CN113242618B - Heat conduction and heat preservation integrated graphene heating film - Google Patents
Heat conduction and heat preservation integrated graphene heating film Download PDFInfo
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- CN113242618B CN113242618B CN202110554487.8A CN202110554487A CN113242618B CN 113242618 B CN113242618 B CN 113242618B CN 202110554487 A CN202110554487 A CN 202110554487A CN 113242618 B CN113242618 B CN 113242618B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 70
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 62
- 238000004321 preservation Methods 0.000 title claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000000741 silica gel Substances 0.000 claims abstract description 45
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 45
- 229920000642 polymer Polymers 0.000 claims abstract description 27
- 238000005485 electric heating Methods 0.000 claims abstract description 26
- 230000001681 protective effect Effects 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 20
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- -1 graphite alkene Chemical class 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 4
- 239000011490 mineral wool Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 1
- 229920006332 epoxy adhesive Polymers 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 75
- 238000010276 construction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000002002 slurry Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000004514 thermodynamic simulation Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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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
- H05B3/20—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
-
- 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
- H05B3/146—Conductive polymers, e.g. polyethylene, thermoplastics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Carbon And Carbon Compounds (AREA)
- Surface Heating Bodies (AREA)
Abstract
The solar cell comprises a high-molecular insulating layer, a heat-conducting silica gel layer, a graphene electric heating layer, a reflecting film, a heat-insulating layer and a protective shell. Graphene electric heat layer is broken line shape or wave structure, and is heat conduction silica gel layer from top to bottom on the graphene electric heat layer, it is first polymer insulating layer to go up heat conduction silica gel layer upper surface, heat conduction silica gel layer lower surface splices second polymer insulating layer, reflectance coating, insulating layer and protecting sheathing respectively down. Compared with the prior art, the invention can lead the heat to be conducted upwards in a centralized way and improve the heat utilization rate of the heating film. The heating area can be increased by the aid of the polygonal or wavy structure of the graphene electric heating layer, and indoor heating rate is increased. The invention is of an integrated structure, simplifies the steps of the heating film during laying, and simultaneously the protective shell can support and protect the whole film structure, thereby prolonging the service life of the heating film.
Description
Technical Field
The invention belongs to a heating material, relates to the technical field of graphene heating floor heating, and particularly relates to a graphene heating film with a good heat insulation structure, which is particularly suitable for building heating.
Background
Since the discovery of the beginning of the 21 st century, graphene is considered to be a revolutionary material in the future due to its excellent optical, electrical, mechanical properties, and the like. Based on the excellent electric conduction and heat conduction performance of graphene, heating products using graphene as a heating element are increasing in the market. The graphene heating floor heating film is particularly fast in development, compared with a traditional water heating floor heating system, the graphene heating film is fast in heating speed, and the ground temperature can be sensed within 30 minutes after the graphene heating film is electrified; in the aspect of maintenance cost, the concrete can be used for a long time after one-time construction; meanwhile, the temperature can be intelligently controlled in a partitioning manner, and energy consumption is saved.
However, the commercial graphene heating film generally has the defects of too fast heat dissipation, insufficient heat preservation capability and the like of the heating film, so that the overall heating efficiency is reduced; in addition, the graphene heating film usually needs to be treated on the ground during construction and installation, such as installation of an insulating layer, a thermal insulating layer and the like in advance. For example, chinese patent CN111163540A discloses a graphene heating film, in which a graphene electrothermal layer is located between an upper polymer insulating film and a lower polymer insulating film, heat generated by the heating layer is dissipated through the insulating films, and in practical application, ground is required to be subjected to heat preservation and insulation treatment due to the absence of a heat preservation structure. In chinese patent CN107152143A, a method for constructing a floor heating mat of a wood floor with a graphene heating film is disclosed, wherein a pre-treatment is required in a specific floor heating mat construction process, for example, a heat insulating layer of a heat insulating layer is installed in advance, and a pre-treatment heat insulating effect needs to be checked, so that a construction process is complicated, and requirements on technical levels of constructors are high.
To above these problems, when installing in order to solve graphite alkene ground heating film on the market, heat preservation and reflection stratum need be laid in advance, all need utilize the sticky tape to bond between every layer in addition, lead to the installation at every turn all need consume certain time, and the heating film has the too fast heat preservation ability of heat dissipation when using not enough, make the unable fine heat of utilization of user, we have invented a heat conduction heat preservation integration graphite alkene heating film that has good heat preservation, the convenient integration novel structure of construction.
Disclosure of Invention
In order to achieve the purpose, the heat conduction and insulation integrated graphene heating film adopts the following technical scheme:
the utility model provides a heat conduction heat preservation integration graphite alkene heating film which characterized in that: it includes protecting sheathing, first polymer insulating film, goes up heat conduction silica gel layer, graphite alkene electric heat layer, lower heat conduction silica gel layer, second polymer insulating film, reflectance coating and insulating layer. The first polymer insulating film, the upper heat-conducting silica gel layer, the lower heat-conducting silica gel layer, the graphene electric heating layer, the second polymer insulating film, the reflecting film and the heat insulation layer are fixed in the protective shell from top to bottom.
According to the present invention, to achieve the above object, the first polymer insulating film and the second polymer insulating film are polyimide films, and the film thickness is 100-; the heat-conducting silica gel layer has heat-conducting and insulating properties, and is arranged on the upper heat-conducting silica gel layer and the lower heat-conducting silica gel layerThe thickness of the heat-conducting silica gel layer is 200 and 500 mu m; the graphene electric heating layer is positioned between the upper heat conduction silica gel layer and the lower heat conduction silica gel layer, the heat conduction silica gel layer plays a role in heat conduction and can also disperse pressure when the graphene electric heating layer is under pressure, and the graphene electric heating layer is prevented from being broken due to overlarge local pressure; the reflecting film is an aluminum foil or a tin foil, and the thickness of the reflecting film is 100-200 mu m; the heat insulation layer is made of rock wool board heat insulation materials, the rock wool board has stable properties in the heating film and can play a good role in heat insulation, and the thickness of the heat insulation layer is 0.4-1.5 cm; the protective shell is made of polyvinyl chloride composite material with low thermal expansion coefficient, and the thermal expansion coefficient is less than 30 multiplied by 10 -6 And the protective shell wraps three sides of the heating film to play roles of protection and fixation, the heating film can be used only by assembling and combining the heating film and then paving a floor layer during installation, the construction steps are simplified, the wall thickness of the shell is 0.5-1.0cm, the width is 60-100cm, and the length can be designed according to site requirements.
In order to enable the graphene electric heating layer and the conductive electrode to have good adhesive force, the conductive paste is used as the electrode, and compared with the conductive metal foil strip, the conductive paste has better adhesive force and can also effectively avoid the graphene electric heating layer from being punctured or broken when being stressed.
In order to improve the heating efficiency of the graphene heating film, the graphene electric heating layer is designed into a sawtooth or wave-shaped structure, and the surface area of the heating layer is increased, so that the heating efficiency of the graphene heating film is improved. The size of the zigzag structure is as follows: length of repeating unit L 1 1-2cm, height H 1 400-800 μm; the wave structure size: repeat unit length L 2 1-2cm, height H 2 Is 400-800 μm, and the repeating units are connected with each other in a smooth transition way.
According to the invention, compared with the prior art, the method has the following advantages:
the graphene heating film disclosed by the invention is of an integrated structure, is simple in installation process, does not need to lay an insulating layer and a reflecting layer in advance, is not easy to cause poor insulating effect and poor heat conduction due to construction, and cannot be rapidly cooled after power failure.
The protective casing can prevent sharp protrusions on the ground and large particles from puncturing the heating film, achieves the protective effect, and can also play the effects of water resistance and electric leakage resistance.
The upper heat-conducting silica gel layer and the lower heat-conducting silica gel layer in the structure have good elasticity and toughness and the characteristic of no electric conduction, so that risks such as short circuit of a circuit can be avoided; the pressure can be dispersed when local excessive pressure is applied, and the effect of protecting the graphene electric heating layer is achieved.
The graphene electric heating layer is of a sawtooth or wave-shaped structure, so that the heating area of the graphene can be increased, and more heat can be emitted during heating; the reflection film can reflect heat emitted by the graphene electric heating layer, so that heat is reduced from being transmitted downwards, and meanwhile, the heat can be radiated to the upper layer; the heat insulation layer can reduce heat loss from the lower layer and also can achieve the effects of heat preservation and heat insulation; through cooperation reflectance coating and insulating layer, it is higher to enable graphite alkene heating film heating efficiency on unit area.
To prove that the heating effect of the heating film can be effectively improved by increasing the area of the graphene electric heating layer, the data in table 1 are obtained through finite element ANSYS software based on steady-state thermodynamic simulation:
table 1:
the first structure, the second structure and the comparative example structure in the graphene electric heating layer structure respectively mean that the graphene electric heating layer of the graphene heating film is of a sawtooth structure, a wave structure and a plane structure;
simulation conditions are as follows: the heating temperature of the graphene electric heating layer is set to 65 ℃, the ambient temperature is 20 ℃, and the air convection coefficient is 12.5W/(m) 2 ·℃)；
The data of table 1 show that, through the area that generates heat that improves the electric heat layer, can effectively improve the average temperature of whole heating film, the minimum temperature of heating film is in the position of protecting sheathing bottom simultaneously, and the analog temperature difference of three kinds of structures is little, has reflected first polymer insulating film, go up heat conduction silica gel layer, graphite alkene electric heat layer, heat conduction silica gel layer down, second polymer insulating film, reflective coating and insulating layer from the top down fix the effect that the whole heating film structural design in protecting sheathing can effectually play the heat preservation, reflection separation heat radiates downwards.
Drawings
Fig. 1 is a schematic view of a first structure of a graphene heating film according to an embodiment of the present invention;
fig. 2 is a schematic view of a second structure of the graphene heating film according to the embodiment of the invention;
fig. 3 is a heating simulation diagram of a first structure of a graphene heating film according to an embodiment of the present invention;
fig. 4 is a heating simulation diagram of a second structure of the graphene heating film according to the embodiment of the invention;
FIG. 5 is a heat generation simulation diagram of a comparative example of the graphene heat generation film according to an embodiment of the present invention (the graphene electrothermal layer has a planar structure);
in the figure: 1. a protective housing; 2. a first polymer insulating film; 3. a heat conducting silica gel layer is arranged; 4. a graphene electrothermal layer; 5. a lower heat-conducting silica gel layer; 6. a second polymer insulating film; 7. a reflective film; 8. an insulating layer.
Detailed Description
The novel graphene heating film of the present invention will be further explained below with reference to the drawings of the specification. The described embodiments are only some embodiments of the invention, not all embodiments.
A heat conduction and insulation integrated graphene heating film is composed of a protective shell 1, a first high polymer insulating film 2, an upper heat conduction silica gel layer 3, a graphene electric heating layer 4, a lower heat conduction silica gel layer 5, a second high polymer insulating film 6, a reflecting film 7 and a heat insulation layer 8. The first polymer insulation film 2, the upper heat conduction silica gel layer 3, the graphene electric heating layer 4, the lower heat conduction silica gel layer 5, the second polymer insulation film 6, the reflecting film 7 and the heat insulation layer 8 are fixed in the protective shell 1 from top to bottom.
With reference to the attached figures 1, 2, in terms of materials used and dimensions of the invention:
the first polymer insulating film 2 and the second polymer insulating film 6 both adopt polyimide films, and the film thickness is 500 mu m;
the thickness of the upper heat-conducting silica gel layer 3 and the lower heat-conducting silica gel layer 4 is 300 mu m;
the graphene electric heating layer 4 is positioned between the upper heat-conducting silicon adhesive layer 3 and the lower heat-conducting silicon adhesive layer 4, and is made of graphene slurry, and the thickness of the graphene electric heating layer is 50 micrometers;
the reflecting film 7 is an aluminum foil, and the thickness of the reflecting film is 150 mu m;
the heat insulation layer 8 is made of rock wool board heat insulation material, and the thickness of the heat insulation layer 8 is 1 cm;
the protective shell 1 used in the invention is a polyvinyl chloride composite material with low thermal expansion coefficient, and the thermal expansion coefficient is less than 30 multiplied by 10 -6 And the protective shell wraps three sides of the heating film to play a role in protection, the wall thickness of the shell is 1.0cm, and the width of the shell is 100 cm.
The conductive electrode adopts conductive slurry, the conductive slurry is positioned at the position 2cm away from the side gap at two sides of the graphene electric heating layer 3, the width of the conductive slurry is 1.5cm, and the thickness of the conductive slurry is 8 mu m;
in order to make the graphene electric heating layer 4 have a larger heating area and thus achieve higher heating efficiency, the upper heat-conducting silica gel layer 3 and the lower heat-conducting silica gel layer 5 are given a wavy shape by using a mold, and then graphene slurry is coated on the surface of the lower heat-conducting silica gel layer 5.
Claims (1)
1. The utility model provides a heat conduction heat preservation integration graphite alkene heating film which characterized in that: the solar cell comprises a protective shell, a first high-molecular insulating film, an upper heat-conducting silica gel layer, a graphene electric heating layer, a lower heat-conducting silica gel layer, a second high-molecular insulating film, a reflecting film and a heat insulation layer; the first polymer insulating film, the upper heat-conducting silica gel layer, the graphene electric heating layer, the lower heat-conducting silica gel layer, the second polymer insulating film, the reflecting film and the heat insulation layer are sequentially fixed in the protective shell from top to bottom; the graphene electrothermal layer is combined on the lower heat-conducting silica gel layer through a coating process, the first high-molecular insulating film and the upper heat-conducting silica gel layer, the upper heat-conducting silica gel layer and the graphene electrothermal layer, the lower heat-conducting silica gel layer and the second high-molecular insulating film, the second high-molecular insulating film and the reflecting film, the reflecting film and the heat-insulating layer, and the heat-insulating layer and the protective shell are combined together in an adhesion mode, and the adhesive is EVA thermosol or acrylic acid adhesive or epoxy adhesive; the glue joint between the first high polymer insulating film and the upper heat-conducting silica gel layer, between the upper heat-conducting silica gel layer and the graphene electric heating layer, between the lower heat-conducting silica gel layer and the second high polymer insulating film, between the second high polymer insulating film and the reflecting film, between the reflecting film and the heat-insulating layer and between the heat-insulating layer and the protective shell adopts a spraying process; the first polymer insulating film and the second polymer insulating film are polyimide films, and the film thickness is 100-; the thickness of the upper heat-conducting silica gel layer and the lower heat-conducting silica gel layer is 200-500 mu m; the graphene electric heating layer is positioned between the upper heat-conducting silica gel layer and the lower heat-conducting silica gel layer; the reflecting film is an aluminum foil or a tin foil, and the thickness of the reflecting film is 100-200 mu m; the heat insulation layer is made of rock wool board heat insulation material, and the thickness of the heat insulation layer is 0.4-1.5 cm; the protective shell is made of polyvinyl chloride composite material with low thermal expansion coefficient less than 30 multiplied by 10 -6 The protective shell wraps three sides of the heating film to play a role in protection, the wall thickness of the shell is 0.5-1.0cm, and the width of the shell is 60-100 cm; graphite alkene electric heat layer is sawtooth or wave structure, sawtooth structure size: length of repeating unit L 1 1-2cm, height H 1 400-800 μm; the wave structure size: length of repeating unit L 2 1-2cm, height H 2 Is 400-800 μm, and the repeating units are connected with each other in a smooth transition way.
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| CN115387573A (en) * | 2022-08-23 | 2022-11-25 | 东北林业大学 | Novel graphite alkene electrical heating wood composite energy storage floor |
| CN116669240B (en) * | 2023-07-28 | 2023-10-17 | 绵阳中物烯科技有限公司 | Resistor and heating system based on subregion that graphite alkene generates heat |
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| CN211184273U (en) * | 2019-10-29 | 2020-08-04 | 乔韩钢 | Graphene heating film |
| CN212227196U (en) * | 2020-05-28 | 2020-12-25 | 广东康烯科技有限公司 | Ceramic tile structure warms up graphite alkene |
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|---|---|---|---|---|
| CN211184273U (en) * | 2019-10-29 | 2020-08-04 | 乔韩钢 | Graphene heating film |
| CN111278176A (en) * | 2020-04-15 | 2020-06-12 | 广东康烯科技有限公司 | Graphene heating film and graphene heating device |
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