CN111171708A - High-temperature-resistant graphene rapid heat-dissipation anticorrosive paint and preparation method and application thereof - Google Patents
High-temperature-resistant graphene rapid heat-dissipation anticorrosive paint and preparation method and application thereof Download PDFInfo
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- 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
- C09D181/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon only; Coating compositions based on polysulfones; Coating compositions based on derivatives of such polymers
- C09D181/06—Polysulfones; Polyethersulfones
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- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09D179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- 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
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C08L2312/00—Crosslinking
Abstract
The invention discloses a high-temperature-resistant graphene rapid heat dissipation anticorrosive paint which comprises the following components in percentage by weight: 60-80% of high polymer resin material; 5-10% of graphene; 0.1-5% of carbon nano tube; 0.1 to 5 percent of black powder; 0.1 to 5 percent of silicon carbide; 0-5% of glass powder; 10-20% of mica powder; a preparation method of a high-temperature-resistant graphene rapid heat dissipation anticorrosive paint comprises the following steps: weighing the raw materials according to the formula proportion, adding the high polymer resin material, the carbon nano tube, the black toner, the silicon carbide and the mica powder into a stirring cylinder, and dispersing at high speed to obtain a finished product slurry, wherein the glass powder is added according to the requirement; the application of the high-temperature-resistant graphene rapid heat dissipation anticorrosive coating is applied to surface spraying of a dryer, or an air conditioner electric auxiliary heating PTC, or a motor, or an automobile or motorcycle engine; the invention has excellent corrosion resistance and high temperature resistance, and can quickly conduct heat and quickly dissipate heat.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a high-temperature-resistant graphene rapid heat dissipation anticorrosive coating as well as a preparation method and application thereof.
Background
The existing high-temperature resistant coating only has the high-temperature resistance of a body, but cannot completely protect sprayed products, such as electric appliances, motors, engines and the like, and as the working time of the machines is increased, the heat brought by the work of the machines is gradually increased, so that the heat cannot be quickly dissipated, the working efficiency of the machines can be influenced, even the machines are partially or completely damaged, and the service life of the machines is shortened; the existing high-temperature resistant coating is used in a long-time high-temperature scene, the situations of peculiar smell, collapse and the like can be generated, the effect of continuously protecting the product can not be provided, and the service life of the product is further influenced.
Moreover, in some occasions, excessive heating of the motor is not allowed, such as medical instruments and high-precision testing equipment, or the use effect of the motor is seriously influenced.
Therefore, a high-temperature resistant graphene rapid heat dissipation anticorrosive coating is needed in the technical field to solve the above problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the high-temperature-resistant graphene rapid heat dissipation anticorrosive coating which has the functions of rapid heat conduction and rapid heat dissipation, so that a heating electric appliance has better heat dissipation efficiency, a heating part has lower service temperature, and the service life of the heating part is prolonged; has no peculiar smell and is not easy to collapse when in use, thereby providing excellent protection effect.
The invention also aims to provide a preparation method of the high-temperature-resistant graphene rapid heat dissipation anticorrosive paint, so as to prepare a finished slurry, and the preparation method has the advantages of simple process, convenience in preparation and easiness in popularization.
The third purpose of the invention is to provide the application of the high-temperature-resistant graphene rapid heat dissipation anticorrosive coating, which has the advantages of no peculiar smell, difficulty in collapse and no limitation of a spraying mode during use.
The purpose of the invention is realized by the following technical scheme: the high-temperature-resistant graphene rapid heat dissipation anticorrosive paint comprises the following components in percentage by weight:
preferably, the high-temperature-resistant graphene rapid heat dissipation anticorrosive paint comprises the following components in percentage by weight:
more preferably, the weight percentage of the polymer resin material is 60-75%.
More preferably, the weight percentage of the polymer resin material is 75-80%.
Preferably, the polymer resin material is any one of solvent-type organic silicon, water-based PES & Teflon or water-based PAI & Teflon, and the solvent-type organic silicon, the water-based PES & Teflon or the water-based PAI & Teflon is a film forming substance, so that the adhesion and temperature resistance performance is improved; the aqueous PES & Teflon or aqueous PAI & Teflon system is a high-temperature self-crosslinking reaction to form a relatively stable molecule which is bonded and crosslinked into a network structure, so that macromolecules are converted into a three-dimensional network structure, and the strength, heat resistance, wear resistance and solvent resistance of the system are improved.
Preferably, the water-based PES & Teflon is a composite material of water-based PES resin and polytetrafluoroethylene, the mixing ratio of the water-based PES resin to the polytetrafluoroethylene is 4:1-1:1, the water-based PES & Teflon has the characteristics of environmental protection and small smell, the film forming mechanism is hot melting, the corrosion resistance is improved, the prepared coating is light in color, and the coating with light color requirement can only be selected from the water-based PES & Teflon.
Preferably, the waterborne PAI & Teflon is a composite material of waterborne polyamide imide resin and polytetrafluoroethylene, the mixing ratio of the waterborne polyamide imide resin to the polytetrafluoroethylene is 4:1-1:1, the waterborne PAI & Teflon has the characteristics of environmental protection and small smell, the film forming mechanism is thermosetting, the adhesion, temperature resistance and hardness are improved, and the prepared paint is dark in color.
Preferably, the powder particle size of the graphene, the black powder, the glass powder and the mica powder is less than or equal to 15um, so that the spraying effect is better, the smoothness and the smoothness of the product surface formed by the coating are improved, and mass points cannot be formed on the surface.
More preferably, the powder particle size of the graphene, the black powder, the glass powder and the mica powder is 1-5 um.
Preferably, when the coating resists the temperature of 450-500 ℃, 0.1-5% of glass powder is required to be added, the melting point of the glass powder is 400-420 ℃, the glass powder is largely decomposed when being heated, the glass powder with low melting point is melted in the temperature range of 450-500 ℃ to play a role of bonding, so that a complete, compact and high-temperature-resistant coating with good adhesive force is formed, and the high temperature resistance is improved; meanwhile, the glass powder has good affinity and strong steric hindrance capability, can be conveniently dispersed in the coating, can increase the fullness of the coating after film forming, and provides good scratch resistance.
Preferably, the black powder is carbon black or copper-chromium black, and when the black powder resists the temperature of 500 ℃, the black powder is copper-chromium black.
A preparation method of a high-temperature-resistant graphene rapid heat dissipation anticorrosive paint comprises the following steps:
weighing the raw materials according to the formula proportion, adding the high polymer resin material into a stirring cylinder, starting a machine to stir at the rotating speed of 500-800 rpm, stirring for 20-30 minutes, fully mixing, and sequentially adding graphene, carbon nano tubes, black toner, silicon carbide and mica powder when the temperature of the coating is required to be less than 450 ℃; when the coating is required to resist the temperature of 450-500 ℃, adding the graphene, the carbon nano tube, the black powder, the silicon carbide, the glass powder and the mica powder in sequence, increasing the rotating speed to 1200 rpm, dispersing at a high speed, and dispersing for 25-35 minutes to obtain the finished slurry.
The application of the high-temperature-resistant graphene rapid heat dissipation anticorrosive coating is applied to surface spraying of a dryer, or an air conditioner electric auxiliary heating PTC, or a motor, or an automobile or motorcycle engine.
Preferably, the spraying thickness of the high-temperature-resistant graphene rapid heat dissipation anticorrosive paint is 8-25um, and the service life of 1-5 years can be prolonged.
Has the advantages that: the invention can ensure that the coating can resist the temperature of 260-500 ℃, can ensure the normal use of the coating in a high-temperature scene, can not generate peculiar smell and collapse, can provide the protection function for sprayed products, has excellent salt mist resistance, weather resistance and boiling resistance, and simultaneously has excellent corrosion resistance. Besides, the slurry has the most obvious characteristic of heat dissipation effect of the coating, is different from the traditional coating, can quickly conduct or radiate heat on the surface of a heating electric appliance except high temperature resistance and corrosion resistance, has the heat conductivity of 500-1200W/(m.K), enables the heating efficiency of the heating electric appliance to be better, and actively protects high-temperature components to have longer service life. The invention is not limited by the spraying mode, and the using effect of the invention is not influenced no matter the mode of hand spraying or robot spraying, reciprocating machine and automatic line.
Detailed Description
The following detailed description is to be read in connection with specific embodiments, but it should be understood that the scope of the invention is not limited to the specific embodiments.
Example 1
The high-temperature-resistant graphene rapid heat dissipation anticorrosive paint comprises the following components in percentage by weight:
the graphene has the functions of rapid heat conduction, corrosion resistance and electric conduction, and can be compounded with a high polymer resin material, so that the heat dissipation, corrosion resistance and antistatic performance of the polymer can be remarkably improved; the carbon nano tubes are uniformly distributed and attached to the upper surface and the lower surface of the high polymer resin material, and can enhance the quick heat dissipation capability of the coating; graphene and mica powder can form an efficient barrier effect in a coating film, corrosive substances are prevented from diffusing, permeating and migrating in the coating film, namely shielding and labyrinth effects, the time of penetrating the coating film is prolonged to 3 times, and therefore the performance of the anticorrosive coating is greatly improved.
The paint prepared by the embodiment is resistant to the temperature below 450 ℃, the high polymer resin material is water-based PES & Teflon which is a film forming material and has the characteristics of environmental protection and small smell, the film forming mechanism is hot melting, the corrosion resistance is improved, the prepared paint is light in color, and the paint with light color requirement can only be selected from the water-based PES & Teflon; the aqueous PES & Teflon is subjected to high-temperature self-crosslinking reaction to form relatively stable molecules which are bonded and crosslinked into a network structure, so that macromolecules are converted into a three-dimensional network structure, and the performances of strength, heat resistance, wear resistance and solvent resistance are improved.
The water-based PES & Teflon is a composite material of water-based polyether sulfone resin and polytetrafluoroethylene, the weight percentage of the water-based polyether sulfone resin is 40%, the weight percentage of the polytetrafluoroethylene is 20%, and the mixing ratio of the water-based polyether sulfone resin to the polytetrafluoroethylene is 2: 1.
In this embodiment, the powder particle size of the graphene, the black toner, the glass powder and the mica powder is 15 um.
A preparation method of a high-temperature-resistant graphene rapid heat dissipation anticorrosive paint comprises the following steps:
weighing the raw materials according to the formula proportion, adding the high polymer resin material into a stirring cylinder, starting a machine to stir at the rotating speed of 800 revolutions per minute, stirring for 20 minutes, fully mixing, sequentially adding graphene, carbon nano tubes, black toner, silicon carbide and mica powder, increasing the rotating speed to 1200 revolutions per minute, dispersing at a high speed for 25 minutes to obtain the finished slurry, wherein the solid content of the finished slurry is 25%, and the color of the finished slurry is light grey or gray.
The application of the high-temperature-resistant graphene rapid heat dissipation anticorrosive paint is applied to surface spraying of a dryer, and the heat conductivity reaches 500-1200W/(m.K).
The spraying thickness that high temperature resistant graphite alkene heat dissipation anticorrosive paint used is 8um fast, can prolong 1 year's life.
The following table 1 shows the results of the salt spray resistance, weather resistance, boiling resistance, corrosion resistance and high temperature resistance test of this example:
TABLE 1
Example 2
The high-temperature-resistant graphene rapid heat dissipation anticorrosive paint comprises the following components in percentage by weight:
the graphene has the functions of rapid heat conduction, corrosion resistance and electric conduction, and can be compounded with a high polymer resin material, so that the heat dissipation, corrosion resistance and antistatic performance of the polymer can be remarkably improved; the carbon nano tubes are uniformly distributed and attached to the upper surface and the lower surface of the high polymer resin material, and can enhance the quick heat dissipation capability of the coating; graphene and mica powder can form an efficient barrier effect in a coating film, corrosive substances are prevented from diffusing, permeating and migrating in the coating film, namely shielding and labyrinth effects, the time of penetrating the coating film is prolonged to 3 times, and therefore the performance of the anticorrosive coating is greatly improved.
The paint prepared by the embodiment is resistant to the temperature of more than 450 ℃, the high polymer resin material is solvent-type organic silicon, the solvent-type organic silicon is a film forming material, the temperature resistant range is wider, and only the solvent-type organic silicon can be selected as a carrier when the paint is resistant to the temperature of more than 400 ℃; the solvent-type organic silicon is subjected to high-temperature self-crosslinking reaction to form relatively stable molecules which are bonded and crosslinked into a network structure, so that macromolecules are converted into a three-dimensional network structure, and the performances of strength, heat resistance, wear resistance and solvent resistance are improved; the black powder is carbon black or copper-chromium black, when the black powder resists the temperature of 500 ℃, the black powder is copper-chromium black, when the black powder resists the temperature of 450-500 ℃, the melting point of the glass powder is 400-420 ℃, the glass powder has good affinity and stronger steric hindrance capability, can be conveniently dispersed in the coating, and can increase the fullness of the coating after film forming.
In this embodiment, the powder particle size of the graphene, the black toner, the glass powder and the mica powder is 5 um.
A preparation method of a high-temperature-resistant graphene rapid heat dissipation anticorrosive paint comprises the following steps:
weighing the raw materials according to the formula proportion, adding the high polymer resin material into a stirring cylinder, starting a machine to stir at the rotating speed of 500 revolutions per minute, stirring for 30 minutes, fully mixing, sequentially adding graphene, carbon nano tubes, black toner, silicon carbide, glass powder and mica powder, increasing the rotating speed to 1200 revolutions per minute, dispersing at a high speed for 35 minutes to obtain the finished slurry, wherein the solid content of the finished slurry is 60%, and the color is dark gray or black.
The application of the high-temperature-resistant graphene rapid heat dissipation anticorrosive coating is applied to surface spraying of air conditioner electric auxiliary heating PTC, and the heat conductivity reaches 1000W/(m.K).
The spraying thickness of the high-temperature-resistant graphene rapid heat dissipation anticorrosive paint is 18um, and the service life of 3 years can be prolonged.
The following table 2 shows the results of the salt spray resistance, weather resistance, boiling resistance, corrosion resistance and high temperature resistance test of this example:
TABLE 2
Example 3
The high-temperature-resistant graphene rapid heat dissipation anticorrosive paint comprises the following components in percentage by weight:
the graphene has the functions of rapid heat conduction, corrosion resistance and electric conduction, and can be compounded with a high polymer resin material, so that the heat dissipation, corrosion resistance and antistatic performance of the polymer can be remarkably improved; the carbon nano tubes are uniformly distributed and attached to the upper surface and the lower surface of the high polymer resin material, and can enhance the quick heat dissipation capability of the coating; graphene and mica powder can form an efficient barrier effect in the paint film, and prevent corrosive substances from diffusing, permeating and migrating in the paint film, namely, shielding and labyrinth effects, and the time for penetrating the paint film is prolonged to 3 times, so that the performance of the anticorrosive paint is greatly improved.
The paint prepared in the embodiment can resist the temperature of below 450 ℃, the high polymer resin material is water-based PAI & Teflon which is a film forming material and has the characteristics of environmental protection and small smell, the film forming mechanism is thermosetting, the adhesion, temperature resistance and hardness are improved, and the prepared paint is dark in color; the aqueous PAI and Teflon system is a high-temperature self-crosslinking reaction to form relatively stable molecules which are bonded and crosslinked into a network structure, so that macromolecules are converted into a three-dimensional network structure, and the performances of strength, heat resistance, wear resistance and solvent resistance are improved.
The waterborne PAI & Teflon is a composite material of waterborne polyamideimide resin and polytetrafluoroethylene, wherein the weight percentage of the waterborne polyamideimide resin is 36%, the weight percentage of the polytetrafluoroethylene is 36%, and the mixing ratio of the waterborne polyamideimide resin to the polytetrafluoroethylene is 1: 1.
In this embodiment, the powder particle size of the graphene, the black toner, the glass powder and the mica powder is 1 um.
A preparation method of a high-temperature-resistant graphene rapid heat dissipation anticorrosive paint comprises the following steps:
weighing the raw materials according to the formula proportion, adding the high polymer resin material into a stirring cylinder, starting a machine to stir at the rotating speed of 650 rpm, stirring for 25 minutes, fully mixing, sequentially adding graphene, carbon nano tubes, black toner, silicon carbide and mica powder, increasing the rotating speed to 1350 rpm, dispersing at a high speed for 30 minutes to obtain the finished slurry, wherein the solid content of the finished slurry is 45%, and the color of the finished slurry is dark gray or black.
The application of the high-temperature-resistant graphene rapid heat dissipation anticorrosive coating is applied to surface spraying of a motorcycle engine, and the heat conductivity reaches 1100W/(m.K).
The spraying thickness that high temperature resistant graphite alkene heat dissipation anticorrosive paint used is 25um fast, can prolong 5 years's life.
The following table 3 shows the results of the salt spray resistance, weather resistance, boiling resistance, corrosion resistance and high temperature resistance test of this example:
TABLE 3
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention.
Claims (10)
1. The high-temperature-resistant graphene rapid heat-dissipation anticorrosive paint is characterized by comprising the following components in percentage by weight:
2. the high-temperature-resistant graphene rapid heat dissipation and corrosion prevention coating as claimed in claim 1, wherein the polymer resin material is any one of solvent-based silicone, water-based PES & Teflon or water-based PAI & Teflon system.
3. The high-temperature-resistant graphene rapid heat-dissipation anticorrosive paint as claimed in claim 2, wherein the water-based PES & Teflon is a composite material of water-based polyethersulfone resin and polytetrafluoroethylene, and the mixing ratio of the water-based polyethersulfone resin to the polytetrafluoroethylene is 4:1-1: 1.
4. The high-temperature-resistant graphene rapid heat-dissipation anticorrosive paint as claimed in claim 2, wherein the water-based PAI & Teflon is a composite material of water-based polyamideimide resin and polytetrafluoroethylene, and the mixing ratio of the water-based polyamideimide resin to the polytetrafluoroethylene is 4:1-1: 1.
5. The high-temperature-resistant graphene rapid heat-dissipation anticorrosive paint as claimed in claim 1, wherein the powder particle size of graphene, black toner, glass powder and mica powder is less than or equal to 15 um.
6. The high-temperature-resistant graphene rapid heat-dissipation anticorrosive coating as claimed in claim 1, wherein glass powder is added when the coating is resistant to 450-500 ℃, and the melting point of the glass powder is 400-420 ℃.
7. The high-temperature-resistant graphene rapid heat-dissipation anticorrosive paint as claimed in claim 1, wherein the black powder is carbon black or copper-chromium black, and when the paint is resistant to 500 ℃, the black powder is copper-chromium black.
8. A preparation method of a high-temperature-resistant graphene rapid heat dissipation anticorrosive paint is characterized by comprising the following steps:
weighing the raw materials according to the proportion of the formula selected according to any one of claims 1 to 7, adding the high molecular resin material into a stirring cylinder, starting a machine to stir at the rotating speed of 500-800 rpm, stirring for 20-30 minutes, fully mixing, and sequentially adding graphene, carbon nano tubes, black toner, silicon carbide and mica powder when the temperature of the coating is required to be less than 450 ℃; when the coating is required to resist the temperature of 450-500 ℃, adding the graphene, the carbon nano tube, the black powder, the silicon carbide, the glass powder and the mica powder in sequence, increasing the rotating speed to 1200 rpm, dispersing at a high speed, and dispersing for 25-35 minutes to obtain the finished slurry.
9. The application of the high-temperature-resistant graphene rapid heat dissipation anticorrosive paint is characterized in that the high-temperature-resistant graphene rapid heat dissipation anticorrosive paint is applied to surface spraying of a dryer, or an air conditioner electric auxiliary heating PTC, or a motor, or an automobile or motorcycle engine.
10. The application of the high-temperature-resistant graphene rapid heat dissipation anticorrosive paint as claimed in claim 9, wherein the spraying thickness of the high-temperature-resistant graphene rapid heat dissipation anticorrosive paint is 8-25 um.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010109647.3A CN111171708A (en) | 2020-02-22 | 2020-02-22 | High-temperature-resistant graphene rapid heat-dissipation anticorrosive paint and preparation method and application thereof |
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| CN116265543A (en) * | 2021-12-16 | 2023-06-20 | 沈阳化工研究院有限公司 | Water-based nano modified temperature-resistant heavy-duty anticorrosive paint and preparation method thereof |
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