CN112189904A - Durable heating wire and preparation process thereof - Google Patents
Durable heating wire and preparation process thereof Download PDFInfo
- Publication number
- CN112189904A CN112189904A CN202011209960.0A CN202011209960A CN112189904A CN 112189904 A CN112189904 A CN 112189904A CN 202011209960 A CN202011209960 A CN 202011209960A CN 112189904 A CN112189904 A CN 112189904A
- Authority
- CN
- China
- Prior art keywords
- heating
- heating shell
- conductive core
- shell
- heating wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 105
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 239000011521 glass Substances 0.000 claims description 15
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 14
- 229920000877 Melamine resin Polymers 0.000 claims description 11
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000005429 filling process Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 239000003571 electronic cigarette Substances 0.000 description 9
- 235000019504 cigarettes Nutrition 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 241000208125 Nicotiana Species 0.000 description 4
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 4
- 229960002715 nicotine Drugs 0.000 description 4
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 240000008415 Lactuca sativa Species 0.000 description 1
- 235000003228 Lactuca sativa Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/10—Devices using liquid inhalable precursors
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/70—Manufacture
Landscapes
- Resistance Heating (AREA)
Abstract
The invention discloses a durable heating wire and a preparation process thereof, wherein the heating wire comprises a conductive core and a heating shell, the heating shell is of a hollow tubular structure, the conductive core is positioned in the hollow structure of the heating shell, and the wall thickness of the heating shell is 0.2-0.4 mm.
Description
Technical Field
The invention relates to the technical field of heating wires for electronic cigarettes, and particularly belongs to a durable heating wire and a preparation process thereof.
Background
The most harmful of the traditional cigarette is the use mode, namely burning. The harmful gas produced by burning tobacco leaves and the harmful gas produced by burning lettuce are almost the same. That is, the greatest harm in the conventional cigarette comes from the lagging mode of use, in view of the factor of discarding nicotine. Burning a single cigarette produces more than 6000 compounds, many of which are identified as carcinogens. The harm of the traditional cigarette and the harm of the second-hand smoke peculiar to the traditional cigarette are known in the world at present. The ideal solution is that the traditional cigarette disappears. However, such a utopia illusion is not possible. The birth of the electronic cigarette is under such a background. The main principle is to remove harmful substances generated by burning in the traditional cigarette on the basis of ensuring the safe intake of nicotine. The approach of obtaining nicotine is safer.
The electronic cigarette has the working principle that electric energy is converted into heat energy, and the heat energy is vaporized like tobacco tar. Then the vaporized smoke mist is inhaled. Thereby achieving the purpose of nicotine intake. Like a humidifier, except that the humidifier vaporizes water. And the electronic cigarette vaporizes tobacco tar. The greatest benefit of vaporization is that it is a physical change that does not create new matter, and therefore the e-cigarette is less harmful than a conventional cigarette. The conventional electronic cigarette heating wire has short service life, and the main reason is that the surface of the heating wire is easily corroded and damaged due to poor dirt resistance.
Disclosure of Invention
The invention aims to provide a durable heating wire and a preparation process thereof, and solves the problem of poor durability of the heating wire used in the electronic cigarette in the prior art.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a durable heating wire comprises a conductive core and a heating shell, wherein the heating shell is of a hollow tubular structure, the conductive core is located in the hollow structure of the heating shell, and the wall thickness of the heating shell is 0.2-0.4 mm.
Preferably, the heating shell is made of a chromium-nickel alloy material.
Preferably, the conductive core is prepared from raw materials including carbon powder, glass powder, melamine and chrome yellow.
Preferably, the preparation method of the conductive core comprises the steps of uniformly mixing the carbon powder, the glass powder and the chrome yellow, then adding the mixture into the melamine solution, uniformly stirring and mixing, then drying and crushing to obtain the powdery conductive core.
The process for preparing the durable heating wire comprises the following steps,
s1, immersing the heating shell into an ethanol solution, cleaning, taking out and drying to obtain a clean heating shell;
s2, sealing one end of the clean heating shell, then filling the conductive core into the heating shell, and carrying out ultrasonic vibration in the filling process;
s3, after the conductive core is filled, bending the heating shell into a required shape, then heating the heating shell in an oxygen-free environment at the temperature of 700 and 900 ℃, then cooling to room temperature, and shaping;
s4, sealing the other end of the shaped heating shell to obtain a heating wire blank, then connecting the two ends of the heating wire blank with a power supply to raise the temperature of the heating wire to 500-700 ℃, and then cooling to room temperature to obtain the heating wire.
Compared with the prior art, the invention has the following implementation effects:
1. the invention takes carbon powder as a substrate, the carbon powder is fully mixed with glass powder, melamine and chrome yellow, so that the conductive core generates conductive capability under the conduction action of carbon, the heating shell of the electric heating wire can heat the carbon in the heating shell in the process of electric heating, under the action of current and heat, carbon atoms in the carbon powder permeate into the heating shell, the strength of the heating shell is improved, meanwhile, because the thickness of the heating shell is thinner, the carbon atoms continuously permeate into the heating shell, the carbon atoms on the surface of the outer surface of the heating shell, which is contacted with the air, are oxidized by the air to form carbon dioxide, carbon dioxide gas is continuously generated on the outer surface of the heating shell, meanwhile, the carbon atoms in the heating shell permeate outwards, and carbon is continuously supplemented on the outer surface of the heating shell, so that the electric heating wire is not easy to be polluted when being used for electronic cigarettes, can still keep better cleanliness after long-term use.
2. According to the invention, the glass powder is used as the filler of the conductive core, the glass powder can be melted in the heating process of the conductive core, the carbon powder and chrome yellow are bonded, the conductive core in the heating wire blank after heat treatment can be hardened, the heating wire is shaped, and the added glass powder also has an insulating effect, so that the heating shell of the electric heating wire cannot be sufficiently heated due to the excellent conductive capacity of the carbon powder, and meanwhile, in the actual use process of the heating wire, the glass powder is re-melted and softened, so that the bonded carbon powder is released, and carbon can be effectively supplemented to the heating shell.
3. The chrome yellow and the melamine are used as the additives of the conductive core, the chrome yellow can play a role in slowing down carburization, the problem that the heating shell becomes brittle and is easy to break due to over carburization is avoided, meanwhile, the melamine is decomposed to generate nitrogen-containing substances in the process of preparing the heating wire, so that the conductive core of the finally prepared heating wire contains nitrogen elements, the heating wire can be subjected to proper nitriding in the using process, the structural strength of the heating shell is improved, and the problem that the service life is shortened due to the fact that the strength of the heating wire is reduced quickly at high temperature is solved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Crushing carbon powder to below 200 meshes, uniformly mixing the carbon powder, glass powder and chrome yellow with the particle size of less than 200 meshes according to the mass ratio of 8:3:2, adding 2kg of the uniformly mixed carbon powder, glass powder and chrome yellow into 3kg of methanol solution containing 2 wt% of melamine, heating to 50 ℃, stirring and mixing until the methanol is evaporated to dryness, crushing the mixture, and sieving through a 200-mesh sieve to obtain a powdery conductive core.
Soaking a tubular heating shell with a hollow structure into an ethanol solution for cleaning, taking out the heating shell with the wall thickness of 0.2mm, drying to obtain a clean heating shell, sealing one end of the clean heating shell, filling a powdery conductive core into the heating shell, and tightly filling the conductive core in the heating shell by ultrasonic vibration in the filling process; after the conductive core is filled, bending the heating shell into a required shape, then placing the heating shell in an oxygen-free environment at 800 ℃ for heating, then cooling to room temperature, shaping, and sealing the other end of the shaped heating shell to obtain a heating wire blank; and finally, connecting power supplies at two ends of the heating wire blank to enable the temperature of the heating wire to rise to 600 ℃, and cooling to room temperature to obtain the heating wire.
Example 2
Crushing carbon powder to below 200 meshes, uniformly mixing the carbon powder, glass powder and chrome yellow with the particle size of less than 200 meshes according to the mass ratio of 8:4:1, adding 2.6kg of the uniformly mixed carbon powder, glass powder and chrome yellow into 3kg of methanol solution containing 2 wt% of melamine, heating to 60 ℃, stirring and mixing until the methanol is evaporated to dryness, crushing the mixture, and sieving through a 200-mesh sieve to obtain the powdery conductive core.
Soaking a tubular heating shell with a hollow structure into an ethanol solution for cleaning, taking out the heating shell with the wall thickness of 0.25mm, drying to obtain a clean heating shell, sealing one end of the clean heating shell, filling a powdery conductive core into the heating shell, and tightly filling the conductive core in the heating shell by ultrasonic vibration in the filling process; after the conductive core is filled, bending the heating shell into a required shape, then placing the heating shell in an oxygen-free environment at 850 ℃ for heating, then cooling to room temperature, shaping, and sealing the other end of the shaped heating shell to obtain a heating wire blank; and finally, connecting power supplies at two ends of the heating wire blank to enable the temperature of the heating wire to rise to 700 ℃, and cooling to room temperature to obtain the heating wire.
Comparative example 1
The difference from example 1 is that the amount of glass frit added is 0.
Comparative example 2
The difference from example 1 is that the melamine addition was 0.
Comparative example 3
The difference from example 1 is that chrome yellow is added in an amount of 0.
The heating wires of examples 1-2 and comparative examples 1-3 were tested for fast life value and elongation after breakage at 1200 ℃ according to the test method in GB/T1234-1995, and for the condition of simulating surface cleanliness of the electronic cigarette after smoking the tobacco tar for 2 hours at 600 ℃, and the results are shown in the following table:
| fast life value/h | Elongation after break/% | Degree of surface cleanliness | |
| Example 1 | 116 | 24 | No dirt on the surface |
| Example 2 | 123 | 26 | No dirt on the surface |
| Comparative example 1 | 112 | 33 | No dirt on the surface |
| Comparative example 2 | 96 | 30 | With a small amount of surface contamination |
| Comparative example 3 | 101 | 18 | No dirt on the surface |
As can be seen from the above table, the present invention uses the conductive core made of carbon powder, melamine, glass powder and chrome yellow, so that the service life and the anti-fouling capability of the heating wire are greatly improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A durable heating wire, characterized in that: the heating shell is of a hollow tubular structure, the conductive core is positioned in the hollow structure of the heating shell, and the wall thickness of the heating shell is 0.2-0.4 mm.
2. A durable heat-generating wire as defined in claim 1, wherein: the heating shell is made of a chromium-nickel alloy material.
3. A durable heat-generating wire as defined in claim 1, wherein: the conductive core is prepared from raw materials including carbon powder, glass powder, melamine and chrome yellow.
4. A durable heat-generating wire as defined in claim 3, wherein: the preparation method of the conductive core comprises the steps of uniformly mixing carbon powder, glass powder and chrome yellow, then adding the mixture into a melamine solution, uniformly stirring and mixing, and then drying and crushing to obtain the powdery conductive core.
5. A process for producing the durable heat-generating wire according to any one of claims 1 to 5, characterized in that: comprises the following steps of (a) carrying out,
s1, immersing the heating shell into an ethanol solution, cleaning, taking out and drying to obtain a clean heating shell;
s2, sealing one end of the clean heating shell, then filling the conductive core into the heating shell, and carrying out ultrasonic vibration in the filling process;
s3, after the conductive core is filled, bending the heating shell into a required shape, then heating the heating shell in an oxygen-free environment at the temperature of 700 and 900 ℃, then cooling to room temperature, and shaping;
s4, sealing the other end of the shaped heating shell to obtain a heating wire blank, then connecting the two ends of the heating wire blank with a power supply to raise the temperature of the heating wire to 500-700 ℃, and then cooling to room temperature to obtain the heating wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011209960.0A CN112189904A (en) | 2020-11-03 | 2020-11-03 | Durable heating wire and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011209960.0A CN112189904A (en) | 2020-11-03 | 2020-11-03 | Durable heating wire and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112189904A true CN112189904A (en) | 2021-01-08 |
Family
ID=74032999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011209960.0A Pending CN112189904A (en) | 2020-11-03 | 2020-11-03 | Durable heating wire and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112189904A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB671802A (en) * | 1949-07-20 | 1952-05-07 | British Thomson Houston Co Ltd | Improvements in and relating to magnetic iron cores |
| JPH02209979A (en) * | 1988-09-30 | 1990-08-21 | Nippon Synthetic Chem Ind Co Ltd:The | Coating composition for coated steel sheet |
| JPH03182527A (en) * | 1989-12-13 | 1991-08-08 | Dainichiseika Color & Chem Mfg Co Ltd | Conductive colored flooring plastic chip |
| JP2005048968A (en) * | 2003-07-29 | 2005-02-24 | Nippon Denki Keiki Kenteisho | Electric furnace |
| KR20060117732A (en) * | 2005-05-13 | 2006-11-17 | 함창화 | Rod-shaped heating conductor |
| US20110291429A1 (en) * | 2010-05-28 | 2011-12-01 | Flat Rock Metal Inc. | Process for Coating Metal Components With a Coating That Prevents Electrochemical Plating |
| KR101549344B1 (en) * | 2014-06-30 | 2015-09-11 | 주식회사 유니웜 | Ceramic heat element |
| US20160148725A1 (en) * | 2013-07-19 | 2016-05-26 | Dow Global Technologies Llc | Cable with polymer composite core |
| KR20170052915A (en) * | 2015-11-05 | 2017-05-15 | 동양로지텍(주) | Method of manufacturing pyrexia wire and a pyrexia wire produced by this method |
| CN109193213A (en) * | 2018-09-07 | 2019-01-11 | 四川力智久创知识产权运营有限公司 | A kind of Graphene electrodes |
| CN111000293A (en) * | 2019-12-05 | 2020-04-14 | 东莞市陶陶新材料科技有限公司 | Electronic cigarette atomization core and preparation method thereof |
-
2020
- 2020-11-03 CN CN202011209960.0A patent/CN112189904A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB671802A (en) * | 1949-07-20 | 1952-05-07 | British Thomson Houston Co Ltd | Improvements in and relating to magnetic iron cores |
| JPH02209979A (en) * | 1988-09-30 | 1990-08-21 | Nippon Synthetic Chem Ind Co Ltd:The | Coating composition for coated steel sheet |
| JPH03182527A (en) * | 1989-12-13 | 1991-08-08 | Dainichiseika Color & Chem Mfg Co Ltd | Conductive colored flooring plastic chip |
| JP2005048968A (en) * | 2003-07-29 | 2005-02-24 | Nippon Denki Keiki Kenteisho | Electric furnace |
| KR20060117732A (en) * | 2005-05-13 | 2006-11-17 | 함창화 | Rod-shaped heating conductor |
| US20110291429A1 (en) * | 2010-05-28 | 2011-12-01 | Flat Rock Metal Inc. | Process for Coating Metal Components With a Coating That Prevents Electrochemical Plating |
| US20160148725A1 (en) * | 2013-07-19 | 2016-05-26 | Dow Global Technologies Llc | Cable with polymer composite core |
| KR101549344B1 (en) * | 2014-06-30 | 2015-09-11 | 주식회사 유니웜 | Ceramic heat element |
| KR20170052915A (en) * | 2015-11-05 | 2017-05-15 | 동양로지텍(주) | Method of manufacturing pyrexia wire and a pyrexia wire produced by this method |
| CN109193213A (en) * | 2018-09-07 | 2019-01-11 | 四川力智久创知识产权运营有限公司 | A kind of Graphene electrodes |
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| Title |
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