall off in the using process, and improves the use reliability of the cigarette smoking set which is heated and does not burn.
2. According to the invention, the carbon nano heating component 2 directly buries the conductive pin in the carbon nano slurry to be dried together with the carbon nano slurry, so that the problems of low welding strength, large contact resistance and easy falling of the pin after the temperature is raised of the conductive pin in the prior art are solved.
3. The carbon nano heating element comprises a protective layer 4, wherein the protective layer 4 is made of a high-temperature-resistant material, can bear the temperature of 500 ℃ in working time and can be a high-temperature-resistant coating or high-temperature-resistant flexible plastic. The protective layer 4 has a voltage insulation protection function, can prevent the heating slurry from being influenced by external corrosive gas or liquid, and prolongs the service life.
Drawings
FIG. 1 is a schematic structural view of a carbon nano-heating element of the present invention;
FIG. 2 is a partial cross-sectional view of the carbon nano-heating element of the present invention taken along plane B-B;
FIG. 3 is a schematic structural view of a rigid substrate 1 of the carbon nano-heating element of the present invention;
fig. 4 is a cross-sectional view of the rigid substrate 1 of the carbon nano-heating element of the present invention taken along plane a-a.
Names of reference symbols in the description of the drawings: 1. rigid substrate, 2, carbon nano heating part, 3, pin, 4, protective layer, 11, cavity, 12 and opening.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following examples and drawings, which are given by way of illustration and not by way of limitation.
The embodiment is a carbon nano heating element for electrically heating a cigarette smoking set, and is shown in fig. 1, and fig. 3 is a structural schematic diagram of a rigid base 1 body. In this embodiment, the heating element structure is sheet-like.
Alumina ceramic powder is selected, and the rigid matrix 1 with the alumina content of 96 percent is prepared through the working procedures of material mixing, compression molding, drying degreasing, sintering and the like.
In the present embodiment, as shown in fig. 3, the cavity of the rigid substrate 1 is composed of 5 planes, that is, one of the two sides of the rigid substrate 1 is removed to form a recess extending from the opposite side as the cavity 11, and the carbon nano heating element 2 is flush with the outer edge of the removed side of the rigid substrate 1. After the rigid substrate 1 is sintered, the cavity 11 of the rigid substrate 1 is processed by adopting a sand blasting process, so that the surface roughness of the cavity 11 is increased.
Uniformly mixing a carbon nano material, cellulose, an adhesive, a stabilizer and a surfactant, wherein the mass percentage of the carbon nano material is 65%, and the sheet resistance of the carbon nano slurry is 40-45 mohm/sq.
The outer surface of the pin 3 is processed by adopting a sand blasting process, so that the surface roughness of the pin 3 is increased.
The conductive pins 3 are fixed to the rigid base 1 by an external jig.
And (3) pouring the carbon nano slurry into the cavity of the rigid matrix 1, standing and drying, wherein the drying temperature is set to be 120 ℃.
Respectively and uniformly coating the same low-temperature glaze (bearing the temperature of 260 ℃ at the lowest) on the rigid matrix 1 and the carbon nano slurry 2, wherein the sintering temperature of the low-temperature glaze is 450-500 ℃.
Claims (9)
1. A carbon nano heating element for electrically heating a cigarette smoking set is characterized by comprising a rigid substrate (1), a carbon nano heating part (2), pins (3) and a protective layer (4);
the rigid substrate (1) comprises a cavity (11) and an opening (12), the carbon nano heating part (2) is located in the cavity (11), one end of the pin (3) is at least partially located in the carbon nano heating part (2), and the other end of the pin penetrates out of one part of the carbon nano heating part (2) through the opening (12);
the protective layer (4) is positioned outside the rigid substrate (1) and/or the carbon nano heating component (2).
2. Carbon nano-heating element according to claim 1, characterized in that the rigid matrix (1) is sheet-like, rod-like or double-layered hollow tubular.
3. Carbon nano-heating element according to claim 2, characterized in that when the rigid matrix (1) is sheet-like, the cavity (11) is located inside the sheet-like rigid substrate (1); when the rigid base body (1) is in a rod shape, the cavity (11) is positioned inside the rod-shaped rigid base material (1); when the rigid base body (1) is in a double-layer hollow tube shape, the cavity (11) is positioned in a gap between the double-layer hollow tubes of the rigid base material (1).
4. Carbon nano-heating element according to claim 1, characterized in that the cavity (11) is formed by a plane and/or a curved surface.
5. The carbon nano-heating element according to claim 1, wherein the protective layer 4 is a high temperature resistant material, which can withstand temperatures up to 500 ℃ during operation time.
6. Carbon nano-heating element according to claim 1, characterized in that the rigid matrix (1) is an insulating rigid material selected from ceramics, glass, plastics or an insulated conductive material.
7. The carbon nano-heating element according to claim 1, wherein the preparation method thereof comprises the steps of:
A. preparing a rigid substrate (1) having a cavity (11) and an opening (12);
B. injecting carbon nano-slurry into the cavity (11) in a grouting manner, burying at least one part of one end of the pin (3) into the hole (2), penetrating the other end of the pin out of one part of the hole (12), and drying;
C. and covering a high-temperature-resistant material on the outer side of the rigid substrate (1) and/or the carbon nano heating part (2) to obtain the carbon nano heating element, wherein the high temperature resistance can bear the temperature of 500 ℃ in the working time.
8. The carbon nanoscopic heating element of claim 7, wherein the carbon nanoscopic slurry comprises carbon nanomaterials, and further comprises cellulose, a binder, a stabilizer, or a surfactant, wherein carbon nanomaterials comprise 50% to 80% of the carbon nanoscopic slurry, on a weight basis.
9. The carbon nanohorn heating element of claim 7, wherein the carbon nanohorn slurry sheet resistance is from 5mohm/sq to 100 mohm/sq.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010202554.5A CN111248514A (en) | 2020-03-20 | 2020-03-20 | Carbon nano heating element for electrically heating cigarette smoking set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010202554.5A CN111248514A (en) | 2020-03-20 | 2020-03-20 | Carbon nano heating element for electrically heating cigarette smoking set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111248514A true CN111248514A (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010202554.5A Pending CN111248514A (en) | 2020-03-20 | 2020-03-20 | Carbon nano heating element for electrically heating cigarette smoking set |
Country Status (1)
| Country | Link |
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| CN (1) | CN111248514A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113171734A (en) * | 2020-12-01 | 2021-07-27 | 深圳市卓力能技术有限公司 | Heating assembly, assembling method thereof and aerosol generating device |
| WO2022062444A1 (en) * | 2020-09-23 | 2022-03-31 | 深圳麦克韦尔科技有限公司 | Heating assembly and aerosol forming device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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