CN112469146A - Flexible thermoelectric device and preparation method thereof - Google Patents
Flexible thermoelectric device and preparation method thereof Download PDFInfo
- Publication number
- CN112469146A CN112469146A CN202011407945.7A CN202011407945A CN112469146A CN 112469146 A CN112469146 A CN 112469146A CN 202011407945 A CN202011407945 A CN 202011407945A CN 112469146 A CN112469146 A CN 112469146A
- Authority
- CN
- China
- Prior art keywords
- carbon fiber
- thermoelectric device
- flexible thermoelectric
- heating
- manufacturing
- 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
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 76
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 75
- 239000004917 carbon fiber Substances 0.000 claims abstract description 75
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000004806 packaging method and process Methods 0.000 claims abstract description 19
- 238000005524 ceramic coating Methods 0.000 claims abstract description 16
- 230000005855 radiation Effects 0.000 claims abstract description 11
- 239000004020 conductor Substances 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 39
- 239000004744 fabric Substances 0.000 claims description 32
- 238000004519 manufacturing process Methods 0.000 claims description 23
- 239000000835 fiber Substances 0.000 claims description 18
- 229920001131 Pulp (paper) Polymers 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 239000003063 flame retardant Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 8
- 238000010041 electrostatic spinning Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000009958 sewing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 229920001187 thermosetting polymer Polymers 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000009954 braiding Methods 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 3
- 238000009940 knitting Methods 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 description 8
- 238000005485 electric heating Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000008280 blood Substances 0.000 description 5
- 210000004369 blood Anatomy 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000004060 metabolic process Effects 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000005670 electromagnetic radiation Effects 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000000554 physical therapy Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- QNVNLUSHGRBCLO-UHFFFAOYSA-N 5-hydroxybenzene-1,3-dicarboxylic acid Chemical compound OC(=O)C1=CC(O)=CC(C(O)=O)=C1 QNVNLUSHGRBCLO-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical group C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- KUBDPQJOLOUJRM-UHFFFAOYSA-N 2-(chloromethyl)oxirane;4-[2-(4-hydroxyphenyl)propan-2-yl]phenol Chemical compound ClCC1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 KUBDPQJOLOUJRM-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- ULKLGIFJWFIQFF-UHFFFAOYSA-N 5K8XI641G3 Chemical compound CCC1=NC=C(C)N1 ULKLGIFJWFIQFF-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 229920006352 transparent thermoplastic Polymers 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/145—Carbon only, e.g. carbon black, graphite
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
- H05B1/0272—For heating of fabrics
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
- H05B3/342—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heaters used in textiles
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Resistance Heating (AREA)
- Surface Heating Bodies (AREA)
Abstract
The invention provides a flexible thermoelectric device and a preparation method thereof, wherein the preparation method comprises the steps of preparing a heating layer, wherein the heating layer is a heating element of the flexible thermoelectric device, and the heating layer comprises a flexible carbon fiber thin part and is connected to a lead end through a conductor part; preparing a packaging layer, wherein the packaging layer is laid on two outer surfaces of the heating layer and used for protecting the heating layer and guiding far infrared radiation outwards; and spraying a far infrared ceramic coating, wherein the far infrared ceramic coating is sprayed on the outer surface of the packaging layer.
Description
Technical Field
The disclosure relates to a flexible thermoelectric device and a preparation method thereof, and belongs to the field of electric heating application.
Background
At present, the common principle of the electric heating device is heating by a heating wire. Such as an electric blanket, a heating seat and the like, the soft cable type electric heating element is woven or sewn into the blanket in a snake-shaped manner and generates heat when being electrified, the heating mode has uneven temperature, and the generated electromagnetic radiation has wide influence on the health of a human body. The work is stopped when the silk breaks, and the human body sensitivity is poor. Other film heating devices, such as PI film electric heaters, are composed of resistance cards and wires, the resistance cards are formed by etching according to designed resistance values and then packaged by PI films, the process is complex, a large amount of manual operation is needed, and therefore production efficiency is low, manufacturing cost is high, and continuous batch production cannot be achieved.
With the development of society, the existing heating products on the market can not meet the requirements of people on the functionalization, diversification and safety of the products gradually, and the requirements on some thermoelectric devices with the characteristics of safety, environmental protection, physical therapy, wearability, flexibility and the like are more and more prominent.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present disclosure provides a flexible thermoelectric device and a method of manufacturing the same.
According to one aspect of the disclosure, a flexible thermoelectric device and a preparation method thereof comprise the steps of preparing a heating layer, wherein the heating layer is a heating element of the flexible thermoelectric device and comprises a flexible carbon fiber thin part, and a conductor part is connected into a lead end; preparing a packaging layer, wherein the packaging layer is laid on two outer surfaces of the heating layer and used for protecting the heating layer and guiding far infrared radiation outwards; and spraying a far infrared ceramic coating, wherein the far infrared ceramic coating is sprayed on the outer surface of the packaging layer; and assembling with a temperature controller.
According to at least one embodiment of the present disclosure, the method for preparing the packaging layer includes placing the heating layer on an ultrathin thermoplastic or thermosetting glass fiber prepreg slightly larger than the heating layer; laying a layer of prepreg with the same size on the heating layer; laying superfine demolding cloth on the prepreg to form a micro grid array on the surface of the curing sheet, so that the subsequent coating can be conveniently attached; release paper is laid to prevent the flash from being difficult to clean during hot pressing; curing and molding the raw materials on a hot press according to a curing process of the prepreg; and after the solidification is finished, trimming and polishing the residual materials.
According to at least one embodiment of the present disclosure, the pressure for curing and molding is 0.3MPa, the temperature is 120-130 ℃, and the treatment time is 30-60 min.
According to at least one embodiment of the present disclosure, the prepreg is a flame retardant transparent prepreg.
According to at least one embodiment of the present disclosure, the flexible carbon fiber sheet is carbon fiber paper, and the method of making includes injecting water into a slurry machine and heating; adding the dissolved dispersing agent into the pulper and uniformly stirring; adding carbon fibers into the pulper for dispersing; adding wood pulp short fibers into the pulper for dispersing; after the wood pulp short fibers and the carbon fibers are completely dispersed, pumping the mixture into a pulp preparation pool; and treating the wood pulp long fibers, and adding the wood pulp long fibers into the pulp blending pool for mixing.
According to at least one embodiment of the disclosure, the flexible carbon fiber thin piece is carbon fiber cloth, and the preparation method comprises the steps of spinning a polyacrylonitrile/dimethylformamide mixed solution into fiber yarns by using electrostatic spinning equipment, and preparing the porous carbon fiber yarns by adopting a potassium hydroxide hole expanding method; the carbon fiber yarns are prepared into the carbon fiber cloth through weaving, knitting, braiding, pre-dipping cloth or non-woven cloth processes.
According to at least one embodiment of the present disclosure, a method of accessing a lead end through a conductor includes fixing a lead to both ends of the carbon fiber cloth or the carbon fiber paper with a sewing machine or a piercing device, and a sewing or fixing direction is perpendicular to an orientation of the carbon fiber; and connecting the wire to a wire access point; a method of assembly with a thermostat includes connecting the thermostat to the wire access point.
According to another aspect of the present disclosure, a flexible thermoelectric device is prepared according to the above preparation method.
The present disclosure has the following beneficial effects:
1. the heat transfer is mainly based on far infrared radiation, the electromagnetic radiation is small, energy is radiated outwards in a far infrared mode, and 5-15 mu m of far infrared light waves are released, so that the oxygen content of blood is improved, the cell activity is enhanced, the metabolism is promoted, and a certain physiotherapy effect is achieved;
2. the conductive path is formed by lapping the carbon fiber wires, and the wires are broken without influencing the heating effect; the heating device is heated quickly and uniformly; the heater has low energy consumption, energy conservation and environmental protection, can be used under safe voltage (both direct current and alternating current), has extremely low current density, and has no harm to human body;
3. the packaging ultrathin transparent thermoplastic material can be flexibly bent at will, is suitable for various occasions, can be used for protecting the heating layer, can be used for facilitating the direct outward emission of far infrared radiation emitted by the heating layer, and can also conduct heat generated by the heating layer so as to uniformly distribute the heat;
4. the surface is sprayed with the far infrared ceramic coating, so that the heat conduction efficiency is improved, and the cleaning is easy; secondly, the internal heating device can be protected and cannot fall off or wrinkle when being bent; thirdly, the wear resistance of the surface can be enhanced, the service life of the flexible thermoelectric device can be prolonged, fourthly, the surface insulation can be enhanced, the safety in use can be enhanced, fifthly, the good heat conductivity of the flexible thermoelectric device is utilized to improve the heating efficiency, reduce the energy loss and further improve the uniform part of heat; sixthly, far infrared light waves of 5-15 microns are further released outwards, so that the oxygen content of blood is improved, the cell activity is enhanced, and the metabolism is promoted;
5. the heating temperature can be designed and can be combined into various products with different powers and temperatures;
6. by utilizing the heating layer ultrathin packaging layer and the ceramic coating, the uniformity of heat distribution can be greatly improved, the uniformity of human body for temperature sensing is good, and the use experience is obviously improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1 is a schematic structural view of a flexible thermoelectric device according to at least one embodiment of the present disclosure.
The reference numbers in the figures denote:
1-heating layer, 2-packaging layer, 3-ceramic coating, 4-temperature controller, 5-power supply.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The present disclosure provides a method of fabricating a flexible thermoelectric device.
In at least one embodiment of the present disclosure, the present disclosure provides a flexible thermoelectric device, as shown in fig. 1, including:
the heating layer 1 is a heating element of a flexible thermoelectric device and comprises a flexible carbon fiber thin part, and the flexible carbon fiber thin part is connected to a lead end through a conductor; carbon fiber cloth or carbon fiber paper can be adopted, and the preparation method has mature preparation process and reasonable cost.
The packaging layer 2 adopts the material technology of soaking to lay two upper and lower surfaces on layer 1 that generates heat and moulds the technology shaping through heat, soaks the material and can adopt the fine preimpregnation material of ultra-thin heat plastics or thermosetting glass, and packaging layer 2's effect is used for protecting layer 1 that generates heat on one hand, and on the other hand, the far infrared radiation accessible that layer 1 sent that generates heat directly outwards disperses, and on the other hand can also make the conduction generate heat the heat that layer 1 produced, makes heat evenly distributed.
The far infrared ceramic coating 3 is sprayed on the outer surfaces of the upper packaging layer 2 and the lower packaging layer 2 by adopting a spraying process, the ceramic coating 3 has the functions of protecting an internal heating device, enhancing the wear resistance of the surface and prolonging the service life of a flexible thermoelectric device, enhancing the surface insulation property and enhancing the safety in use, and the ceramic coating utilizes the good heat conductivity of the ceramic coating to improve the heating efficiency, reduce the energy loss and further improve the uniform part of heat; fifthly, far infrared light waves of 5-15 microns are further released outwards, oxygen content of blood is improved, cell activity is enhanced, and metabolism is promoted;
by adopting the heating layer 1, the ultrathin packaging layer 2 and the sprayed ceramic coating 3, the flexible thermoelectric device can be ensured to have good bending performance, is not easy to wrinkle, can be bent and curled at will, and is suitable for various occasions.
The carbon fiber heating thin piece is characterized in that carbon fiber conducting and heat conducting performance is utilized, carbon fiber paper or carbon fiber cloth is utilized, a thermoplastic material soaking process is combined, a stable conducting network is built, a thermoplastic or thermosetting process is used for conducting pressing and shaping, and the power of the carbon fiber heating thin piece and the surface temperature which can be achieved are adjusted through the content of carbon fiber yarns.
The flexible thermoelectric device provided by the present disclosure can be prepared according to the following method:
firstly, preparing a heating layer 1 by adopting carbon fiber cloth or carbon fiber paper,
if the carbon fiber paper is adopted, according to at least one embodiment of the disclosure, the manufacturing process of the carbon fiber paper adopts the mixing of chopped carbon fibers and plant fibers, and the carbon fiber conductive paper with adjustable conductivity and good paper strength can be produced by using the traditional wet papermaking process for papermaking and forming, and the produced common carbon fiber conductive paper has low cost and is easy to form large-scale production capacity, and can also be produced by using small-scale and low-cost equipment.
The process comprises the following steps: injecting water into the slurry dispersing machine and heating;
adding the dissolved dispersing agent into the pulper and uniformly stirring;
adding carbon fibers into the pulper for dispersing;
adding wood pulp short fibers into the pulper for dispersing;
after the wood pulp short fibers and the carbon fibers are completely dispersed, pumping the mixture into a pulp preparation pool; and
and treating the wood pulp long fibers, and adding the wood pulp long fibers into the pulp blending pool for mixing.
The specific manufacturing process comprises the following steps: the carbon fiber raw material is washed by hot water after being dipped and extracted, and then is dispersed by a disperser, and after dispersion is finished, lubrication protection is carried out to enter a storage pool for standby; on the other hand, the bleached wood pulp is pulped by a hydrapulper, the pulp enters a pulp tank, and is pulped by a double-disc refiner and enters the next pulp tank for standby; mixing and stirring the carbon fiber slurry in the storage tank and the wood pulp in the pulp tank in a pulp mixing tank to prepare pulp, leading the pulp into a pulp mixing box according to the using amount, removing sand by using a sand remover, sieving by using a rotary wing sieve, leading the pulp into a head box, papermaking by using a cylinder paper machine, and sequentially squeezing, drying, curling and cutting paper to form a finished product.
② if carbon fiber cloth is adopted, according to at least one embodiment of the present disclosure, the manufacturing process adopts electrostatic spinning method, the electrostatic spinning method is a method of applying thousands of volts of high voltage static electricity on polymer solution, the liquid flow is stretched in electric field, finally forming nano-micron fiber material. Fibers of different diameters can be prepared by controlling the viscosity of the solution, the magnitude of the voltage, the molecular weight of the polymer, the shape of the needle, the humidity and temperature, etc. The conductive heating material prepared by electrostatic spinning has large specific surface area and adjustable size, and the performance of the conductive heating material can be further improved by further modifying, coating and the like on the surface of the fiber, so that the conductive heating material has extremely high application value.
The specific manufacturing process comprises the following steps: spinning the polyacrylonitrile/dimethylformamide mixed solution into fiber yarns by adopting electrostatic spinning equipment, and preparing into porous carbon fiber yarns by adopting a potassium hydroxide reaming method; then preparing the carbon fiber yarns into the carbon fiber cloth through weaving, knitting, braiding, pre-dipping cloth or non-woven cloth processes.
Cutting the carbon fiber paper or the carbon fiber cloth with designed size according to the temperature and size requirements, sewing the edges of the paper or the cloth vertical to the carbon fiber direction by using a copper sheet, sewing the carbon fiber paper or the carbon fiber cloth by using a copper sheet lead and connecting the carbon fiber paper or the carbon fiber cloth into a lead end;
thirdly, arranging the carbon fiber paper or the carbon fibers connected with the copper sheet wires on an ultrathin thermoplastic or thermosetting glass fiber prepreg slightly larger than the carbon fiber paper or the carbon fiber cloth, and paving a layer of prepreg with the same size on the carbon fiber paper; wherein according to at least one embodiment of this disclosure, the prepreg is fire-retardant transparent material prepreg, can be:
the halogen-free flame-retardant epoxy resin composition has excellent heat resistance and moisture resistance, such as: from bisphenol A epoxy resin (Epikote 1256, Epikote 1001)103, BRG 558 (phenolic resin) 6.3, melamine 5, A1(OH)325, 2E4MZ 0.2.2 and 15 parts of phenoxy cyclophosphazene oligomer to form glue solution.
② compounds with phenol structure and triazine structure and compounds containing P, such as: the glass cloth is dipped with a glue solution which comprises 44.3 parts of 1, 6-dihydroxy naphthalene-epichlorohydrin copolymer, 34.6 parts of benzoguanamine-formaldehyde copolymer and 2211 parts of PX200 (phosphate).
③ flame-retardant phosphorus-containing epoxy resin composition, such as 100 parts of phosphorus-containing epoxy resin [ prepared from EOCN1020 (ortho-cresol-formaldehyde epoxy resin), bisphenol A and HCA (9, 10-dihydro-9-oxa-10-phosphine oxide phenanthrene-10) ]; 3.52 parts of dioxyamine; 0.05 part of 2-ethyl-4-methylimidazole (2E4 MZ); 30 parts of a block copolymer (prepared from 5-hydroxyisophthalic acid/isophthalic acid-3, 4 c-oxyalkylene-dianiline oligomer and a hydroxy-terminated butadiene-acrylonitrile copolymer (HycarCTBN)).
The preparation method of the prepreg comprises the following steps: and (3) soaking the fabric in the flame-retardant glue solution to prepare the flame-retardant prepreg. Here, the fabric includes a glass fiber fabric or a carbon fiber fabric. The setting of fire-retardant type preimpregnation material makes the piece that generates heat that this disclosure provided possess fire-retardant, fire prevention characteristic, can satisfy the requirement of different application occasions to the fire prevention.
And fourthly, paving the superfine release cloth on the prepreg to form a micro grid array on the surface of the cured sheet, so as to facilitate the adhesion of the coating. Then laying release paper to prevent the flash from being difficult to clean during hot pressing;
fifthly, curing and molding the raw materials on a press according to a curing process of the prepreg (according to the curing process of the prepreg), wherein the pressure is 0.3MPa, the temperature is 120-130 ℃, and the treatment time is 30-60 min; after the solidification is finished, trimming and polishing the residual materials; through the one-step forming technology, the carbon fiber paper or the carbon fiber cloth is directly packaged during prepreg curing, so that the production procedures are reduced, and the production cost is saved.
And sixthly, spraying far infrared ceramic coating on the cured heating device, assembling the cured heating device and the temperature controller 4 to obtain a flexible thermoelectric device, wherein the temperature controller 4 is used for controlling the working state of the flexible thermoelectric device according to the actual indoor temperature and the set value of the temperature, connecting the external power supply 5 with the temperature controller 4 and providing power for the heating layer 1.
The above preparation steps and parameters may be omitted or modified according to actual needs, which are only used as examples to illustrate the technical implementation details of the present disclosure, and are not used as limitations on the scope of the present disclosure.
The heating layer 1 mainly adopts a carbon fiber composite heating technology, under the physical environment of potential difference generated after electrification, the carbon fibers generate lattice vibration, and the essence is a thermal motion phenomenon generated by mutual vibration and friction of carbon atoms and is transferred in the forms of heat conduction and heat radiation. The heating surface is an electronic circuit, and the carbon fiber network is used as a heating source, so that the heating device is an environment-friendly and clean heating mode with high comfort standard. The advantages of the heat generating layer 1 are mainly embodied in the following aspects:
1) uniform heating: the heat conduction and the heat radiation of the carbon fiber paper or the carbon fiber cloth combined with the ultrathin packaging layer 2 are heating and radiation of the whole plane, are not punctiform or linear heating, have small temperature difference, generate heat on the plane, synchronously heat up, continuously and stably dissipate heat, so the heating is uniform, the heat is easy to transfer and disperse, and the heat radiation performance is good;
2) the heat energy conversion efficiency is high: the heating device is heated immediately after being opened, the heating is quickly and uniformly heated, no vacant energy consumption exists, the theoretical value of the heat efficiency is as high as 99.99 percent, the theoretical value can generally reach 97 percent in practical application, compared with the traditional heating mode, the energy can be saved by 20 to 50 percent, the energy is saved, the environment is protected, and the energy consumption is reduced;
3) the comfort is good: the heat transfer is mainly based on far infrared radiation, 5-15 mu m far infrared light waves are released, the heat transfer mode is similar to sunlight, the comfort is improved, the oxygen content of blood can be improved, the cell activity is enhanced, and the metabolism is promoted;
4) the design is easy: the heating body can be freely combined into heating materials with different powers and temperatures according to the power and specification requirements so as to meet different requirements;
5) safety and environmental protection: under the common voltage (220V), the whole surface is an electronic path, the current density is extremely low, and the human body is not damaged; meanwhile, the flexible thermoelectric device is formed by heating carbon fiber carbon molecules, is a micro-current, and only 1/375 of a mobile phone is detected as electromagnetic radiation, so that the electromagnetic radiation does not exist, and the flexible thermoelectric device can be used by pregnant women safely; due to the use of the flame-retardant prepreg, the heating plate has good flame-retardant and fireproof performances;
6) intelligent temperature control: the unique temperature control technology can realize time-sharing zone control and can also adjust according to the requirement on the comfort degree;
7) the surface quality is high: the far infrared ceramic coating 3 is sprayed on the surface, so that the heat conduction efficiency is improved, and the cleaning is easy; secondly, the internal heating device can be protected and cannot fall off or wrinkle when being bent; thirdly, the wear resistance of the surface can be enhanced, the service life of the flexible thermoelectric device can be prolonged, fourthly, the surface insulation can be enhanced, the safety in use can be enhanced, fifthly, the good heat conductivity of the flexible thermoelectric device is utilized to improve the heating efficiency, reduce the energy loss and further improve the uniform part of heat; sixthly, far infrared light waves of 5-15 microns are further released outwards, oxygen content of blood is improved, cell activity is enhanced, and metabolism is promoted.
The flexible thermoelectric device provided by the disclosure is relatively suitable for the field of materials contacting human bodies, and due to the characteristic of flexibility, bending and folding, the flexible thermoelectric device is extremely wide in application, such as the field of physical therapy, such as an electric blanket or an electric heating chair, the field of wearable, such as an electric heating garment or an electric heating shoe, the field of functional decoration, such as automotive interior or seat skin, the field of building, such as interior or curtain, and the like.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (10)
1. A preparation method of a flexible thermoelectric device is characterized by comprising the following steps:
preparing a heating layer, wherein the heating layer is a heating element of the flexible thermoelectric device, the heating layer comprises a flexible carbon fiber thin piece, and the flexible carbon fiber thin piece is connected to a lead end through a conductor piece;
preparing a packaging layer, wherein the packaging layer is laid on two outer surfaces of the heating layer and used for protecting the heating layer and guiding far infrared radiation outwards; and
and spraying a far infrared ceramic coating, wherein the far infrared ceramic coating is sprayed on the outer surface of the packaging layer.
2. The method for manufacturing a flexible thermoelectric device according to claim 1, wherein the method for manufacturing the encapsulation layer comprises:
placing the heating layer on an ultrathin thermoplastic or thermosetting glass fiber prepreg slightly larger than the heating layer;
laying a layer of prepreg with the same size on the heating layer;
curing and molding the heating layer of the laid prepreg on a hot press according to the curing process of the prepreg;
and after the solidification is finished, trimming and polishing the residual materials.
3. The method for manufacturing a flexible thermoelectric device according to claim 2, wherein the method for manufacturing the encapsulation layer further comprises:
between the two procedures of prepreg and curing molding,
laying superfine demolding cloth on the prepreg to form a micro grid array on the surface of the curing sheet, so that the subsequent coating can be conveniently attached;
and release paper is laid to prevent the flash from being difficult to clean during hot pressing.
4. The method for preparing the flexible thermoelectric device according to claim 3, wherein the pressure for curing and molding is 0.3MPa, the temperature is 120-130 ℃, and the treatment time is 30-60 min.
5. The method for manufacturing a flexible thermoelectric device according to claim 2, wherein the prepreg is a flame retardant transparent prepreg.
6. The method for manufacturing a flexible thermoelectric device according to claim 1, wherein the flexible carbon fiber sheet is a carbon fiber cloth or a carbon fiber paper.
7. The method for manufacturing a flexible thermoelectric device according to claim 6, wherein the method for manufacturing a carbon fiber paper comprises:
injecting water into the slurry dispersing machine and heating;
adding the dissolved dispersing agent into the pulper and uniformly stirring;
adding carbon fibers into the pulper for dispersing;
adding wood pulp short fibers into the pulper for dispersing;
after the wood pulp short fibers and the carbon fibers are completely dispersed, pumping the mixture into a pulp preparation pool; and
and treating the wood pulp long fibers, and adding the wood pulp long fibers into the pulp blending pool for mixing.
8. The method for manufacturing a flexible thermoelectric device according to claim 6, wherein the method for manufacturing the carbon fiber cloth comprises
Spinning the polyacrylonitrile/dimethylformamide mixed solution into fiber yarns by using electrostatic spinning equipment, and preparing the porous carbon fiber yarns by adopting a potassium hydroxide reaming method;
the carbon fiber yarns are prepared into the carbon fiber cloth through weaving, knitting, braiding, pre-dipping cloth or non-woven cloth processes.
9. The method for manufacturing a flexible thermoelectric device according to claim 1,
the method for accessing the end of the lead through the conductor comprises the steps of fixing the lead to two ends of the flexible carbon fiber thin piece by using a sewing machine or a puncture device, wherein the sewing or fixing direction is vertical to the orientation of the carbon fiber; and
connecting the wire to a wire access point; and
assembling with a temperature controller; a method of assembly with a thermostat includes connecting the thermostat to the wire access point.
10. A flexible thermoelectric device, characterized in that it is produced according to the method for producing a flexible thermoelectric device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011407945.7A CN112469146A (en) | 2020-12-03 | 2020-12-03 | Flexible thermoelectric device and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011407945.7A CN112469146A (en) | 2020-12-03 | 2020-12-03 | Flexible thermoelectric device and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112469146A true CN112469146A (en) | 2021-03-09 |
Family
ID=74805477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011407945.7A Pending CN112469146A (en) | 2020-12-03 | 2020-12-03 | Flexible thermoelectric device and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112469146A (en) |
-
2020
- 2020-12-03 CN CN202011407945.7A patent/CN112469146A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107631344A (en) | Graphene self-heating floor and manufacture method and low-voltage self-heating floor system | |
| CN214125549U (en) | Flexible thermoelectric device | |
| JP2004512439A (en) | Heatable textile products | |
| CN102226325A (en) | Far infrared carbon fiber low temperature conductive heating paper and preparation method thereof | |
| CN112626848A (en) | Portable low-voltage carbon nano electric heating fabric, preparation method and application | |
| CN112469146A (en) | Flexible thermoelectric device and preparation method thereof | |
| CN106273921B (en) | A kind of carbon fiber thermal core floor based on the hot sandwich layer of modified carbon fiber | |
| CN103481549A (en) | Alginate fiber electrostatic flocking fabric for medical treatment and manufacturing method thereof | |
| CN107046741A (en) | A kind of flexible sheet carbon fiber exothermic part | |
| CN206879120U (en) | A kind of flexible sheet carbon fiber exothermic part | |
| CN110430630A (en) | A kind of graphene electric heating carpet with purification function | |
| CN1201358A (en) | Conductive exothermal non-woven fabric and production method therefor | |
| CN101929019A (en) | Temperature superconducting intelligent memory functional fabric | |
| CN103103870A (en) | Method for preparing functional carbon fiber composite electrothermal paper | |
| CN2567250Y (en) | Puffing thermal insulating nonwoven with high elastic resilience | |
| CN110072302A (en) | Far infrared carbon fiber heating board and preparation method thereof | |
| CN210183574U (en) | Far infrared carbon fiber heating plate | |
| CN213507795U (en) | Graphene coated cloth and electric blanket using same | |
| CN108330697A (en) | Polyester fiber with excellent flame retardant performance | |
| CN209703176U (en) | One kind can heat fabric and clothing | |
| CN210670606U (en) | Graphene electric heating carpet with purification function | |
| CN104244475B (en) | Processing method of carbon fiber heating pad | |
| CN216968925U (en) | Flexible cotton viscose tencel yarn-dyed fabric with good moisture absorption effect | |
| WO2020211412A1 (en) | Air heat exchanger, manufacturing method for same, and applications thereof | |
| CN209731603U (en) | A kind of bamboo and wood electric hot plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |