CN112552792A - Preparation method of graphene heating coating and preparation method of heating sheet - Google Patents
Preparation method of graphene heating coating and preparation method of heating sheet Download PDFInfo
- Publication number
- CN112552792A CN112552792A CN202011449120.1A CN202011449120A CN112552792A CN 112552792 A CN112552792 A CN 112552792A CN 202011449120 A CN202011449120 A CN 202011449120A CN 112552792 A CN112552792 A CN 112552792A
- Authority
- CN
- China
- Prior art keywords
- graphene
- grinding
- coating
- heating
- ceramic panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 100
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 89
- 239000011248 coating agent Substances 0.000 title claims abstract description 87
- 238000000576 coating method Methods 0.000 title claims abstract description 87
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000000227 grinding Methods 0.000 claims abstract description 36
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000002904 solvent Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims description 61
- 238000005507 spraying Methods 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 239000002356 single layer Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000002518 antifoaming agent Substances 0.000 claims description 3
- 239000002480 mineral oil Substances 0.000 claims description 3
- 235000010446 mineral oil Nutrition 0.000 claims description 3
- 239000000025 natural resin Substances 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000011449 brick Substances 0.000 description 8
- 229910002804 graphite Inorganic materials 0.000 description 8
- 239000010439 graphite Substances 0.000 description 8
- -1 graphite alkene Chemical class 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000003292 glue Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 3
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000007666 vacuum forming Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/145—Carbon only, e.g. carbon black, graphite
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
-
- 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]
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention relates to a preparation method of a graphene heating coating, which comprises the following steps: the method comprises the following steps: preparing graphene, resin, an auxiliary agent, a solvent and metal neodymium powder; step two: mixing graphene and an auxiliary agent, adjusting the power of a grinding machine to 300W, controlling the grinding machine to work for 5 hours, and grinding and dispersing; step three: after the grinding in the second step is finished, continuously adding metal neodymium powder, controlling the grinder to work for 2 hours, and grinding and dispersing; step four: after the grinding is finished, continuing adding resin, controlling the grinder to work for 3 hours, and grinding and dispersing; step five: and after the grinding is finished, continuously adding the solvent, controlling the grinder to work for 1 Miss, and grinding and dispersing to form the graphene heating coating solution. The graphene is dispersed into the graphene solution through the steps, so that the graphene solution with high heat conductivity is obtained, the operation is simple, and the cost is low.
Description
Technical Field
The invention relates to a preparation method of a graphene heating coating and a preparation method of a heating sheet.
Background
The heating sheet in the prior art uses a resistance wire as a heating device, the resistance wire generally adopts nickel-chromium alloy, the resistance value of the nickel-chromium alloy is low, the density is high, the thickness cannot be broken through, the electric heating conversion value is low, the heating rate is small, the heating element cannot have the functions of constant temperature and power compensation, the structure of an electric heating system is complex, the heat quality is low and the like, and the nickel-chromium alloy is ferrite alloy and has the shortages of normal temperature, medium temperature and high temperature brittleness, so that the graphene heating coating with quick heating and good heating effect and the heating sheet prepared by the graphene heating coating are very important for replacing the traditional heating sheet.
Disclosure of Invention
The first purpose of the invention is to provide the graphene heating coating with high heat conductivity and low cost.
The second purpose of the invention is to provide a heating device which can generate heat quickly. A preparation method of a heating sheet with high temperature resistance, high toughness and long service life.
The first object of the present invention is achieved by:
a preparation method of a graphene heating coating is characterized by comprising the following steps:
the method comprises the following steps: preparing graphene, resin, an auxiliary agent, a solvent and metal neodymium powder;
step two: mixing graphene and an auxiliary agent, adjusting the power of a grinding machine to 300W, controlling the grinding machine to work for 5 hours, and grinding and dispersing;
step three: after the grinding in the second step is finished, continuously adding metal neodymium powder, controlling the grinder to work for 2 hours, and grinding and dispersing;
step four: after the grinding is finished, continuing adding resin, controlling the grinder to work for 3 hours, and grinding and dispersing;
step five: and after the grinding is finished, continuously adding the solvent, controlling the grinder to work for 1 Miss, and grinding and dispersing to form the graphene heating coating solution.
The graphene is a new carbon material with a single-layer two-dimensional honeycomb lattice structure formed by tightly stacking carbon atoms, has excellent electrical conductivity and outstanding heat conductivity, is dispersed into the graphene solution through the steps, so that the graphene solution with high heat conductivity is obtained, and is simple to operate and low in cost.
The first object of the present invention can also be solved by the following technical measures:
further, the resin is epoxy resin, the auxiliary agent is a dispersing agent, and the solvent is ethanol.
Further, the formula of the graphene heating coating solution comprises the following components in percentage by weight:
graphene: 1% -5%;
resin: 5% -25%;
auxiliary agent: 1% -20%;
solvent: 75% -95%;
metal neodymium powder: 1% -5%;
the raw materials used by the graphene solution formula are rich, and the raw materials are easy to collect, so that the thickness of the sprayed graphene heating coating is light and thin, the graphene heating coating is easy to process, the graphene solution is sprayed on the insulating substrate to form a heating plate, the substrate of any specification can be sprayed with the graphene solution, and the application range is wide.
Further, the graphene comprises single-layer graphene or double-layer graphene, the resin comprises natural resin or synthetic resin, the auxiliary agent comprises a thickening agent or a dispersing agent or a defoaming agent, and the solvent comprises ethanol or toluene or mineral oil.
The second object of the present invention is achieved by:
a preparation method of a heating sheet adopting graphene heating paint comprises the following steps:
the method comprises the following steps: preparing a conductive coating, a ceramic panel and a graphene heating coating, and spraying the conductive coating on the ceramic panel;
step two: putting the ceramic panel sprayed with the conductive coating in the first step into an oven, adjusting the temperature of the oven to 120 ℃, curing for 1 hour and 30 minutes, taking out after curing, and standing and cooling at normal temperature;
step three: spraying the graphene heating coating on the ceramic panel, wherein the graphene heating coating covers a part of conductive silver paste, and a part of conductive silver paste is exposed out of the graphene heating coating;
step four: putting the ceramic panel sprayed with the conductive coating and the graphene heating coating in the third step into an oven, adjusting the temperature of the oven to 800 ℃, curing for 3 hours, taking out after curing, and standing and cooling at normal temperature to form a heating sheet;
step five: and D, conducting power-on test on the heating sheet obtained in the step four for 30 minutes, and testing whether the performance of the heating sheet meets a preset value.
The ceramic has the advantages of insulativity, thermal conductivity, good heat-collecting property and high temperature resistance, the graphene heating coating is sprayed on the ceramic panel by the preparation method of the heating sheet by utilizing the graphene heating coating, so that the heating brick with high thermal mass, high thermal conductivity, high heat-collecting property, high stability, long service life, quick heating effect and high heating temperature is prepared, and the heating temperature can even reach 400-plus-800 ℃ heating sheet, thereby meeting the user requirements.
The second object of the present invention can also be solved by the following technical measures:
further, the conductive coating is conductive silver paste, the conductive coating is sprayed on two sides of the end face of the ceramic panel, and the spraying width of the conductive coating is 6 mm.
Further, the thickness of the graphene heating coating is 1-10 um.
Further, in the step one, a process of forming through holes in the ceramic panel at intervals is additionally arranged. The ceramic panel is provided with the through holes at intervals, so that the heat conduction effect of the ceramic panel is enhanced, the ceramic panel can heat more quickly, the heating temperature is increased, and the user requirements are met.
Further, the through holes are round holes or honeycomb holes.
The invention has the following beneficial effects:
according to the invention, the graphene is a new carbon material with a single-layer two-dimensional honeycomb lattice structure formed by tightly stacking carbon atoms, has excellent electrical conductivity and outstanding heat conductivity, and is dispersed into the graphene solution through the steps, so that the graphene solution with high heat conductivity is obtained, and the operation is simple and the cost is low.
According to the invention, the raw materials used in the formula of the graphene solution are rich, and the raw materials are easy to collect, so that the thickness of the sprayed graphene heating coating is light and thin, the processing is easy, the heating plate can be formed by spraying the graphene solution on the insulating substrate, the graphene solution can be sprayed on substrates of any specification, and the application range is wide.
According to the invention, the ceramic has the advantages of insulativity, thermal conductivity, good heat-collecting property and high temperature resistance, the graphene heating coating is sprayed on the ceramic panel by the preparation method of the heating sheet by using the graphene heating coating, so that the heating brick with high thermal mass, high thermal conductivity, high heat-collecting property, high stability, long service life, quick heating effect and high heating temperature is prepared, and the heating temperature can even reach 800 ℃ of 400 plus materials, so that the requirements of users are met.
Drawings
Fig. 1 is a schematic view of a heat generating sheet.
Fig. 2 is a schematic view of a ceramic outer cover of a heating brick for a plastic suction machine.
Fig. 3 is a schematic cross-sectional view of a heating brick for a vacuum forming machine.
Fig. 4 is an enlarged view of a portion a of fig. 3.
Fig. 5 is an assembly view of a heating brick for a vacuum forming machine.
Detailed Description
The invention is further described with reference to the following figures and examples:
a preparation method of a graphene heating coating is characterized by comprising the following steps:
the method comprises the following steps: preparing 2.5g of graphene, 2.5g of epoxy resin, 10g of dispersing agent, 73g of ethanol and 2g of metal neodymium powder;
step two: mixing graphene with a dispersion machine, adjusting the power of a grinding machine to 300W, controlling the grinding machine to work for 5 hours, and grinding and dispersing;
step three: after the grinding in the second step is finished, continuously adding metal neodymium powder, controlling the grinder to work for 2 hours, and grinding and dispersing;
step four: after the grinding is finished, continuously adding epoxy resin, controlling the grinder to work for 3 hours, and grinding and dispersing;
step five: and after the grinding is finished, continuing adding ethanol, controlling the grinder to work for 1 Miss, and grinding and dispersing to form the graphene heating coating solution.
Further, the formula of the graphene heating coating solution comprises the following components in percentage by weight:
graphene: 1% -5%;
resin: 5% -25%;
auxiliary agent: 1% -20%;
solvent: 75% -95%;
metal neodymium powder: 1% -5%;
further, the graphene comprises single-layer graphene or double-layer graphene, the resin comprises natural resin or synthetic resin, the auxiliary agent comprises a thickening agent or a dispersing agent or a defoaming agent, and the solvent comprises ethanol or toluene or mineral oil.
A preparation method of a heating sheet adopting graphene heating paint comprises the following steps:
the method comprises the following steps: preparing a conductive coating, a ceramic panel and a graphene heating coating, and spraying the conductive coating on the ceramic panel;
step two: putting the ceramic panel sprayed with the conductive coating in the first step into an oven, adjusting the temperature of the oven to 120 ℃, curing for 1 hour and 30 minutes, taking out after curing, and standing and cooling at normal temperature;
step three: spraying the graphene heating coating on the ceramic panel, wherein the graphene heating coating covers a part of conductive silver paste, and a part of conductive silver paste is exposed out of the graphene heating coating;
step four: putting the ceramic panel sprayed with the conductive coating and the graphene heating coating in the third step into an oven, adjusting the temperature of the oven to 800 ℃, curing for 3 hours, taking out after curing, and standing and cooling at normal temperature to form a heating sheet;
step five: and D, conducting power-on test on the heating sheet obtained in the step four for 30 minutes, and testing whether the performance of the heating sheet meets a preset value.
Further, the conductive coating is conductive silver paste, the conductive coating is sprayed on two sides of the end face of the ceramic panel, and the spraying width of the conductive coating is 6 mm.
Further, the thickness of the graphene heating coating is 1-10 um.
Further, in the step one, a process of forming through holes in the ceramic panel at intervals is additionally arranged.
Further, the through holes are round holes or honeycomb holes.
The graphene heating coating is prepared according to the preparation method of the graphene heating coating, and the heating sheet is prepared by adopting the preparation method of the heating sheet of the graphene heating coating.
The embodiment, combine shown in fig. 1, a piece generates heat, including ceramic panel 1, ceramic panel 1 interval is opened has through-hole 12, and ceramic panel 1's a terminal surface spraying has conductive coating 6, and the thick graphite alkene of 2.5um of spraying generates heat the coating and forms graphite alkene generate heat coating 7 on ceramic panel 1, graphite alkene generate heat coating 7 covers partly conductive coating 6, and partly conductive coating 6 exposes outside graphite alkene generate heat coating 7.
The ceramic panel 1 is provided with the through holes 12 at intervals, so that the heat conduction effect of the ceramic panel 1 is enhanced, the ceramic panel 1 can heat more quickly, the heating temperature is increased, and the user requirements are met.
In the embodiment, referring to fig. 2 to 5, a heating brick for a plastic uptake machine comprises a ceramic panel 1, a ceramic outer cover 2, a temperature sensor 3, a live wire 4 and a neutral wire 5.
The back both sides spraying of ceramic panel 1 has conductive coating 6, conductive coating 6 is conductive silver thick liquid, and conductive coating 6's spraying width is 6 mm.
The interval of ceramic panel 1 is opened there are through-holes 12, and the back spraying of ceramic panel 1 has the graphite alkene of one deck thickness for 2um to generate heat coating 7, graphite alkene generate heat coating 7 covers partly conductive coating 6, and partly conductive coating 6 exposes outside graphite alkene generate heat coating 7.
The inner wall of the ceramic outer cover 2 is provided with a layer of heat-insulating coating 8, and the ceramic outer cover 2 is provided with a first wire hole 21 convenient for the live wire 4 to pass through, a second wire hole 22 convenient for the zero wire 5 to pass through and a third wire hole 23 convenient for the signal output line of the temperature sensor 3 to pass through.
The utility model discloses a ceramic dustcoat 2, including ceramic panel 1, first inclined plane 24, first inclined plane 11, sealed glue 9 has been paintd between first inclined plane 24 and the second inclined plane 11, and sealed glue 9 has been paintd to joint space between ceramic panel 1 and the ceramic dustcoat 2, and the ceramic dustcoat 2 links together through sealed glue 9 between ceramic panel 1 and the ceramic panel 1, and ceramic dustcoat 2 and ceramic panel 1 enclose into pencil holding chamber 10.
Through the cooperation of first inclined plane 24 and second inclined plane 11, ceramic panel 1 arranges the lower extreme of ceramic dustcoat 2 in, has scribbled sealed glue 9 moreover between first inclined plane 24 and the second inclined plane 11, and first inclined plane 24 and the adhesion of second inclined plane 11 are in the same place to realize that ceramic dustcoat 2 and ceramic panel 1 are connected, the installation is simple, swift.
4 one end of live wire welds on a conductive coating 6, and 4 other ends of live wire pass first line hole 21 and stretch out outside ceramic dustcoat 2, 5 one end of zero line welds on another conductive coating 6, and 5 other ends of zero line pass second line hole 22 and stretch out outside ceramic dustcoat 2, the temperature measurement end of temperature sensor 3 supports and leans on graphite alkene heating coating 7, and temperature sensor 3's signal output line passes third line hole 23 and stretches out outside ceramic dustcoat 2.
Inert gas is filled into the wire harness accommodating cavity 10, and the first wire hole 21, the second wire hole 22 and the third wire hole 23 are plugged through the sealant 9, so that the lines such as the live wire 4 and the zero wire 5 are prevented from being oxidized, and the service life of the heating brick is prolonged.
The graphene is a new carbon material with a single-layer two-dimensional honeycomb lattice structure formed by tightly accumulating carbon atoms, and has excellent electric conductivity and outstanding heat conduction performance, the graphene is sprayed on a microcrystalline board in the prior art, but the microcrystalline board has the defects in the aspects of heat conductivity and heat dissipation, and cannot be in a high-temperature and high-heat state for a long time, the heating temperature cannot reach 400-plus-800 ℃, and the user requirements cannot be met, but the ceramic has the advantages of insulativity, heat conductivity, good heat accumulation performance and high temperature resistance, so that the graphene coating is sprayed on the ceramic panel 1, the processing is easy, high heat quality, high heat conductivity, high heat accumulation, high stability, long service life, the heating effect is fast, the heating brick with high heating temperature can reach 400-plus-800 ℃, and the user requirements can be met.
Claims (9)
1. A preparation method of a graphene heating coating is characterized by comprising the following steps:
the method comprises the following steps: preparing graphene, resin, an auxiliary agent, a solvent and metal neodymium powder;
step two: mixing graphene and an auxiliary agent, adjusting the power of a grinding machine to 300W, controlling the grinding machine to work for 5 hours, and grinding and dispersing;
step three: after the grinding in the second step is finished, continuously adding metal neodymium powder, controlling the grinder to work for 2 hours, and grinding and dispersing;
step four: after the grinding is finished, continuing adding resin, controlling the grinder to work for 3 hours, and grinding and dispersing;
step five: and after the grinding is finished, continuously adding the solvent, controlling the grinder to work for 1 Miss, and grinding and dispersing to form the graphene heating coating solution.
2. The preparation method of the graphene exothermic paint according to claim 1, characterized in that: the resin is epoxy resin, the auxiliary agent is a dispersing agent, and the solvent is ethanol.
3. The preparation method of the graphene exothermic paint according to claim 1, characterized in that: the formula of the graphene heating coating solution comprises the following components in percentage by weight:
graphene: 1% -5%;
resin: 5% -25%;
auxiliary agent: 1% -20%;
solvent: 75% -95%;
metal neodymium powder: 1 to 5 percent.
4. The preparation method of the graphene exothermic paint according to claim 3, characterized in that: the graphene comprises single-layer graphene or double-layer graphene, the resin comprises natural resin or synthetic resin, the auxiliary agent comprises a thickening agent or a dispersing agent or a defoaming agent, and the solvent comprises ethanol or toluene or mineral oil.
5. A preparation method of a heating sheet adopting the graphene heating coating as claimed in claim 1, is characterized by comprising the following steps:
the method comprises the following steps: preparing a conductive coating, a ceramic panel and a graphene heating coating, and spraying the conductive coating on the ceramic panel;
step two: putting the ceramic panel sprayed with the conductive coating in the first step into an oven, adjusting the temperature of the oven to 120 ℃, curing for 1 hour and 30 minutes, taking out after curing, and standing and cooling at normal temperature;
step three: spraying the graphene heating coating on the ceramic panel, wherein the graphene heating coating covers a part of conductive silver paste, and a part of conductive silver paste is exposed out of the graphene heating coating;
step four: putting the ceramic panel sprayed with the conductive coating and the graphene heating coating in the third step into an oven, adjusting the temperature of the oven to 800 ℃, curing for 3 hours, taking out after curing, and standing and cooling at normal temperature to form a heating sheet;
step five: and D, conducting power-on test on the heating sheet obtained in the step four for 30 minutes, and testing whether the performance of the heating sheet meets a preset value.
6. The heat generating sheet according to claim 5, characterized in that: the conductive coating is conductive silver paste, the conductive coating is sprayed on two sides of the end face of the ceramic panel, and the spraying width of the conductive coating is 6 mm.
7. The heat generating sheet according to claim 5, characterized in that: the thickness of the graphene heating coating is 1-10 um.
8. The method of manufacturing a heat generating sheet according to claim 5, characterized in that: in the first step, a process of forming through holes in the ceramic panel at intervals is added.
9. The method of manufacturing a heat generating sheet according to claim 8, characterized in that: the through holes are round holes or honeycomb holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011449120.1A CN112552792A (en) | 2020-12-09 | 2020-12-09 | Preparation method of graphene heating coating and preparation method of heating sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011449120.1A CN112552792A (en) | 2020-12-09 | 2020-12-09 | Preparation method of graphene heating coating and preparation method of heating sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112552792A true CN112552792A (en) | 2021-03-26 |
Family
ID=75061596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011449120.1A Pending CN112552792A (en) | 2020-12-09 | 2020-12-09 | Preparation method of graphene heating coating and preparation method of heating sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112552792A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202014381U (en) * | 2011-03-17 | 2011-10-19 | 武汉恒升电子有限公司 | Multi-hole ceramic heating element |
| CN108384387A (en) * | 2018-03-12 | 2018-08-10 | 合肥同佑电子科技有限公司 | A kind of high-temperature resistant coating and preparation method thereof for solar energy equipment |
| CN108659673A (en) * | 2018-05-16 | 2018-10-16 | 中南大学 | A kind of graphene modified waterborne epoxy coated reinforcement and preparation method thereof |
| CN111303763A (en) * | 2020-03-16 | 2020-06-19 | 顾广新 | High-temperature-resistant high-power-density graphene heating coating and preparation method thereof |
-
2020
- 2020-12-09 CN CN202011449120.1A patent/CN112552792A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202014381U (en) * | 2011-03-17 | 2011-10-19 | 武汉恒升电子有限公司 | Multi-hole ceramic heating element |
| CN108384387A (en) * | 2018-03-12 | 2018-08-10 | 合肥同佑电子科技有限公司 | A kind of high-temperature resistant coating and preparation method thereof for solar energy equipment |
| CN108659673A (en) * | 2018-05-16 | 2018-10-16 | 中南大学 | A kind of graphene modified waterborne epoxy coated reinforcement and preparation method thereof |
| CN111303763A (en) * | 2020-03-16 | 2020-06-19 | 顾广新 | High-temperature-resistant high-power-density graphene heating coating and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106847767A (en) | A kind of graphite Copper Foil heat sink compound | |
| JP4874244B2 (en) | PTC thick film electric circuit controlled electric heating element | |
| CN107592685B (en) | A method of preparing double heating layer graphene Electric radiant Heating Films | |
| US20190007998A1 (en) | Rare-Earth Doped Semiconductor Infrared Radiation Thick-Film Electronic Paste and Preparation Method Therefor | |
| JP2008508664A5 (en) | ||
| CN105483641A (en) | Preparing method of copper-base electric contact material enhanced by in-situ grown graphene | |
| CN108172859A (en) | A kind of bipolar plates used for high-temperature fuel cell and its manufacturing method | |
| CN101415295A (en) | Graphite-based novel electronic circuit board and preparation technique thereof | |
| CN112552792A (en) | Preparation method of graphene heating coating and preparation method of heating sheet | |
| CN202135441U (en) | Composite radiating fin | |
| CN102255215B (en) | Manufacturing process of carbon commutator | |
| KR100703029B1 (en) | Heating Unit with Good Resistance Properties | |
| CN209748885U (en) | High-oxidation-resistance copper substrate | |
| CN209283574U (en) | A kind of digital electricity generating buckle-type ceramic copper-clad base plate | |
| CN115460726A (en) | Composite ceramic heating element and preparation method thereof | |
| CN205789349U (en) | A kind of high-power NTC themistor | |
| CN113816733A (en) | Formula of electrothermal ceramic material, preparation method of electrothermal ceramic blank and heating element | |
| CN113816730A (en) | Formula of electrothermal ceramic material, preparation method of electrothermal ceramic blank and heating element | |
| CN215773703U (en) | Multilayer ceramic substrate with high-efficiency heat-conducting property | |
| TWI556953B (en) | A metal-based sheet composite graphite sheet | |
| CN205987422U (en) | Warm up with graphite alkene electric plate | |
| CN213564811U (en) | Heat conduction silica gel sheet with aluminium foil composite construction | |
| CN104244666A (en) | Novel insulating graphite | |
| CN202133320U (en) | High heat radiation composite structure provided with clamping body | |
| CN213186957U (en) | Ceramic laminated board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210326 |