CN115191666A - Carbon fiber heating body, preparation method thereof and electronic cigarette atomizer - Google Patents
Carbon fiber heating body, preparation method thereof and electronic cigarette atomizer Download PDFInfo
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- CN115191666A CN115191666A CN202210977118.4A CN202210977118A CN115191666A CN 115191666 A CN115191666 A CN 115191666A CN 202210977118 A CN202210977118 A CN 202210977118A CN 115191666 A CN115191666 A CN 115191666A
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- unidirectional tape
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 287
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 287
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 287
- 238000010438 heat treatment Methods 0.000 title claims abstract description 123
- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 10
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000007772 electrode material Substances 0.000 claims description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 28
- 229910052799 carbon Inorganic materials 0.000 claims description 24
- 239000011267 electrode slurry Substances 0.000 claims description 20
- 238000007639 printing Methods 0.000 claims description 18
- 239000003575 carbonaceous material Substances 0.000 claims description 16
- 239000002003 electrode paste Substances 0.000 claims description 15
- 239000002904 solvent Substances 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 9
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000011256 inorganic filler Substances 0.000 claims description 6
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 6
- 239000011203 carbon fibre reinforced carbon Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000005909 Kieselgur Substances 0.000 claims description 2
- 238000000889 atomisation Methods 0.000 abstract description 19
- 229920000742 Cotton Polymers 0.000 description 16
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 12
- 241000208125 Nicotiana Species 0.000 description 10
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 10
- 239000002002 slurry Substances 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 8
- 230000000149 penetrating effect Effects 0.000 description 8
- 238000007650 screen-printing Methods 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000008896 Opium Substances 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229960001027 opium Drugs 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- A24F40/70—Manufacture
Landscapes
- Resistance Heating (AREA)
- Surface Heating Bodies (AREA)
Abstract
The invention provides a carbon fiber heating body which comprises a plurality of carbon fiber heating layers, wherein each carbon fiber heating layer comprises a plurality of carbon fiber unidirectional wires which are sequentially arranged, the plurality of carbon fiber heating layers are vertically stacked, a porous conducting layer is arranged between every two adjacent carbon fiber heating layers, and the two adjacent carbon fiber heating layers are fixedly bonded through the porous conducting layer. The carbon fiber heating body has the functions of oil guiding and heating atomization, and is large in atomization area and high in atomization efficiency. The invention also provides a preparation method of the carbon fiber heating body and an electronic cigarette atomizer.
Description
Technical Field
The invention relates to the technical field of electronic cigarettes, in particular to a carbon fiber heating body, a preparation method of the carbon fiber heating body and an electronic cigarette atomizer.
Background
The electronic cigarette is also named as a virtual cigarette, a steam cigarette, an aerosol generating device and the like, and is mainly used for simulating smoking feeling on the premise of not influencing health so as to stop smoking or replace cigarettes.
The electron smog core is the core components of electron smog spinning disk atomiser, and the heat-generating body in the electron smog core is the core component of electric heat conversion, and its main effect is heating tobacco tar (opium paste) production smog. At present, the electronic cigarette atomizing core generally adopts oil guide cotton and a heating net as heating bodies, and the oil guide cotton is attached to the heating net; when the oil guide cotton is used, after the oil guide cotton absorbs tobacco tar from the oil storage cotton or the oil storage cavity, the tobacco tar is atomized at the contact position of the heating net and the oil guide cotton to form smoke. In the mode, the atomization contact area of the oil guide cotton and the heating net is small, the atomization efficiency is limited, so that insufficient atomization is caused, meanwhile, the local temperature is too high due to the small atomization area, the temperature resistance of the oil guide cotton is poor, and the phenomenon of core pasting is easily caused.
Disclosure of Invention
The invention aims to provide a carbon fiber heating body which has the functions of oil guiding, heating and atomizing, and is large in atomizing area and high in atomizing efficiency.
The invention provides a carbon fiber heating body which comprises a plurality of carbon fiber heating layers, wherein each carbon fiber heating layer comprises a plurality of carbon fiber unidirectional wires which are sequentially arranged, the plurality of carbon fiber heating layers are vertically stacked, a porous conducting layer is arranged between every two adjacent carbon fiber heating layers, and the two adjacent carbon fiber heating layers are fixedly bonded through the porous conducting layer.
In an implementation manner, in each carbon fiber heating layer, a plurality of carbon fiber unidirectional wires are sequentially arranged along the width direction of the carbon fiber heating body, and a gap is arranged between every two adjacent carbon fiber unidirectional wires.
In an implementable manner, the porous conductive layer includes a first main body portion located between two adjacent carbon fiber heat generating layers, and a first penetration portion located within the gap.
In an achievable mode, a first electrode material layer is further arranged between two adjacent carbon fiber heating layers and is positioned at the edge position of the carbon fiber heating body; the first electrode material layer is in conductive contact with the porous conductive layer, and two adjacent carbon fiber heating layers are electrically connected through the first electrode material layer.
In an implementable manner, the first electrode material layer includes a second main body portion located between two adjacent carbon fiber heat generation layers, and a second penetration portion located within the gap.
In an implementation manner, the carbon fiber heating element further comprises an electrode block, the electrode block is arranged corresponding to the edge position of the carbon fiber heating element, and the electrode block is electrically connected with the outermost carbon fiber heating layer through a second electrode material layer.
In an implementation manner, the material of the porous conductive layer is a porous carbon material.
The invention also provides a preparation method of the carbon fiber heating element, which is used for manufacturing the carbon fiber heating element and comprises the following steps:
s10: providing a plurality of carbon fiber unidirectional tapes, wherein each carbon fiber unidirectional tape comprises a plurality of carbon fiber unidirectional wires which are arranged in sequence;
s20: printing porous conductive paste on the first layer of carbon fiber unidirectional tape, laying a second layer of carbon fiber unidirectional tape on the first layer of carbon fiber unidirectional tape, and printing porous conductive paste on the second layer of carbon fiber unidirectional tape;
s30: repeating the step S20 until a plurality of layers of the carbon fiber unidirectional tape which are sequentially overlapped are obtained;
s40: and curing the porous conductive paste on the plurality of layers of the carbon fiber unidirectional tapes to obtain the carbon fiber heating body.
In an implementation manner, the number of the carbon fiber unidirectional tapes in each layer is multiple, and the carbon fiber unidirectional tapes in each layer are sequentially arranged along the width direction of the carbon fiber heating body.
In an implementable manner, the edge position of each layer of the carbon fiber unidirectional tape is further printed with electrode paste, and the step S20 specifically includes:
printing the porous conductive paste on the first layer of the carbon fiber unidirectional tape, reserving a blank area at the edge position of the first layer of the carbon fiber unidirectional tape, and then drying the porous conductive paste on the first layer of the carbon fiber unidirectional tape;
after the surface of the porous conductive paste on the first layer of the carbon fiber unidirectional tape is dried, the electrode paste is printed on the blank area on the first layer of the carbon fiber unidirectional tape, and then a second layer of the carbon fiber unidirectional tape is laid on the first layer of the carbon fiber unidirectional tape.
In one implementation, the step S30 further includes:
after the carbon fiber unidirectional tape is obtained by sequentially stacking a plurality of layers, the electrode slurry is printed on the outermost carbon fiber unidirectional tape, then an electrode block is pressed on the electrode slurry of the outermost carbon fiber unidirectional tape, and the electrode block is adhered to the outermost carbon fiber unidirectional tape through the electrode slurry.
In one realizable manner, the porous conductive paste is a porous carbon paste, and the composition of the porous carbon paste comprises a carbon material, an inorganic filler silicate, diatomite, a dispersant silane coupling agent and a solvent; wherein the carbon material comprises at least one of carbon, graphite, chopped carbon fiber, and carbon nano-meter.
The invention also provides an electronic cigarette atomizer which comprises the carbon fiber heating body.
According to the carbon fiber heating body provided by the invention, the plurality of carbon fiber heating layers are arranged, each carbon fiber heating layer comprises the plurality of carbon fiber unidirectional wires, the porous conducting layer is arranged between every two adjacent carbon fiber heating layers and is used as a binder, and the carbon fiber unidirectional wires, gaps among the carbon fiber unidirectional wires and the porous conducting layer can conduct oil, so that the carbon fiber heating body has good oil conducting capacity; simultaneously, every carbon fiber layer and every porous conducting layer homoenergetic oil absorption atomizing that generates heat for the carbon fiber heat-generating body can wholly heat the atomizing to the tobacco tar, and the atomizing area is big, and atomization efficiency is high. This carbon fiber heat-generating body has simultaneously and leads oil and heating atomization function, has saved and has led the oil cotton, and not only atomization efficiency is high, and the temperature toleration is good moreover, can avoid appearing pasting the core phenomenon.
Drawings
FIG. 1 is a schematic perspective view of a carbon fiber heating element in an embodiment of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic view of the partially exploded structure of fig. 1.
FIG. 4 is a schematic sectional view of a middle portion of the carbon fiber heating element in FIG. 1.
FIG. 5 is a schematic perspective view of a carbon fiber heat-generating body according to another embodiment of the present invention.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The terms upper, lower, left, right, front, rear, top, bottom and the like (if any) in the description and claims of the present invention are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the invention as claimed.
As shown in fig. 1 to 4, a carbon fiber heating element according to an embodiment of the present invention includes a plurality of carbon fiber heating layers 1, each carbon fiber heating layer 1 includes a plurality of carbon fiber unidirectional wires 11 arranged in sequence, and each carbon fiber unidirectional wire 11 is in a filamentous structure. A plurality of carbon fiber generate heat layer 1 from top to bottom range upon range of setting, and two adjacent carbon fiber generate heat and are equipped with porous conducting layer 2 between the layer 1, and porous conducting layer 2 has porous structure, and two adjacent carbon fiber generate heat and bond fixedly between the layer 1 through porous conducting layer 2.
As shown in fig. 1 and 2, in each carbon fiber heating layer 1, as an embodiment, each carbon fiber unidirectional filament 11 extends along the length direction L of the carbon fiber heating element, a plurality of carbon fiber unidirectional filaments 11 are arranged in sequence along the width direction W of the carbon fiber heating element, and a gap 12 is provided between two adjacent carbon fiber unidirectional filaments 11.
Specifically, according to the carbon fiber heating element provided by the embodiment, by arranging the plurality of carbon fiber heating layers 1, each carbon fiber heating layer 1 comprises the plurality of carbon fiber unidirectional wires 11, the porous conductive layer 2 is arranged between two adjacent carbon fiber heating layers 1 and serves as a binder, and the carbon fiber unidirectional wires 11, the gaps 12 between the carbon fiber unidirectional wires 11 and each porous conductive layer 2 can conduct oil, so that the carbon fiber heating element has good oil conducting capacity; simultaneously, every carbon fiber layer 1 and every porous conducting layer 2 homoenergetic that generates heat atomizes for the carbon fiber heat-generating body can wholly heat the atomizing to the tobacco tar, and the atomizing area is big, and atomization efficiency is high. This carbon fiber heat-generating body has simultaneously and leads oil and heating atomization function, has saved and has led the oil cotton, and not only atomization efficiency is high, and the temperature toleration is good moreover, can avoid appearing pasting the core phenomenon.
As shown in fig. 4, as an embodiment, the porous conductive layer 2 includes a first main body portion 21 and a first penetrating portion 22 connected to each other, the first main body portion 21 is located between two adjacent carbon fiber heat generating layers 1, and the first penetrating portion 22 is located in the gap 12. The first penetrating part 22 located in the gap 12 can not only enable the carbon fiber unidirectional wires 11 to be bonded together better, but also can play a role in oil guiding and heating atomization, and the tobacco tar can be guided to the next carbon fiber heating layer 1 from the upper carbon fiber heating layer 1 through the first penetrating part 22, so that the oil guiding and heating atomization capabilities of the whole carbon fiber heating body are improved.
As shown in fig. 1, in one embodiment, the porous conductive layer 2 is located at a middle position of the carbon fiber heating element along the length direction L, and the material of the porous conductive layer 2 is a porous carbon material. A first electrode material layer 3 is arranged between two adjacent carbon fiber heating layers 1, and the first electrode material layer 3 is positioned at the edge position of the carbon fiber heating body along the length direction L of the carbon fiber heating body. The first electrode material layer 3 is in conductive contact with the porous conductive layer 2, and two adjacent carbon fiber heating layers 1 are electrically connected through the first electrode material layer 3.
Specifically, the porous conductive layer 2 is made of a porous carbon material, and the porous carbon material generally has a large resistance, so that the porous conductive layer has a good heating and atomizing function; however, since the resistance of the porous carbon material is relatively large, the edge positions of the two sides of the carbon fiber heating element need to have relatively small resistance (the edge positions of the two sides of the carbon fiber heating element are used as electrodes of the carbon fiber heating element), and meanwhile, since the carbon fiber unidirectional wires 11 are difficult to weld, by arranging the first electrode material layer 3 with relatively small resistance at the edge position of the carbon fiber heating element (the first electrode material layer 3 is generally made of silver paste, gold paste, copper paste, platinum paste, and the like), the two adjacent carbon fiber heating layers 1 are electrically connected through the first electrode material layer 3 to form an electrode structure with relatively small resistance at the edge position of the carbon fiber heating element, so that the carbon fiber heating element is conveniently in conductive connection with an external power supply (not shown). Of course, as shown in fig. 5, in other embodiments, the porous conductive layer 2 may also be made of a material with better conductivity (of course, the heat atomization function of the porous conductive layer 2 will be weakened), and in this case, the porous conductive layer 2 may be entirely disposed (porous conductive paste is printed entirely), and the first electrode material layer 3 is not required to be disposed at the edge position.
As shown in fig. 2, as an embodiment, the first electrode material layer 3 includes a second main body portion 31 and a second penetration portion 32, the second main body portion 31 is located between two adjacent carbon fiber heat generating layers 1, and the second penetration portion 32 is located in the gap 12. The second penetration portion 32 located in the gap 12 can better electrically connect the individual carbon fiber unidirectional wires 11 together, so that the individual carbon fiber unidirectional wires 11 have an integral conductive function, and the problem that each carbon fiber unidirectional wire 11 needs to be electrically connected is solved.
As shown in fig. 1, the carbon fiber heating element further includes an electrode block 4 as an embodiment, and the electrode block 4 may be a metal sheet or a metal mesh. The electrode block 4 is arranged corresponding to the edge position of the carbon fiber heating body, the electrode block 4 is electrically connected with the outermost carbon fiber heating layer 1 through the second electrode material layer 5, and the electrode block 4 is used for being electrically connected with a power supply. The second electrode material layer 5 may use the same electrode material as the first electrode material layer 3.
As shown in fig. 1, as an embodiment, the number of the electrode blocks 4 is two, the two electrode blocks 4 are respectively disposed on two opposite sides of the carbon fiber heating element, and the two electrode blocks 4 are respectively used for electrically connecting with the positive electrode and the negative electrode of the power supply.
As an embodiment, the cross section of the carbon fiber unidirectional yarn 11 may be a circular, square, or other structure.
The embodiment of the invention also provides a preparation method of the carbon fiber heating element, which is used for manufacturing the carbon fiber heating element and comprises the following steps:
s10: providing a plurality of carbon fiber unidirectional tapes, wherein each carbon fiber unidirectional tape comprises a plurality of carbon fiber unidirectional yarns 11 which are sequentially arranged (namely, one carbon fiber unidirectional tape comprises a plurality of carbon fiber unidirectional yarns 11. Because the diameter of the carbon fiber unidirectional yarns 11 is small, the single carbon fiber unidirectional yarn 11 is inconvenient to be arranged and manufactured, and the carbon fiber unidirectional tape is directly utilized to manufacture a carbon fiber heating body);
s20: printing porous conductive paste on the first layer of carbon fiber unidirectional tape, laying a second layer of carbon fiber unidirectional tape on the first layer of carbon fiber unidirectional tape, and printing porous conductive paste on the second layer of carbon fiber unidirectional tape;
s30: repeating the step S20 until the number of layers of the carbon fiber unidirectional tape reaches a target value (for example, 3-4 layers), thereby obtaining a plurality of layers of carbon fiber unidirectional tapes which are sequentially superposed;
s40: and (3) curing the porous conductive paste on the multilayer carbon fiber unidirectional tape (for example, heating the porous conductive paste at 80-100 ℃), and volatilizing the solvent in the paste after curing the porous conductive paste to leave the porous conductive layer 2 with a porous structure, thereby obtaining the carbon fiber heating body.
As an embodiment, the number of the carbon fiber unidirectional tapes in each layer is multiple, and the carbon fiber unidirectional tapes in each layer are sequentially arranged along the width direction W of the carbon fiber heating body; that is, in the step S20, before printing the porous conductive paste on each layer of the carbon fiber unidirectional tape, it is necessary to spread the plurality of carbon fiber unidirectional tapes of each layer uniformly in the width direction W (adjacent carbon fiber unidirectional tapes may be closely arranged or may have gaps therebetween), and then print the porous conductive paste on the plurality of carbon fiber unidirectional tapes of the layer. Of course, in other embodiments, the number of carbon fiber unidirectional tapes per layer may be one, and the size of the one carbon fiber unidirectional tape is relatively large.
As shown in fig. 4, as one embodiment, there is a gap 12 between two adjacent carbon fiber unidirectional filaments 11 in each carbon fiber unidirectional tape. In the step S20, when the porous conductive paste is printed on the carbon fiber unidirectional tape, a part of the porous conductive paste is located between two adjacent layers of the carbon fiber unidirectional tape, and the other part of the porous conductive paste permeates into the gap 12 between the carbon fiber unidirectional filaments 11. The porous conductive paste between two adjacent layers of the carbon fiber unidirectional tapes forms a first main body part 21 of the porous conductive layer 2 after being cured, and the porous conductive paste penetrating into the gap 12 between the carbon fiber unidirectional yarns 11 forms a first penetrating part 22 of the porous conductive layer 2 after being cured.
As an embodiment, the edge position of each layer of the carbon fiber unidirectional tape is also printed with electrode paste. The step S20 specifically includes:
printing porous conductive paste on the first layer of carbon fiber unidirectional tape, reserving a blank area at the edge position of the first layer of carbon fiber unidirectional tape, and then drying the porous conductive paste on the first layer of carbon fiber unidirectional tape (for example, drying at 50-60 ℃);
after the surface of the porous conductive paste on the first carbon fiber unidirectional tape is dried, printing electrode paste on a blank area on the first carbon fiber unidirectional tape, at the moment, enabling the electrode paste to be in contact with the porous conductive paste, and then laying a second carbon fiber unidirectional tape on the first carbon fiber unidirectional tape.
That is, in the step S20, when printing the porous conductive paste on each layer of the carbon fiber unidirectional tape, a blank area is reserved at the edge position of the carbon fiber unidirectional tape (for example, the width of the blank area is 1mm, and the blank area is not printed with the porous conductive paste); after printing porous conductive paste on each layer of carbon fiber unidirectional tape, drying the porous conductive paste, covering and protecting the porous conductive paste at the middle position by using a protective film, and then printing electrode paste in a blank area; after the electrode paste is printed, the protective film is torn off, and then the next layer of carbon fiber unidirectional tape is laid.
As shown in fig. 2, as an embodiment, when the electrode paste is printed on the blank area of the carbon fiber unidirectional tape, a part of the electrode paste is located between two adjacent layers of the carbon fiber unidirectional tape, and another part of the electrode paste penetrates into the gap 12 between the carbon fiber unidirectional filaments 11. The electrode slurry positioned between the two adjacent layers of carbon fiber unidirectional tapes forms the second main body part 31 of the first electrode material layer 3 after being solidified, and the electrode slurry penetrating into the gap 12 between the carbon fiber unidirectional yarns 11 forms the second penetrating part 32 of the first electrode material layer 3 after being solidified.
As an embodiment, the step S30 further includes:
after the carbon fiber unidirectional tapes are obtained, the carbon fiber unidirectional tapes are sequentially stacked in a multilayer mode, electrode slurry is printed on the outermost carbon fiber unidirectional tape, then the electrode block 4 is pressed onto the electrode slurry of the outermost carbon fiber unidirectional tape, the electrode block 4 is bonded onto the outermost carbon fiber unidirectional tape through the electrode slurry, and the electrode block 4 serves as an electrode of a carbon fiber heating body.
In one embodiment, the electrode slurry includes an electrode material and a solvent, the electrode material is at least one of silver powder, gold powder, copper powder and platinum powder, and the solvent is ethanol or ethyl acetate. The electrode slurry comprises 80-85% of electrode material and 18-29% of solvent by mass percent.
As an implementation mode, the porous conductive paste and the electrode paste are printed in a silk-screen printing mode, the silk-screen number of the porous conductive paste is 600-700 meshes, and the silk-screen thickness is 20-25 micrometers; the screen printing mesh number of the electrode slurry is 600-700 meshes, and the screen printing thickness is 20-25 microns.
In one embodiment, the porous conductive paste is a porous carbon paste, and the composition of the porous carbon paste includes a carbon material, an inorganic filler silicate, diatomaceous earth, a dispersant silane coupling agent, and a solvent. Wherein the carbon material comprises at least one of carbon, graphite, chopped carbon fiber and carbon nano-grade, and the solvent is ethanol or ethyl acetate. The mass fractions of the components in the porous carbon slurry are respectively 60-65% of the carbon material, 10-15% of inorganic filler silicate and diatomite in total, 1-2% of dispersant silane coupling agent and 18-29% of solvent.
Specifically, as shown in fig. 1, in this embodiment, since the porous conductive paste is porous carbon paste, the resistance of the porous carbon paste is generally large, and the edge positions on both sides of the carbon fiber heating element need to have smaller resistance, the electrode paste with smaller resistance is printed at the edge position of each layer of the carbon fiber unidirectional tape. As another embodiment, as shown in fig. 5, when the porous conductive paste is a paste having a low resistance, the porous conductive paste may be printed on the carbon fiber unidirectional tape in a whole layer in the step S20, and in this case, the electrode paste does not need to be printed, thereby simplifying the manufacturing process.
The embodiment of the invention also provides an electronic cigarette atomizer which comprises the carbon fiber heating body.
As an implementation mode, electron smog spinning disk atomiser still includes the porous ceramic body (not shown), is equipped with the oil storage chamber (not shown) that is used for storing the tobacco tar in the porous ceramic body, and the carbon fiber heat-generating body is attached on the porous ceramic body, and the carbon fiber heat-generating body can absorb oil from the porous ceramic body, and the tobacco tar of absorption forms smog after carbon fiber heat-generating body heating atomizing to supply the user to inhale.
The carbon fiber heating body and the preparation method thereof provided by the embodiment of the invention have the advantages that:
1. by arranging the plurality of carbon fiber heating layers 1, each carbon fiber heating layer 1 comprises the plurality of carbon fiber unidirectional wires 11, the porous conducting layer 2 is arranged between two adjacent carbon fiber heating layers 1 and is used as a binder, and the carbon fiber unidirectional wires 11, the gaps 12 among the carbon fiber unidirectional wires 11 and each porous conducting layer 2 can conduct oil, so that the whole carbon fiber heating body has good oil conducting capacity; simultaneously, every carbon fiber generates heat layer 1 and every porous conducting layer 2 homoenergetic oil absorption atomizing for the carbon fiber heat-generating body can wholly heat the atomizing to the tobacco tar, and the atomizing area is big, and atomizing is efficient. This carbon fiber heat-generating body has simultaneously and leads oil and heating atomization function, has saved and has led the oil cotton, and not only atomization efficiency is high, and the temperature toleration is good moreover, can avoid appearing pasting the core phenomenon.
2. Because the carbon fiber is difficult to weld, adopt the mode of printing electrode thick liquids to form the electrode structure at the border position of carbon fiber heat-generating body, utilize electrode thick liquids to realize two adjacent carbon fiber heating layer 1's electricity and connect every carbon fiber unidirectional filament 11 in the clearance 12 between the carbon fiber unidirectional filament 11 of electrode thick liquids infiltration, solved the unable problem that forms the electrode and every carbon fiber unidirectional filament 11 needs the electricity to be connected through the welding of carbon fiber.
Examples
Selecting a large carbon fiber unidirectional tape with the grade of T300 or T800, cutting the large carbon fiber unidirectional tape into a plurality of carbon fiber unidirectional tapes with the size of 3mm x 5mm, and then uniformly paving a part of the carbon fiber unidirectional tapes on a porous ceramic body with the porosity of 50-55% to form a first layer of carbon fiber unidirectional tape.
And silk-printing porous carbon slurry on the first layer of carbon fiber unidirectional tape at a position 1mm away from the edge of the first layer of carbon fiber unidirectional tape, wherein the porous carbon slurry comprises carbon materials, inorganic filler silicate, diatomite, a dispersing agent silane coupling agent and a solvent. Wherein the carbon material comprises at least one of carbon, graphite, chopped carbon fiber and carbon nano-grade, and the solvent is ethanol or ethyl acetate. The mass fractions of the components in the porous carbon slurry are respectively 60-65% of carbon material, 10-15% of inorganic filler silicate and diatomite, 1-2% of dispersing agent silane coupling agent and 18-29% of solvent. The screen printing mesh number of the porous conductive paste is 600-700 meshes, and the screen printing thickness is 20-25 micrometers.
Drying the porous carbon slurry on the first layer of carbon fiber unidirectional tape at 50-60 ℃, covering and protecting the porous carbon slurry on the first layer of carbon fiber unidirectional tape by using a protective film after the surface of the porous carbon slurry on the first layer of carbon fiber unidirectional tape is dried, and then silk-printing electrode slurry at the edge position of the first layer of carbon fiber unidirectional tape. The electrode slurry comprises electrode materials and a solvent, wherein the electrode materials are at least one of silver powder, gold powder, copper powder and platinum powder, and the solvent is ethanol or ethyl acetate. The electrode slurry comprises 80-85% of electrode material and 18-29% of solvent by mass percent. The screen printing mesh number of the electrode slurry is 600-700 meshes, and the screen printing thickness is 20-25 micrometers.
And after the electrode slurry is printed, tearing off the protective film, laying a second layer of carbon fiber unidirectional tape on the first layer of carbon fiber unidirectional tape, and repeating the operation until 3-4 layers of carbon fiber unidirectional tapes are pressed. And finally, printing conductive slurry on the carbon fiber unidirectional tape at the outermost layer, pressing the electrode block 4, and then curing to cure the porous carbon slurry and the electrode slurry to obtain the carbon fiber heating body.
Testing the carbon fiber heating body: compared with the universal oil guide cotton with the same quality (the oil guide cotton adopts a three-layer non-woven fabric superposed structure), the oil absorption of the carbon fiber heating element is 0.20-0.25g, the oil absorption of the oil guide cotton is 0.20-0.22g, and the oil absorption of the carbon fiber heating element and the oil absorption of the oil guide cotton are equivalent, so that the carbon fiber heating element has a good oil absorption function; meanwhile, 0.15g of tobacco tar is atomized, the carbon fiber heating element needs 1-2 seconds, and the oil guide cotton needs 3-5 seconds, which shows that the carbon fiber heating element has a good atomization function.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. The carbon fiber heating body is characterized by comprising a plurality of carbon fiber heating layers (1), wherein each carbon fiber heating layer (1) comprises a plurality of carbon fiber unidirectional wires (11) which are sequentially arranged; a plurality of the carbon fiber heating layers (1) are arranged in an up-down stacking mode, a porous conducting layer (2) is arranged between every two adjacent carbon fiber heating layers (1), and every two adjacent carbon fiber heating layers (1) are fixedly bonded through the porous conducting layer (2).
2. The carbon fiber heating element as claimed in claim 1, wherein in each carbon fiber heating layer (1), a plurality of carbon fiber unidirectional wires (11) are arranged in sequence along the width direction (W) of the carbon fiber heating element, and a gap (12) is provided between two adjacent carbon fiber unidirectional wires (11).
3. The carbon fiber heat-generating body as described in claim 2, wherein said porous conductive layer (2) comprises a first main body portion (21) and a first permeable portion (22), said first main body portion (21) being located between adjacent two of said carbon fiber heat-generating layers (1), said first permeable portion (22) being located in said gap (12).
4. The carbon fiber heating element as claimed in claim 2, characterized in that a first electrode material layer (3) is further arranged between two adjacent carbon fiber heating layers (1), and the first electrode material layer (3) is positioned at the edge position of the carbon fiber heating element; the first electrode material layer (3) is in conductive contact with the porous conductive layer (2), and the adjacent two carbon fiber heating layers (1) are electrically connected through the first electrode material layer (3).
5. The carbon fiber heat-generating body as claimed in claim 4, characterized in that said first electrode material layer (3) comprises a second main body part (31) and a second permeated part (32), said second main body part (31) being located between adjacent two of said carbon fiber heat-generating layers (1), said second permeated part (32) being located within said gap (12).
6. A carbon fiber heating element as defined in claim 1, further comprising an electrode block (4), wherein said electrode block (4) is disposed corresponding to the edge position of said carbon fiber heating element, and said electrode block (4) is electrically connected to the outermost carbon fiber heating layer (1) through a second electrode material layer (5).
7. The carbon fiber heat-generating body as described in claim 1, wherein a material of said porous conductive layer (2) is a porous carbon material.
8. A carbon fiber heat-generating body production method characterized by comprising the steps of:
s10: providing a plurality of carbon fiber unidirectional tapes, wherein each carbon fiber unidirectional tape comprises a plurality of carbon fiber unidirectional yarns (11) which are arranged in sequence;
s20: printing porous conductive paste on the first layer of carbon fiber unidirectional tape, laying a second layer of carbon fiber unidirectional tape on the first layer of carbon fiber unidirectional tape, and printing porous conductive paste on the second layer of carbon fiber unidirectional tape;
s30: repeating the step S20 until a plurality of layers of the carbon fiber unidirectional tape which are sequentially overlapped are obtained;
s40: and curing the porous conductive paste on the plurality of layers of the carbon fiber unidirectional tapes to obtain the carbon fiber heating body.
9. The method for producing a carbon fiber heat-generating body as described in claim 8, wherein an electrode paste is further printed at an edge position of each layer of said carbon fiber unidirectional tape, and said step S20 specifically includes:
printing the porous conductive paste on the first layer of the carbon fiber unidirectional tape, reserving a blank area at the edge position of the first layer of the carbon fiber unidirectional tape, and then drying the porous conductive paste on the first layer of the carbon fiber unidirectional tape;
after the surface of the porous conductive paste on the first layer of the carbon fiber unidirectional tape is dried, the electrode paste is printed on the blank area on the first layer of the carbon fiber unidirectional tape, and then a second layer of the carbon fiber unidirectional tape is laid on the first layer of the carbon fiber unidirectional tape.
10. The method for producing a carbon fiber heat-generating body as described in claim 9, wherein said step S30 further comprises:
after the carbon fiber unidirectional tape is obtained by sequentially stacking a plurality of layers, the electrode slurry is printed on the outermost carbon fiber unidirectional tape, then an electrode block (4) is pressed on the electrode slurry of the outermost carbon fiber unidirectional tape, and the electrode block (4) is adhered to the outermost carbon fiber unidirectional tape through the electrode slurry.
11. The method for producing a carbon fiber heat-generating body as described in claim 8, characterized in that the porous conductive paste is a porous carbon paste, and the composition of the porous carbon paste includes a carbon material, an inorganic filler silicate, diatomaceous earth, a dispersant silane coupling agent and a solvent; wherein the carbon material comprises at least one of carbon, graphite, chopped carbon fiber, and carbon nano-meter.
12. An electronic cigarette atomizer comprising the carbon fiber heat-generating body as described in any one of claims 1 to 7.
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| CN202210977118.4A CN115191666A (en) | 2022-08-15 | 2022-08-15 | Carbon fiber heating body, preparation method thereof and electronic cigarette atomizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116041087A (en) * | 2023-01-31 | 2023-05-02 | 深圳市赛尔美电子科技有限公司 | Porous carbon atomization matrix, preparation method, electronic atomization core and electronic atomization device |
| CN116180436A (en) * | 2023-02-17 | 2023-05-30 | 深圳市赛尔美电子科技有限公司 | Carbon fiber sizing agent, heating pipe and heating non-combustion smoking set |
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2022
- 2022-08-15 CN CN202210977118.4A patent/CN115191666A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116041087A (en) * | 2023-01-31 | 2023-05-02 | 深圳市赛尔美电子科技有限公司 | Porous carbon atomization matrix, preparation method, electronic atomization core and electronic atomization device |
| CN116041087B (en) * | 2023-01-31 | 2024-05-14 | 深圳市赛尔美电子科技有限公司 | Porous carbon atomization matrix, preparation method, electronic atomization core and electronic atomization device |
| CN116180436A (en) * | 2023-02-17 | 2023-05-30 | 深圳市赛尔美电子科技有限公司 | Carbon fiber sizing agent, heating pipe and heating non-combustion smoking set |
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