CN112312597A - High-uniformity electric heating film and preparation method thereof - Google Patents
High-uniformity electric heating film and preparation method thereof Download PDFInfo
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- CN112312597A CN112312597A CN201910862394.4A CN201910862394A CN112312597A CN 112312597 A CN112312597 A CN 112312597A CN 201910862394 A CN201910862394 A CN 201910862394A CN 112312597 A CN112312597 A CN 112312597A
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- 238000005485 electric heating Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 40
- 239000002184 metal Substances 0.000 claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 239000011888 foil Substances 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 9
- 238000005538 encapsulation Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 138
- 238000004806 packaging method and process Methods 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 16
- 239000002344 surface layer Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000002861 polymer material Substances 0.000 claims description 9
- 229920006267 polyester film Polymers 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 4
- 239000002041 carbon nanotube Substances 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 3
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052802 copper Inorganic materials 0.000 abstract description 7
- 239000010949 copper Substances 0.000 abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000009826 distribution Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Images
Classifications
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- 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
- H05B3/03—Electrodes
-
- 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
-
- 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
- H05B3/18—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being embedded in an insulating material
-
- 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
Landscapes
- Resistance Heating (AREA)
Abstract
The invention discloses a high-uniformity electric heating film, which is characterized in that: comprises an encapsulation layer, a positive electrode layer, a negative electrode layer and a resistance layer; the positive electrode layer and the negative electrode layer are respectively arranged at the upper side and the lower side of the resistance layer and are electrically connected with the resistance layer in a surface contact way; the encapsulating layer insulatively encapsulates the positive electrode layer, the negative electrode layer, and the resistive layer. The electric heating film of the invention uses the copper metal mesh as the positive electrode layer, the resistance layer has the positive temperature coefficient thermistor effect, the metal foil is used as the negative electrode layer to realize the heating function after electrifying, the plane flow mode of the current of the original electric heating film is changed into the normal flow mode, the current flow path is shortened, the phenomenon of uneven heating of the resistance layer (namely the conductive heating layer) caused by the limitation of the preparation process is avoided, the processing and production difficulty is reduced, the yield is greatly improved, and the use safety is also greatly improved.
Description
Technical Field
The invention relates to the technical field of electric heating, in particular to a high-uniformity electric heating film and a preparation method thereof.
Background
The low-temperature electrothermal film (hereinafter referred to as an electric heating film) is a semitransparent polyester film capable of heating after being electrified, and a conductive heating element is usually packaged in an insulating polyester film. The power supply is communicated with the electric heating film through a lead to convert electric energy into heat energy. Because the electric heating film is a pure resistance circuit, the conversion efficiency is high, and most of the electric heating film (98%) is converted into heat energy except a small loss (2%).
The traditional linear conductive heating element comprises a metal wire, a metal foil tape, a carbon fiber wire and the like. The linear conductive heating elements are arranged in the electric heating film in a linear or continuous S-shaped (serpentine) manner at intervals, so that the temperature of the position where the conductive element is located in the electric heating film is higher, and the temperature of the area uncovered by the electric element gradually decreases, namely the farther the position where the conductive element is located is, the lower the temperature is, and the temperature deviation of the electric heating film is up to 20%.
Some surface-shaped conductive heating elements are appeared, metal powder, conductive carbon black, carbon nano tubes, graphene and the like are compounded with high molecules to form conductive paint, then the conductive paint is coated on a polyester film to form a surface-covered conductive heating layer, and the surface heating mode greatly promotes the development of an electric heating film, so that the temperature distribution of the electric heating film is uniform. However, the following problems still need to be solved: 1. the plane conductive heating layer is easily affected by the preparation process, the lifting difficulty of the existing process is high, and uniform coating cannot be guaranteed, so that the phenomenon that the local temperature is too high or too low still exists, and potential safety hazards exist. 2. After the electric heating film is partially covered, the temperature is easy to rise, the power of the covered area cannot be automatically and properly adjusted, the rise of the temperature is limited, and potential safety hazards exist. 3. The existing electric heating film has poor transverse soaking capability and cannot realize heat homogenization through transverse heat conduction.
Disclosure of Invention
The invention aims to provide a high-uniformity electric heating film with simple structure and uniform heat distribution and a preparation method thereof.
The basic technical scheme for realizing the purpose of the invention is as follows: a high homogeneity electrical heating membrane, its structural feature is: including an encapsulation layer, a positive electrode layer, a negative electrode layer, and a resistive layer. The positive electrode layer and the negative electrode layer are respectively arranged on the upper side and the lower side of the resistance layer and are electrically connected with the resistance layer in a surface contact mode. The packaging layer is used for insulating and packaging the positive electrode layer, the negative electrode layer and the resistance layer, and the positive electrode layer and the negative electrode layer are respectively electrically connected with a power supply through corresponding leads in use.
The technical scheme based on the basic technical scheme is as follows: the positive electrode layer is composed of a metal mesh.
The technical scheme based on the corresponding technical schemes is as follows: the positive electrode layer is electrically connected with a first lead-out wire.
The technical scheme based on the corresponding technical schemes is as follows: the negative electrode layer is composed of a metal foil.
The technical scheme based on the corresponding technical schemes is as follows: the negative electrode layer is electrically connected with a second lead-out wire.
The technical scheme based on the corresponding technical schemes is as follows: the resistance layer is a conductive sheet with positive temperature coefficient thermistor effect, and the thickness of the conductive sheet is 1-2 mm.
The technical scheme based on the corresponding technical schemes is as follows: the packaging layer comprises a bottom layer and a surface layer. The bottom layer and the surface layer are made of the same material and are made of polyester films, polyvinyl chloride films or organic silicon rubber films. The surface layer is fixedly arranged on the bottom layer in a bonding way.
A method for manufacturing a high-uniformity electric heating film comprises the following steps:
mixing conductive powder with a high polymer material, melting the conductive powder and the high polymer material through a smelting furnace, uniformly mixing, and extruding a flaky conductive sheet with the thickness of 1-2 mm through a precision extruder, wherein the conductive sheet is composed of a positive temperature coefficient thermistor effect resistance layer.
And (II) respectively attaching the metal foil and the metal mesh to the upper side and the lower side of the conducting strip, and bonding and fixing the metal foil and the metal mesh on the conducting strip through rolling of a hot press. The metal foil constitutes a negative electrode layer, and the metal mesh constitutes a positive electrode layer.
And thirdly, electrically connecting the first lead-out lead with the positive electrode layer. The second lead-out wire is electrically connected to the negative electrode layer.
And (IV) insulating and packaging the positive electrode layer, the negative electrode layer, the resistance layer, the corresponding part of the first lead-out wire and the corresponding part of the second lead-out wire in the packaging layer. The first lead-out wire and the second lead-out wire extend out of the packaging layer and are used for being electrically connected with corresponding power supplies.
The technical scheme based on the technical scheme of the manufacturing method of the high-uniformity electric heating film is as follows: the conductive powder in the step (one) can be one or a mixture of more of conductive carbon black, graphene, carbon nano tubes, graphite powder, metal powder and conductive ceramic powder. The high polymer material is a partially crystallized high polymer such as linear low density polyethylene, polyvinylidene fluoride or ethylene-vinyl acetate copolymer.
The invention has the following beneficial effects: (1) the high-uniformity electric heating film has a simple structure, and the no-load temperature deviation of a heating area is less than 2.5%; after partial covering, the temperature deviation of the covered position is less than 10% of that of the uncovered position, and is far lower than the level of the prior art (the no-load temperature deviation of the heating area is more than 10%; after partial covering, the temperature deviation of the covered position is more than 25% of that of the uncovered position). The temperature uniformity of the high-uniformity electric heating film is greatly improved.
(2) The high-uniformity electric heating film provided by the invention has the advantages that the copper metal mesh is used as the positive electrode layer, the resistance layer has the positive temperature coefficient thermistor effect, the metal foil is used as the negative electrode layer to realize the heating function after electrification, the plane flowing mode of the current of the original electric heating film is changed into the normal flowing mode, the current flowing path is shortened, the phenomenon of uneven heating of the resistance layer (namely, the conductive heating layer) caused by the limitation of the preparation process is avoided, the processing and production difficulty is reduced, the yield is greatly improved, and the use safety is also greatly improved.
(3) The resistance layer of the high-uniformity electric heating film has a positive temperature coefficient thermistor effect, the resistance of the resistance layer can be increased after the local temperature of the heating film is increased, the power is reduced, the temperature rise is restrained, and the use safety is further improved.
(4) The positive electrode layer of the high-uniformity electric heating film adopts a metal net structure, the negative electrode layer adopts a metal foil structure, and the metal net and the metal foil both have good thermal conductivity, so that heat can be well spread in the transverse direction, and the temperature uniformity of the high-uniformity electric heating film can be improved.
Drawings
Fig. 1 is a schematic structural view of a high uniformity electrical heating film according to the present invention.
The reference numbers in the drawings are:
the package layer 1, the bottom layer 11, the surface layer 12,
the positive electrode layer 2 is formed on the positive electrode layer,
the negative electrode layer 3 is formed on the negative electrode layer,
the resistance layer (4) is provided,
a first lead-out wire (5),
and a second lead-out wire 6.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. The orientation of the present invention is described according to the orientation shown in fig. 1, that is, the up-down and left-right directions shown in fig. 1 are the up-down and left-right directions described, and the side facing fig. 1 is the front side and the side facing away from fig. 1 is the rear side.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
It is to be understood that the terms "upper", "lower", "inner", "outer", and the like, indicate orientations or positional relationships based on the positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention or for simplifying the description, but do not indicate that a particular orientation must be present.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
(example 1)
Referring to fig. 1, the high uniformity electric heating film of the present invention includes an encapsulation layer 1, a positive electrode layer 2, a negative electrode layer 3, and a resistance layer 4.
The encapsulation layer 1 includes a bottom layer 11 and a top layer 12. The bottom layer 11 and the surface layer 12 are made of the same material, and can be made of a polyester film, a polyvinyl chloride film or an organic silicon rubber film.
The positive electrode layer 2 is a metal mesh, in this embodiment, a copper mesh made of red copper material, and the mesh of the copper mesh is 40 to 200 meshes, in this embodiment, 100 meshes. The metallic copper mesh is directly available on the market. The copper mesh is electrically connected with a first lead-out wire 5, and the first lead-out wire 5 is a sheathed wire.
The negative electrode layer 3 is formed of a metal foil, and this embodiment uses an aluminum material for an aluminum foil having a thickness of 15 to 30 micrometers, and this embodiment uses an aluminum foil having a thickness of 20 micrometers. The aluminum foil is electrically connected with a second lead-out wire 6, and the second lead-out wire 6 is a sheath wire.
The resistance layer 4 is a conductive sheet having a positive temperature coefficient thermistor effect, and the thickness of the conductive sheet is 1 to 2 mm. The positive electrode layer 2 is fixedly adhered to the lower side of the conducting sheet, embedded in the conducting sheet and electrically connected with the conducting sheet in a contact way; the negative electrode layer 3 is fixedly bonded to the upper side of the conductive sheet and is in surface contact electrical connection with the conductive sheet.
The positive electrode layer 2, the negative electrode layer 3, the resistance layer 4, the corresponding part of the first lead-out wire 5 and the corresponding part of the second lead-out wire 6 are insulated and encapsulated between the bottom layer 11 and the surface layer 12 of the encapsulation layer 1, and are bonded and fixed with the bottom layer 11 or the surface layer 12, and the first lead-out wire 5 and the second lead-out wire 6 extend out of the encapsulation layer 1 and are used for being electrically connected with corresponding power supplies. The surface layer 12 is adhesively fixed by its periphery to the base layer 11, thereby insulatively encapsulating the positive electrode layer 2, the negative electrode layer 3, the resistive layer 4, the corresponding portion of the first lead-out wire 5, and the corresponding portion of the second lead-out wire 6.
The manufacturing method of the high-uniformity electric heating film comprises the following steps:
and (I) manufacturing the resistance layer 4. Mixing conductive powder with a high polymer material, melting the conductive powder and the high polymer material through a smelting furnace, uniformly mixing, and extruding a flaky conductive sheet with the thickness of 1-2 mm through a precision extruder, wherein the conductive sheet forms a resistance layer 4 and has a positive temperature coefficient thermistor effect. The conductive powder can be one or a mixture of more of conductive carbon black, graphene, carbon nano tubes, graphite powder, metal powder and conductive ceramic powder; the high polymer material is a partially crystallized high polymer such as linear low density polyethylene, polyvinylidene fluoride or ethylene-vinyl acetate copolymer.
Respectively attaching the metal foil and the metal mesh to the upper side and the lower side of the conducting strip, and bonding and fixing the metal foil on the upper side of the conducting strip through rolling of a hot press, wherein the metal foil and the conducting strip form surface contact electric connection; the metal net is embedded into the lower side of the conducting plate and is connected with the conducting plate bonding and fixing motor, and good conduction of the metal net and the conducting plate is achieved. The metal foil constitutes the negative electrode layer 3, and the metal mesh constitutes the positive electrode layer 4.
And (iii) electrically connecting the first lead-out wire 5 to the positive electrode layer 4. The second lead-out wire 6 is electrically connected to the negative electrode layer 3.
And (IV) insulating and encapsulating the positive electrode layer 2, the negative electrode layer 3, the resistance layer 4, the corresponding portion of the first lead-out wire 5 and the corresponding portion of the second lead-out wire 6 in the encapsulation layer 1. The first lead-out wire 5 and the second lead-out wire 6 extend outwards out of the packaging layer 1 and are used for being electrically connected with corresponding power supplies. The surface layer 12 and the bottom layer 11 are made of the same material and are made of polyester films, polyvinyl chloride films or organic silicon rubber films. The packaging layer 1 is formed by bonding and fixedly connecting the surface layer 12 and the bottom layer 11 at the periphery through a hot pressing process, the positive electrode layer 2, the negative electrode layer 3, the resistance layer 4, the corresponding part of the first lead-out wire 5 and the corresponding part of the second lead-out wire 6 are packaged in an insulating way, and the positive electrode layer 2, the negative electrode layer 3, the resistance layer 4, the corresponding part of the first lead-out wire 5 and the corresponding part of the second lead-out wire 6 are bonded and fixedly connected with the surface layer 12 or the bottom layer 11.
(example 2)
The rest of this example is the same as example 1, except that: the present embodiment does not include the first lead-out wire 5 and the second lead-out wire 6, and directly insulatively encapsulates the positive electrode layer 2, the negative electrode layer 3, and the resistive layer 4 all in the encapsulation layer 1. When the packaging layer is used, a small part of the negative electrode layer is exposed after the corresponding part on the upper side of the packaging layer 1 is hot-melted, and then the corresponding lead is electrically connected to the part and is subjected to corresponding insulation treatment. And (3) carrying out hot melting on the corresponding part of the lower side of the packaging layer 1 to expose a small part of the positive electrode layer, then electrically connecting the corresponding lead on the part, and carrying out corresponding insulation treatment.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A high uniformity electrical heating film, characterized in that: comprises an encapsulation layer, a positive electrode layer, a negative electrode layer and a resistance layer; the positive electrode layer and the negative electrode layer are respectively arranged at the upper side and the lower side of the resistance layer and are electrically connected with the resistance layer in a surface contact way; the packaging layer is used for insulating and packaging the positive electrode layer, the negative electrode layer and the resistance layer, and the positive electrode layer and the negative electrode layer are respectively electrically connected with a power supply through corresponding leads in use.
2. The high uniformity electrical heating film according to claim 1, wherein: the positive electrode layer is composed of a metal mesh.
3. The high uniformity electric heating film according to claim 1 or 2, wherein: the positive electrode layer is electrically connected with a first lead-out wire.
4. The high uniformity electrical heating film according to claim 1, wherein: the negative electrode layer is composed of a metal foil.
5. The high uniformity electric heating film according to claim 1 or 4, wherein: the negative electrode layer is electrically connected with a second lead-out wire.
6. The high uniformity electrical heating film according to claim 1, wherein: the resistance layer is a conductive sheet with positive temperature coefficient thermistor effect, and the thickness of the conductive sheet is 1-2 mm.
7. The high uniformity electrical heating film according to claim 1, wherein: the packaging layer comprises a bottom layer and a surface layer; the bottom layer and the surface layer are made of the same material and are made of a polyester film, a polyvinyl chloride film or an organic silicon rubber film; the surface layer is fixedly arranged on the bottom layer in a bonding way.
8. A manufacturing method of a high-uniformity electric heating film is characterized by comprising the following steps: the method comprises the following steps:
mixing conductive powder with a high polymer material, melting the conductive powder and the high polymer material through a smelting furnace, uniformly mixing, and extruding a flaky conductive sheet with the thickness of 1-2 mm through a precision extruder, wherein the conductive sheet is composed of a positive temperature coefficient thermistor effect resistance layer;
respectively attaching the metal foil and the metal mesh to the upper side and the lower side of the conducting strip, and bonding and fixing the metal foil and the metal mesh on the conducting strip through rolling of a hot press; the metal foil forms a negative electrode layer, and the metal mesh forms a positive electrode layer;
(III) electrically connecting the first lead-out wire with the positive electrode layer; electrically connecting a second lead-out wire to the negative electrode layer;
(IV) insulating and packaging the positive electrode layer, the negative electrode layer, the resistance layer, the corresponding part of the first lead-out wire and the corresponding part of the second lead-out wire in the packaging layer; the first lead-out wire and the second lead-out wire extend out of the packaging layer and are used for being electrically connected with corresponding power supplies.
9. The method of manufacturing a high uniformity electric heating film according to claim 8, wherein: the conductive powder in the step (one) can be one or a mixture of more of conductive carbon black, graphene, carbon nano tubes, graphite powder, metal powder and conductive ceramic powder; the high polymer material is a partially crystallized high polymer such as linear low density polyethylene, polyvinylidene fluoride or ethylene-vinyl acetate copolymer.
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| CN201910862394.4A CN112312597A (en) | 2019-09-12 | 2019-09-12 | High-uniformity electric heating film and preparation method thereof |
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| CN201910862394.4A CN112312597A (en) | 2019-09-12 | 2019-09-12 | High-uniformity electric heating film and preparation method thereof |
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| CN101193467A (en) * | 2006-11-22 | 2008-06-04 | 林基 | Making method for plane macromolecule compound material heating sheet and its heating base material |
| CN101523975A (en) * | 2006-10-17 | 2009-09-02 | 整合公司 | Heating element |
| CN101681703A (en) * | 2007-02-13 | 2010-03-24 | 蒂萨公司 | Intrinsic heatable hot melt adhesive sheet materials |
| CN206433199U (en) * | 2017-01-06 | 2017-08-22 | 深圳山源电器股份有限公司 | A kind of ceramic PTC heat dissipation base |
| CN210579283U (en) * | 2019-09-12 | 2020-05-19 | 江苏烯泰石墨烯应用技术研究院有限公司 | High-uniformity electric heating film |
-
2019
- 2019-09-12 CN CN201910862394.4A patent/CN112312597A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101523975A (en) * | 2006-10-17 | 2009-09-02 | 整合公司 | Heating element |
| CN101193467A (en) * | 2006-11-22 | 2008-06-04 | 林基 | Making method for plane macromolecule compound material heating sheet and its heating base material |
| CN101681703A (en) * | 2007-02-13 | 2010-03-24 | 蒂萨公司 | Intrinsic heatable hot melt adhesive sheet materials |
| CN206433199U (en) * | 2017-01-06 | 2017-08-22 | 深圳山源电器股份有限公司 | A kind of ceramic PTC heat dissipation base |
| CN210579283U (en) * | 2019-09-12 | 2020-05-19 | 江苏烯泰石墨烯应用技术研究院有限公司 | High-uniformity electric heating film |
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