CN111303672A - Graphene high-temperature-resistant heat exchange enhanced coating, preparation method and coating method thereof - Google Patents
Graphene high-temperature-resistant heat exchange enhanced coating, preparation method and coating method thereof Download PDFInfo
- Publication number
- CN111303672A CN111303672A CN202010320419.0A CN202010320419A CN111303672A CN 111303672 A CN111303672 A CN 111303672A CN 202010320419 A CN202010320419 A CN 202010320419A CN 111303672 A CN111303672 A CN 111303672A
- Authority
- CN
- China
- Prior art keywords
- coating
- temperature
- graphene
- heat exchange
- mineral
- 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.)
- Granted
Links
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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- 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
- C09D5/18—Fireproof paints including high temperature resistant 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
Abstract
The invention provides a graphene high-temperature-resistant heat exchange enhanced coating, and a preparation method and a coating method thereof, wherein the preparation method comprises the following steps: dispersing the powdery layered mineral in an organic polymer solution, uniformly mixing, and carrying out spray drying on the organic polymer solution to obtain a layered mineral with the organic polymer attached to the surface; carrying out high-temperature heat treatment on the laminar mineral with the organic polymer layer attached to the surface to obtain a laminar mineral/graphene compound; adding the layered mineral/graphene compound, silica sol, a silane coupling agent and water into a stirring tank, and stirring at a preset rotating speed for a first preset time; and grinding for a second preset time until the fineness of the paint tested by the fineness scraper is within a preset range. The method provided by the invention can form a coating for enhancing heat dissipation after a simple baking and curing process, has strong adhesive force and temperature resistance of 800 ℃, can effectively enhance the heat radiation effect of the surface of an object, and has the effect of enhancing heat exchange.
Description
Technical Field
The invention relates to the technical field of coatings and heat dissipation, in particular to a graphene high-temperature-resistant heat exchange enhanced coating, a preparation method thereof and a coating method thereof.
Background
There are three main ways of heat exchange, namely heat conduction, heat convection and heat radiation. The existing heat exchange mode mainly utilizes the processes of heat conduction and heat convection, the two processes usually depend on the design of a heat system and a heat medium, the improvement effect is limited, and the heat exchange effect can be improved only by carrying out large-scale change and optimization. After the heat exchange enhancement coating is sprayed on the surface of an object, a coating with extremely high infrared emissivity can be formed, and heat on the surface of the object is directly converted into infrared radiation to be directly emitted out, so that the effect of heat exchange enhancement is realized. The heat exchange enhancement has very important significance in the fields of component heat dissipation, heating, industrial heating and the like, the working efficiency and the service life of component equipment can be greatly improved, and the energy conservation and the consumption reduction are realized.
The graphene serving as a carbonaceous nano material has extremely high infrared heating rate, thermal conductivity and specific surface area, and is an ideal additive for preparing the heat exchange enhanced coating. However, in the prior art, the existing coating is mainly an organic medium, has generally poor temperature resistance and cannot be used under a high-temperature condition. Due to the defect of poor temperature resistance, the conventional graphene heat-dissipation coating has a small application range and short service life, and cannot be widely applied in a large area. Meanwhile, the graphene and the coating matrix have poor binding force, so that the overall adhesion of the coating, poor thermal shock resistance and mechanical shock resistance and serious reliability are caused.
Disclosure of Invention
In order to solve the defects, the invention provides a graphene high-temperature-resistant heat exchange enhanced coating, and a preparation method and a coating method thereof, and solves the problems of poor temperature resistance of a coating and poor binding property of graphene and a coating matrix in the prior art.
In a first aspect, the invention provides a preparation method of a graphene high-temperature-resistant heat exchange enhanced coating, which comprises the following steps:
dispersing the powdery layered mineral in an organic polymer solution, uniformly mixing, and carrying out spray drying on the organic polymer solution to obtain a layered mineral with the organic polymer attached to the surface;
carrying out high-temperature heat treatment on the laminar mineral with the organic polymer layer attached to the surface to obtain a laminar mineral/graphene compound;
adding the layered mineral/graphene compound, silica sol, a silane coupling agent and water into a stirring tank, and stirring at a preset rotating speed for a first preset time;
and grinding for a second preset time until the fineness of the paint tested by the fineness scraper is within a preset range.
In an embodiment of the present invention, the powdery lamellar mineral is dispersed in the organic polymer solution and uniformly mixed, and the mixture is spray-dried to obtain the organic polymer layer-attached lamellar mineral with the surface attached with:
the organic polymer solution is obtained by dissolving polyimide acid, polyacrylonitrile, epoxy resin, polyurethane or polymethyl methacrylate in a soluble solvent, wherein the soluble solvent is water, ethanol, toluene, N-methylpyrrolidone or dimethylformamide; wherein the concentration of the organic polymer solution is 1-20 wt%; the powdery lamellar mineral is one or a mixture of montmorillonite powder, mica powder, talcum powder, pyrophyllite powder and kaolin powder.
In an embodiment of the present invention, in the layered mineral/graphene composite obtained by performing high-temperature heat treatment on the layered mineral with the organic polymer layer attached to the surface, the following steps are performed:
the temperature of the high-temperature heat treatment is 500-1000 ℃, and the high-temperature heat treatment is carried out for 5-60min in a nitrogen atmosphere.
In an embodiment of the present invention, the adding the layered mineral/graphene composite, the silica sol, the silane coupling agent, and water into a stirring tank, and stirring at a preset rotation speed for a first preset time includes:
adding the layered mineral/graphene compound, silica sol, a silane coupling agent and water into a stirring tank according to a preset weight ratio; wherein the weight ratio of each component is as follows: layered mineral/graphene composite: 1-10 parts; silica sol: 20-40 parts; silane coupling agent: 2-10 parts; water: 20-50 parts;
stirring at 500-7000 rpm for 10-60 minutes.
In one embodiment of the present invention, the silane coupling agent includes A151, Y-4310, A171, A172.
In an embodiment of the invention, the grinding is performed for a second predetermined time until the fineness of the paint is within a predetermined range as measured by the fineness scraper:
grinding for 10-120 min in a vertical active horizontal sand mill until the fineness of the paint is not more than 10 um.
In a second aspect, the invention provides a graphene high-temperature-resistant heat exchange enhanced coating prepared by the preparation method.
In a third aspect, the invention provides a coating method of a graphene high-temperature-resistant heat exchange enhanced coating, which comprises the following steps:
the coating is coated on the surface of an object by spraying, brushing or dip-coating;
baking and curing at 80-300 deg.C for 10-60 min to form a coating with heat radiation effect and enhanced heat exchange.
In one embodiment of the invention, the coating has a thickness of 5-100um and an emissivity of > 0.9.
In a fourth aspect, the invention also provides applications of the graphene high-temperature-resistant heat exchange enhancement coating in heat dissipation of electronic elements, heat efficiency enhancement of heaters, industrial heat exchange and energy saving and consumption reduction of household appliances.
In summary, the invention provides a graphene high-temperature-resistant heat exchange enhanced coating, a preparation method thereof and a coating method thereof, and the graphene high-temperature-resistant heat exchange enhanced coating has the following beneficial effects:
and (3) growing graphene on the surface of the layered mineral by using the polymer as a carbon source. Good bonding of graphene to layered minerals can be achieved. The layered mineral can be used as a mesophase, and forms good combination with silicon oxide in silica sol and a silane coupling agent, so that the dispersibility of graphene in the coating and the adhesion in the coating are improved, the mechanical property of the coating is further improved, and the temperature resistance, the overall adhesive force, the thermal shock resistance and the mechanical shock resistance of the coating are greatly enhanced. Meanwhile, the coating completely adopts inorganic materials such as layered minerals, silica sol and the like as main bonding materials to be matched with graphene, and in the curing process, the inorganic materials finally form silicate derivatives with excellent temperature resistance, so that the temperature resistance level of the coating is greatly improved. Meanwhile, the lamellar structure of the lamellar mineral is also beneficial to cracking and crystallizing the high-molecular solid carbon source on the surface of the lamellar mineral to form high-quality graphene.
Drawings
Fig. 1 is a schematic flow chart of a preparation method of the graphene high-temperature-resistant heat exchange enhanced coating of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, fig. 1 is a schematic flow chart of a method for preparing a graphene high-temperature-resistant heat exchange enhanced coating according to the present invention. The high-temperature-resistant heat exchange enhanced graphene coating comprises the following components: layered mineral/graphene composite, silica sol, silane coupling agent and water. The layered mineral/graphene composite is prepared by wrapping organic polymers with layered minerals and performing high-temperature heat treatment. The obtained graphene high-temperature-resistant heat dissipation coating can be applied to the surfaces of metal radiating fins and metal fins of heating tubes through spraying, brushing and roller coating construction. The coating for enhancing heat dissipation can be formed after a simple baking and curing process, the adhesive force is strong, the temperature resistance can reach 800 ℃, the heat radiation effect on the surface of an object can be effectively enhanced, and the effect of enhancing heat exchange is achieved. The preparation method specifically comprises the following steps of S1-S4:
s1, dispersing the powdery layered mineral in the organic polymer solution, uniformly mixing, and carrying out spray drying on the organic polymer solution to obtain a layered mineral with the organic polymer layer attached to the surface;
s2, carrying out high-temperature heat treatment on the laminar mineral with the organic polymer layer attached to the surface to obtain a laminar mineral/graphene compound;
s3, adding the layered mineral/graphene compound, silica sol, a silane coupling agent and water into a stirring tank, and stirring at a preset rotating speed for a first preset time;
and S4, grinding for a second preset time until the fineness of the paint is within a preset range by the fineness scraper test.
After the graphene high-temperature-resistant heat exchange enhanced coating is prepared, the invention also provides a coating method of the graphene high-temperature-resistant heat exchange enhanced coating, which comprises the following steps of S5-S6:
s5, coating the surface of the object by spraying, brushing or dip-coating;
and S6, baking and curing at the temperature of 80-300 ℃ for 10-60 minutes to form a coating with a heat radiation effect and heat exchange enhancement.
The invention of the present application is further illustrated by the following examples, which are not intended to limit the scope of the application in any way. The raw materials used in the examples were all commercially available products unless otherwise specified.
Example 1
A preparation method of a graphene high-temperature-resistant heat exchange enhanced coating comprises the following steps:
s1, pouring the montmorillonite powder with the fineness of 1000 meshes into a polyvinyl alcohol aqueous solution with the concentration of 10 wt%, uniformly stirring, and then carrying out spray drying to obtain the montmorillonite powder with the polyvinyl alcohol attached to the surface.
S2, placing the montmorillonite powder with the surface attached with the polyvinyl alcohol in a nitrogen atmosphere furnace, and treating for 60 minutes at the temperature of 800 ℃ to obtain the layered mineral/graphene composite powder.
S3, adding the layered mineral/graphene composite, silica sol, a silane coupling agent A151 and water into a stirring tank according to the proportion of 1: 30: 5: 64, and stirring for 60 minutes at the rotating speed of 500 revolutions per minute.
And S4, grinding for 60 minutes in a vertical sand mill until the fineness of the coating tested by the fineness scraper is not more than 10um, and obtaining the graphene high-temperature-resistant heat exchange enhanced coating introduced by the patent.
A coating method of a graphene high-temperature-resistant heat exchange enhanced coating comprises the following steps
S5, constructing the prepared graphene high-temperature-resistant heat exchange enhancement coating on the surface of an object needing heat exchange enhancement in a rolling coating mode.
S6, baking and curing at 300 ℃ for 60 minutes to obtain the required coating, wherein the thickness of the coating is 5-100um, the thermal emissivity is more than 0.9, and the heat-resistant temperature of the coating is 800 ℃.
Example 2
A preparation method of a graphene high-temperature-resistant heat exchange enhanced coating comprises the following steps:
s1, pouring mica powder with fineness of 50 meshes into toluene solution of epoxy resin with concentration of 1 wt%, stirring uniformly, and spray-drying to obtain the mica powder with epoxy resin attached on the surface.
S2, placing the mica powder with the epoxy resin attached to the surface in a nitrogen atmosphere furnace, and treating at 500 ℃ for 60 minutes to obtain the layered mineral/graphene composite powder.
S3, adding the layered mineral/graphene composite, silica sol, silane coupling agent Y-4310 and water into a stirring tank according to the proportion of 10: 40: 10: 40, and stirring for 20 minutes at the rotating speed of 5000 revolutions per minute.
And S4, grinding for 120 minutes in a vertical sand mill until the fineness of the coating tested by the fineness scraper is not more than 10um, and thus obtaining the graphene high-temperature-resistant heat exchange enhanced coating introduced by the patent.
A coating method of a graphene high-temperature-resistant heat exchange enhanced coating comprises the following steps
S5, the prepared graphene high-temperature-resistant heat exchange enhancement coating is constructed on the surface of an object needing heat exchange enhancement in a spraying mode.
S6, baking and curing at 80 ℃ for 120 minutes to obtain the required coating, wherein the thickness of the coating is 5-100um, the thermal emissivity is more than 0.9, and the heat-resistant temperature of the coating is 800 ℃.
Example 3
A preparation method of a graphene high-temperature-resistant heat exchange enhanced coating comprises the following steps:
s1, pouring the talcum powder with the fineness of 500 meshes into the N-methyl pyrrolidone solution of the polymethyl methacrylate with the concentration of 20 wt%, uniformly stirring, and then carrying out spray drying to obtain the talcum powder with the polymethyl methacrylate attached on the surface.
S2, placing the talcum powder with the polymethyl methacrylate attached to the surface in a nitrogen atmosphere furnace, and treating for 5 minutes at the temperature of 1000 ℃ to obtain the layered mineral/graphene composite powder.
S3, adding the layered mineral/graphene composite, silica sol, the silane coupling agent A171 and water into a stirring tank according to the proportion of 5: 30: 5: 60, and stirring for 30 minutes at the rotating speed of 1000 revolutions per minute.
And S4, grinding for 120 minutes in a horizontal sand mill until the fineness of the coating tested by the fineness scraper is not more than 10um, and thus obtaining the graphene high-temperature-resistant heat exchange enhanced coating introduced by the patent.
A coating method of a graphene high-temperature-resistant heat exchange enhanced coating comprises the following steps
S5, the prepared graphene high-temperature-resistant heat exchange enhancement coating is constructed on the surface of an object needing heat exchange enhancement in a dip coating mode.
S6, baking and curing at 250 ℃ for 60 minutes to obtain the required coating, wherein the thickness of the coating is 5-100um, the thermal emissivity is more than 0.9, and the heat-resistant temperature of the coating is 800 ℃.
Example 4
A preparation method of a graphene high-temperature-resistant heat exchange enhanced coating comprises the following steps:
s1, pouring kaolin powder with the fineness of 2000 meshes into a dimethylformamide solution of polyimide acid with the concentration of 15 wt%, uniformly stirring, and then carrying out spray drying to obtain the kaolin powder with the polyimide attached on the surface.
S2, placing the kaolin powder with the polyimide attached on the surface in a nitrogen atmosphere furnace, and treating for 30 minutes at the temperature of 800 ℃ to obtain the layered mineral/graphene composite powder.
S3, adding the layered mineral/graphene composite, silica sol, the silane coupling agent A171 and water into a stirring tank according to the proportion of 5: 20: 10: 65, and stirring for 20 minutes at the rotating speed of 3000 revolutions per minute.
And S4, grinding for 60 minutes in a horizontal sand mill until the fineness of the coating tested by the fineness scraper is not more than 10um, and obtaining the graphene high-temperature-resistant heat exchange enhanced coating introduced by the patent.
A coating method of a graphene high-temperature-resistant heat exchange enhanced coating comprises the following steps
S5, the prepared graphene high-temperature-resistant heat exchange enhancement coating is constructed on the surface of an object needing heat exchange enhancement in a spraying mode.
S6, baking and curing at 359 ℃ for 10 minutes to obtain the required coating, wherein the thickness of the coating is 5-100um, the thermal emissivity is more than 0.9, and the heat-resistant temperature of the coating is 800 ℃.
Example 5
A preparation method of a graphene high-temperature-resistant heat exchange enhanced coating comprises the following steps:
s1, pouring mica powder/talcum powder (weight ratio is 1: 1) with fineness of 5000 meshes into dimethylformamide of polyacrylonitrile with concentration of 5 wt%, uniformly stirring, and spray-drying to obtain the mica powder/talcum powder with polyacrylonitrile attached on the surface.
S2, placing the mica powder/talcum powder with polyacrylonitrile attached on the surface in a nitrogen atmosphere furnace, and treating at 500 ℃ for 60 minutes to obtain the layered mineral/graphene composite powder.
S3, adding the layered mineral/graphene composite, the silica sol, the silane coupling agent A172 and the water into a stirring tank according to the proportion of 1: 27: 2: 70, and stirring for 30 minutes at the rotating speed of 2000 rpm.
And S4, grinding for 10 minutes in a horizontal sand mill until the fineness of the coating tested by the fineness scraper is not more than 10um, and obtaining the graphene high-temperature-resistant heat exchange enhanced coating introduced by the patent.
A coating method of a graphene high-temperature-resistant heat exchange enhanced coating comprises the following steps
S5, the prepared graphene high-temperature-resistant heat exchange enhancement coating is constructed on the surface of an object needing heat exchange enhancement in a spraying mode.
S6, baking and curing at 150 ℃ for 40 minutes to obtain the required coating, wherein the thickness of the coating is 5-100um, the thermal radiation coefficient is more than 0.9, and the heat-resistant temperature of the coating is 800 ℃.
Example 6
A preparation method of a graphene high-temperature-resistant heat exchange enhanced coating comprises the following steps:
s1, pouring mica powder/talcum powder (weight ratio is 1: 1) with fineness of 5000 meshes into N-methyl pyrrolidone of polyurethane with concentration of 5 wt%, uniformly stirring, and spray-drying to obtain the mica powder/talcum powder with polyurethane attached on the surface.
S2, placing the mica powder/talcum powder with the polyurethane attached on the surface in a nitrogen atmosphere furnace, and treating for 60 minutes at the temperature of 500 ℃ to obtain the layered mineral/graphene composite powder.
S3, adding the layered mineral/graphene composite, silica sol, a silane coupling agent A151 and water into a stirring tank according to the proportion of 10: 40: 10: 40, and stirring for 10 minutes at the rotating speed of 2000 rpm.
And S4, grinding for 30 minutes in a horizontal sand mill until the fineness of the coating tested by the fineness scraper is not more than 10um, and obtaining the graphene high-temperature-resistant heat exchange enhanced coating introduced by the patent.
A coating method of a graphene high-temperature-resistant heat exchange enhanced coating comprises the following steps
S5, the prepared graphene high-temperature-resistant heat exchange enhancement coating is constructed on the surface of an object needing heat exchange enhancement in a brush coating mode.
S6, baking and curing at 200 ℃ for 80 minutes to obtain the required coating, wherein the thickness of the coating is 5-100um, the thermal emissivity is more than 0.9, and the heat-resistant temperature of the coating is 800 ℃.
The invention also provides application of the graphene high-temperature-resistant heat exchange enhancement coating in heat dissipation of electronic elements, heat efficiency enhancement of heaters, industrial heat exchange and energy conservation and consumption reduction of household appliances. Preferably, the graphene high-temperature-resistant heat exchange enhancement coating provided by the invention is applied to the surface of a workpiece to form a graphene high-temperature-resistant heat exchange enhancement coating, and has the beneficial effects. See the following table for details:
in conclusion, the invention uses the polymer as the carbon source to grow the graphene on the surface of the layered mineral. Good bonding of graphene to layered minerals can be achieved. The layered mineral can be used as a mesophase, and forms good combination with silicon oxide in silica sol and a silane coupling agent, so that the dispersibility of graphene in the coating and the adhesion in the coating are improved, the mechanical property of the coating is further improved, and the temperature resistance, the overall adhesive force, the thermal shock resistance and the mechanical shock resistance of the coating are greatly enhanced. Meanwhile, the coating completely adopts inorganic materials such as layered minerals, silica sol and the like as main bonding materials to be matched with graphene, and in the curing process, the inorganic materials finally form silicate derivatives with excellent temperature resistance, so that the temperature resistance level of the coating is greatly improved. Meanwhile, the lamellar structure of the lamellar mineral is also beneficial to cracking and crystallizing the high-molecular solid carbon source on the surface of the lamellar mineral to form high-quality graphene.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A preparation method of a graphene high-temperature-resistant heat exchange enhanced coating is characterized by comprising the following steps:
dispersing the powdery layered mineral in an organic polymer solution, uniformly mixing, and carrying out spray drying on the organic polymer solution to obtain a layered mineral with the organic polymer attached to the surface;
carrying out high-temperature heat treatment on the laminar mineral with the organic polymer layer attached to the surface to obtain a laminar mineral/graphene compound;
adding the layered mineral/graphene compound, silica sol, a silane coupling agent and water into a stirring tank, and stirring at a preset rotating speed for a first preset time;
and grinding for a second preset time until the fineness of the paint tested by the fineness scraper is within a preset range.
2. The preparation method according to claim 1, wherein the powdery lamellar mineral is dispersed in the organic polymer solution and uniformly mixed, and the mixture is spray-dried to obtain the lamellar mineral with the organic polymer layer attached to the surface:
the organic polymer solution is obtained by dissolving polyimide acid, polyacrylonitrile, epoxy resin, polyurethane or polymethyl methacrylate in a soluble solvent, wherein the soluble solvent is water, ethanol, toluene, N-methylpyrrolidone or dimethylformamide; wherein the concentration of the organic polymer solution is 1-20 wt%; the powdery lamellar mineral is one or a mixture of montmorillonite powder, mica powder, talcum powder, pyrophyllite powder and kaolin powder.
3. The preparation method according to claim 1, wherein the laminated mineral with the organic polymer layer attached to the surface is subjected to high-temperature heat treatment to obtain a laminated mineral/graphene composite, wherein:
the temperature of the high-temperature heat treatment is 500-1000 ℃, and the high-temperature heat treatment is carried out for 5-60min in a nitrogen atmosphere.
4. The preparation method according to claim 1, wherein the adding the layered mineral/graphene composite, the silica sol, the silane coupling agent and the water into a stirring tank, and stirring at a preset rotation speed for a first preset time comprises:
adding the layered mineral/graphene compound, silica sol, a silane coupling agent and water into a stirring tank according to a preset weight ratio; wherein the weight ratio of each component is as follows: layered mineral/graphene composite: 1-10 parts; silica sol: 20-40 parts; silane coupling agent: 2-10 parts; water: 20-50 parts;
stirring at 500-7000 rpm for 10-60 minutes.
5. The production method according to claim 4, wherein the silane coupling agent comprises A151, Y-4310, A171, A172.
6. The method of manufacturing according to claim 1, wherein the grinding is performed for a second preset time until the fineness of the fineness-scraper test coating is within a preset range:
grinding for 10-120 min in a vertical active horizontal sand mill until the fineness of the paint is not more than 10 um.
7. The graphene high-temperature-resistant heat exchange enhanced coating is characterized by being prepared by the preparation method according to claims 1-6.
8. A coating method of a graphene high-temperature-resistant heat exchange enhanced coating is characterized by comprising the following steps:
the coating is coated on the surface of an object by spraying, brushing or dip-coating;
baking and curing at 80-300 deg.C for 10-60 min to form a coating with heat radiation effect and enhanced heat exchange.
9. The coating method according to claim 8, wherein the coating has a coating thickness of 5-100um and an emissivity > 0.9.
10. The graphene high-temperature-resistant heat exchange enhancement coating of claim 7 is applied to heat dissipation of electronic elements, heat efficiency enhancement of heaters, industrial heat exchange and energy conservation and consumption reduction of household appliances.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010320419.0A CN111303672B (en) | 2020-04-21 | 2020-04-21 | Graphene high-temperature-resistant heat exchange enhanced coating, preparation method and coating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010320419.0A CN111303672B (en) | 2020-04-21 | 2020-04-21 | Graphene high-temperature-resistant heat exchange enhanced coating, preparation method and coating method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111303672A true CN111303672A (en) | 2020-06-19 |
| CN111303672B CN111303672B (en) | 2021-09-24 |
Family
ID=71157545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010320419.0A Active CN111303672B (en) | 2020-04-21 | 2020-04-21 | Graphene high-temperature-resistant heat exchange enhanced coating, preparation method and coating method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111303672B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116814155A (en) * | 2023-08-02 | 2023-09-29 | 沈阳市航达科技有限责任公司 | High-performance alloy wire hot pier processing lubricating coating and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110089835A (en) * | 2011-07-13 | 2011-08-09 | 이재환 | High density nano coating compositions |
| CN106587017A (en) * | 2016-12-14 | 2017-04-26 | 中国石油大学(北京) | Porous graphene and preparation method thereof |
| CN109554110A (en) * | 2018-11-26 | 2019-04-02 | 四川陆亨能源科技有限公司 | A kind of thermostable heat-conductive self-cleaning coating and preparation method thereof |
-
2020
- 2020-04-21 CN CN202010320419.0A patent/CN111303672B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110089835A (en) * | 2011-07-13 | 2011-08-09 | 이재환 | High density nano coating compositions |
| CN106587017A (en) * | 2016-12-14 | 2017-04-26 | 中国石油大学(北京) | Porous graphene and preparation method thereof |
| CN109554110A (en) * | 2018-11-26 | 2019-04-02 | 四川陆亨能源科技有限公司 | A kind of thermostable heat-conductive self-cleaning coating and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116814155A (en) * | 2023-08-02 | 2023-09-29 | 沈阳市航达科技有限责任公司 | High-performance alloy wire hot pier processing lubricating coating and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111303672B (en) | 2021-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110054864B (en) | High-thermal-conductivity composite filler and preparation method of polymer-based composite material thereof | |
| CN108059917B (en) | Nano modified polysilazane antistatic material and preparation method thereof | |
| CN104817930A (en) | Heat-conductive and anti-corrosion coating based on graphene functional material and preparation method of same | |
| CN114031943B (en) | Inter-surface high-thermal-conductivity composite material and preparation method thereof | |
| CN106752446B (en) | A kind of thermally conductive fluorine carbon finishing paint of automatically cleaning that graphite phase carbon nitride-graphene complex is modified | |
| CN110054918A (en) | A kind of cracking resistance inorganic heat preservation coating | |
| CN103589275A (en) | Solar heat absorbing paint and manufacturing method thereof | |
| CN106146866B (en) | A kind of polyimide composite film and preparation method thereof | |
| CN111303672B (en) | Graphene high-temperature-resistant heat exchange enhanced coating, preparation method and coating method thereof | |
| CN103642362A (en) | High-temperature-resistant anticorrosive organic coating | |
| CN104023505A (en) | Method for preparing high thermal conductivity graphite film | |
| CN111892857A (en) | Industrial pipeline anticorrosion powder coating and preparation method thereof | |
| CN113388311A (en) | Preparation method of nano titanium dioxide modified hexagonal boron nitride modified coating | |
| CN110951287B (en) | High-temperature-resistant ceramic coating and preparation method thereof | |
| CN104152890A (en) | Method for preparing thermal-shock-resistant high-temperature-resistant insulation coating on flexible metal part | |
| CN104774522B (en) | Heat insulation paint preparation method | |
| CN111303727B (en) | Solvent-free super-thick-paste organic-inorganic hybrid nano modified heavy-duty anticorrosive paint and preparation method thereof | |
| CN104261409A (en) | Method for preparing silicon carbide powder serving as organic composite material reinforcement | |
| CN102250545A (en) | High temperature resistant antistatic coating and preparation method thereof | |
| CN109627815A (en) | A kind of corrosion resistant nano coating and preparation method thereof | |
| CN108424721A (en) | A kind of preparation method of heat radiation coating for computer | |
| CN104774508A (en) | Preparing method of modified heat insulating coating | |
| CN111205740A (en) | Nano ceramic black paint, coating and preparation method thereof | |
| CN104401983A (en) | Preparation method of natural graphite film with high thermal conductivity | |
| CN105330335B (en) | The preparation method of coating structure with fire-retardant heat insulation function |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |