CN110944416A - Graphene composite slurry, heating coating and preparation method thereof - Google Patents

Graphene composite slurry, heating coating and preparation method thereof Download PDF

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CN110944416A
CN110944416A CN201911037379.2A CN201911037379A CN110944416A CN 110944416 A CN110944416 A CN 110944416A CN 201911037379 A CN201911037379 A CN 201911037379A CN 110944416 A CN110944416 A CN 110944416A
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graphene
graphene composite
coating
powder
composite slurry
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甘鹏飞
李高升
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Zhuhai Enqiu Technology Co Ltd
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/20Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18Fireproof paints including high temperature resistant paints
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/24Electrically-conducting paints
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]

Abstract

The invention relates to graphene composite slurry, a heating coating and a preparation method thereof, and belongs to the technical field of electric heating. The weight percentage of the surface dispersant in the graphene composite slurry is 1-5%; the weight percentage of the carrier adhesive in the graphene composite slurry is 10-80%; the graphene dispersion liquid accounts for 3-15% of the graphene composite slurry by weight; the weight percentage of the base material in the graphene composite slurry is 16-70%. The heating temperature of the graphene far infrared heating technology is improved through the improvement of the raw material formula and the improvement of the processing technology.

Description

Graphene composite slurry, heating coating and preparation method thereof
Technical Field
The invention relates to graphene composite slurry, a heating coating and a preparation method thereof, and belongs to the technical field of electric heating.
Background
Since the discovery in 2004, graphene has attracted researchers in various fields around the world. A series of characteristics such as excellent electrical conductivity, thermal conductivity, light transmittance, flexibility and super-strong hardness attract a large number of scholars and experts in the fields of academia, business industry and the like to invest in the development and application research of graphene. With the development of graphene preparation technology, the problem of limiting the cost of graphene application is not severe at present, the large-scale production capacity of graphene is improved, and the cost is also reduced linearly. The industrial application of graphene is also becoming more and more popular. After the graphene film is electrified, carbon molecular groups are mutually rubbed and collided due to Brownian motion, so that the carbon molecular groups are uniformly radiated outwards in a far infrared ray form with the wavelength of 6-14 microns. The far infrared rays in this wavelength range are called as a life light wave, and are absorbed by water molecules in the human body, thereby generating heat by resonance. At present, the technology has been widely developed to produce heating films with original function and physiotherapy health care function in various application directions.
There are three ways of heat transfer: heat exchange, heat conduction, and heat radiation. It goes without saying that the heating efficiency of the heat radiation is superior to the first two ways. Due to excellent electric conduction and optical performance, the graphene is a good conductor of electricity and heat, can play a role in electric conduction when applied to a heating film, and generates far infrared heat radiation after being electrified; on the other hand, the graphene does not have heat loss caused by heat conduction after the heating film is electrified, energy is directly transferred to the to-be-heated body through heat radiation, molecular level resonance heating is directly carried out on the to-be-heated body, heating is quicker, and the problem of temperature imbalance does not exist. However, the graphene heating film products disclosed in the current domestic and foreign markets are positioned at the graphene low-temperature far-infrared heating level (the temperature is generally lower than 200 ℃), have no full play to the graphene electric heating performance, are limited by the research and development of the graphene body quality and the advanced graphene slurry technology, and cannot develop the application of the graphene high-temperature far-infrared level.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides graphene composite slurry, a heating coating and a preparation method thereof. The invention improves the heating temperature of the ink alkene far infrared heating technology through the improvement of the raw material formula and the improvement of the processing technology.
The technical scheme of the invention is as follows: the graphene composite slurry comprises a base material, a surface dispersant, a carrier adhesive and a graphene dispersion liquid, and is characterized in that: the weight percentage of the surface dispersant in the graphene composite slurry is 1-5%; the weight percentage of the carrier adhesive in the graphene composite slurry is 10-80%; the graphene dispersion liquid accounts for 3-15% of the graphene composite slurry by weight; the weight percentage of the base material in the graphene composite slurry is 16-70%, the base material comprises 40-80% of micro silicon powder, 5-20% of nano silicon dioxide, 5-10% of nano titanium dioxide, 5-15% of silicate and 5-10% of quartz powder.
The graphene composite slurry is characterized in that: the formula of the base material in the graphene slurry is as follows:
Figure BDA0002251895690000031
the graphene slurry formula is as follows:
Figure BDA0002251895690000032
the graphene composite slurry is characterized in that: the graphene dispersion liquid is a graphene powder dispersion liquid produced by mesomorphic graphene and (wuhan) graphene science and technology limited.
The invention also discloses a graphene composite slurry heating coating, which comprises a base material and the graphene slurry coating, and is characterized in that: the graphene slurry coating is graphene composite slurry, the graphene composite slurry is the graphene composite slurry according to any one of claims 1 to 3, and the substrate is made of metal, ceramic, glass or microcrystalline glass.
According to graphite alkene composite paste generate heat coating as above, its characterized in that: the graphene coating is characterized by also comprising a high-temperature silver paste counter electrode, and the high-temperature silver paste counter electrode is electrified with the graphene coating.
According to graphite alkene composite paste generate heat coating as above, its characterized in that: the silver paste of the high-temperature silver paste counter electrode comprises, by weight, 83% -90% of silver powder, 8% -12% of thermoplastic polyimide resin and 2% -5% of nitrile-group-containing rubber, wherein the nitrile group content of the nitrile-group-containing rubber accounts for more than 50% of the weight of the nitrile-group-containing rubber, and the balance is rubber components, wherein the silver powder comprises nano-scale silver powder and granular silver powder, the nano-scale silver powder accounts for 25% -40% of the weight of the silver powder, the grain size of the nano-scale silver powder is 5nm-8nm, the granular silver powder accounts for 60% -75% of the weight of the silver powder, and the grain size of the granular silver.
The invention also discloses a preparation method based on the graphene composite slurry, which is characterized by comprising the following steps: the method comprises the following steps:
mixing, ball-milling, screening, sintering, crushing and grinding 40-80% of micro silicon powder, 5-20% of nano silicon dioxide, 5-10% of nano titanium dioxide, 5-15% of silicate and 5-10% of quartz powder according to weight percentage to obtain base material powder;
after screening the base material powder, heating the screened base material powder to 500-1500 ℃, preserving the heat for 0.1-6 hours, annealing and cooling to room temperature to obtain a crystal sample;
crushing the crystal sample and then ball-milling the crystal sample into powder, namely the base material of the graphene composite slurry;
1-5% of surface dispersant by weight percentage; 10% -80% of carrier adhesive; 3% -15% of graphene dispersion liquid; and uniformly mixing 16-70% of base material to obtain the graphene composite slurry.
The preparation method based on the graphene composite slurry is characterized by comprising the following steps: heating the screened base material powder to 800-1200 ℃, and preserving heat for 1-2 hours.
The invention also disclosesA preparation method of a graphene composite slurry heating coating is characterized by comprising the following steps: coating the graphene composite slurry according to any one of claims 1 to 3 on a substrate, and then subjecting the coated substrate to an inert gas N2In the atmosphere, sintering and curing at 200-1400 ℃ to obtain the heating coating.
The preparation method of the graphene composite slurry heating coating is characterized by comprising the following steps: and printing and manufacturing high-temperature silver paste counter electrodes in the two geometric ends of the graphene paste coating before sintering and curing, and leading out a lead after the coating is cured.
The invention has the beneficial effects that: the first is that: the power density of the graphene heating coating can be adjusted through a formula, and an important condition for restricting the formula is that the highest tolerance temperature and the thermal expansion coefficient of the used base material are low, and the lower the thermal expansion coefficient of the base material is, the cracking is not easy to occur after the base material is subjected to cold and heat impact. Secondly, the following steps: the heat-resistant temperature range of the heating coating is 200-1000 ℃. Thirdly, the technical problems that the existing graphene coating technology can not produce heat at high temperature and the conventional high-temperature far infrared heating coating for the boiler can not conduct electricity are solved, and the technical target of electrifying and producing heat at high temperature is realized. Fourthly, the method comprises the following steps: can be coated on the surfaces of various base materials by all the conventional coating methods, has practicality, wide application range and low cost, and has the prospect of large-scale application.
Drawings
Fig. 1 is a structural analysis diagram of a graphene far-infrared high-temperature electric heating plate.
Description of reference numerals: the device comprises a substrate 1, a graphene heating coating 2 and a high-temperature silver paste counter electrode 3.
Detailed Description
The technical solutions in the embodiments of the present invention are described in detail below with reference to the drawings in the patent embodiments of the present invention. It should be understood that the embodiment described in this embodiment is merely a general case of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step other than that described in the claims, are within the scope of protection of the present invention.
The invention relates to graphene composite slurry, which comprises a base material, a surface dispersant, a carrier adhesive and a graphene dispersion liquid, wherein the weight percentage of the base material in the graphene composite slurry is 16-70%, and the base material comprises: the composite material comprises, by weight, 40-80% of micro silicon powder, 5-20% of nano silicon dioxide, 5-10% of nano titanium dioxide, 5-15% of silicate and 5-10% of quartz powder. The base material of the formula does not contain easily oxidized metal, can prolong the service life of the product, and has low thermal expansion coefficient. If the base material contains the easily-oxidized metal oxide, the base material is easily oxidized at high temperature, so that the conductivity of the base material is reduced, the resistance of a device is increased, and the power density of a product is reduced; meanwhile, the metal oxide pollutes the environment and is not beneficial to environmental protection.
The surface dispersant comprises inorganic dispersant and organic dispersant, wherein the inorganic dispersant comprises phosphate, silicate and the like (such as sodium hexametaphosphate, sodium polyphosphate, potassium polyphosphate, tetracalcium pyrophosphate and the like), the organic dispersant comprises polyacrylate, polyving akonate, rong sulfonate polycondensate, polyisobutylene maleate and the like, and the weight percentage of the surface dispersant in the graphene composite slurry is 1-5%.
The carrier adhesive comprises two types of inorganic adhesives and organic adhesives, wherein the organic adhesives comprise polyvinyl alcohol, various paints, organic silicon and the like, the inorganic adhesives comprise alkali metal silicate systems, phosphate systems, silica sol systems, metal alkoxide systems and the like, and the weight percentage of the carrier adhesive in the graphene composite slurry is 10-80%.
The graphene dispersion liquid is preferably a graphene powder material dispersion liquid produced by the medium-state and (wuhan) graphene science and technology limited company, the graphene dispersion liquid is prepared by adding a certain proportion of surfactant in the production process of the graphene dispersion liquid, the surfactant is about 0.1-1%, the particle size distribution can be regulated, and most of the graphene dispersion liquid takes pollution-free water as a solvent. The weight percentage of the graphene composite slurry is 3-15%.
As shown in fig. 1, the invention also discloses a graphene composite slurry heating coating, which comprises a substrate 1 and a graphene slurry coating 2, wherein the graphene slurry coating 2 is graphene composite slurry, the graphene composite slurry is graphene composite slurry as described above, and the substrate 1 can be made of metal (such as iron, copper, aluminum, zinc, stainless steel and alloy thereof), ceramic, glass, microcrystalline glass and the like. The heating coating can also comprise a high-temperature silver paste counter electrode 3, and the graphene slurry coating 2 is electrified through the high-temperature silver paste counter electrode 3.
The invention also discloses silver paste for producing the high-temperature silver paste counter electrode, wherein the silver paste accounts for 83-90 wt%, the thermoplastic polyimide resin accounts for 8-12 wt%, and the nitrile-group-containing rubber accounts for 2-5 wt%, wherein the nitrile group content of the nitrile-group-containing rubber accounts for more than 50 wt% of the nitrile-group-containing rubber, and the balance is rubber components. The mixing ratio of the resin and the nitrile-group-containing rubber can improve the viscosity coefficient of the silver paste, so that the rubber, the resin and the silver paste can be uniformly mixed, and the overall conductivity of the product is high. The silver powder comprises the nano-scale silver powder and the granular silver powder, wherein the nano-scale silver powder accounts for 25-40 wt% of the silver powder, the grain diameter of the nano-scale silver powder is 5-8 nm, the granular silver powder accounts for 60-75 wt% of the silver powder, and the grain diameter of the granular silver powder is 250-300 nm. The silver paste rubber has small specific energy, can bear high temperature of 1500 ℃, has the conductivity of more than 3000S/cm, and is suitable for supplying power to a heating coating. When the silver paste is used under a high-temperature condition, if the high-temperature silver paste counter electrode 3 is positioned on the outer layer of the graphene paste coating 2, the high-temperature silver paste counter electrode is easily oxidized under the high-temperature condition, and the long-term use is not facilitated. Therefore, the high-temperature silver paste counter electrode 3 is preferably arranged between the graphene paste coating 2 and the substrate 1, so that the high-temperature silver paste counter electrode 3 is isolated from oxygen when in use, and the long-term use of the product is ensured.
The invention also discloses a preparation method of the graphene-based composite slurry, which comprises the steps of mixing the components in the base material according to the weight percentage (namely 40-80% of micro silicon powder, 5-20% of nano silicon dioxide, 5-10% of nano titanium dioxide, 5-15% of silicate and 5-10% of quartz powder), and carrying out the series of processes of mixing, ball milling, screening, sintering, crushing and grinding to obtain the base material powder.
The base powder is sieved by a sieve with 100 meshes to 300 meshes, and the group with the minimum abrasive loss (the abrasive loss refers to the mass of the part of the abrasive which is remained on the sieve and cannot be sieved after being sieved by the sieve, and the sieved base powder is used for the subsequent steps) is the optimal ball milling condition.
The sintering process uses a muffle furnace to sinter at high temperature in air, the screened base material powder is slowly heated (the heating rate can be set to be 10-30 ℃/min) to 500-1500 ℃, the temperature is kept for 0.1-6 hours, and then the base material powder is annealed and cooled to the room temperature to obtain a crystal sample. And determining the optimal sintering process according to the microscopic morphology of the sintering powder, wherein the optimal sintering process is 800-1200 ℃, and the temperature is kept for 1-2 hours.
And crushing the crystal sample in the step, and then ball-milling the crystal sample into powder with uniform size, namely the base material of the graphene composite slurry.
And mechanically and uniformly mixing the base material, the surface dispersing agent, the carrier adhesive and the graphene dispersion liquid according to the weight percentage ratio to obtain the graphene composite slurry.
The invention also discloses a preparation method of the graphene composite slurry heating coating, which comprises the steps of coating the graphene composite slurry on a substrate by various conventional technical means such as spin coating, spray coating, roller coating, brush coating, curtain coating, dip coating, silk screen printing and the like, and then coating the coated substrate in an inert gas atmosphere (namely in an inert gas N)2Under the protection of (1), sintering and curing at the temperature of 200-1400 ℃ to obtain the exothermic coatingAnd (3) a layer. The invention introduces graphene and inert gas N into the formula of the slurry2Drying and film forming under protection, wherein the inert gas is used for preventing the graphene from losing efficacy due to high-temperature oxidation in the film forming process. Since graphene is originally an excellent conductor material, it becomes an insulator after high-temperature oxidation, and the conductivity of the film is lost, and the target of the conductive film cannot be achieved.
The substrate of the present invention can be made of metal (such as iron, copper, aluminum, zinc, stainless steel and other alloys), ceramic, glass ceramics, etc. Because of the highest temperature resistance of the base material, the heat-generating coating of the invention can emit high temperature of 1000 ℃.
According to the preparation method of the graphene composite slurry heating coating, silver paste counter electrodes can be printed and manufactured in the two geometric ends of the graphene slurry coating before heating and curing, and after the coating is cured, a lead is led out and connected to a household or industrial power supply to be electrified.
The basic principle of the preparation method of the graphene composite slurry heating coating is that the coating is in a high-resistance conductive state by utilizing the ultrahigh conductivity of the graphene, when current passes through the coating, the coating generates heat through thermal resistance, and then the heat energy is mainly radiated to the external environment in a far infrared ray mode by utilizing the ultrahigh thermal conductivity and the far infrared thermal radiation characteristic of the graphene, so that the heating purpose is achieved, and the far infrared radiation efficiency is as high as 90%.
The power density range of the high-temperature heating coating of the graphene composite slurry is 0.01-10W/cm2The power density is adjustable, and the temperature range for heating can be 200-1000 ℃.
The power density of the graphene heating coating can be adjusted by the formula, and an important condition for restricting the formula is the highest temperature resistance and the thermal expansion coefficient of the base material. In the invention, the formula with the heating temperature of 1000 ℃ can be realized by adopting the formula 2 in the table I and the formula 1 in the table II.
Table one: the following table shows the formulation of the binder in the graphene slurry of the present invention
Figure BDA0002251895690000091
Table two: the graphene paste formulations of the present invention are illustrated in the following table
Figure BDA0002251895690000101
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in any other specific form without departing from the spirit or essential attributes thereof. Thus, the present embodiments are merely exemplary and non-limiting. The scope of the invention is indicated by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to specific embodiments, not every embodiment contains only a single technical solution, and such description is for clarity reasons only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.

Claims (10)

1. The graphene composite slurry comprises a base material, a surface dispersant, a carrier adhesive and a graphene dispersion liquid, and is characterized in that: the weight percentage of the surface dispersant in the graphene composite slurry is 1-5%; the weight percentage of the carrier adhesive in the graphene composite slurry is 10-80%; the graphene dispersion liquid accounts for 3-15% of the graphene composite slurry by weight; the weight percentage of the base material in the graphene composite slurry is 16-70%, the base material comprises 40-80% of micro silicon powder, 5-20% of nano silicon dioxide, 5-10% of nano titanium dioxide, 5-15% of silicate and 5-10% of quartz powder.
2. The graphene composite paste according to claim 1, wherein: the formula of the base material in the graphene slurry is as follows:
Figure FDA0002251895680000011
the graphene slurry formula is as follows:
Figure FDA0002251895680000012
3. the graphene composite paste according to claim 1, wherein: the graphene dispersion liquid is a graphene powder dispersion liquid produced by mesomorphic graphene and (wuhan) graphene science and technology limited.
4. The utility model provides a compound thick liquids of graphite alkene coating that generates heat, includes substrate, graphite alkene thick liquids coating, its characterized in that: the graphene slurry coating is graphene composite slurry, the graphene composite slurry is the graphene composite slurry according to any one of claims 1 to 3, and the substrate is made of metal, ceramic, glass or microcrystalline glass.
5. The graphene composite paste heating coating according to claim 4, wherein: the graphene coating is characterized by also comprising a high-temperature silver paste counter electrode, and the high-temperature silver paste counter electrode is electrified with the graphene coating.
6. The graphene composite paste heating coating according to claim 5, wherein: the silver paste of the high-temperature silver paste counter electrode comprises, by weight, 83% -90% of silver powder, 8% -12% of thermoplastic polyimide resin and 2% -5% of nitrile-group-containing rubber, wherein the nitrile group content of the nitrile-group-containing rubber accounts for more than 50% of the weight of the nitrile-group-containing rubber, and the balance is rubber components, wherein the silver powder comprises nano-scale silver powder and granular silver powder, the nano-scale silver powder accounts for 25% -40% of the weight of the silver powder, the grain size of the nano-scale silver powder is 5nm-8nm, the granular silver powder accounts for 60% -75% of the weight of the silver powder, and the grain size of the granular silver.
7. A preparation method based on graphene composite slurry is characterized by comprising the following steps: the method comprises the following steps:
mixing, ball-milling, screening, sintering, crushing and grinding 40-80% of micro silicon powder, 5-20% of nano silicon dioxide, 5-10% of nano titanium dioxide, 5-15% of silicate and 5-10% of quartz powder according to weight percentage to obtain base material powder;
after screening the base material powder, heating the screened base material powder to 500-1500 ℃, preserving the heat for 0.1-6 hours, annealing and cooling to room temperature to obtain a crystal sample;
crushing the crystal sample and then ball-milling the crystal sample into powder, namely the base material of the graphene composite slurry;
1-5% of surface dispersant by weight percentage; 10% -80% of carrier adhesive; 3% -15% of graphene dispersion liquid; and uniformly mixing 16-70% of base material to obtain the graphene composite slurry.
8. The preparation method of the graphene-based composite slurry according to claim 7, wherein the preparation method comprises the following steps: heating the screened base material powder to 800-1200 ℃, and preserving heat for 1-2 hours.
9. A preparation method of a graphene composite slurry heating coating is characterized by comprising the following steps: coating the graphene composite paste according to any one of claims 1 to 3 on a substrate, and thenThe coated substrate is subjected to an inert gas N2In the atmosphere, sintering and curing at 200-1400 ℃ to obtain the heating coating.
10. The preparation method of the graphene composite slurry heating coating according to claim 9, characterized in that: and printing and manufacturing high-temperature silver paste counter electrodes in the two geometric ends of the graphene paste coating before sintering and curing, and leading out a lead after the coating is cured.
CN201911037379.2A 2019-10-29 2019-10-29 Graphene composite slurry, heating coating and preparation method thereof Pending CN110944416A (en)

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CN107135559A (en) * 2017-06-08 2017-09-05 阚晓敏 A kind of novel graphite alkene compound electric fever tablet and preparation method thereof
CN107216790A (en) * 2017-06-17 2017-09-29 合肥市晨雷思建筑材料科技有限公司 A kind of roof water-proof anti-aging ground finish paint and preparation method
CN107805414A (en) * 2017-11-15 2018-03-16 郴州国盛新材科技有限公司 A kind of graphene antiwear heat resisting coating and its preparation method and application
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CN108299830A (en) * 2018-02-07 2018-07-20 杭州白熊科技有限公司 Silicon rubber base Flexible graphene heating film and preparation method thereof, heating device and application
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CN111432509A (en) * 2020-04-15 2020-07-17 广东康烯科技有限公司 Titanium quantum dot doped graphene-based electric heating plate and electric heating device
CN112694774A (en) * 2021-01-21 2021-04-23 湖南翰坤实业有限公司 Environment-friendly energy-saving nano graphene heating coating and preparation method thereof

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Application publication date: 20200331