CN112521843A - Preparation method of carbon nanotube structure infrared radiation heat dissipation coating - Google Patents
Preparation method of carbon nanotube structure infrared radiation heat dissipation coating Download PDFInfo
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- CN112521843A CN112521843A CN202011408496.8A CN202011408496A CN112521843A CN 112521843 A CN112521843 A CN 112521843A CN 202011408496 A CN202011408496 A CN 202011408496A CN 112521843 A CN112521843 A CN 112521843A
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- 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
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- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a preparation method of an infrared radiation heat dissipation coating with a carbon nanotube structure, belongs to the field of infrared radiation heat dissipation coatings, and aims at the existing heat dissipation problem, the following scheme is provided, and raw materials are prepared: 12-18 parts of nano graphite, 4-10 parts of silicon carbide infrared radiation powder, 5-15 parts of a powder dispersing agent, 15-25 parts of silicon dioxide, 30-40 parts of a binder, 6-10 parts of a high thermal conductive filler, 50-200 parts of waterborne polyurethane, 0.5-2 parts of a defoaming agent, 0.8-1.5 parts of an anti-settling agent, 0.2-0.7 part of a wetting agent, 1-4 parts of a film forming aid, 0.5-1 part of a leveling agent, 2-10 parts of an antifreeze agent, 0.5-1 part of a coating dispersing agent and 25-45 parts of water, and the nano graphite, the silicon carbide infrared radiation powder, the water and the dispersing agent in parts by weight are ultrasonically dispersed in a pulverizer, pulverized, taken out and placed in a reaction kettle for mixing and stirring to obtain a uniformly dispersed filler dispersing solution. The invention achieves high-efficiency heat dissipation, reduces the surface temperature of the power device and effectively solves the heat dissipation problem of components.
Description
Technical Field
The invention relates to the technical field of radiation heat dissipation coatings, in particular to a preparation method of an infrared radiation heat dissipation coating with a carbon nano tube structure.
Background
The carbon nano tube is used as a nano material with excellent comprehensive performance, has a superfine nano-scale structure, has an ultra-large specific surface area, has very high emissivity, and the radiation coefficient of the arrayed carbon nano tube can even reach 0.99, so the carbon nano tube is the material with the highest radiation rate at present; meanwhile, the carbon nanotube has very high thermal conductivity in the axial direction. Therefore, the coating prepared by using the carbon nano tube as the filler has high radiance and thermal conductivity.
At present, the electronic industry radiates heat by sticking radiating fins on the surfaces of electronic components and installing fans, the radiating assembly mainly enhances heat conduction and convection, but the size of an electronic product can be obviously increased, and the design of miniaturization and precision of the product is not facilitated. Compared with the enhancement of heat conduction and heat convection, the infrared radiance of the heat dissipation assembly is improved to enhance the heat dissipation performance of the device. The traditional heat dissipation mode can not meet the heat dissipation requirement, and has the defects of low radiation heat dissipation efficiency, complex structure, large volume, space limitation, easy rusting in the use places of air conditioners, automobiles, refrigerators and the like, high cost, inconvenient use and the like.
Therefore, the invention provides a preparation method of the carbon nano tube structure infrared radiation heat dissipation coating.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a preparation method of an infrared radiation heat-dissipation coating with a carbon nano tube structure.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of an infrared radiation heat dissipation coating with a carbon nano tube structure comprises the following steps;
s1, preparing raw materials: 12-18 parts of nano graphite, 4-10 parts of silicon carbide infrared radiation powder, 5-15 parts of a powder dispersing agent, 15-25 parts of silicon dioxide, 30-40 parts of a binder, 6-10 parts of a high thermal conductive filler, 50-200 parts of waterborne polyurethane, 0.5-2 parts of a defoaming agent, 0.8-1.5 parts of an anti-settling agent, 0.2-0.7 part of a wetting agent, 1-4 parts of a film forming aid, 0.5-1 part of a leveling agent, 2-10 parts of an antifreeze agent, 0.5-1 part of a coating dispersing agent and 25-45 parts of water;
s2, ultrasonically dispersing the nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent in a pulverizer, taking out the pulverized nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent after pulverization, putting the pulverized nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent into a reaction kettle, and mixing and stirring the mixture to obtain uniformly dispersed filler dispersion liquid;
s3, stirring and mixing the waterborne polyurethane and the film-forming assistant in parts by weight, mixing for 20-30min to dissolve, and mixing with the filler dispersion liquid;
s4, adding the binder, the defoaming agent, the high-thermal-conductivity filler, the wetting agent, the leveling agent and the antifreeze agent into the mixture S3, and continuing stirring at a high speed for 10-20min to prepare the infrared radiation heat dissipation coating;
preferably, in S1, the raw material: 14-16 parts of nano graphite, 5-8 parts of silicon carbide infrared radiation powder, 7-12 parts of a powder dispersing agent, 18-22 parts of silicon dioxide, 35-38 parts of a binder, 7-9 parts of a high thermal conductive filler, 70-150 parts of waterborne polyurethane, 0.8-1.5 parts of a defoaming agent, 1-1.2 parts of an anti-settling agent, 0.4-0.5 part of a wetting agent, 2-4 parts of a film forming aid, 0.6-0.8 part of a flatting agent, 4-8 parts of an antifreeze agent, 0.7-1 part of a coating dispersing agent and 30-40 parts of water;
preferably, in S1, the raw material: 15 parts of nano graphite, 6 parts of silicon carbide infrared radiation powder, 10 parts of powder dispersing agent, 18 parts of silicon dioxide, 36 parts of binder, 8 parts of high-thermal-conductivity filler, 80 parts of waterborne polyurethane, 1.5 parts of defoaming agent, 1 part of anti-settling agent, 0.5 part of wetting agent, 3 parts of film-forming assistant, 0.7 part of leveling agent, 6 parts of antifreeze agent, 0.8 part of coating dispersing agent and 35 parts of water;
preferably, the dispersing agent in the S1 is ultrasonically dispersed in a pulverizer for 5-8min, and the stirring time of the reaction kettle is 30-50 min.
Preferably, the dispersing agent in the S2 is ultrasonically dispersed in a pulverizer for 5-8min, and the stirring time of the reaction kettle is 30-50 min.
Preferably, the binder is selected from one or more of polyether sulfone resin (PES), polyamide-imide resin (PAI), polyamide resin (PA) and polyphenylene sulfide resin (PPS).
Preferably, the high thermal conductive filler is selected from inorganic high temperature resistant pigments such as carbon black and iron oxide red, or organic high temperature resistant pigments such as phthalocyanine blue.
Preferably, the dispersant is polyacrylamide or guar gum.
Compared with the prior art, the invention has the beneficial effects that:
the infrared radiation heat dissipation coating prepared by the technical scheme of the invention takes the waterborne polyurethane resin as a film forming substance to prepare the carbon nano tube heat dissipation coating which dissipates heat by infrared radiation; the surface temperature of a power device is reduced, the heat dissipation problem of components is effectively solved, the perfect lattice structure of the G-TINM8 carbon nano tube obtained after graphitization is a main factor that the infrared radiation heat dissipation coating prepared by the carbon nano tube as a filler has good heat dissipation effect, namely, the higher the graphitization degree of the carbon nano tube is, the fewer structural defects are, the heat dissipation effect of the infrared radiation heat dissipation coating prepared by the carbon nano tube is good, the service performance is improved, and the infrared radiation heat dissipation coating is suitable for popularization.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example one
The invention provides a preparation method of an infrared radiation heat dissipation coating with a carbon nano tube structure, which comprises the following steps;
s1, preparing raw materials: 12 parts of nano graphite, 4 parts of silicon carbide infrared radiation powder, 5 parts of powder dispersing agent, 15 parts of silicon dioxide, 30 parts of binder, 6 parts of high-thermal-conductivity filler, 50 parts of waterborne polyurethane, 0.5 part of defoaming agent, 0.8 part of anti-settling agent, 0.2 part of wetting agent, 1 part of film-forming assistant, 0.5 part of flatting agent, 2 parts of antifreeze agent, 0.5 part of coating dispersing agent and 25 parts of water;
s2, ultrasonically dispersing the nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent in a pulverizer, taking out the pulverized nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent after pulverization, putting the pulverized nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent into a reaction kettle, and mixing and stirring the mixture to obtain uniformly dispersed filler dispersion liquid;
s3, stirring and mixing the waterborne polyurethane and the film-forming assistant in parts by weight, mixing for 20-30min to dissolve, and mixing with the filler dispersion liquid;
and S4, adding the binder, the defoaming agent, the high-thermal-conductivity filler, the wetting agent, the leveling agent and the antifreeze agent into the mixture S3, and continuously stirring at a high speed for 10-20min to obtain the infrared radiation heat dissipation coating.
Example two
The invention provides a preparation method of an infrared radiation heat dissipation coating with a carbon nano tube structure, which comprises the following steps;
s1, preparing raw materials: 18 parts of nano graphite, 10 parts of silicon carbide infrared radiation powder, 15 parts of powder dispersing agent, 25 parts of silicon dioxide, 40 parts of binder, 10 parts of high-thermal-conductivity filler, 200 parts of waterborne polyurethane, 2 parts of defoaming agent, 1.5 parts of anti-settling agent, 0.7 part of wetting agent, 4 parts of film-forming assistant, 1 part of leveling agent, 10 parts of antifreeze agent, 1 part of coating dispersing agent and 45 parts of water;
s2, ultrasonically dispersing the nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent in a pulverizer, taking out the pulverized nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent after pulverization, putting the pulverized nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent into a reaction kettle, and mixing and stirring the mixture to obtain uniformly dispersed filler dispersion liquid;
s3, stirring and mixing the waterborne polyurethane and the film-forming assistant in parts by weight, mixing for 20-30min to dissolve, and mixing with the filler dispersion liquid;
and S4, adding the binder, the defoaming agent, the high-thermal-conductivity filler, the wetting agent, the leveling agent and the antifreeze agent into the mixture S3, and continuously stirring at a high speed for 10-20min to obtain the infrared radiation heat dissipation coating.
EXAMPLE III
The invention provides a preparation method of an infrared radiation heat dissipation coating with a carbon nano tube structure, which comprises the following steps;
s1, preparing raw materials: 15 parts of nano graphite, 6 parts of silicon carbide infrared radiation powder, 10 parts of powder dispersing agent, 18 parts of silicon dioxide, 36 parts of binder, 8 parts of high-thermal-conductivity filler, 80 parts of waterborne polyurethane, 1.5 parts of defoaming agent, 1 part of anti-settling agent, 0.5 part of wetting agent, 3 parts of film-forming assistant, 0.7 part of leveling agent, 6 parts of antifreeze agent, 0.8 part of coating dispersing agent and 35 parts of water;
s2, ultrasonically dispersing the nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent in a pulverizer, taking out the pulverized nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent after pulverization, putting the pulverized nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent into a reaction kettle, and mixing and stirring the mixture to obtain uniformly dispersed filler dispersion liquid;
s3, stirring and mixing the waterborne polyurethane and the film-forming assistant in parts by weight, mixing for 20-30min to dissolve, and mixing with the filler dispersion liquid;
and S4, adding the binder, the defoaming agent, the high-thermal-conductivity filler, the wetting agent, the leveling agent and the antifreeze agent into the mixture S3, and continuously stirring at a high speed for 10-20min to obtain the infrared radiation heat dissipation coating.
Compared with the traditional heat dissipation coating, the preparation method of the carbon nanotube structure infrared radiation heat dissipation coating provided by the first to third embodiments of the invention; the surface temperature of the power device is greatly reduced, and the heat dissipation problem of components is effectively solved.
The preparation methods of the carbon nanotube structure infrared radiation heat dissipation coating provided in the first to third embodiments of the present invention are respectively tested, and the results of the tests on the infrared radiance, the square resistance and the thermal conductivity are as follows:
the determination results show that: the infrared radiation heat dissipation coating with the carbon nanotube structure prepared by the method greatly makes up the adverse effect of a thick tube diameter on the performance of the coating, and has dominant advantages caused by the structural factors, so that the infrared radiance, the square resistance and the heat conductivity of the coating are obviously improved.
Claims (8)
1. A preparation method of an infrared radiation heat dissipation coating with a carbon nano tube structure is characterized by comprising the following steps;
s1, preparing raw materials: 12-18 parts of nano graphite, 4-10 parts of silicon carbide infrared radiation powder, 5-15 parts of a powder dispersing agent, 15-25 parts of silicon dioxide, 30-40 parts of a binder, 6-10 parts of a high thermal conductive filler, 50-200 parts of waterborne polyurethane, 0.5-2 parts of a defoaming agent, 0.8-1.5 parts of an anti-settling agent, 0.2-0.7 part of a wetting agent, 1-4 parts of a film forming aid, 0.5-1 part of a leveling agent, 2-10 parts of an antifreeze agent, 0.5-1 part of a coating dispersing agent and 25-45 parts of water;
s2, ultrasonically dispersing the nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent in a pulverizer, taking out the pulverized nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent after pulverization, putting the pulverized nano graphite, the silicon carbide infrared radiation powder, the water and the powder dispersing agent into a reaction kettle, and mixing and stirring the mixture to obtain uniformly dispersed filler dispersion liquid;
s3, stirring and mixing the waterborne polyurethane and the film-forming assistant in parts by weight, mixing for 20-30min to dissolve, and mixing with the filler dispersion liquid;
and S4, adding the binder, the defoaming agent, the high-thermal-conductivity filler, the wetting agent, the leveling agent and the antifreeze agent into the mixture S3, and continuously stirring at a high speed for 10-20min to obtain the infrared radiation heat dissipation coating.
2. A preparation method of an infrared radiation heat dissipation coating with a carbon nano tube structure is characterized in that in S1, raw materials are prepared: 14-16 parts of nano graphite, 5-8 parts of silicon carbide infrared radiation powder, 7-12 parts of a powder dispersing agent, 18-22 parts of silicon dioxide, 35-38 parts of a binder, 7-9 parts of a high thermal conductive filler, 70-150 parts of waterborne polyurethane, 0.8-1.5 parts of a defoaming agent, 1-1.2 parts of an anti-settling agent, 0.4-0.5 part of a wetting agent, 2-4 parts of a film forming aid, 0.6-0.8 part of a flatting agent, 4-8 parts of an antifreeze agent, 0.7-1 part of a coating dispersing agent and 30-40 parts of water.
3. A preparation method of an infrared radiation heat dissipation coating with a carbon nano tube structure is characterized in that in S1, raw materials are prepared: 15 parts of nano graphite, 6 parts of silicon carbide infrared radiation powder, 10 parts of powder dispersing agent, 18 parts of silicon dioxide, 36 parts of binder, 8 parts of high-thermal-conductivity filler, 80 parts of waterborne polyurethane, 1.5 parts of defoaming agent, 1 part of anti-settling agent, 0.5 part of wetting agent, 3 parts of film-forming assistant, 0.7 part of leveling agent, 6 parts of antifreeze agent, 0.8 part of coating dispersing agent and 35 parts of water.
4. The preparation method of the carbon nanotube structure infrared radiation heat dissipation coating is characterized in that the dispersing agent in S1 is ultrasonically dispersed in a pulverizer for 5-8min, and the stirring time of a reaction kettle is 30-50 min.
5. The preparation method of the carbon nanotube structure infrared radiation heat dissipation coating is characterized in that the dispersing agent in S2 is ultrasonically dispersed in a pulverizer for 5-8min, and the stirring time of a reaction kettle is 30-50 min.
6. The preparation method of the carbon nanotube structure infrared radiation heat dissipation coating is characterized in that the binder is selected from one or more of polyether sulfone resin (PES), polyamide-imide resin (PAI), polyamide resin (PA) and polyphenylene sulfide resin (PPS).
7. The preparation method of the carbon nanotube structure infrared radiation heat dissipation coating is characterized in that the high-thermal-conductivity filler is selected from inorganic high-temperature-resistant pigments such as carbon black and iron oxide red or organic high-temperature-resistant pigments such as phthalocyanine blue.
8. The preparation method of the carbon nanotube structure infrared radiation heat dissipation coating is characterized in that the dispersing agent is polyacrylamide or guar gum.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116535959A (en) * | 2023-05-31 | 2023-08-04 | 湖南格仑科技有限公司 | Preparation method of infrared radiation heat dissipation coating with carbon nano tube structure |
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Application publication date: 20210319 |