CN112063260A - Preparation method of nano black chromium high-selectivity heat absorption film layer - Google Patents
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Abstract
The invention relates to the field of heat absorption film production, in particular to a preparation method of a nano black chromium high-selectivity heat absorption film layer; according to the high-selectivity heat absorption film layer, the light absorption material is fully dispersed in the isopropanol solution, and then the heat absorption film layer is prepared in a coating processing mode, so that the high-selectivity heat absorption film layer has the advantages of simple preparation process, low cost and low equipment cost; the invention adopts the mechanically modified nano chromium oxide powder, which has more excellent dispersion performance and can be better and fully fused with other components; the isopropanol solvent system aimed by the film-forming assistant adopted by the invention has excellent film-forming performance, and ensures the uniformity and integrity of the film layer.
Description
Technical Field
The invention relates to the field of heat absorption film production, in particular to a preparation method of a nano black chromium high-selectivity heat absorption film layer.
Background
Solar energy is more and more concerned by people, a solar flat plate collector is more and more favored by the building integration market and broad consumers, and the preparation technology of the heat absorption film is the core technology on flat plate solar energy and is the key factor of sunlight absorption efficiency.
CN103613288A discloses a preparation method of a selective absorbing film for a heat absorbing element of a flat-plate solar water heater, which comprises the following steps: A. sputtering a Cu target by a direct-current power supply, and performing magnetron sputtering on a Cu layer on the glass substrate; B. alternating current power supply sputtering tungsten-doped Al2O3A cermet target of magnetron sputtering first Al on the Cu layer2O3A cermet layer, wherein the Al is present in mass percent2O330-45% of tungsten is doped in the ceramic target; C. alternating current power supply sputtering tungsten-doped Al2O3Cermet target of said first Al in step B2O3Magnetron sputtering second Al on the metal ceramic layer2O3A cermet layer, wherein Al is defined in mass percent2O310-25% of tungsten is doped in the ceramic target; D. sputtering a Si-Al alloy rotary target with an AC power source, second Al in step C2O3And a chromium sesquioxide layer is formed on the metal ceramic layer through magnetron sputtering. The invention aims to provide a preparation method of a selective absorption film for a heat absorption element of a flat-plate solar water heater, which has the advantages of simple process, convenience in operation and relatively low production cost.
CN105420706A relates to a method for preparing a ceramic solar heat absorption film by one-time dip-coating and lifting of hydrosol, which is to prepare the hydrosol by taking transition metal salt as a sol precursor, water as a solvent, polyethylene glycol as an esterifying agent and a dispersing agent, substituted carboxylic acid as a complexing agent and a nonionic surfactant as a wetting agent; depositing the hydrosol on the metal substrate by a one-time dip coating-pulling method to prepare a glue film; drying the adhesive film to obtain a dry gel film; and then the dried gel film is subjected to heat treatment to obtain the ceramic solar heat absorption film with no cracks on the surface and uniform color, and the absorptivity and emissivity of the ceramic solar heat absorption film on solar energy reach relatively ideal values. The sol prepared by taking water as a solvent has high stability and uniformity, can be repeatedly utilized for many times, and effectively reduces resource consumption; the glue film is prepared by adopting a one-time dip-coating-pulling method, the process is simple, the operation is convenient, the requirement on equipment is low, and the method is environment-friendly.
CN108168119A relates to a solar heat absorption film layer and a preparation method thereof, and a solar heat absorption plate and a preparation method thereof, wherein the solar heat absorption film layer comprises an absorption layer and a reflection reducing self-cleaning layer arranged on the absorption layer, and the reflection reducing self-cleaning layer is formed by curing titanium dioxide sol doped with silicon dioxide. The preparation method of the solar heat absorption film layer comprises the following steps: and coating titanium dioxide sol doped with silicon dioxide on the absorption layer, and curing to form the anti-reflection self-cleaning layer. The solar heat absorption plate comprises a base material and a solar heat absorption film layer arranged on the surface of the base material. The preparation method of the solar heat absorbing plate comprises the following steps: forming an absorption layer on a surface of a substrate; and forming a reflection reducing self-cleaning layer on the absorption layer. The anti-reflection self-cleaning layer formed by curing the titanium dioxide sol doped with silicon dioxide is arranged on the absorption layer, so that the solar heat absorption film layer has high absorption ratio and low emission ratio, and also has good anti-fouling capability and weather resistance.
According to the above patents and the prior art, many heat absorption films in the market are prepared by adopting a magnetron sputtering technology, the manufacturing equipment of the technology is expensive, the prepared coating has poor weather resistance and poor selectivity, and the ever-increasing market demand cannot be met.
Disclosure of Invention
In order to solve the problems, the invention provides a preparation method of a nano black chromium high-selectivity heat absorption film layer.
A preparation method of a nano black chromium high-selectivity heat absorption film layer comprises the following specific scheme:
adding 0.05-0.16 part of nano carbon material, 8-12 parts of isopropanol solution and 0.01-0.05 part of surfactant into a mixing kettle according to the mass parts, quickly stirring and dispersing for 30-60min, then adding 0.3-0.6 part of ferroferric oxide nano powder, 0.1-0.4 part of zinc oxide and 0.1-0.8 part of copper oxide into the mixing kettle, continuously stirring and dispersing for 60-120min, then adding 0.3-1.2 parts of organic modified nano chromium sesquioxide powder and 0.04-0.08 part of film-forming auxiliary agent, stirring uniformly, adding into a ball mill disperser, controlling the rotating speed to be 400r/min, ball milling and dispersing for 10-18h, then circularly dispersing for 3-6 times by adopting a high-pressure micro-jet disperser, dispersing under the dispersing pressure of 500-650MPa, coating the film slurry on a base material after completion, drying at the temperature of 60-80 ℃, and sintering to obtain the nano black chromium high-selectivity heat-absorbing film layer.
The film-forming additive is a modified film-forming additive, and the preparation method comprises the following steps:
0.03-0.1 part of sodium polymethacrylate, 0.1-0.3 part of mineral oil, 0.05-0.1 part of bis (octylphenol polyoxyethylene ether) phosphate and 10-18 parts of water are put into a high-speed stirring cylinder according to the mass parts, fully stirred for 30-60min, added with 2.1-2.7 parts of alcohol ester-12, 0.5-1.2 parts of propylene glycol methyl ether, 0.3-0.8 part of ethylene glycol butyl ether and 0.1-0.5 part of hydroxypropyl cellulose, continuously stirred for 30-60min, added with 2.1-3.8 parts of 15-25% silica sol by mass part, controlled at 40-60 ℃ and stirred at high speed for 60-120min, and the modified film-forming auxiliary agent is obtained.
The mass portion of the isopropanol solution is 65-85%.
The nano carbon material is carbon nano tube or graphene.
The surfactant is fatty alcohol polyoxyethylene ether ammonium sulfate or diethanol amide stearic acid monoglyceride or nonylphenol polyoxyethylene (10) ether.
The preparation method of the silanized chromium sesquioxide comprises the following steps of;
according to the mass fraction, 100-200 parts of absolute ethyl alcohol, 20-28 parts of chromic oxide, 0.3-1.7 parts of vinyl trimethoxy silane are stirred for 30-100min at 50-60 ℃, ammonia water is used for adjusting the pH value to be 10-11, and after the reaction is finished, the mixture is centrifuged and dried to obtain the silanized chromic oxide powder;
the preparation method of the organic modified nano chromium sesquioxide powder comprises the following steps:
according to the mass portion, 7-12 portions of allyl glycidyl ether, 2.3-5.1 portions of divinyl sulfide, 0.3-0.9 portion of chromium acrylate, 30-45 portions of silanized chromium sesquioxide powder, 1.5-3.4 portions of benzoyl peroxide and 1000 portions of 500-organic silicon containing methanol are mixed uniformly, stirred for 2-5h at 50-55 ℃, filtered, recycled, and dried to obtain the organic modified nano chromium sesquioxide powder.
The invention adopts double bond copolymerization of allyl glycidyl ether, divinyl thioether, chromium acrylate and silanized chromium sesquioxide powder to obtain the organic modified nano chromium sesquioxide powder, wherein part of reaction mechanism is as follows:
according to the preparation method of the nano black chromium high-selectivity heat absorption film layer, the light absorption material is fully dispersed in the isopropanol solution, and then the heat absorption film layer is prepared in a coating processing mode, so that the preparation method has the advantages of simple preparation process, low cost and low equipment cost;
the invention adopts the mechanically modified nano chromium oxide powder, which has more excellent dispersion performance and can be better and fully fused with other components; the modified chromium sesquioxide has good hydrophobic property and is not easy to absorb moisture after being stored for a long time; when the waterproof agent is applied to a composite material, the waterproof performance of the composite material can be improved; after the surface of the chromic oxide is subjected to hydrophobic modification, the compatibility between the chromic oxide and an organic polymer is obviously changed, so that the binding force and the binding strength of the chromic oxide and the mechanical property and the physical function of the composite material are obviously enhanced, the uniformity and the integrity of the film are further ensured, and the heat absorption film prepared by the method has high selective light absorption capacity.
The isopropanol solvent system aimed by the film-forming assistant adopted by the invention has excellent film-forming performance, and ensures the uniformity and integrity of the film layer.
Drawings
FIG. 1 is a Fourier infrared spectrum of a sample of the nano black chrome high selectivity heat absorption film of example 2;
at 652cm-1An absorption peak of chromium oxide exists nearby, which indicates that the organic modified nano chromium sesquioxide powder participates in the reaction; at 590cm-1An absorption peak of copper oxide exists nearby, which indicates that the copper oxide participates in the reaction; at 407cm-1An absorption peak of ferric oxide exists nearby, which indicates that the ferroferric oxide nano powder participates in the reaction; at 407cm-1The absorption peak of zinc oxide exists nearby, which indicates that zinc oxide participates in the reaction.
Detailed Description
The invention is further illustrated by the following specific examples:
example 1
A preparation method of a nano black chromium high-selectivity heat absorption film layer comprises the following specific scheme:
adding 0.05kg of nano carbon material, 8kg of isopropanol solution and 0.01kg of surfactant into a mixing kettle, quickly stirring and dispersing for 30min, then adding 0.3kg of ferroferric oxide nano powder, 0.1kg of zinc oxide and 0.1kg of copper oxide into the mixing kettle, continuously stirring and dispersing for 60min, then adding 0.3kg of organic modified nano chromium sesquioxide powder and 0.04kg of film forming auxiliary agent, uniformly stirring, adding into a ball mill disperser, controlling the rotating speed at 300r/min, carrying out ball milling and dispersing for 10h, then circularly dispersing for 3 times by using a high-pressure micro-jet disperser, the dispersing pressure is 500MPa, coating the film slurry on a base material after completion, drying at 60 ℃, and sintering to obtain the nano black chromium high-selectivity heat absorption film layer.
And (2) putting 0.03kg of sodium polymethacrylate, 0.1kg of mineral oil, 0.05kg of bis (octylphenol polyoxyethylene ether) phosphate and 10kg of water into a high-speed stirring cylinder, fully stirring for 30min, adding 2.1kg of alcohol ester-12, 0.5kg of propylene glycol methyl ether, 0.3kg of ethylene glycol butyl ether and 0.1kg of hydroxypropyl cellulose, continuously stirring for 30min, adding 2.1kg of silica sol with the mass percentage concentration of 15%, controlling the temperature to be 40 ℃, and stirring at high speed for 60min to obtain the modified film-forming aid.
The preparation method of the organic modified nano chromium sesquioxide powder comprises the following steps:
uniformly mixing 7kg of allyl glycidyl ether, 2.3kg of divinyl sulfide, 0.3kg of chromium acrylate, 30kg of silanized chromium sesquioxide powder, 1.5kg of benzoyl peroxide and 500kg of methanol, stirring for 2 hours at 50 ℃, filtering, recycling the filtrate, and drying the solid to obtain the organic modified nano chromium sesquioxide powder.
The preparation method of the silanized chromium sesquioxide comprises the following steps of;
stirring with 100kg of anhydrous ethanol, 20kg of chromic oxide and 0.3kg of vinyl trimethoxy silane at 50 ℃ for 30min, adjusting the pH to =10 with ammonia water, centrifuging after the reaction is finished, and drying to obtain silanized chromic oxide powder;
the mass percentage concentration of the isopropanol solution is 65%.
The nano carbon material is a carbon nano tube.
The surfactant is fatty alcohol polyoxyethylene ether ammonium sulfate.
Example 2
A preparation method of a nano black chromium high-selectivity heat absorption film layer comprises the following specific scheme:
adding 0.10kg of nano carbon material, 10kg of isopropanol solution and 0.03kg of surfactant into a mixing kettle, quickly stirring and dispersing for 45min, then adding 0.5kg of ferroferric oxide nano powder, 0.2kg of zinc oxide and 0.3kg of copper oxide into the mixing kettle, continuously stirring and dispersing for 90min, then adding 0.6kg of organic modified nano chromium sesquioxide powder and 0.06kg of film forming auxiliary agent, uniformly stirring, adding into a ball mill dispersing machine, controlling the rotating speed to be 350r/min, carrying out ball milling and dispersing for 14h, then circularly dispersing for 4 times by using a high-pressure micro jet flow dispersing machine, wherein the dispersing pressure is 550MPa, coating the film slurry on a base material after completion, drying at 70 ℃, and sintering to obtain the nano black chromium high-selectivity heat absorption film layer.
The preparation method of the organic modified nano chromium sesquioxide powder comprises the following steps:
adding 0.8kg of poly (dimethylsiloxane) diglycidyl ether into 30kg of N, N' -hexamethylene-bis-acetamide aqueous solution with the mass concentration of 0.9%, uniformly stirring, adding 45kg of ethanol, uniformly mixing and stirring, adding 6.8kg of nano chromium sesquioxide powder into a reaction kettle while stirring, controlling the temperature at 70 ℃, carrying out reflux reaction for 8 hours, filtering after the reaction is finished, washing with absolute ethanol, drying at 70 ℃, and crushing to obtain the organic modified nano chromium sesquioxide powder.
The film-forming additive is a modified film-forming additive, and the preparation method comprises the following steps:
and (2) putting 0.07kg of sodium polymethacrylate, 0.2kg of mineral oil, 0.08kg of bis (octylphenol polyoxyethylene ether) phosphate and 14kg of water into a high-speed stirring cylinder, fully stirring for 45min, adding 2.4kg of alcohol ester-12, 0.9kg of propylene glycol methyl ether, 0.5kg of ethylene glycol butyl ether and 0.3kg of hydroxypropyl cellulose, continuously stirring for 45min, adding 2.8kg of silica sol with the mass percentage concentration of 20%, controlling the temperature to be 50 ℃, and stirring at high speed for 90min to obtain the modified film-forming aid.
The preparation method of the organic modified nano chromium sesquioxide powder comprises the following steps:
uniformly mixing 11kg of allyl glycidyl ether, 4.2kg of divinyl sulfide, 0.5kg of chromium acrylate, 30-45kg of silanized chromium sesquioxide powder, 1.5-3.4kg of benzoyl peroxide and 500-1000kg of methanol, stirring for 2-5h at 50-55 ℃, filtering, recycling the filtrate, and drying the solid to obtain the organic modified nano chromium sesquioxide powder.
The preparation method of the silanized chromium sesquioxide comprises the following steps of;
stirring with 140kg of anhydrous ethanol, 25kg of chromic oxide and 0.9kg of vinyl trimethoxy silane at 55 ℃ for 80min, adjusting the pH to =10 with ammonia water, centrifuging after the reaction is finished, and drying to obtain silanized chromic oxide powder;
the concentration of the isopropanol solution in percentage by mass is 75%.
The nano carbon material is graphene.
The surfactant is diethanolamide stearic acid monoglyceride.
Example 3
A preparation method of a nano black chromium high-selectivity heat absorption film layer comprises the following specific scheme:
adding 0.16kg of nano carbon material, 12kg of isopropanol solution and 0.05kg of surfactant into a mixing kettle, rapidly stirring and dispersing for 60min, then adding 0.6kg of ferroferric oxide nano powder, 0.4kg of zinc oxide and 0.8kg of copper oxide into the mixing kettle, continuously stirring and dispersing for 120min, then adding 1.2kg of organic modified nano chromium sesquioxide powder and 0.08kg of film forming auxiliary agent, uniformly stirring, adding into a ball mill disperser, controlling the rotating speed at 400r/min, carrying out ball milling and dispersing for 18h, then circularly dispersing for 6 times by using a high-pressure micro-jet disperser, wherein the dispersing pressure is 650MPa, coating the film slurry on a base material after completion, drying at 80 ℃, and sintering to obtain the nano black chromium high-selectivity heat absorption film layer.
The preparation method of the organic modified nano chromium sesquioxide powder comprises the following steps:
adding 1.4kg of poly (dimethylsiloxane) diglycidyl ether into 40kg of N, N' -hexamethylene-bis-acetamide aqueous solution with the mass concentration of 1.2%, uniformly stirring, adding 50kg of ethanol, uniformly mixing and stirring, adding 9.8kg of nano chromium sesquioxide powder into a reaction kettle while stirring, controlling the temperature at 80 ℃, carrying out reflux reaction for 10 hours, filtering after the reaction is finished, washing with absolute ethanol, drying at 80 ℃, and crushing to obtain the organic modified nano chromium sesquioxide powder.
The film-forming additive is a modified film-forming additive, and the preparation method comprises the following steps:
and (2) putting 0.1kg of sodium polymethacrylate, 0.3kg of mineral oil, 0.1kg of bis (octylphenol polyoxyethylene ether) phosphate and 18kg of water into a high-speed stirring cylinder, fully stirring for 60min, adding 2.7kg of alcohol ester-12, 1.2kg of propylene glycol methyl ether, 0.8kg of ethylene glycol butyl ether and 0.5kg of hydroxypropyl cellulose, continuously stirring for 60min, adding 3.8kg of silica sol with the mass percentage concentration of 25%, controlling the temperature to be 60 ℃, and stirring at high speed for 120min to obtain the modified film-forming aid.
The preparation method of the organic modified nano chromium sesquioxide powder comprises the following steps:
uniformly mixing 12kg of allyl glycidyl ether, 5.1kg of divinyl sulfide, 0.9kg of chromium acrylate, 45kg of silanized chromium sesquioxide powder, 3.4kg of benzoyl peroxide and 1000kg of methanol, stirring for 2-5h at 50-55 ℃, filtering, recycling the filtrate, and drying the solid to obtain the organic modified nano chromium sesquioxide powder.
The preparation method of the silanized chromium sesquioxide comprises the following steps of;
stirring with 200kg of anhydrous ethanol, 28kg of chromic oxide and 1.7kg of vinyl trimethoxy silane at 60 ℃ for 100min, adjusting the pH to =11 with ammonia water, centrifuging after the reaction is finished, and drying to obtain silanized chromic oxide powder;
the concentration of the isopropanol solution in percentage by mass is 85%.
The nano carbon material is graphene.
The surfactant is nonylphenol polyoxyethylene (10) ether.
Comparative example 1
The preparation method of the organic modified nano chromium sesquioxide powder comprises the following steps:
uniformly mixing 7kg of allyl glycidyl ether, 2.3kg of divinyl sulfide, 30kg of silanized chromium sesquioxide powder, 1.5kg of benzoyl peroxide and 500kg of methanol, stirring for 2 hours at 50 ℃, filtering, recycling the filtrate, and drying the solid to obtain the organic modified nano chromium sesquioxide powder.
The preparation method of the silanized chromium sesquioxide comprises the following steps of;
stirring with 100kg of anhydrous ethanol, 20kg of chromic oxide and 0.3kg of vinyl trimethoxy silane at 50 ℃ for 30min, adjusting the pH to =10 with ammonia water, centrifuging after the reaction is finished, and drying to obtain silanized chromic oxide powder;
the film-forming additive is a modified film-forming additive, and the preparation method comprises the following steps:
and (2) putting 0.03kg of sodium polymethacrylate, 0.1kg of mineral oil, 0.05kg of bis (octylphenol polyoxyethylene ether) phosphate and 10kg of water into a high-speed stirring cylinder, fully stirring for 30min, adding 2.1kg of alcohol ester-12, 0.5kg of propylene glycol methyl ether, 0.3kg of ethylene glycol butyl ether and 0.1kg of hydroxypropyl cellulose, continuously stirring for 30min, adding 2.1kg of silica sol with the mass percentage concentration of 15%, controlling the temperature to be 40 ℃, and stirring at high speed for 60min to obtain the modified film-forming aid.
Otherwise, the same procedure as in example 1 was repeated.
Comparative example 2
A preparation method of a nano black chromium high-selectivity heat absorption film layer comprises the following specific scheme:
adding 0.05kg of nano carbon material, 8kg of isopropanol solution and 0.01kg of surfactant into a mixing kettle, quickly stirring and dispersing for 30min, then adding 0.1kg of zinc oxide and 0.1kg of copper oxide into the mixing kettle, continuously stirring and dispersing for 60min, then adding 0.3kg of organic modified nano chromium sesquioxide powder and 0.04kg of film forming auxiliary agent, uniformly stirring, adding into a ball mill dispersing machine, controlling the rotating speed to 300r/min, carrying out ball mill dispersion for 10h, then circularly dispersing for 3 times by using a high-pressure micro-jet dispersing machine, wherein the dispersing pressure is 500MPa, coating film slurry on a base material after completion, drying at the temperature of 60 ℃, and sintering to obtain the nano black chromium high-selectivity heat absorption film layer.
The preparation method of the organic modified nano chromium sesquioxide powder comprises the following steps:
uniformly mixing 7kg of allyl glycidyl ether, 2.3kg of divinyl sulfide, 0.3kg of chromium acrylate, 30kg of chromium oxide powder, 1.5kg of benzoyl peroxide and 500kg of methanol, stirring for 2 hours at 50 ℃, filtering, recycling the filtrate, and drying the solid to obtain the organic modified nano chromium sesquioxide powder.
The film-forming additive is a modified film-forming additive, and the preparation method comprises the following steps:
and (2) putting 0.03kg of sodium polymethacrylate, 0.1kg of mineral oil, 0.05kg of bis (octylphenol polyoxyethylene ether) phosphate and 10kg of water into a high-speed stirring cylinder, fully stirring for 30min, adding 2.1kg of alcohol ester-12, 0.5kg of propylene glycol methyl ether, 0.3kg of ethylene glycol butyl ether and 0.1kg of hydroxypropyl cellulose, continuously stirring for 30min, adding 2.1kg of silica sol with the mass percentage concentration of 15%, controlling the temperature to be 40 ℃, and stirring at high speed for 60min to obtain the modified film-forming aid.
The mass percentage concentration of the isopropanol solution is 65%.
The nano carbon material is a carbon nano tube.
The surfactant is fatty alcohol polyoxyethylene ether ammonium sulfate.
Comparative example 3
A preparation method of a nano black chromium high-selectivity heat absorption film layer comprises the following specific scheme:
adding 0.05kg of nano carbon material, 8kg of isopropanol solution and 0.01kg of surfactant into a mixing kettle, quickly stirring and dispersing for 30min, then adding 0.3kg of ferroferric oxide nano powder, 0.1kg of zinc oxide and 0.1kg of copper oxide into the mixing kettle, continuously stirring and dispersing for 60min, then adding 0.3kg of chromium sesquioxide powder and 0.04kg of film forming auxiliary agent, uniformly stirring, adding into a ball mill disperser, controlling the rotating speed at 300r/min, carrying out ball milling and dispersing for 10h, then circularly dispersing for 3 times by using a high-pressure micro-jet disperser, the dispersing pressure is 500MPa, coating the film slurry on a base material after completion, drying at 60 ℃, and sintering to obtain the nano black chromium high-selectivity heat absorption film layer.
The film-forming additive is a modified film-forming additive, and the preparation method comprises the following steps:
and (2) putting 0.03kg of sodium polymethacrylate, 0.1kg of mineral oil, 0.05kg of bis (octylphenol polyoxyethylene ether) phosphate and 10kg of water into a high-speed stirring cylinder, fully stirring for 30min, adding 2.1kg of alcohol ester-12, 0.5kg of propylene glycol methyl ether, 0.3kg of ethylene glycol butyl ether and 0.1kg of hydroxypropyl cellulose, continuously stirring for 30min, adding 2.1kg of silica sol with the mass percentage concentration of 15%, controlling the temperature to be 40 ℃, and stirring at high speed for 60min to obtain the modified film-forming aid.
The mass percentage concentration of the isopropanol solution is 65%.
The nano carbon material is a carbon nano tube.
The surfactant is fatty alcohol polyoxyethylene ether ammonium sulfate.
In the experimental example and the comparative example, the substrate was aluminum foil, and the prepared sample was measured by a CHI-650A electrochemical workstation measurement system manufactured by shanghai chenhua instruments ltd to measure the corrosion resistance of the film-based system by measuring the polarization curve of the sample. The corrosion medium is sodium chloride solution with the mass fraction of 3.5%. The scanning degree of the polarization potential control unit in the decayed candle medium is 5 mV/min; the auxiliary electrode is a platinum electrode; the reference electrode is a saturated potassium chloride solution; the lower the corrosion potential of the sample, the poorer the corrosion resistance of the sample. A756 PC type ultraviolet-visible spectrophotometer manufactured by Shanghai spectral instruments Limited is adopted to measure the absorbance of the film, the wavelength range is 250-2500nm, the scanning step length is 1nm, the scanning mode is rapid scanning, and the scanning oxygen partial pressure is 0.11 Pa. And calculating the ratio of the absorptivity and the emissivity of the sample in the infrared region, wherein the larger the value of the ratio of the absorptivity and the emissivity is, the better the selective light absorption performance of the sample is.
The corrosion potentials and the absorptance and emittance of the samples of the above examples and comparative examples are shown in the following table:
| corrosion potential (V) | ɑ/ɛ | |
| Example 1 | -0.79 | 12.47 |
| Example 2 | -0.72 | 12.71 |
| Example 3 | -0.68 | 13.84 |
| Comparative example 1 | -0.86 | 9.57 |
| Comparative example 2 | -0.81 | 8.94 |
| Comparative example 3 | -0.94 | 7.41 |
Claims (6)
1. A preparation method of a nano black chromium high-selectivity heat absorption film layer comprises the following specific scheme:
adding 0.05-0.16 part of nano carbon material, 8-12 parts of isopropanol solution and 0.01-0.05 part of surfactant into a mixing kettle according to the mass parts, quickly stirring and dispersing for 30-60min, then adding 0.3-0.6 part of ferroferric oxide nano powder, 0.1-0.4 part of zinc oxide and 0.1-0.8 part of copper oxide into the mixing kettle, continuously stirring and dispersing for 60-120min, then adding 0.3-1.2 parts of organic modified nano chromium sesquioxide powder and 0.04-0.08 part of film-forming auxiliary agent, stirring uniformly, adding into a ball mill disperser, controlling the rotating speed to be 400r/min, ball milling and dispersing for 10-18h, then circularly dispersing for 3-6 times by adopting a high-pressure micro-jet disperser, dispersing under the dispersing pressure of 500-650MPa, coating the film slurry on a base material after completion, drying at the temperature of 60-80 ℃, and sintering to obtain the nano black chromium high-selectivity heat-absorbing film layer.
2. The preparation method of the nano black chromium high-selectivity heat absorption film layer according to claim 1, characterized in that: the preparation method of the organic modified nano chromium sesquioxide powder comprises the following steps:
according to the mass portion, 7-12 portions of allyl glycidyl ether, 2.3-5.1 portions of divinyl sulfide, 0.3-0.9 portion of chromium acrylate, 30-45 portions of silanized chromium sesquioxide powder, 1.5-3.4 portions of benzoyl peroxide and 1000 portions of 500-organic silicon containing methanol are mixed uniformly, stirred for 2-5h at 50-55 ℃, filtered, recycled, and dried to obtain the organic modified nano chromium sesquioxide powder.
3. The preparation method of the nano black chromium high-selectivity heat absorption film layer as claimed in claim 2, wherein the preparation method comprises the following steps: the preparation method of the silanized chromium sesquioxide comprises the following steps of;
according to the mass fraction, 100-200 parts of absolute ethyl alcohol, 20-28 parts of chromic oxide, 0.3-1.7 parts of vinyl trimethoxy silane are stirred for 30-100min at 50-60 ℃, ammonia water is used for adjusting the pH value to be 10-11, and after the reaction is finished, the mixture is centrifuged and dried to obtain the silanized chromic oxide powder;
the preparation method of the nano black chromium high-selectivity heat absorption film layer according to claim 1, characterized in that: the film-forming additive is a modified film-forming additive, and the preparation method comprises the following steps:
0.03-0.1 part of sodium polymethacrylate, 0.1-0.3 part of mineral oil, 0.05-0.1 part of bis (octylphenol polyoxyethylene ether) phosphate and 10-18 parts of water are put into a high-speed stirring cylinder according to the mass parts, fully stirred for 30-60min, added with 2.1-2.7 parts of alcohol ester-12, 0.5-1.2 parts of propylene glycol methyl ether, 0.3-0.8 part of ethylene glycol butyl ether and 0.1-0.5 part of hydroxypropyl cellulose, continuously stirred for 30-60min, added with 2.1-3.8 parts of 15-25% silica sol by mass part, controlled at 40-60 ℃ and stirred at high speed for 60-120min, and the modified film-forming auxiliary agent is obtained.
4. The preparation method of the nano black chromium high-selectivity heat absorption film layer according to claim 1, characterized in that: the mass portion of the isopropanol solution is 65-85%.
5. The preparation method of the nano black chromium high-selectivity heat absorption film layer according to claim 1, characterized in that: the nano carbon material is carbon nano tube or graphene.
6. The preparation method of the nano black chromium high-selectivity heat absorption film layer according to claim 1, characterized in that: the surfactant is fatty alcohol polyoxyethylene ether ammonium sulfate or diethanol amide stearic acid monoglyceride or nonylphenol polyoxyethylene (10) ether.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0016243A1 (en) * | 1979-02-15 | 1980-10-01 | Trevor P. Dr. Woodman | Paint for the spectral selective coating of metal surfaces and its use |
| CN102093767A (en) * | 2010-12-02 | 2011-06-15 | 无锡中阳新能源科技有限公司 | Medium and high temperature solar selective absorption coating and coating layer and preparation method thereof |
| CN111154359A (en) * | 2019-12-31 | 2020-05-15 | 广东天朗化工实业有限公司 | Water-based normal-temperature crosslinking acrylic acid solar spectrum selective coating and preparation method thereof |
-
2020
- 2020-09-08 CN CN202010937174.6A patent/CN112063260A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0016243A1 (en) * | 1979-02-15 | 1980-10-01 | Trevor P. Dr. Woodman | Paint for the spectral selective coating of metal surfaces and its use |
| CN102093767A (en) * | 2010-12-02 | 2011-06-15 | 无锡中阳新能源科技有限公司 | Medium and high temperature solar selective absorption coating and coating layer and preparation method thereof |
| CN111154359A (en) * | 2019-12-31 | 2020-05-15 | 广东天朗化工实业有限公司 | Water-based normal-temperature crosslinking acrylic acid solar spectrum selective coating and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 张云兰等: "《塑料在机械工业中的应用》", 30 November 1988, 机械工业出版社 * |
| 罗爽: "三氧化二铬及磷酸铬铝疏水性表面改性的研究", 《中国学位论文全文数据库》 * |
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