CN103555106A - Solar heat-absorbing coating material of metal ceramic nano matrix, and preparation method of coating - Google Patents
Solar heat-absorbing coating material of metal ceramic nano matrix, and preparation method of coating Download PDFInfo
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- CN103555106A CN103555106A CN201310515802.1A CN201310515802A CN103555106A CN 103555106 A CN103555106 A CN 103555106A CN 201310515802 A CN201310515802 A CN 201310515802A CN 103555106 A CN103555106 A CN 103555106A
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Abstract
The invention discloses a solar heat-absorbing coating material of a metal ceramic nano matrix. The coating material comprises the following components: a film forming matter, a color body and a solvent, wherein the film forming matter is prepared from a high-transparency acrylic resin material; the color body is a nanoscale powder pigment; the solvent is a mixed solvent composed of dimethylbenzene and phenoxyethanol ether; the mass ratio of the film forming matter to the color body to the solvent is (4-5):(6-8):(12-13). The invention also discloses a preparation method of the coating. The nanoscale powder pigment is adopted, so that the coating material has spectral selectivity, and good performances of high visible light absorption rate and low emissivity. When the coating material disclosed by the invention is used for preparing the solar heat-absorbing coating, the technology is simple; a disperse system is formed in a grinding manner, and then directly coated on a sunny slope of a solar heat-absorbing plate core; special equipment is not needed, so that the preparation cost is low.
Description
Technical field
The invention belongs to technical field of solar, be specifically related to a kind of metal-ceramic nano matrix solar energy heat absorbing coating material, the invention still further relates to the preparation method of this coating.
Background technology
What generally adopt on the market at present is spray black organic coating on the heat-absorbing plate core of flat plate collector, as black fluorocarbon resin, black epoxy, black polyurethane resin etc., because adopted common resin material as tackiness agent and usingd carbon black or black pigment as color bodies, therefore can cause: 1. coating is not weather-proof, too early efflorescence and fading, 2. due to what adopt, be that common carbon black or black pigment are as color bodies, without spectral selectivity, therefore its coating emittance is very high, has so just caused the thermo-efficiency of plate solar collector low.
< < national energy science and technology " 12 " the planning > > formulating according to National Energy Board, by 2015, China will make great efforts to set up competitive renewable energy source industrial system, and the non-fossil energy exploitation such as wind-powered electricity generation, sun power, biomass energy, solar thermal utilization and nuclear power total amount will reach 4.8 hundred million tons of standard coals.Therefore sun power and solar thermal utilization will have vast potential for future development more.
Selectively absorbing layers be in photoabsorption system for absorbing the Core Feature part of luminous energy, be generally used in solar collection element or solar selectively absorbing coating system.Be applied at present the structure of solar selectively absorbing coating of solar thermal utilization industry for being followed successively by from inside to outside infrared high reflecting metal bottom, high metal volume fraction absorption layer, low metal volume fraction absorption layer, antireflection layer.As the patent No. is 200810159261.2, name is called the Chinese invention patent of " solar selectively absorbing coating and preparation method thereof ", disclose and from bottom to top comprised successively the solar selectively absorbing coating of metal back layer, absorption layer and antireflection layer, on metal back layer, deposit the first thermal resistance diffusion layer, on absorption layer, deposit the second thermal resistance diffusion layer, this absorption is coated with the thermodiffusion effect that can effectively prevent from being coated with interlayer, and thermo-efficiency is improved.
Prepare a kind of good coating for selective absorption key and be to select to have preferably material and the preparation technology of selective solar spectrum, existing coating more options aluminium is as sputter cathode, react the film that generates graded films form with nitrogen, this film is suitable for cryogenic vacuum and uses, and anti-baking is poor; Adopt the anti-baking of film prepared by inteferometer coating to be better than film prepared by graded films, but require the optical constant of each layer, thickness etc. accurately to control during preparation, complicated process of preparation and related material are relatively costly.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of new type solar energy heat absorbing coating material, the absorption layer that uses this coated material to prepare has good weatherability, strong adhesion, the decay of fading and absorb heat is little, absorbs the low advantage of high reflection.
Technical scheme of the present invention is as follows:
A kind of metal-ceramic nano matrix solar energy heat absorbing coating material, the component of described coated material comprises film forming matter, color bodies and solvent: described film forming matter is that weight ratio is acrylic materials and the dispersion agent composition of 1000:1, described color bodies is nanometer grade powder pigment, the mixed solvent that the pimelinketone that described solvent is 1:1 by ethylene glycol phenyl ether and dimethylbenzene or ethylene glycol phenyl ether and weight and butylacetate form.
As improvement of the present invention, in above-mentioned solvent, the weight ratio of ethylene glycol phenyl ether and dimethylbenzene is 1:2.
In above-mentioned solvent, the weight ratio of ethylene glycol phenyl ether and pimelinketone and butylacetate is 1:1:1.
As the present invention, further improve, the weight ratio of above-mentioned film forming matter and color bodies and solvent is 4～5:6～8:12～13.
Further, the weight ratio of above-mentioned film forming matter and color bodies and solvent is 4:6:12.
Above-mentioned nanometer grade powder pigment is by nano grade titanium, nano level nickel, nano level cupric oxide and nano level manganese oxide phosphor composing, and the weight ratio of described nano grade titanium and nano level nickel, nano level cupric oxide and nano level manganese oxide is 1～1.2:1～1.2:2～2.6:2～2.6.
The weight ratio of above-mentioned nano grade titanium and nano level nickel, nano level cupric oxide and nano level manganese oxide is 1:1:2:2 more preferably.
Above-mentioned nanometer grade powder pigment is comprised of nano grade titanium, nano level nickel, nano level cupric oxide and nano level nitride powder.
The preparation method who the invention also discloses a kind of metal-ceramic nano matrix solar energy heat absorbing coating, comprises the steps:
By described coated material, take each component, pour in dispersion mill and grind and form after uniform dispersion system for 20～30 hours, be sprayed at solar absorber plate core sunny slope, described coat-thickness is controlled at 5～8 microns.
Take technique scheme, the beneficial effect that the present invention has is:
1, coated material of the present invention adopts nanometer grade powder pigment, this coated material there is spectral selectivity and visible-light absorptivity is high and emittance is low superperformance, thermo-efficiency high.
While 2, adopting coated material of the present invention to prepare solar energy heat absorbing coating, technique is simple, after grinding formation dispersion system, direct spraying is in solar absorber plate core sunny slope, without special equipment, preparation cost is cheap, coatingsurface hardness is high, high temperature resistant, has guaranteed higher conversion efficiency of thermoelectric and high working strength.
3, coated material of the present invention adopts acrylic resin, has that light transmission is good, binding property is strong, the advantage that durability of coating is good.
Embodiment
Embodiment 1
A matrix solar energy heat absorbing coating material, preparation process is as follows:
The first step is joined solvent, and solvent forms (weight ratio is 1:2) by ethylene glycol phenyl ether, dimethylbenzene;
Second step is joined resin, by vinylformic acid and dispersion agent, forms 1000:1 liquid;
The 3rd step preparation of nano powder body material, forms (weight ratio is 1:1:2:2) by nano-titanium, nano nickel, cupric oxide, titanium nitride;
The 4th step mixed grinding, adds powder body material, resin in solvent, puts into shredder mixed grinding, and 20 hours time, temperature≤20 ℃, are dispersed in solvent powder body material is levigate, forms ceramic water-based and receives base titanium coating;
The 5th step electrostatic spraying, with strong magnetic eddy current high voltage adsorption technology by the paint spay-coating being mixed with on solar energy collector aluminium alloy plate core, 25 ℃ of room temperatures, humidity is below 60%, high pressure static electricity dustfree environment; Thicknesses of layers 5-8 μ m;
The 6th step baking forms coated and dried fine and close sintering metal and receives base titanium film layer on plate core with baking oven, 180 ℃ of baking oven working temperatures, and the time is 25 minutes.
The detected result of prepared solar selectively absorbing coating is as follows:
1, specific absorption >=95% of sunlight, infrared emittance (80 ℃)≤10%;
2, resistance toheat: 80-300 ℃, specific absorption remains on initial value more than 95%;
3, resistance to neutral salt spray performance: survey 10000 hours, specific absorption remain on initial value more than 95% without xanthochromia, without delamination, without aliquation.
Embodiment 2
A matrix solar energy heat absorbing coating material, preparation process is as follows:
The first step is joined solvent, and solvent forms (weight ratio is 1:1:1) by ethylene glycol phenyl ether, pimelinketone, butylacetate;
Second step is joined resin, by vinylformic acid and dispersion agent, forms 1000:1 liquid;
The 3rd step preparation of nano powder body material, forms 1:1:2:2 by nano-titanium, nano nickel, cupric oxide, titanium nitride;
The 4th step mixed grinding, adds powder body material, resin in solvent, puts into shredder mixed grinding, and 20 hours time, temperature≤20 ℃, are dispersed in solvent powder body material is levigate, forms ceramic water-based and receives base titanium coating;
The 5th step electrostatic spraying, with strong magnetic eddy current high voltage adsorption technology by the paint spay-coating being mixed with on solar energy collector aluminium alloy plate core, 25 ℃ of room temperatures, humidity is below 60%, high pressure static electricity dustfree environment; Thicknesses of layers 5-8 μ m.
The 6th step baking forms coated and dried fine and close sintering metal and receives base titanium film layer on plate core with baking oven, 180 ℃ of baking oven working temperatures, and the time is 25 minutes.
The detected result of prepared solar selectively absorbing coating is as follows:
1, specific absorption >=95% of sunlight, infrared emittance (80 ℃)≤10%;
2, resistance toheat: 80-300 ℃, specific absorption remains on initial value more than 95%;
3, resistance to neutral salt spray performance: survey 10000 hours, specific absorption remain on initial value more than 95% without xanthochromia, without delamination, without aliquation.
Embodiment 3
A matrix solar energy heat absorbing coating material, preparation process is as follows:
The first step is joined solvent, and solvent forms (weight ratio is 1:1:1) by ethylene glycol phenyl ether, pimelinketone, butylacetate;
Second step is joined resin, by vinylformic acid and dispersion agent, forms 1000:1 liquid;
The 3rd step preparation of nano powder body material, forms 1:1:2:2 by nano-titanium, nano nickel, cupric oxide, manganese oxide
The 4th step mixed grinding, adds powder body material, resin in solvent, puts into shredder mixed grinding, and 20 hours time, temperature≤20 ℃, are dispersed in solvent powder body material is levigate, forms ceramic water-based and receives base titanium coating;
The 5th step electrostatic spraying, with strong magnetic eddy current high voltage adsorption technology by the paint spay-coating being mixed with on solar energy collector aluminium alloy plate core, 25 ℃ of room temperatures, humidity is below 60%, high pressure static electricity dustfree environment; Thicknesses of layers 5-8 μ m;
The 6th step baking forms coated and dried fine and close sintering metal and receives base titanium film layer on plate core with baking oven, 180 ℃ of baking oven working temperatures, and the time is 25 minutes.
The detected result of prepared solar selectively absorbing coating is as follows:
1, specific absorption >=95% of sunlight, infrared emittance (80 ℃)≤10%;
2, resistance toheat: 80-300 ℃, specific absorption remains on initial value more than 95%;
3, resistance to neutral salt spray performance: survey 10000 hours, specific absorption remain on initial value more than 95% without xanthochromia, without delamination, without aliquation.
Embodiment 4
A matrix solar energy heat absorbing coating material, each components by weight of coated material is: a kind of metal-ceramic nano matrix of propylene solar energy heat absorbing coating material, preparation process is as follows:
The first step is joined solvent, and solvent forms (weight ratio is 1:1:1) by ethylene glycol phenyl ether, pimelinketone, butylacetate;
Second step is joined resin, by vinylformic acid and dispersion agent, forms 1000:1 liquid;
The 3rd step preparation of nano powder body material, forms 1.2:1.2:2.6:2.6 by nano-titanium, nano nickel, cupric oxide, manganese oxide;
The 4th step mixed grinding, adds powder body material, resin in solvent, puts into shredder mixed grinding, and 20 hours time, temperature≤20 ℃, are dispersed in solvent powder body material is levigate, forms ceramic water-based and receives base titanium coating;
The 5th step electrostatic spraying, with strong magnetic eddy current high voltage adsorption technology by the paint spay-coating being mixed with on solar energy collector aluminium alloy plate core, 25 ℃ of room temperatures, humidity is below 60%, high pressure static electricity dustfree environment; Thicknesses of layers 5-8 μ m;
The 6th step baking forms coated and dried fine and close sintering metal and receives base titanium film layer on plate core with baking oven, 180 ℃ of baking oven working temperatures, and the time is 25 minutes.
The detected result of prepared solar selectively absorbing coating is as follows:
1, specific absorption >=95% of sunlight, infrared emittance (80 ℃)≤10%;
2, resistance toheat: 80-300 ℃, specific absorption remains on initial value more than 95%;
3, resistance to neutral salt spray performance: survey 10000 hours, specific absorption remain on initial value more than 90% without xanthochromia, without delamination, without aliquation.
Embodiment 5
A matrix solar energy heat absorbing coating material, each components by weight of coated material is: a kind of metal-ceramic nano matrix of propylene solar energy heat absorbing coating material, preparation process is as follows:
The first step is joined solvent, and solvent forms (weight ratio is 1:2) by ethylene glycol phenyl ether, dimethylbenzene;
Second step is joined resin, by vinylformic acid and dispersion agent, forms 1000:1 liquid;
The 3rd step preparation of nano powder body material, forms 1.2:1.2:2.6:2.6 by nano-titanium, nano nickel, cupric oxide, manganese oxide;
The 4th step mixed grinding, adds powder body material, resin in solvent, puts into shredder mixed grinding, and 20 hours time, temperature≤20 ℃, are dispersed in solvent powder body material is levigate, forms ceramic water-based and receives base titanium coating;
The 5th step electrostatic spraying, with strong magnetic eddy current high voltage adsorption technology by the paint spay-coating being mixed with on solar energy collector aluminium alloy plate core, 25 ℃ of room temperatures, humidity is below 60%, high pressure static electricity dustfree environment; Thicknesses of layers 5-8 μ m;
The 6th step baking forms coated and dried fine and close sintering metal and receives base titanium film layer on plate core with baking oven, 180 ℃ of baking oven working temperatures, and the time is 25 minutes.
The detected result of prepared solar selectively absorbing coating is as follows:
1, specific absorption >=95% of sunlight, infrared emittance (80 ℃)≤10%;
2, resistance toheat: 80-300 ℃, specific absorption remains on initial value more than 95%;
3, resistance to neutral salt spray performance: survey 10000 hours, specific absorption remain on initial value more than 95% without xanthochromia, without delamination, without aliquation.
Claims (9)
1. a metal-ceramic nano matrix solar energy heat absorbing coating material, the component of described coated material comprises film forming matter, color bodies and solvent, it is characterized in that:
Described film forming matter is that weight ratio is acrylic materials and the dispersion agent composition of 1000:1, described color bodies is nanometer grade powder pigment, the mixed solvent that the pimelinketone that described solvent is 1:1 by ethylene glycol phenyl ether and dimethylbenzene or ethylene glycol phenyl ether and weight and butylacetate form.
2. a kind of metal-ceramic nano matrix solar energy heat absorbing coating material according to claim 1, is characterized in that: in described solvent, the weight ratio of ethylene glycol phenyl ether and dimethylbenzene is 1:2.
3. a kind of metal-ceramic nano matrix solar energy heat absorbing coating material according to claim 1, is characterized in that: in described solvent, the weight ratio of ethylene glycol phenyl ether and pimelinketone and butylacetate is 1:1:1.
4. a kind of metal-ceramic nano matrix solar energy heat absorbing coating material according to claim 1, is characterized in that: the weight ratio of described film forming matter and color bodies and solvent is 4～5:6～8:12～13.
5. a kind of metal-ceramic nano matrix solar energy heat absorbing coating material according to claim 1, is characterized in that: the weight ratio of described film forming matter and color bodies and solvent is 4:6:12.
6. a kind of metal-ceramic nano matrix solar energy heat absorbing coating material according to claim 1, it is characterized in that: described nanometer grade powder pigment is by nano grade titanium, nano level nickel, nano level cupric oxide and nano level manganese oxide phosphor composing, and the weight ratio of described nano grade titanium and nano level nickel, nano level cupric oxide and nano level manganese oxide is 1～1.2:1～1.2:2～2.6:2～2.6.
7. a kind of metal-ceramic nano matrix solar energy heat absorbing coating material according to claim 6, is characterized in that: the weight ratio of described nano grade titanium and nano level nickel, nano level cupric oxide and nano level manganese oxide is 1:1:2:2.
8. a kind of metal-ceramic nano matrix solar energy heat absorbing coating material according to claim 1, is characterized in that: described nanometer grade powder pigment is comprised of nano grade titanium, nano level nickel, nano level cupric oxide and nano level nitride powder.
9. the preparation method of a metal-ceramic nano matrix solar energy heat absorbing coating, it is characterized in that comprising the steps: taking each component by coated material claimed in claim 1, pour in dispersion mill and grind and within 20～30 hours, form after uniform dispersion system, be sprayed at solar absorber plate core sunny slope, described coat-thickness is controlled at 5～8 microns.
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Cited By (5)
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| CN107177262A (en) * | 2017-07-25 | 2017-09-19 | 合肥嘉仕诚能源科技有限公司 | A kind of nanometer matrix solar energy heat absorbing coating and preparation method thereof |
| CN109237828A (en) * | 2017-05-08 | 2019-01-18 | 德州金奈尔新材料科技有限公司 | The highly selective heat absorption heating film of metal atomic layer depositing solar and preparation method |
| CN109456625A (en) * | 2018-11-15 | 2019-03-12 | 江苏赫尔斯镀膜技术有限公司 | Photocuring antireflection layer and its preparation method and application, heat absorption film and its preparation method and application |
| CN112517352A (en) * | 2020-10-13 | 2021-03-19 | 江苏大学 | Nano-particle loaded porous ultra-wide spectrum absorption coating and preparation method thereof |
| CN112592618A (en) * | 2020-12-15 | 2021-04-02 | 上海格斐特传感技术有限公司 | Porous absorption coating and preparation method thereof |
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Cited By (6)
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| CN112517352A (en) * | 2020-10-13 | 2021-03-19 | 江苏大学 | Nano-particle loaded porous ultra-wide spectrum absorption coating and preparation method thereof |
| CN112517352B (en) * | 2020-10-13 | 2022-07-22 | 江苏大学 | Nano-particle loaded porous ultra-wide spectrum absorption coating and preparation method thereof |
| CN112592618A (en) * | 2020-12-15 | 2021-04-02 | 上海格斐特传感技术有限公司 | Porous absorption coating and preparation method thereof |
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