CN111586905A - Table and graphene heating sheet thereof - Google Patents
Table and graphene heating sheet thereof Download PDFInfo
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- CN111586905A CN111586905A CN202010643294.5A CN202010643294A CN111586905A CN 111586905 A CN111586905 A CN 111586905A CN 202010643294 A CN202010643294 A CN 202010643294A CN 111586905 A CN111586905 A CN 111586905A
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- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 118
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 117
- 238000010438 heat treatment Methods 0.000 title claims abstract description 110
- 239000000463 material Substances 0.000 claims abstract description 43
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 79
- 239000003575 carbonaceous material Substances 0.000 claims description 33
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 239000004020 conductor Substances 0.000 claims description 13
- 239000002270 dispersing agent Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 3
- 239000004964 aerogel Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 238000005187 foaming Methods 0.000 claims description 3
- 239000011491 glass wool Substances 0.000 claims description 3
- 239000011490 mineral wool Substances 0.000 claims description 3
- 239000010451 perlite Substances 0.000 claims description 3
- 235000019362 perlite Nutrition 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011496 polyurethane foam Substances 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims 3
- 239000010439 graphite Substances 0.000 claims 3
- -1 graphite alkene Chemical class 0.000 claims 3
- 239000012528 membrane Substances 0.000 claims 2
- 239000004411 aluminium Substances 0.000 claims 1
- 239000005030 aluminium foil Substances 0.000 claims 1
- 230000006870 function Effects 0.000 abstract description 8
- 229920002799 BoPET Polymers 0.000 abstract description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
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- 230000006698 induction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000554 physical therapy Methods 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 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
- H05B3/10—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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B13/00—Details of tables or desks
- A47B13/08—Table tops; Rims therefor
-
- 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
- H05B3/20—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
- H05B3/36—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heating conductor embedded in insulating material
Landscapes
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a table board which comprises a table board body, a graphene heating sheet, a reflecting layer and a table bottom board, wherein the graphene heating sheet is arranged on the bottom surface of the table board body, the reflecting layer is arranged on the bottom surface of the graphene heating sheet, and the table bottom board is arranged on the bottom surface of the reflecting layer. The graphene heating sheet comprises a base material and a graphene heating film coated on one side or two sides of the base material, and the base material comprises an aramid fiber layer, a PET film or a PI film. The graphene heating sheet is bendable, long in service life, low in cost and high in heating speed; the table board is suitable for table tops of dining tables, office tables, learning tables and the like, has the heating function while playing a basic function, and is wide in application range.
Description
Technical Field
The invention belongs to the technical field of graphene, and particularly relates to a table board and a graphene heating sheet thereof.
Background
The temperature of cooked food can gradually decrease when the cooked food is placed on a table, particularly in winter with lower room temperature, the temperature of the food is particularly rapidly decreased, and the condition that the food is cooled before eating is often occurred. In the prior art, a heating device (such as an induction cooker) using an electromagnetic principle is used for preserving heat of food, but the heating device using the electromagnetic principle has a complex structure and large volume and weight, has special requirements (flat-bottom metal containers) for containers for holding food, is not suitable for heating ceramic dishes commonly used in Chinese families, and has large limitation when in use. Therefore, there is a need to develop a heating device with simple and light structure and wide application range for keeping food on table warm.
In areas without warm air and with low temperature in winter, office and study can be greatly influenced, so that the heating office table or the study table is also necessary.
Disclosure of Invention
The invention aims to provide a graphene heating sheet which is bendable, long in service life, low in cost and high in heating speed.
Another object of the present invention is to provide a table top, which includes a graphene heating sheet, wherein the graphene heating sheet is bendable, has a long service life, a low cost and a fast heating speed, and is suitable for table tops of dining tables, office tables, learning tables, etc., and has a heating function and a wide application range while performing a basic function.
In order to achieve the purpose, the invention provides a graphene heating sheet which comprises a base material and a graphene heating film coated on one surface or two surfaces of the base material, wherein the base material comprises an aramid fiber layer, a PET film or a PI film. Preferably, the aramid fiber layer is selected for the substrate, the PET film is widely applied in the field of traditional heating films, but the PET film and the PI film have the defects of easy aging, easy falling, folding intolerance, short service life and the like, the aramid fiber layer and the graphene heating film are bonded more tightly and are not easy to age and fall, the aramid fiber layer is folding tolerant, and the service life is longer. Specifically, the aramid fiber layer can be folded into a roll film shape and can be cut into any size or any shape. In addition, the graphene heating sheet disclosed by the invention also has the following advantages: the weight is light, and the composite material can be compounded with other materials; hydrophobicity, stamping, acid and alkali resistance; high efficiency, energy saving, fast heating, and second heating under certain power density, i.e. 1s heating up to several hundred deg.C, such as 300 deg.C.
Furthermore, the substrate and the graphene heating film thereon form a heating unit, the graphene heating sheet further comprises an upper insulating layer and a lower insulating layer, and at least one heating unit is arranged between the upper insulating layer and the lower insulating layer at intervals.
Furthermore, a copper conductor is connected to the graphene heating film, the copper conductor is a printed copper layer, and the copper conductor is electrically connected to a power line, so that the power line and the copper conductor supply power to the graphene heating film for heating.
Further, the graphene heating film comprises a tubular carbon material and a sheet-shaped graphene material, and the tubular carbon material and the sheet-shaped graphene material are uniformly distributed. The uniformly distributed flaky graphene materials are at least horizontally connected in an electric mode, the tubular carbon materials are uniformly distributed among the flaky graphene materials, and each layer of flaky graphene material is connected at least in the thickness direction, so that electric energy can be instantly conducted in the three-dimensional direction, namely each position of the graphene heating film, and the heating is uniform; moreover, under the condition of electrification, the graphene heating film can immediately excite the resonance effect among carbon atoms, generate phonon oscillation and immediately release far infrared rays, electric energy is instantly converted into heat energy, and the heated substance can be rapidly heated under the action of atomic resonance and far infrared rays; in addition, the tubular carbon material is lower in cost than the sheet graphene material, and the graphene heating film doped with the tubular carbon material is lower in cost and higher in heating speed.
Further, the mass ratio of the tubular carbon material to the sheet graphene material is (1-5): 1-5, the length of the tubular carbon material is 100-200 um, and the D of the tubular carbon material is50Is 10-30 um, the graphene material is single-layer graphene.
Further, the graphene heating film further comprises a dispersing agent and a binder, wherein the dispersing agent is CMC, and the binder is SBR.
The invention also provides a table board, which comprises a table board, a graphene heating sheet, a reflecting layer and a table bottom board, wherein the graphene heating sheet is arranged on the bottom surface of the table board, the reflecting layer is arranged on the bottom surface of the graphene heating sheet, and the table bottom board is arranged on the bottom surface of the reflecting layer.
Further, the table plate further comprises a table side plate, and the table top plate and the table bottom plate are fixed by the table side plate from the side face, so that the graphene heating sheet and the reflecting layer are fixed therebetween.
Further, the desktop plate is of a three-layer structure and comprises an upper heat conduction layer, a lower heat conduction layer and a honeycomb layer clamped between the upper heat conduction layer and the lower heat conduction layer, and the desktop plate is made of heat conduction materials.
Further, the reflecting layer is an aluminum foil, an aluminum-plated steel plate or a floor heating reflecting film; the table bottom plate is made of wood plates, polyurethane foam, polystyrene boards, phenolic foam, aerogel felt, glass wool, rock wool, expanded perlite and micro-nano heat insulation or foaming cement.
The invention has the beneficial effects that: the invention provides a graphene heating sheet which is bendable, long in service life, low in cost and high in heating speed; the table board is suitable for table tops of dining tables, office tables, learning tables and the like, can be directly placed on other table tops needing to generate heat, has the function of generating heat while playing a basic function, and is wide in application range.
Drawings
Fig. 1 is a schematic cross-sectional view of a table of the present invention.
Fig. 2 is a schematic cross-sectional view of the graphene heating sheet according to the present invention.
Fig. 3 is a schematic structural diagram of the graphene heating sheet of the present invention.
Wherein, 1-graphene heating sheet; 2-a reflective layer; 3-a table bottom plate; 4-a table panel; 41-upper heat conducting layer; 42-a honeycomb layer; 43-lower thermally conductive layer; 5-a table side plate; 10-a graphene heating film; 20-aramid fiber layer; a 30-copper conductor; 40-lower insulating layer; 50-an upper insulating layer; 60-power line.
Detailed Description
The "ranges" disclosed herein are in the form of lower and upper limits. There may be one or more lower limits, and one or more upper limits, respectively. The given range is defined by the selection of a lower limit and an upper limit. The selected lower and upper limits define the boundaries of the particular range. All ranges that can be defined in this manner are inclusive and combinable, i.e., any lower limit can be combined with any upper limit to form a range. For example, ranges of 60-120 and 80-110 are listed for particular parameters, with the understanding that ranges of 60-110 and 80-120 are also contemplated. Furthermore, if the minimum range values 1 and 2 are listed, and if the maximum range values 3, 4, and 5 are listed, the following ranges are all contemplated: 1-3, 1-4, 1-5, 2-3, 2-4 and 2-5. In the present invention, all embodiments and preferred embodiments mentioned herein may be combined with each other to form a new technical solution, if not specifically stated.
In the present invention, all the technical features mentioned herein and preferred features may be combined with each other to form a new technical solution, if not specifically stated. In the present invention, all the steps mentioned herein may be performed sequentially or randomly, if not specifically stated, but preferably sequentially.
Example 1:
preparing a graphene heating sheet 1:
adding a binder SBR and a dispersant CMC into a solvent, stirring, uniformly dispersing, and then adding a tubular carbon material and a sheet graphene material, wherein the mass ratio of the tubular carbon material to the sheet graphene material is 1: 5, stirring to obtain graphene slurry; wherein, the length of tubular carbon material is 100 ~ 200um, the D of tubular carbon material5010-30 um, wherein the graphene material is single-layer graphene; adhesive: dispersing agent: the weight ratio of the tubular carbon material to the sheet graphene material is 3: 1: 100, respectively; coating the graphene slurry on two surfaces of an aramid fiber layer 20 in a coating manner, wherein the coating amount of each layer is 0.2ml/cm2(ii) a Drying the solvent, and forming the graphene heating film 10 by the graphene slurry; providing a copper conductor 30 and a power line 60, wherein the copper conductor 30 is a printed copper layer, is electrically connected with the graphene heating film 10 and is electrically connected with the power line 60, and supplies power to the graphene heating film 10 through the power line 60 and the copper conductor 30 for heating; and providing an upper insulating layer 50 and a lower insulating layer 40, forming a heating unit by the aramid fiber layer 20 and the graphene heating film 10 thereon, and arranging at least one heating unit between the upper insulating layer 50 and the lower insulating layer 40 at intervals, thereby preparing the graphene heating sheet 1. Of course, inIn other embodiments, the heating unit may be a single unit, and the whole unit is laid between the upper insulation layer 50 and the lower insulation layer 40.
The structure of the table is detailed below:
the table plate comprises a table top plate 4, a graphene heating sheet 1, a reflecting layer 2, a table bottom plate 3 and a table side plate 5, wherein the graphene heating sheet 1 is arranged on the bottom surface of the table top plate 4, the reflecting layer 2 is arranged on the bottom surface of the graphene heating sheet 1, and the table bottom plate 3 is arranged on the bottom surface of the reflecting layer 2.
The table top plate 4 is of a three-layer structure and comprises an upper heat conduction layer 41, a lower heat conduction layer 43 and a honeycomb layer 42 clamped between the upper heat conduction layer 41 and the lower heat conduction layer 43, the table top plate 4 is made of heat conduction materials, such as aluminum alloy, steel plates and other heat conduction materials, the height of the honeycomb layer 42 can be adjusted as required, the honeycomb layer 42 of the table top plate 4 is also made of the heat conduction materials, heat can be quickly conducted to the upper heat conduction layer 41 from the lower heat conduction layer 43, the honeycomb layer 42 is of a honeycomb structure, a good heat buffering effect is achieved, and heat can be preserved for a long. The tabletop plate 4 can be directly used as a tabletop of a table, such as a dining table, an office table, a learning table, and the like, can be embedded in the tabletop of the table, such as the dining table, the office table, the learning table, and the like, and can also be placed on the tabletop of the table, such as the dining table, the office table, the learning table, and the like.
The reflecting layer 2 is an aluminum foil, an aluminum-plated steel plate or a floor heating reflecting film. The table bottom plate 3 is made of wood plates, polyurethane foam, polyphenyl plates, phenolic foam, aerogel felt, glass wool, rock wool, expanded perlite and micro-nano heat insulation or foaming cement. The table top plate 4 and the table bottom plate 3 are fixed by the table side plate 5 from the side surface, so that the graphene heating sheet 1 and the reflecting layer 2 are fixed therebetween. In the embodiment, the table side plate 5 is a single member and is installed at four sides of the table, specifically, the table side plate 5 has a U-shaped cross section and an upper flange and a lower flange, the edges of the table top plate 4 and the table bottom plate 3 are clamped between the upper flange and the lower flange, specifically, the lower surface of the upper flange is clamped with the upper surface of the edge of the table top plate 4, and the upper surface of the lower flange is clamped with the lower surface of the edge of the table bottom plate 3. Preferably, the fastened table side plate 5 is fixed to the table top plate 4 and/or the table bottom plate 3, such as by screws, glue, etc., which is not limited herein, and any scheme capable of fixing the table side plate 5 is applicable to the present invention. Of course, in other embodiments, the table side panel 5 may be a plate without upper and lower flanges, as long as the table top panel 4 and the table bottom panel 3 can be fixed, and the invention is not limited thereto.
Example 2
The graphene heating sheet 1 and the table are prepared according to the embodiment 1, and the only difference is that: the mass ratio of the tubular carbon material to the sheet graphene material is 2: 3; adhesive: dispersing agent: the weight ratio of the tubular carbon material to the sheet graphene material is 5: 3: 100, respectively; the coating amount of each layer of graphene slurry is 1ml/cm2。
Example 3
The graphene heating sheet 1 and the table are prepared according to the embodiment 1, and the only difference is that: the mass ratio of the tubular carbon material to the sheet graphene material is 5: 1; adhesive: dispersing agent: the weight ratio of the tubular carbon material to the sheet graphene material is 4: 2: 100, respectively; the coating amount of each layer of graphene slurry is 0.4ml/cm2。
Example 4
The graphene heating sheet 1 and the table are prepared according to the embodiment 1, and the only difference is that: the mass ratio of the tubular carbon material to the sheet graphene material is 3: 2; adhesive: dispersing agent: the weight ratio of the tubular carbon material to the sheet graphene material is 3: 3: 100, respectively; the coating amount of each layer of graphene slurry is 0.7ml/cm2。
Comparative example 1
The graphene heating sheet 1 and the table are prepared according to the embodiment 1, and the only difference is that: only the sheet graphene material is added, and the tubular carbon material is not added.
Comparative example 2
The graphene heating sheet 1 and the table are prepared according to the embodiment 1, and the only difference is that: only the tubular carbon material is added, and the sheet graphene material is not added.
Comparative example 3
The graphene heating sheet 1 and the table are prepared according to the embodiment 1, and the only difference is that: the graphene heating sheet 1 is a graphene electric heating film of a PTC-H type which is purchased from the market and has a tsunami brand.
The dimensions of the graphene heat generating sheet 1 of each of examples 1 to 4 and comparative examples 1 to 3 were set as follows: the width of the cloth is 600mm, and the length is 1600 mm. And the far infrared emissivity, the infrared emission wavelength and the electric-thermal conversion efficiency of each graphene heating sheet 1 were measured under the conditions of a working voltage of 0 to 1000V and a working temperature of <400 ℃, and the results are as follows.
| Item | Far infrared emissivity | Infrared emission wavelength | Electric heat conversion efficiency |
| Example 1 | 99.8％ | 2～20um | >99.90％ |
| Example 2 | 99.7％ | 2～20um | >99.90％ |
| Example 3 | 99.9％ | 2～20um | >99.90％ |
| Example 4 | 99.8％ | 2～20um | >99.90％ |
| Comparative example 1 | 97.7％ | 5～300um | 96.1％ |
| Comparative example 2 | 97.1％ | 5～300um | 95.7％ |
| Comparative example 3 | 96.2％ | 10～400um | 95.2％ |
From the above, the graphene heating sheet 1 of the present invention has excellent far infrared emission performance, and when the infrared emission wavelength is 2-20 um, the electrothermal conversion efficiency reaches more than 99.90%. The far infrared wavelength band of 2-20 um has become a safe, effective and widely applied physiotherapy band. Wherein, the infrared emission wavelength of the wave band of 4-14 um can heat the object most effectively.
When the graphene heating sheet 1 is electrified, a resonance effect is generated among carbon atoms of the tubular carbon material, the oscillation electromagnetic wave with the wavelength of 2-20 um, namely phonon oscillation generates heat energy, so that electric energy is converted into heat energy, and the tubular carbon material has high crystallinity and few defects, so that phonon scattering can be prevented, phonon energy is transmitted in a far infrared mode, no internal phonon scattering loss energy exists, the electric heat conversion efficiency is high, and an external object can be rapidly heated.
The graphene heating film 10 comprises a tubular carbon material and a sheet graphene material, wherein the tubular carbon material and the sheet graphene material are uniformly distributed. The uniformly distributed sheet graphene materials are quickly and electrically connected in the horizontal direction, the tubular carbon materials are uniformly distributed among the sheet graphene materials, and each layer of sheet graphene material is connected at least in the thickness direction, so that electric energy can be instantly conducted in the three-dimensional direction, namely each position of the graphene heating film 10, and the heating is uniform; moreover, under the condition of electrification, the graphene heating film 10 can immediately excite the resonance effect among carbon atoms, generate phonon oscillation and immediately release far infrared rays, electric energy is instantly converted into heat energy, and the heated substance can be rapidly heated under the action of atomic resonance and far infrared rays; in addition, the tubular carbon material has lower cost than the sheet graphene material, and the graphene heating film 10 doped with the tubular carbon material has lower cost and higher heating speed.
The base material of the present invention includes an aramid fiber layer, a PET film, or a PI film. Preferably, the aramid fiber layer is selected for the substrate, the PET film is widely applied in the field of traditional heating films, but the PET film and the PI film have the defects of easy aging, easy falling, folding intolerance, short service life and the like, the aramid fiber layer and the graphene heating film are bonded more tightly and are not easy to age and fall, the aramid fiber layer is folding tolerant, and the service life is longer. Specifically, the aramid fiber layer can be folded into a roll film shape and can be cut into any size or any shape. In addition, the graphene heating sheet 1 of the present invention further has the following advantages: the weight is light, and the composite material can be compounded with other materials; hydrophobicity, stamping, acid and alkali resistance; high efficiency, energy saving, fast heating, and second heating under certain power density, i.e. 1s heating up to several hundred deg.C, such as 300 deg.C. The graphene heating sheet 1 is arranged in the table board, so that the thickness of the table board is not increased, and the attractiveness of the table board is not affected; in addition, the table board is suitable for table tops of dining tables, office tables, learning tables and the like, can be directly placed on other table tops needing to generate heat, has the function of generating heat while playing a basic function, and is wide in application range.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (10)
1. The utility model provides a graphite alkene piece that generates heat, its characterized in that, graphite alkene piece that generates heat includes a substrate and coat in the graphite alkene heating film of substrate one side or two sides, the substrate includes aramid fiber layer, PET membrane or PI membrane.
2. The graphene heating sheet according to claim 1, wherein the substrate and the graphene heating film thereon form a heating unit, the graphene heating sheet further includes an upper insulating layer and a lower insulating layer, and at least one heating unit is disposed between the upper insulating layer and the lower insulating layer at intervals.
3. The graphene heating sheet according to claim 1, wherein a copper conductor is connected to the graphene heating film, the copper conductor is a printed copper layer, and the copper conductor is electrically connected to a power line, so as to supply power to the graphene heating film through the power line and the copper conductor for heating.
4. The graphene heating sheet according to claim 1, wherein the graphene heating film includes a tubular carbon material and a sheet-like graphene material, and the tubular carbon material and the sheet-like graphene material are uniformly distributed.
5. The graphene heating sheet according to claim 4, wherein the mass ratio of the tubular carbon material to the sheet graphene material is (1-5): (1-5), the length of the tubular carbon material is 100-200 um, and the D of the tubular carbon material is50Is 10-30 um, the graphene material is single-layer graphene.
6. The graphene exothermic sheet according to claim 1, wherein the graphene exothermic film further comprises a dispersant and a binder, the dispersant is CMC, and the binder is SBR.
7. A table, the table comprising:
a table top panel;
the graphene heating sheet according to any one of claims 1 to 6, wherein the graphene heating sheet is disposed on the bottom surface of the tabletop plate;
the reflecting layer is arranged on the bottom surface of the graphene heating sheet; and
the table bottom plate is arranged on the bottom surface of the reflecting layer.
8. A table as claimed in claim 7, wherein said table further comprises a table side plate laterally securing said table top plate and said table bottom plate, thereby securing said graphene heat generating sheet and said reflective layer therebetween.
9. A table as claimed in claim 7, wherein said table top is a three-layer structure comprising an upper thermally conductive layer, a lower thermally conductive layer, and a honeycomb layer sandwiched between said upper and lower thermally conductive layers, said table top being constructed of a thermally conductive material.
10. A table as claimed in claim 7 wherein the reflective layer is an aluminium foil, an aluminium coated steel sheet or a floor heating reflective film; the table bottom plate is made of wood plates, polyurethane foam, polystyrene boards, phenolic foam, aerogel felt, glass wool, rock wool, expanded perlite and micro-nano heat insulation or foaming cement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010643294.5A CN111586905A (en) | 2020-07-06 | 2020-07-06 | Table and graphene heating sheet thereof |
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| CN202010643294.5A CN111586905A (en) | 2020-07-06 | 2020-07-06 | Table and graphene heating sheet thereof |
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| CN111586905A true CN111586905A (en) | 2020-08-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117135782A (en) * | 2023-09-04 | 2023-11-28 | 东莞市力可电热科技有限公司 | Graphene heating sheet and preparation method thereof |
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2020
- 2020-07-06 CN CN202010643294.5A patent/CN111586905A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117135782A (en) * | 2023-09-04 | 2023-11-28 | 东莞市力可电热科技有限公司 | Graphene heating sheet and preparation method thereof |
| CN117135782B (en) * | 2023-09-04 | 2024-03-22 | 东莞市力可电热科技有限公司 | Graphene heating sheet and preparation method thereof |
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