CN110734694A - aqueous cooling and heat dissipation coating based on nano carbon material and preparation method thereof - Google Patents
aqueous cooling and heat dissipation coating based on nano carbon material and preparation method thereof Download PDFInfo
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- C09D7/40—Additives
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Abstract
The invention provides aqueous cooling and heat dissipating paint based on a nano-carbon material, which comprises a component A and a component B, wherein the component A comprises, by weight, 20-40% of an aqueous polyurethane dispersion, 1-5% of a PVA binder, 0.5-1.5% of a nano-carbon material, 0.5-1.5% of an aqueous super-dispersant, 0.5-2.0% of a coupling agent, 10-30% of a nano-heat dissipating filler, 10-20% of other fillers, 0.1-1% of a thixotropic agent, 0.5-5% of other additives and the balance of deionized water, and the component B comprises a water-dispersible isocyanate curing agent, an alcohol ether solvent and deionized water, wherein the total weight of the component A is 100%.
Description
Technical Field
The invention belongs to the technical field of functional coatings, and particularly relates to water-based cooling and heat dissipation coatings based on nano carbon materials and a preparation method thereof.
Background
Regarding the problem of object heat dissipation, continuous high temperature makes the metal substrate of the radiator easy to oxidize and age, the metal oxidation and aging process is of the metal corrosion process, the continuous high temperature can also accelerate the durability and aging resistance of the substrate and the coating, not only the heat dissipation effect is lost, but also the interface thermal resistance is increased.
Disclosure of Invention
The invention aims to provide water-based cooling and heat dissipation coatings based on nano-carbon materials and a preparation method thereof, and aims to solve the problem that the heat dissipation effect of a common heat dissipation coating is not ideal.
In order to achieve the purpose, the invention adopts the following technical scheme:
the aspect of the invention provides nano-carbon material-based aqueous cooling and heat-dissipating paint, which comprises a component A and a component B, wherein,
the component A comprises the following components in percentage by weight, based on the total weight of the component A as 100 percent:
the component B comprises a water dispersible isocyanate curing agent, an alcohol ether solvent and deionized water.
In another aspect, the invention provides a preparation method of aqueous cooling and heat dissipation coatings based on nano carbon materials, which comprises the following steps:
weighing the components according to the formula of the nano-carbon material-based water-based cooling and heat-dissipating coating;
mixing half of deionized water, PVA binder, aqueous hyper-dispersant, coupling agent, part of other additives and nano carbon material powder serving as a component A in the formula, adding nano heat dissipation filler and other fillers after dispersion treatment, and continuously dispersing to obtain th dispersion slurry;
dispersing the aqueous polyurethane dispersion of the component A in the formula, the rest of other additives and the thixotropic agent until the slurry is in a uniform fluid state to obtain a component A;
and dispersing the water-dispersible isocyanate curing agent, the alcohol ether solvent and the deionized water of the component B until the slurry is in a uniform fluid state to obtain the component B.
The water-based cooling and heat-dissipating coating based on the nano-carbon material provided by the invention has the following advantages:
firstly, the nano-scale carbon material with high electric and thermal conductivity, high mechanical strength, high specific surface area and high chemical stability and the nano-scale heat dissipation filler are selected for compounding, so that the heat conduction and heat dissipation characteristics and the shielding effect of the paint film can be effectively enhanced theoretically. On the basis, the PVA binder, the coupling agent and the water-based hyper-dispersant have synergistic effect, so that the dispersion and wetting of the nano-scale carbon material and the nano-scale heat-dissipation filler are increased, and the dispersion stability of the coating is improved, thereby fully exerting the effect of enhancing the heat conduction and heat dissipation characteristics of the paint film by the nano-scale carbon material and the nano-scale heat-dissipation filler.
And secondly, the waterborne polyurethane paint film has high elasticity, good flexibility, high elastic modulus, excellent wear resistance and corrosion resistance, but has insufficient crosslinking density, low strength, poor heat resistance, insufficient adhesion to metal substrates, poor barrier property and other properties. The amine ester bond (-NH-COO) in the water-based polyurethane chain segment and the hydrophilic hydroxyl (-OH) of the PVA are compounded and modified by the water-based polyurethane dispersoid and the PVA binder to form an intermolecular hydrogen bond effect, so that the water-based polyurethane dispersion and the PVA binder have good compatibility, and the PVA has high strength and good valence barrier property, so that the compounded and modified polyurethane paint film has good mechanical property and thermal stability, and meanwhile, the adhesive force of the paint film to metal materials and the barrier property of the medium are enhanced.
In addition, the nano carbon material is also added, the nano heat dissipation filler is mixed with other fillers for use, and the nano heat dissipation filler is subjected to multiple modification. Specifically, the nano material has the advantages of special surface effect, small size effect, macroscopic quantum tunneling effect, high surface activity, good light absorption performance and the like besides the self functional characteristics. The nano modified water-based polyurethane composite material can be compounded with polyurethane to obviously improve the aging resistance, the wear resistance and the hardness of an anticorrosive polymer coating and the protective capability of a paint film, and can improve the mechanical strength, the thermal stability, the corrosion resistance, the aging resistance and the like by carrying out nano modification on the water-based polyurethane. The nanoscale heat dissipation filler and other fillers are mixed for use, and the two fillers are mutually synergistic, so that the formed paint film has the characteristics of high heat conduction, high radiation heat dissipation and corrosion and rust prevention.
In conclusion, the nano-carbon material-based water-based cooling and heat-dissipating coating provided by the invention has good heat dissipation performance and low VOC content.
According to the water-based cooling and heat dissipation coating based on the nano carbon material, the component A is obtained by sequentially mixing, dispersing and grinding raw materials, and the component B is obtained by sequentially mixing and dispersing the raw materials, so that the preparation method is simple and easy to control.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail in with reference to the following embodiments.
In the description of the present invention, it is to be understood that the terms "" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
The embodiment of the invention provides aqueous cooling and heat dissipation coatings based on nano-carbon materials, which comprise a component A and a component B, wherein,
the component A comprises the following components in percentage by weight, based on the total weight of the component A as 100 percent:
the component B comprises a water dispersible isocyanate curing agent, an alcohol ether solvent and deionized water.
The nano-carbon material-based aqueous cooling and heat-dissipating coating provided by the embodiment of the invention has the following advantages:
firstly, the nano-scale carbon material with high electric and thermal conductivity, high mechanical strength, high specific surface area and high chemical stability and the nano-scale heat dissipation filler are selected for compounding, so that the heat conduction and heat dissipation characteristics and the shielding effect of the paint film can be effectively enhanced theoretically. On the basis, the PVA binder, the coupling agent and the water-based hyper-dispersant have synergistic effect, so that the dispersion and wetting of the nano-scale carbon material and the nano-scale heat-dissipation filler are increased, and the dispersion stability of the coating is improved, thereby fully exerting the effect of enhancing the heat conduction and heat dissipation characteristics of the paint film by the nano-scale carbon material and the nano-scale heat-dissipation filler.
And secondly, the waterborne polyurethane paint film has high elasticity, good flexibility, high elastic modulus, excellent wear resistance and corrosion resistance, but has insufficient crosslinking density, low strength, poor heat resistance, insufficient adhesion to metal substrates, poor barrier property and other properties. The amine ester bond (-NH-COO) in the water-based polyurethane chain segment and the hydrophilic hydroxyl (-OH) of the PVA are compounded and modified by the water-based polyurethane dispersoid and the PVA binder to form an intermolecular hydrogen bond effect, so that the water-based polyurethane dispersion and the PVA binder have good compatibility, and the PVA has high strength and good valence barrier property, so that the compounded and modified polyurethane paint film has good mechanical property and thermal stability, and meanwhile, the adhesive force of the paint film to metal materials and the barrier property of the medium are enhanced.
In addition, the embodiment of the invention also adds the nano carbon material, mixes the nano heat dissipation filler with other fillers for use, and carries out multiple modification on the nano heat dissipation filler. Specifically, the nano material has the advantages of special surface effect, small size effect, macroscopic quantum tunneling effect, high surface activity, good light absorption performance and the like besides the self functional characteristics. The nano modified water-based polyurethane composite material can be compounded with polyurethane to obviously improve the aging resistance, the wear resistance and the hardness of an anticorrosive polymer coating and the protective capability of a paint film, and can improve the mechanical strength, the thermal stability, the corrosion resistance, the aging resistance and the like by carrying out nano modification on the water-based polyurethane. The nanoscale heat dissipation filler and other fillers are mixed for use, and the two fillers are mutually synergistic, so that the formed paint film has the characteristics of high heat conduction, high radiation heat dissipation and corrosion and rust prevention.
In conclusion, the nano-carbon material-based aqueous cooling and heat-dissipating coating provided by the embodiment of the invention has good heat dissipation performance and low VOC content.
Specifically, the A component is used for curing to form a film. Wherein the content of the first and second substances,
the waterborne polyurethane dispersion in the embodiment of the invention is at least selected from aliphatic waterborne polyurethane dispersion, aromatic waterborne polyurethane dispersion and waterborne hydroxyl acrylic emulsion, preferably, the waterborne polyurethane dispersion is aliphatic waterborne polyurethane dispersion and waterborne hydroxyl acrylic dispersion, in the preferred waterborne polyurethane dispersion, the aliphatic waterborne polyurethane dispersion is high-performance adhesive, has good mechanical property, chemical resistance, wear resistance and weather resistance, the waterborne hydroxyl acrylic emulsion (dispersion) has lower molecular weight, higher hydroxyl functionality, smaller particle size, high crosslinking degree of a paint film and excellent comprehensive performance, and has excellent chemical resistance and weather resistance and good salt spray resistance when being used in a two-component system .
In the embodiment of the invention, the PVA binder is a water-soluble polyvinyl alcohol resin binder, , the PVA binder is compounded with the aqueous polyurethane dispersion to improve the comprehensive properties of paint film adhesion, flexibility, mechanical strength, high temperature resistance and the like, , the PVA binder also has the functions of an emulsifier and a dispersant, and PVA long chains in the prepared dispersion slurry have good surface treatment functions on the nanoscale heat-dissipation filler, the nanoscale carbon material, particularly graphene sheet layers, so that the nanoscale heat-dissipation filler, the nanoscale carbon material, particularly graphene, are uniformly dispersed in the slurry, the nanoscale heat-dissipation filler and the nanoscale carbon material can be prevented from agglomerating, and the stability of the nanoscale heat-dissipation filler and the nanoscale carbon material in the paint is improved.
In the embodiment of the invention, the nano carbon material is at least selected from graphene, carbon nano tubes, carbon nano spheres and carbon nano fibers, wherein the carbon nano materials are high-thermal-conductivity high polymer materials and can enhance the heat conduction and heat dissipation characteristics of a paint film, the thermal conductivity of the graphene is 5000W/m.K, the thermal conductivity of the carbon nano tubes is 1750-5800W/m.K (axial direction), the thermal conductivity of the carbon nano spheres is 6-174W/m.K, and the thermal conductivity of the carbon nano fibers is 100W/m.K, although the carbon nano materials have good heat conduction and heat dissipation characteristics, the carbon nano materials are difficult to disperse and easy to agglomerate, and corners have good active functional groups, so that the defects of high reaction activity and the like exist, such as the defects not only can affect the exertion of the effect, but also can affect the overall performance of the whole paint system, the embodiment of the invention adds a binder, the functional groups of the binder can react with the corner functional groups of the carbon nano material, so that the PVA can improve the dispersivity of the carbon nano carbon material, and the dispersibility of the PVA can be improved by 355.5%, and the specific weight of the carbon nano carbon material can be improved by 355.5%, and the weight of the PVA can be provided by the invention.
In the embodiment of the invention, the waterborne hyper-dispersant is special surfactants, preferably at least of the waterborne hyper-dispersant is selected from polyether waterborne hyper-dispersant, polyacrylic waterborne hyper-dispersant and polyolefin waterborne hyper-dispersant, preferably the waterborne hyper-dispersant is a block copolymer with a plurality of anchor groups and solvation chains in the molecule, the anchor group head coats nano-scale heat dissipation filler particles, the block copolymer of head is wound and adsorbed with waterborne polyurethane dispersion resin, which is beneficial to improving the storage stability of the coating, the waterborne hyper-dispersant can coat the surface of the nano-carbon material and synergistically modify the surface of the nano-carbon material, and particularly, the waterborne hyper-dispersant can synergistically combine with the nano-carbon material such as graphene particle sheets with large pi bonds with electric activity and buffering capacity, reduce the surface energy of the nano-carbon material, reduce the hard agglomeration of the nano-carbon material, improve the lubricating property and stability of the coating, and simultaneously, the nano-carbon material can be efficiently dispersed in water under the action of the waterborne hyper-dispersant, the waterborne hyper-dispersant is , the stability of the nano-carbon material is improved, the super-dispersant is , the nano-carbon material, the super-dispersant is excellent in the performance of 0.5%, the waterborne hyper-dispersant is excellent, the nano-carbon material, the super-dispersant is provided, the super-dispersant is excellent in the nano-dispersant, the specific example, the nano-dispersant is provided, the nano-dispersant is excellent in the nano-dispersion performance of the nano-carbon material, the nano-dispersant, the super-dispersant is provided, the super-dispersant is excellent in the super-dispersant, the super-dispersant is 0.
In the embodiment of the invention, the active functional group of the coupling agent can improve the surface performance of the nano-scale carbon material, and increases the wetting property and the hydrophilicity of the nano-scale carbon material, preferred coupling agents also have a modification effect, so that the nano-scale carbon material such as graphene can be better dispersed in a coating resin system, preferably, the coupling agent is at least selected from titanate coupling agents, polysiloxane coupling agents, complex acid ester coupling agents and aluminate coupling agents, and the coupling agent provides a third guarantee for the nano-scale carbon material to exert the performance of the nano-scale carbon material.
Under the combined action of the PVA binder, the aqueous hyper-dispersant and the coupling agent, the nanoscale carbon material effectively overcomes the defects of the nanoscale carbon material, and really realizes the good heat conduction and heat dissipation characteristics of the nanoscale carbon material.
In the embodiment of the invention, the paint film contains two filler components, namely a nanoscale heat dissipation filler and other fillers, wherein the two fillers are mutually cooperated to endow the formed paint film with the characteristics of high heat conduction and high radiation heat dissipation and the characteristics of corrosion prevention and rust prevention, wherein the nanoscale heat dissipation filler is used as a base material and is at least of nanoscale materials selected from spinel pigments, aluminum nitride, aluminum oxide, silicon nitride, barium titanate, cerium dioxide and the like.
The other fillers are at least selected from barium sulfate, talcum powder, wollastonite powder, silica micropowder, mica powder and heavy calcium powder, wherein the barium sulfate is preferably superfine barium sulfate, the wollastonite powder is preferably superfine wollastonite powder, the talcum powder is preferably superfine talcum powder, and the heavy calcium powder is preferably superfine heavy calcium powder.
Preferably, the thixotropic agent is at least selected from the group consisting of an aqueous organically modified bentonite thixotropic agent, a nano-scale fumed silica thixotropic agent, an attapulgite thixotropic agent, a polyamide wax emulsion and a polyethylene wax emulsion.
The other auxiliary agents include, but are not limited to, or a combination of surfactants, wetting agents, pH regulators, rheological additives, film forming aids, corrosion and mildew inhibitors and high boiling point alcohol ether solvents.
In the embodiment of the invention, the fineness of the component A is 10-30 mu m, the viscosity value of a coating with four cups is 30-80s, and the pH value is 8.0-9.0, the fineness of the component A is 10-30 mu m, the component A is suitable for the basic characteristics of the paint, and overlarge particles influence the compactness, adhesion and flatness of a paint film.
In the component B, preferably, the water-dispersible isocyanate curing agent is selected from water-dispersible diphenylmethane diisocyanate (abbreviated as MDI, mainly used for synthesizing polyurethane adhesives and sealants), water-dispersible toluene diisocyanate (abbreviated as TDI, mainly used for polyurethane foams, coatings, adhesives and the like), water-dispersible isophorone diisocyanate (abbreviated as IPDI, used for polyurethane adhesives and having excellent light stability and chemical stability resistance), water-dispersible dicyclohexylmethane diisocyanate (HMDI), and at least of water-dispersible Hexamethylene Diisocyanate (HDI). in the preferred water-dispersible isocyanate curing agent, IPDI type isocyanate has an aliphatic cyclic structure, and the synthesized curing agent film has high drying speed, high hardness and excellent abrasion resistance and chemical resistance, HDI type isocyanate has a long methylene chain, synthesized curing agent has low viscosity, is easily dispersed by a polyol component, has good flexibility, has good leveling property, and good scratch resistance due to good reaction between a water-dispersible resin and a high concentration of propylene glycol ether, and propylene glycol ether.
In the embodiment of the present invention, the weight ratio of the water-dispersible isocyanate curing agent, the alcohol ether solvent and the deionized water is preferably 5:2: 3.
The nano-carbon material-based aqueous cooling and heat-dissipating coating provided by the embodiment of the invention can be prepared by the following method.
In another aspect, the embodiment of the present invention provides a preparation method of aqueous cooling and heat dissipation coatings based on nanocarbon materials, comprising the following steps:
s01, weighing the components according to the formula of the nano-carbon material-based water-based cooling and heat dissipation coating.
The formulation and preferred conditions of the nano-carbon material-based aqueous cooling and heat dissipating coating are as described above, and are not described herein again for brevity.
S02, mixing half amount of deionized water , PVA binder, water-based hyper-dispersant, coupling agent, part of other auxiliary agents and nano carbon material powder, adding nano heat dissipation filler and other fillers after dispersion treatment, continuing dispersion to obtain th dispersion slurry, and grinding the th dispersion slurry by adopting a nano grinder to obtain the grinding slurry.
Preferably, half amount of deionized water , PVA binder, water-based hyper-dispersant, coupling agent, part of other additives, nano carbon material powder of the formula A are added into a dispersion cylinder and dispersed at high speed for 20-30 minutes, nano functional heat dissipation filler and other fillers are added and dispersed at high speed for 15-20 minutes, then the dispersion slurry is connected and introduced into a nano grinder and ground at high speed for 30 minutes to prepare grinding slurry, the fineness of the grinding slurry is tested to be lower than 25 um., in the embodiment of the invention, the medium-speed dispersion speed is 800r/min, the high-speed dispersion speed is 1500r/min, and the high-speed grinding speed is 1500 r/min.
S03, dispersing the aqueous polyurethane dispersion of the component A in the formula, the rest of the auxiliary agents and the thixotropic agent until the slurry is in a uniform fluid state to obtain the component A.
And (3) guiding the ground slurry to a dispersion cylinder, adding the aqueous polyurethane dispersion, the rest of other auxiliary agents, deionized water and a thixotropic agent, dispersing for 10-15 minutes at medium speed until the slurry is in a uniform fluid state, and adjusting, sampling and detecting that the product reaches the preset fineness, viscosity and pH value to obtain the component A. In the embodiment of the invention, the medium-speed dispersion speed is 600-800r/min, and the high-speed dispersion speed is 1000-1500 r/min.
S04, dispersing the water-dispersible isocyanate curing agent, the alcohol ether solvent and the deionized water of the component B until the slurry is in a uniform fluid state to obtain a component B.
And (3) adding the water dispersible isocyanate curing agent, the alcohol ether solvent and the deionized water of the component B into a dispersion cylinder, and dispersing at a high speed for 15 minutes until the slurry is in a uniform fluid state to obtain the component B. In the embodiment of the invention, the speed of the high-speed dispersion is 1000-1500 r/min.
According to the water-based cooling and heat dissipation coating based on the nano carbon material provided by the embodiment of the invention, the component A is obtained by sequentially mixing, dispersing and grinding raw materials, and the component B is obtained by sequentially mixing and dispersing raw materials, so that the preparation method is simple and easy to control.
The following description will be given with reference to specific examples.
Example 1
aqueous cooling and heat dissipating coating based on nano carbon materials, the formulation components of which are shown in Table 1, example 1.
The preparation method of the water-based anticorrosive heat-dissipation coating based on the nano-scale heat-dissipation filler comprises the following steps:
according to the formula of the nano-carbon material-based water-based cooling and heat dissipating coating described in example 1 in table 1, half of deionized water , 25 parts of PVA binder, 1 part of aqueous super dispersant, 1 part of coupling agent, 1 part of nano-carbon material powder, and part of other additives in the formula are added into a dispersion cylinder, stirred at a high speed for 20-30 minutes, then 20 parts of nano-scale heat dissipating filler and 15 parts of other fillers are added, and part of thixotropic agent is added until the viscosity of the coating is suitable for production dispersion (visual inspection), and dispersed at a high speed for 10 minutes, then the dispersion slurry is connected and introduced into a nano-grinder, ground at a high speed for 30 minutes, and the fineness of the ground slurry is tested to be lower than 30 micrometers.
And (3) guiding the ground slurry to a dispersion cylinder, adding the aqueous polyurethane dispersion, the rest of the auxiliary agent, deionized water and the rest of the thixotropic agent, dispersing for 15-20 minutes at a medium speed, sampling, detecting and adjusting the product to reach the preset fineness, viscosity and PH value to obtain the component A.
And (3) adding 50 parts of water-dispersible isocyanate curing agent, 20 parts of alcohol ether solvent and 30 parts of deionized water of the component B into another dispersing cylinder, and dispersing for 15 minutes at high speed until the slurry is in a uniform fluid state to obtain the component B.
Example 2
aqueous cooling and heat dissipating coating based on nano carbon materials, the formulation components of which are shown in Table 1 and example 2.
The preparation method of the aqueous cooling and heat dissipation coating based on the nano carbon material refers to example 1.
Example 3
aqueous cooling and heat dissipating coating based on nano carbon materials, the formulation components of which are shown in Table 1 and example 3.
The preparation method of the aqueous cooling and heat dissipation coating based on the nano carbon material refers to example 1.
TABLE 1
The performance tests of the nanocarbon material-based aqueous cooling and heat dissipating coatings of examples 1, 2 and 3 were performed, and the test results are shown in tables 2, 3 and 4. The test results of the finger mapping test according to 4.1 items of finish paint of the HG/T4761-2014 aqueous polyurethane resin coating are shown in Table 2, the test results of the cooling and heat dissipation effect performance of the nanocarbon material-based aqueous heat dissipation coating are shown in Table 3, and the temperature test comparison table in example 1 is shown in Table 4.
TABLE 2
TABLE 3
TABLE 4
As can be seen from the above table, the water-based cooling and heat dissipating coating based on the nano carbon material provided by the embodiment of the invention has good heat dissipating performance, and the product performance meets the standard HG/T4761-2014 waterborne polyurethane resin coating, the standard HG/T4758-2014 waterborne acrylic resin coating, the standard GB/T10294-2008 protective hot plate method for determining the steady-state thermal resistance and related characteristics of a heat insulating material, and completely meets the HJ2537-2014 water-based coating for the technical requirements of environmental label products.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1, aqueous cooling and heat dissipation coating based on nano carbon material, which is characterized in that the aqueous cooling and heat dissipation coating comprises a component A and a component B, wherein,
the component A comprises the following components in percentage by weight, based on the total weight of the component A as 100 percent:
the component B comprises a water dispersible isocyanate curing agent, an alcohol ether solvent and deionized water.
2. The nanocarbon-based aqueous cooling and heat dissipating coating material according to claim 1, wherein the PVA binder is a water-soluble polyvinyl alcohol resin binder.
3. The nanocarbon-based aqueous cooling and heat dissipating coating material according to claim 1, wherein the aqueous hyperdispersant is at least selected from the group consisting of polyether aqueous hyperdispersants, polyacrylic aqueous hyperdispersants, and polyolefin aqueous hyperdispersants.
4. The nanocarbon-based aqueous cooling and heat dissipating coating of any one of claims 1 to 3 and , wherein the aqueous polyurethane dispersion is selected from the group consisting of an aliphatic aqueous polyurethane dispersion and an aqueous hydroxy acrylic emulsion.
5. The nanocarbon material-based aqueous cooling and heat dissipating coating of any one of claims 1 to 3 and , wherein the nanocarbon material is at least selected from the group consisting of graphene, carbon nanotubes, nanocarbon spheres, nanocarbon fibers.
6. The nanocarbon material-based aqueous cooling and heat dissipating coating of any one of claims 1 to 3 and , wherein the coupling agent is at least selected from titanate coupling agent, polysiloxane coupling agent, complex acid ester coupling agent and aluminate coupling agent.
7. The nanocarbon-based aqueous cooling and heat dissipating coating material of any one of claims 1 to 3 and , wherein the nanoscale heat dissipating filler is at least selected from spinel pigments, aluminum nitride, aluminum oxide, silicon nitride, silicon carbide, magnesium oxide, zinc oxide, silicon oxide, barium titanate and cerium oxide, and/or
The other fillers are at least selected from barium sulfate, talcum powder, wollastonite powder, silicon micropowder, mica powder and coarse whiting powder.
8. The nanocarbon material-based aqueous cooling and heat dissipating coating material of any one of claims 1 to 3 and , wherein the thixotropic agent is at least selected from the group consisting of an aqueous organically modified bentonite thixotropic agent, a nano fumed silica thixotropic agent, an attapulgite thixotropic agent, a polyamide wax emulsion and a polyethylene wax emulsion.
9. The nanocarbon-based aqueous cooling and heat dissipating coating material of any one of claims 1 to 3 and , wherein the water-dispersible isocyanate curing agent is at least selected from the group consisting of water-dispersible diphenylmethane diisocyanate, water-dispersible toluene diisocyanate, water-dispersible isophorone diisocyanate, water-dispersible diphenylmethane diisocyanate, water-dispersible dicyclohexylmethane diisocyanate and water-dispersible hexamethylene diisocyanate, and/or
The alcohol ether solvent is at least selected from propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol propyl ether, propylene glycol butyl ether, dipropylene glycol methyl ether, dipropylene glycol propyl ether and dipropylene glycol butyl ether.
10, preparation methods of the nano-carbon material-based water-based cooling and heat dissipation coating, which is characterized by comprising the following steps:
weighing the components according to the formula of the nanocarbon material-based aqueous cooling and heat dissipating coating of any one of claims 1 to 9, wherein the formula is ;
mixing half of deionized water, PVA binder, aqueous hyper-dispersant, coupling agent, part of other additives and nano carbon material powder serving as a component A in the formula, adding nano heat dissipation filler and other fillers after dispersion treatment, and continuously dispersing to obtain th dispersion slurry;
dispersing the aqueous polyurethane dispersion of the component A in the formula, the rest of other additives and the thixotropic agent until the slurry is in a uniform fluid state to obtain a component A;
and dispersing the water-dispersible isocyanate curing agent, the alcohol ether solvent and the deionized water of the component B until the slurry is in a uniform fluid state to obtain the component B.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111171708A (en) * | 2020-02-22 | 2020-05-19 | 东莞市鹏威能源科技有限公司 | High-temperature-resistant graphene rapid heat-dissipation anticorrosive paint and preparation method and application thereof |
| CN111334140A (en) * | 2020-03-26 | 2020-06-26 | 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） | Micro-nano carbon composite heat dissipation coating and preparation method thereof |
| CN112521843A (en) * | 2020-12-04 | 2021-03-19 | 湖南格仑新材股份有限公司 | Preparation method of carbon nanotube structure infrared radiation heat dissipation coating |
| CN113502120A (en) * | 2021-08-02 | 2021-10-15 | 广东宝伯力新材料科技有限公司 | Polyurethane colored finish paint and preparation method thereof |
| CN116144258A (en) * | 2023-04-19 | 2023-05-23 | 昱垠科技有限公司 | Super wear-resistant modified polyurethane floor coating and preparation process thereof |
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| CN105153906A (en) * | 2015-09-07 | 2015-12-16 | 济南清纳材料科技有限公司 | Water-based polyurethane functional coating material and preparation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105153906A (en) * | 2015-09-07 | 2015-12-16 | 济南清纳材料科技有限公司 | Water-based polyurethane functional coating material and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111171708A (en) * | 2020-02-22 | 2020-05-19 | 东莞市鹏威能源科技有限公司 | High-temperature-resistant graphene rapid heat-dissipation anticorrosive paint and preparation method and application thereof |
| CN111334140A (en) * | 2020-03-26 | 2020-06-26 | 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） | Micro-nano carbon composite heat dissipation coating and preparation method thereof |
| CN112521843A (en) * | 2020-12-04 | 2021-03-19 | 湖南格仑新材股份有限公司 | Preparation method of carbon nanotube structure infrared radiation heat dissipation coating |
| CN113502120A (en) * | 2021-08-02 | 2021-10-15 | 广东宝伯力新材料科技有限公司 | Polyurethane colored finish paint and preparation method thereof |
| CN116144258A (en) * | 2023-04-19 | 2023-05-23 | 昱垠科技有限公司 | Super wear-resistant modified polyurethane floor coating and preparation process thereof |
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