CN111303763A - High-temperature-resistant high-power-density graphene heating coating and preparation method thereof - Google Patents
High-temperature-resistant high-power-density graphene heating coating and preparation method thereof Download PDFInfo
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Abstract
The invention provides a high-temperature-resistant high-power-density graphene heating coating and a preparation method thereof, belonging to the field of coatings. The liquid coating of the high-temperature-resistant high-power-density graphene heating coating comprises the following components in parts by weight: 15-30 parts of conductive graphene, 6-14 parts of conductive metal powder, 30-50 parts of film-forming resin, 2-7 parts of dispersing agent, 15-25 parts of solvent and 1-4 parts of auxiliary agent. The invention utilizes the high-efficiency electric-heat conversion efficiency of the graphene to produce heat, optimizes the matching of the conductive metal powder and the volume concentration of the conductive metal powder in the coating, adjusts the resistance of the coating and improves the power density. Meanwhile, the coating has good adhesive force, high hardness, high temperature resistance, temperature change resistance, humidity resistance, boiling resistance and mildew resistance after being cured, so that heat can be generated efficiently, quickly and safely.
Description
Technical Field
The invention relates to a high-temperature-resistant high-power-density graphene heating coating and a preparation method thereof, belonging to the field of coatings.
Background
The traditional metal resistance wire heating mode has the defects of heavy weight, poor corrosion resistance, serious pollution in smelting and processing processes, easy formation of metal ion pollution due to direct contact with metal under certain conditions, low electric heat conversion utilization efficiency, release of toxic gas caused by substances such as binders due to overhigh heating temperature and the like, and is not suitable for being continuously developed in the life production of electric heating devices.
The graphene is used as a two-dimensional nano material, and after voltage is applied, free electrons in the graphene move directionally under the action of an electric field and collide with carbon atoms, so that electric energy obtained from the electric field is converted into heat energy. The collision caused by the directional movement of electrons is a heating mode, so that the heat is similar to metal heating, and the electrothermal conversion efficiency equal to that of a metal resistance wire can be provided. The electric heating material is used in the field of electric heating, has the characteristics of ultrathin portability, high voltage resistance, high toughness, high electric conduction and heat conduction speed and the like, can well solve the problems of slow heating, high power consumption and the like, and is a perfect new material for replacing the traditional electric heating equipment.
Graphene can be used as a heating material, because the C atoms in the graphene are subjected to sp2 hybridization, and one 2p electron is not hybridized to form a free electron, so that the whole graphene forms a large pi bond, and the electron can freely move in the plane of the graphene, and the theoretical conductivity of the graphene is very good. However, in the graphene prepared by using a chemical method, a large number of defects located at the edge or in the middle are generated in the oxidation-reduction process, and the movement of electrons is hindered to a certain degree, so that the resistivity of the prepared graphene material is far greater than that of a lead, and the graphene material becomes a load in the whole circuit. Therefore, in order to solve the negative effects of overlarge resistance caused by graphene defects and poor conductivity of coating resin, the invention adjusts the resistivity of the coating by adding conductive metal powder which is low in resistivity, good in conductivity and easy to disperse, and achieves the purpose of optimizing the heating power density.
Chinese patent CN201910527577.0 discloses a graphene heat-generating dehumidifying apparatus for dehumidifying an electrical equipment-mounting cabinet, and details of the structure, mounting, and functions of the apparatus are described as a specific example using graphene as a heat-generating unit. However, the source of the graphene heating sheet and the specific heating mechanism thereof are not described in detail, and in the heating process, the temperature required for dehumidification is not high, the heating efficiency is low, and the adhesive in the groove may volatilize toxic gas, which causes danger to subsequent overhaul work.
Chinese patent CN201910460269.0 discloses a method for preparing graphene film by evaporation self-assembly using aluminum foil as growth substrate, and using aluminum silicate film and temperature controller to improve the heat preservation and energy saving performance of mask. However, the evaporation self-assembly film preparation method may cause the problems of uneven and incomplete film thickness, excessive resistance and uneven resistance, and thus, the phenomena of uneven heating, low overall power density and the like in the actual use process may occur.
Chinese patent CN201510253099.0 discloses a graphene heat dissipation coating, a preparation method and application thereof, wherein the graphene heat dissipation coating has a thermal conductivity coefficient of 5000W/m.K, is extremely high in thermal conductivity, and has good heat conduction and heat dissipation performance in the horizontal direction. The one-dimensional carbon nanomaterial and the heat conducting metal are filled to enhance the longitudinal heat conduction of the graphene, so that a heat source can be rapidly diffused to graphene through a heat conducting network chain, the graphene on the surface rapidly dissipates heat in the form of convection and infrared radiation, the effect of greatly reducing the temperature of the heat source is finally achieved, and the problem of difficulty in heat dissipation of an electronic product is solved.
Disclosure of Invention
Because the defects exist in the prior art and the traditional resistance wire heating mode is changed, the graphene heating coating provided by the invention is formed by coating, constructing, drying and curing liquid coating. The high-efficiency electric-heat conversion efficiency of graphene is utilized to generate heat, the coating resistance is adjusted by optimizing the matching of conductive metal powder and the volume concentration of the conductive metal powder in the coating, the power density is improved, and the coating formula is adjusted by using modified silicon resin or organic silicon ceramic resin to form a film, so that the prepared coating has good mechanical properties such as adhesive force, hardness and the like, and has excellent high-temperature resistance, temperature change resistance, humidity and heat resistance, boiling resistance, mold resistance and the like. Finally, high-efficiency, quick and safe heat production is realized.
Specifically, the technical scheme of the invention is as follows:
the high-temperature-resistant high-power-density graphene heating coating is characterized in that a liquid coating comprises the following components in parts by weight: 15-30 parts of conductive graphene, 6-14 parts of conductive metal powder, 30-50 parts of film forming resin, 2-7 parts of dispersing agent, 15-25 parts of solvent and 1-4 parts of auxiliary agent.
Preferably, the conductive graphene is a lamellar graphene powder with a diameter of 5-20 μm and a bulk density of 0.02-0.08 g/mL.
Preferably, the conductive metal powder is any one or more of silver powder, aluminum powder, copper powder or iron powder.
More preferably, the conductive metal powder is any one or more of flake silver powder, ultrafine silver powder, silver-plated hollow microspheres and silver-copper powder.
Preferably, the film-forming resin is a modified silicone resin or a silicone ceramic resin.
Preferably, the modified silicone resin is any one or more of epoxy modified silicone resin, tetraethoxysilane modified composite hybrid silicone resin and titanium-containing hybrid silicone resin.
Preferably, the organic silicon ceramic resin is any one or more of polysiloxane ceramic resin and organic-inorganic composite ceramic resin modified by silica sol.
Preferably, the dispersing agent is a block high molecular copolymer synthesized by block copolymerization of a hydrophilic compound and an oleophilic compound.
More preferably, the dispersant is a high molecular polymer synthesized by block copolymerization of long-chain polycarboxylic acid or long-chain polyamide.
Preferably, the solvent is any one or more of water, ethanol, isooctanol, propylene glycol methyl ether, ethylene glycol monobutyl ether, ethylene glycol isooctyl ether, propylene glycol methyl ether acetate, propylene glycol diacetate, ethylene glycol butyl ether, ethylene glycol methyl ether acetate or ethylene glycol diacetate.
Preferably, the auxiliary agent is selected from any one or more of a wetting agent, a leveling agent, an antifoaming agent, a thickening agent, an adhesion promoter, a silane coupling agent, a combustion improver and an anti-settling agent.
More preferably, the auxiliary agent is selected from any one or more of BYK346, BYK022, BYK088, BYK333, BYK381, BYK2008, BYK346, BYK410, TEGO Wet 270, TEGO Glideb1484, TEGO Airex 900, TEGO Airex 9620, Mitigosil MP200, Mitigest A-1120, Mitig CoatOSil 1770, Mitig SFR 100, and Mitig chemical AEIL 200.
The preparation method of the high-temperature-resistant high-power-density graphene heating coating comprises the following steps:
s1, adding a solvent and a dispersing agent into the container A, uniformly stirring, adding conductive graphene, and dispersing until the system is uniform to obtain slurry;
s2, adding the film-forming resin and the solvent into the container B, stirring uniformly, adding the auxiliary agent, and dispersing until the system is uniform to obtain a base material;
s3, adding the slurry into the base material under the condition of stirring, dispersing until the system is uniform, adding conductive metal powder, and dispersing again until the system is uniform to obtain the liquid coating of the graphene heating coating;
s4, coating the liquid coating of the graphene heating coating on a target base material (such as glass, ceramic tiles, metal and the like) by means of spraying or brushing, curing at normal temperature or baking for accelerated curing, and forming the high-temperature-resistant high-power-density graphene heating coating after curing. The coating thickness can be controlled to be 30-50 microns.
The invention has the advantages that:
1. the electric heat conversion efficiency property of the graphene with higher power can be achieved at low voltage, the graphene can be used for coating heat production, and the energy utilization rate is improved.
2. By optimizing the matching of the conductive metal powder and the volume concentration of the conductive metal powder in the coating and adjusting the resistance of the coating, the negative effects of heat generation, such as structural defects of graphene produced in industry, untight contact of graphene sheets in a heating coating and the like, are solved, and the power density is improved.
3. The block-type polymer dispersant used can effectively prevent the graphene in the liquid coating from reflocculating through the affinity group and steric hindrance effect.
4. The used modified silicon resin or organic-inorganic composite ceramic resin is formed into a film, so that the film has excellent heat resistance, temperature change resistance, humidity and heat resistance, boiling resistance and the like.
5. Through formula optimization, the powder has good dispersibility and excellent mechanical properties such as coating adhesion and the like.
6. The graphene heating coating is formed by coating and curing a liquid coating, and has the advantages of quick preparation, convenience in construction, easiness in control of heating positions and the like.
7. The graphene heating coating can be in zero contact with a heated object, so that the heat conduction path is reduced, and the heating efficiency is improved.
8. Compared with the traditional resistance wire heating, the heating mode of the graphene heating coating is surface heating, the heat is distributed uniformly, and the heating efficiency is improved.
9. Compared with the traditional resistance wire heating, the graphene heating coating is not easy to oxidize, excellent in coating performance and longer in service life.
10. The graphene heating coating can be directly coated on materials such as glass and ceramics to form a heating coating, so that secondary pollution caused by the use of metal materials is avoided.
Therefore, the invention has the performances of high temperature resistance, high power density, high efficiency, rapidness and safe heat generation.
Drawings
Fig. 1 is a graphene exothermic coating-substrate of high boron glass according to example 1 of the present invention;
fig. 2 is a graphene heating coating-based material of a nylon fiberboard in example 2 of the present invention;
fig. 3 is a graphene heating coating-ceramic tile in example 3 of the present invention;
fig. 4 is a thermal weight loss curve of the graphene heating coating in the embodiment of the invention.
Detailed Description
The present invention will be further described with reference to specific embodiments in order to make the original features, technical means and objectives of the invention easier to understand. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
Example 1
A liquid coating of a high-temperature-resistant high-power-density graphene heating coating is prepared from the components in the table 1.
TABLE 1 specific ingredients and amounts used in example 1
| Serial number | Raw material | Parts by weight | Remarks for note | Manufacturer of the |
| 1 | |
25 | Conductive graphene powder | Xianfeng nanometer |
| 2 | DUKE-M18 | 12 | Conductive silver-plated hollow microsphere | Duke of America |
| 3 | SH-022-4 | 38 | Epoxy modified silicone resin | Chemical engineering of the new four seas in Hubei province |
| 4 | BYK 2020 | 5 | Dispersing agent | Chemistry of |
| 5 | Propylene glycol methyl ether acetate | 18 | Solvent(s) | Chinese medicine reagent |
| 6 | BYK 346 | 0.6 | Substrate wetting agent | Chemistry of Pico |
| 7 | BYK 333 | 0.6 | Leveling agent | Chemistry of Pico |
| 8 | BYK 088 | 0.4 | Defoaming agent | Chemistry of Pico |
| 9 | BYK 420 | 0.4 | Thickening agent | Chemistry of Pico |
The preparation of the high-temperature-resistant high-power-density graphene heating coating in the embodiment comprises the following steps:
s1, adding 9 parts (by weight, the same below) of propylene glycol monomethyl ether acetate as a solvent and 5 parts of a dispersant BYK2020 into an auxiliary cylinder, stirring at a low speed of 300r/min for 5min, uniformly mixing, adding 25 parts of conductive graphene XF001H, and dispersing at a low speed of 600r/min for 5min until the system is uniform to obtain slurry;
s2, adding 38 parts of epoxy modified silicon resin SH-022-4 and 9 parts of propylene glycol methyl ether acetate as a solvent into a main cylinder according to mass fraction, stirring at a low speed of 300r/min for 5min, uniformly mixing, and slowly adding 0.6 part of a base material wetting agent BYK346, 0.4 part of a defoaming agent BYK088, 0.6 part of a leveling agent BYK333 and 0.4 part of a thickening agent BYK 420 in sequence, and dispersing at a low speed of 600r/min for 10min until the system is uniform to obtain a base material;
s3, adding the slurry in the auxiliary cylinder into the base material under the stirring state of low speed 600r/min, dispersing for 10min until the system is uniform, then adding 12 parts of conductive silver-plated hollow microspheres, and dispersing for 10min at low speed 300r/min until the system is uniform, thus obtaining the liquid coating of the graphene heating coating;
s4, spraying the prepared coating onto a glass substrate in an air spraying mode, leveling for 5 minutes, baking for 20 minutes at 120 ℃ to finish curing, and obtaining the high-temperature-resistant high-power-density graphene heating coating (shown in figure 1) after curing, wherein the thickness of the coating is controlled to be 40 +/-5 microns.
Example 2
A liquid coating of a high-temperature-resistant high-power-density graphene heating coating is prepared from the components in Table 2.
TABLE 2 specific ingredients and amounts used in example 2
| Serial number | Raw material | Parts by weight | Remarks for note | Manufacturer of the |
| 1 | XF001H | 21 | Conductive graphene powder | Xianfeng nanometer |
| 2 | LXJ2225 | 14 | Flake silver powder | Shenzhen Lixinjia medicine |
| 3 | SH-022-4 | 38 | Epoxy modified silicone resin | Chemical engineering of the new four seas in Hubei province |
| 4 | BYK 2020 | 7 | Dispersing agent | Chemistry of |
| 5 | Propylene glycol methyl ether acetate | 18 | Solvent(s) | Chinese medicine reagent |
| 6 | BYK 346 | 0.6 | Substrate wetting agent | Chemistry of Pico |
| 7 | BYK 333 | 0.6 | Leveling agent | Chemistry of Pico |
| 8 | BYK 088 | 0.4 | Defoaming agent | Chemistry of Pico |
| 9 | BYK 420 | 0.4 | Thickening agent | Chemistry of Pico |
The preparation of the high-temperature-resistant high-power-density graphene heating coating in the embodiment comprises the following steps:
s1, adding 9 parts (by weight, the same below) of propylene glycol monomethyl ether acetate as a solvent and 7 parts of a dispersant BYK2020 into an auxiliary cylinder, stirring at a low speed of 300r/min for 5min, uniformly mixing, then adding 21 parts of conductive graphene XF001H, and dispersing at a low speed of 600r/min for 5min until the system is uniform to obtain slurry;
s2, adding 38 parts of epoxy modified silicon resin SH-022-4 and 9 parts of propylene glycol methyl ether acetate as a solvent into a main cylinder according to mass fraction, stirring at a low speed of 300r/min for 5min, uniformly mixing, and slowly adding 0.6 part of a base material wetting agent BYK346, 0.4 part of a defoaming agent BYK088, 0.6 part of a leveling agent BYK333 and 0.4 part of a thickening agent BYK 420 in sequence, and dispersing at a low speed of 600r/min for 10min until the system is uniform to obtain a base material;
s3, adding the slurry part in the auxiliary cylinder into the base material under the stirring state of low speed 600r/min, dispersing for 10min until the system is uniform, then adding 14 parts of LXJ2225 superfine silver powder, and dispersing for 10min at low speed 300r/min until the system is uniform, thus obtaining the liquid coating of the graphene heating coating;
s4, spraying the prepared coating to a nylon fiberboard in an air spraying mode, and finishing curing at normal temperature for 12 hours to obtain the high-temperature-resistant high-power-density graphene heating coating (as shown in figure 2), wherein the thickness of the coating is controlled to be 40 +/-5 microns.
Example 3
A liquid coating of a high-temperature-resistant high-power-density graphene heating coating is prepared from the components in Table 3.
TABLE 3 specific ingredients and amounts used in example 3
The preparation of the high-temperature-resistant high-power-density graphene heating coating in the embodiment comprises the following steps:
s1, adding 13 parts (by weight, the same below) of water and 5 parts of propylene glycol methyl ether acetate as a solvent into an auxiliary cylinder, stirring at a low speed of 300r/min, adding 5 parts of dispersant BYK2020, stirring at a low speed of 300r/min for 5min, uniformly mixing, then adding 25 parts of conductive graphene GRF-HG, and dispersing at a low speed of 600r/min for 5min until the system is uniform, thereby obtaining slurry;
s2, adding 38 parts of polysiloxane ceramic resin YCL-C-23 and 0.4 part of AEROSIL200 into a main cylinder, stirring at a low speed of 600r/min for 10min, uniformly mixing, slowly adding 1.2 parts of a substrate wetting agent BYK346, 0.4 part of an antifoaming agent BYK088 and at a low speed of 600r/min, and dispersing for 10min until the system is uniform, thereby obtaining a base material;
s3, adding the slurry part in the auxiliary cylinder into the base material under the stirring state of 600r/min, stirring for 6h, completing the curing process, then adding 12 parts of copper-silver powder LXJ2205, and dispersing at a low speed of 300r/min for 10min until the system is uniform, thus obtaining the liquid coating of the graphene heating coating;
s4, spraying the prepared coating onto the ceramic tile in an air spraying mode, and finishing curing at normal temperature for 12 hours to obtain the high-temperature-resistant high-power-density graphene heating coating (as shown in figure 3), wherein the thickness of the coating is controlled to be 40 +/-5 microns.
Test example 1 coating Properties
The graphene heating coatings formed in the embodiments 1 to 3 are subjected to performance tests, and the test results show that the graphene heating coatings prepared in the 3 embodiments have excellent performance. The results and methods of each test are shown in table 4.
Table 4 graphene heating coating performance detection
Test example 2 surface resistance
The graphene heating coating prepared in the embodiment is subjected to a surface resistance meter, a four-probe testing method and a multi-point parallel test, the surface resistance average value is calculated, and the conventional formula, power and the like are passedVoltage squared divided by resistance (P ═ U)2/R), it is understood that the lower the resistance, the higher the watt density.
Example 1 sheet resistance averages: 6.56*10-4Ω cm, example 2 surface resistance averages: 2.23*10-3Ω cm, example 3 surface resistance averages: 8.03*10-3Omega cm, it shows that the graphene heating coating prepared by 3 examples can reach high power density.
Test example 3 Heat resistance
The high-temperature-resistant thermal loss analysis curve of the graphene heating coating prepared in the example is tested by TGA, and the test method comprises the following steps: the temperature is raised to 600 ℃ in about 30min at the temperature raising rate of 20 ℃/min, then the temperature is kept for 30min, and the temperature and the quality change are monitored in real time in the process.
The results of the tests are shown in figure 4,
as shown in fig. 4, the initial thermal weight loss of example 1 is less than 1.5%, the initial thermal weight loss of example 2 is less than 2.2%, and the initial thermal weight loss of example 3 is less than 1.9%, and the thermal weight loss of the coating layer is not substantially changed at about 600 ℃. Therefore, the graphene heating coatings prepared in the 3 embodiments have good high temperature resistance.
Claims (10)
1. The high-temperature-resistant high-power-density graphene heating coating is characterized in that a liquid coating comprises the following components in parts by weight: 15-30 parts of conductive graphene, 6-14 parts of conductive metal powder, 30-50 parts of film-forming resin, 2-7 parts of dispersing agent, 15-25 parts of solvent and 1-4 parts of auxiliary agent.
2. The high-temperature-resistant high-power-density graphene exothermic coating according to claim 1, wherein the conductive graphene is a lamellar graphene powder with a diameter of 5 μm to 20 μm and a bulk density of 0.02g/mL to 0.08 g/mL.
3. The high-temperature-resistant high-power-density graphene heating coating according to claim 1, wherein the conductive metal powder is any one or more of silver powder, aluminum powder, copper powder or iron powder.
4. The high-temperature-resistant high-power-density graphene heating coating according to claim 1, wherein the conductive metal powder is any one or more of flake silver powder, superfine silver powder, silver-plated hollow microspheres and silver-copper powder.
5. The high-temperature-resistant high-power-density graphene heating coating according to claim 1, wherein the film-forming resin is modified silicone resin or organic silicon ceramic resin,
wherein the modified silicon resin is any one or more of epoxy modified organic silicon resin, tetraethoxysilane modified composite hybrid silicon resin and titanium-containing hybrid silicon resin;
the organic silicon ceramic resin is any one or more of polysiloxane ceramic resin and organic-inorganic composite ceramic resin modified by silica sol.
6. The high-temperature-resistant high-power-density graphene exothermic coating according to claim 1, wherein the dispersing agent is a block high molecular copolymer synthesized by block copolymerization of a hydrophilic compound and an oleophilic compound.
7. The high-temperature-resistant high-power-density graphene exothermic coating according to claim 1, wherein the solvent is any one or more of water, ethanol, isooctanol, propylene glycol methyl ether, ethylene glycol monobutyl ether, ethylene glycol isooctyl ether, propylene glycol methyl ether acetate, propylene glycol diacetate, ethylene glycol butyl ether, ethylene glycol methyl ether acetate or ethylene glycol diacetate.
8. The high-temperature-resistant high-power-density graphene exothermic coating according to claim 1, wherein the auxiliary agent is selected from any one or more of a wetting agent, a leveling agent, a defoaming agent, a thickening agent, an adhesion promoter, a silane coupling agent, a flame retardant and an anti-settling agent.
9. The high temperature resistant high power density graphene exothermic coating according to claim 1, wherein the auxiliary agent is selected from any one or more of BYK346, BYK022, BYK088, BYK333, BYK381, BYK2008, BYK346, BYK410, TEGO Wet 270, TEGO Glideb1484, TEGO Airex 900, TEGO Airex 9620, Mitig Coatosil MP200, Mitig Silquest A-1120, Mitig CoatOSil 1770, Mitig SFR 100, and Yingchu chemical AEROSIL 200.
10. The preparation method of the high-temperature-resistant high-power-density graphene heat-generating coating layer according to any one of claims 1 to 9, characterized by comprising the following steps:
s1, adding a solvent and a dispersing agent into the container A, uniformly stirring, adding conductive graphene, and dispersing until the system is uniform to obtain slurry;
s2, adding the film-forming resin and the solvent into the container B, stirring uniformly, adding the auxiliary agent, and dispersing until the system is uniform to obtain a base material;
s3, adding the slurry into the base material under the condition of stirring, dispersing until the system is uniform, adding conductive metal powder, and dispersing again until the system is uniform to obtain the liquid coating of the graphene heating coating;
s4, coating the liquid coating of the graphene heating coating on a target base material in a spraying or brushing mode, curing at normal temperature or baking for accelerated curing, and curing to form the high-temperature-resistant high-power-density graphene heating coating.
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Cited By (9)
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| CN111671163A (en) * | 2020-07-13 | 2020-09-18 | 诸暨初升新材料科技有限公司 | Preparation method of graphene heat-conducting ceramic heating body of electronic cigarette atomizer |
| CN111808463A (en) * | 2020-07-29 | 2020-10-23 | 深圳市寒暑科技新能源有限公司 | High-temperature electric heating coating and preparation method thereof |
| CN111944419A (en) * | 2020-07-20 | 2020-11-17 | 广州精卓化工有限公司 | Low-temperature cured electrically-induced thermal conductive slurry and preparation method thereof |
| CN112552792A (en) * | 2020-12-09 | 2021-03-26 | 何祥林 | Preparation method of graphene heating coating and preparation method of heating sheet |
| CN113088070A (en) * | 2021-05-24 | 2021-07-09 | 上海沥高科技股份有限公司 | Vacuum bag film with heating function and preparation method and application thereof |
| CN113234392A (en) * | 2021-05-06 | 2021-08-10 | 北京旭碳新材料科技有限公司 | High-temperature graphene conductive coating composition, high-temperature graphene conductive coating, preparation method of high-temperature graphene conductive coating, and graphene heating pipe |
| CN113604100A (en) * | 2021-07-30 | 2021-11-05 | 雷索新材料(苏州)有限公司 | Graphene/copper/micron particle composite material, preparation method thereof, graphene high-temperature heating ink and application |
| CN114605912A (en) * | 2022-03-11 | 2022-06-10 | 珠海万烯科技有限公司 | Graphene-containing heating slurry, heating coating, and preparation method and application thereof |
| CN116676000A (en) * | 2023-06-09 | 2023-09-01 | 安徽宇航派蒙健康科技股份有限公司 | Heat dissipation coating, preparation method thereof and heating device |
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| CN111671163A (en) * | 2020-07-13 | 2020-09-18 | 诸暨初升新材料科技有限公司 | Preparation method of graphene heat-conducting ceramic heating body of electronic cigarette atomizer |
| CN111944419A (en) * | 2020-07-20 | 2020-11-17 | 广州精卓化工有限公司 | Low-temperature cured electrically-induced thermal conductive slurry and preparation method thereof |
| CN111808463A (en) * | 2020-07-29 | 2020-10-23 | 深圳市寒暑科技新能源有限公司 | High-temperature electric heating coating and preparation method thereof |
| CN112552792A (en) * | 2020-12-09 | 2021-03-26 | 何祥林 | Preparation method of graphene heating coating and preparation method of heating sheet |
| CN113234392A (en) * | 2021-05-06 | 2021-08-10 | 北京旭碳新材料科技有限公司 | High-temperature graphene conductive coating composition, high-temperature graphene conductive coating, preparation method of high-temperature graphene conductive coating, and graphene heating pipe |
| CN113088070A (en) * | 2021-05-24 | 2021-07-09 | 上海沥高科技股份有限公司 | Vacuum bag film with heating function and preparation method and application thereof |
| CN113604100A (en) * | 2021-07-30 | 2021-11-05 | 雷索新材料(苏州)有限公司 | Graphene/copper/micron particle composite material, preparation method thereof, graphene high-temperature heating ink and application |
| CN114605912A (en) * | 2022-03-11 | 2022-06-10 | 珠海万烯科技有限公司 | Graphene-containing heating slurry, heating coating, and preparation method and application thereof |
| CN116676000A (en) * | 2023-06-09 | 2023-09-01 | 安徽宇航派蒙健康科技股份有限公司 | Heat dissipation coating, preparation method thereof and heating device |
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