CN109373618A - A kind of preparation method of selective solar composite coating for absorbing - Google Patents
A kind of preparation method of selective solar composite coating for absorbing Download PDFInfo
- Publication number
- CN109373618A CN109373618A CN201811001683.7A CN201811001683A CN109373618A CN 109373618 A CN109373618 A CN 109373618A CN 201811001683 A CN201811001683 A CN 201811001683A CN 109373618 A CN109373618 A CN 109373618A
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- China
- Prior art keywords
- composite coating
- colloidal sol
- preparation
- added
- selective solar
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/20—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
- F24S70/225—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption for spectrally selective absorption
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
- C23C18/1208—Oxides, e.g. ceramics
- C23C18/1216—Metal oxides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
- C23C18/1208—Oxides, e.g. ceramics
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/125—Process of deposition of the inorganic material
- C23C18/1254—Sol or sol-gel processing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The invention discloses a kind of preparation methods of selective solar composite coating for absorbing, and nickel nitrate aqueous solution and aluminium isopropoxide aqueous solution are first mixed simultaneously back hydrolysis, and ageing obtains NiO-Al2O3Colloidal sol adds aluminium powder, zinc powder, polyaniline, inorganic phosphate and dispersing agent, and absorbed layer is made on stainless steel base surface with dip-coating method plated film in obtained plated film suspension, then uses SiO again2Colloidal sol be prepared on its surface antireflection layer to get.Gained composite coating of the invention not only has excellent optical property, also has good thermal stability.
Description
Technical field
The invention belongs to solar energy absorbing coating technical fields, and in particular to a kind of selective solar composite coating for absorbing
Preparation method.
Background technique
Limited fossil energy is constantly exhausting on the earth, and demand of the mankind to the energy constantly increases, to make
People begun to very early to can with the searching of other energy resources of the alternative ore energy, promote the mankind to solar energy,
The application of the renewable energy technologies such as thermal energy, wind energy and bio-fuel.Solar energy resources are as tellurian the abundantest
Environmentally friendly renewable energy is converted into various forms of energy and is used.Wherein, photothermal conversion technology is by widely
Applied on solar thermal collector, solar absorption surface is the key components of heat collector.Most sorbent surfaces are by leading
The metallic matrix of good in thermal property and one layer thin of absorbed layer composition, it is as much as possible that solar radiation absorb and kept
It is very important for absorbed layer without scattering and disappearing, and selectively absorbing layers are because can have the high sun to absorb and low hot spoke
It penetrates and meets the requirements.
At present, all there is certain office in practical applications in the various methods for preparing coating for selective absorption of sunlight spectrum
It is sex-limited, thus seek it is a kind of it is easy to operate, equipment requirement is low, the method for low-cost industrial mass production easy to accomplish
To prepare the preferable coating for selective absorption of optical property as current solar energy industry most urgent need.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of selective solar composite coating for absorbing, gained composite coatings
Not only there is excellent optical property, also there is good thermal stability.
A kind of preparation method of selective solar composite coating for absorbing, comprising the following steps:
Step 1, nickel nitrate aqueous solution is added in aluminium isopropoxide aqueous solution under agitation, continues stirring and closed recirculation water
1h is solved, being warming up to 90 DEG C makes ethyl alcohol volatilize, and adjusts pH to 3.0-4.0, and reflux ageing 12-18h obtains NiO-Al2O3Colloidal sol；
Step 2, aluminium powder and zinc powder are added into NiO-Al under agitation2O3In colloidal sol, after mixing evenly, addition polyaniline,
Inorganic phosphate, dispersing agent adjust pH to 4-6 after mixing evenly, and ultrasound obtains plated film suspension；
Step 3, surface is immersed in plated film suspension through the pretreated stainless steel base of overetch, with the speed of 1mm/s to it
Lifting plated film is carried out, wet film obtained is first in 25-30 DEG C of drying, then in 120 DEG C of dryings, then temperature programming is to 400-450 DEG C
Dry, be absorbed layer film；
Step 4, ethyl orthosilicate is added in dehydrated alcohol, distilled water is added after stirring, continue to stir, hydrochloric acid solution is added dropwise,
It is stirred to react, SiO is made after aged2Colloidal sol；
Step 5, Ni-NiO-Al will be covered with made from step 32O3The matrix of film immerses SiO2In colloidal sol, with the speed of 1mm/s
Lifting plated film is carried out to it, wet film obtained is first in 25-30 DEG C of drying, then in 120 DEG C of dryings, then temperature programming to 400-
450 DEG C of dryings to get.
Further, the molar ratio of nickel nitrate and aluminium isopropoxide is 2-8:2-8 in step 1.
Further, aluminium powder, zinc powder, NiO-Al in step 22O3The weight of colloidal sol, polyaniline, inorganic phosphate, dispersing agent
Than for 1-3:1-3:10:2-5:0.5-1:0.5-1.
Further, ethyl orthosilicate in step 4, dehydrated alcohol, hydrochloric acid solution weight ratio be 1:10:0.5-1.
Further, the concentration of the hydrochloric acid solution is 30-40% v/v.
It further washes, 5 DEG C/min when temperature programming in step 5.
Composite coating of the invention has low reflectivity in UV, visible light near infrared spectral range, in infrared spectroscopy model
There is high reflectivity in enclosing；Under the conditions of 600 DEG C after long-time heat preservation, the absorptivity and emissivity of coating do not become significantly
Change, there is good thermal stability.
Specific embodiment
Embodiment 1
A kind of preparation method of selective solar composite coating for absorbing, comprising the following steps:
Step 1, nickel nitrate aqueous solution is added in aluminium isopropoxide aqueous solution under agitation, nickel nitrate and aluminium isopropoxide rub
You continue stirring and closed back hydrolysis 1h, being warming up to 90 DEG C makes ethyl alcohol volatilize, and adjusts pH to 3.0, reflux ageing than being 2:8
12h obtains NiO-Al2O3Colloidal sol；
Step 2, in parts by weight, NiO-Al is added to by 1 part and 1 part of zinc powder of aluminium powder under agitation2O3In 10 parts of colloidal sol, stir
After mixing uniformly, 2 parts of polyaniline, 0.5 part of inorganic phosphate, 0.5 part of dispersing agent is added, after mixing evenly, adjusts pH to 4, it is ultrasonic,
Obtain plated film suspension；
Step 3, surface is immersed in plated film suspension through the pretreated stainless steel base of overetch, with the speed of 1mm/s to it
Lifting plated film is carried out, then wet film obtained presses 5 DEG C/min temperature programming to 400 first in 25 DEG C of dryings, then in 120 DEG C of dryings
DEG C drying, be absorbed layer film；
Step 4, in parts by weight, 1 part of ethyl orthosilicate is added in 10 parts of dehydrated alcohol, distilled water is added after stirring, continued
Stirring is added dropwise 1 part of 30% v/v hydrochloric acid solution, is stirred to react, SiO is made after aged2Colloidal sol；
Step 5, Ni-NiO-Al will be covered with made from step 32O3The matrix of film immerses SiO2In colloidal sol, with the speed of 1mm/s
Carry out lifting plated film to it, wet film obtained is first in 25 DEG C of dryings, then in 120 DEG C of dryings, then 5 DEG C/min temperature programming is extremely
400 DEG C of dryings to get.
The optical property of the composite coating is as follows: under the conditions of air quality factors A M1.5, coating absorptivity is 0.91,
Emissivity is 0.11；Under condition of high vacuum degree, after 600 DEG C of long-time heat preservations, absorptivity 0.90, normal emittance is
0.13。
Embodiment 2
A kind of preparation method of selective solar composite coating for absorbing, comprising the following steps:
Step 1, nickel nitrate aqueous solution is added in aluminium isopropoxide aqueous solution under agitation, nickel nitrate and aluminium isopropoxide rub
You continue stirring and closed back hydrolysis 1h, being warming up to 90 DEG C makes ethyl alcohol volatilize, and adjusts pH to 4.0, reflux ageing than being 5:5
18h obtains NiO-Al2O3Colloidal sol；
Step 2, in parts by weight, NiO-Al is added to by 2 parts and 2 parts of zinc powder of aluminium powder under agitation2O3In 10 parts of colloidal sol, stir
After mixing uniformly, 3 parts of polyaniline, 0.7 part of inorganic phosphate, 0.7 part of dispersing agent is added, after mixing evenly, adjusts pH to 5, it is ultrasonic,
Obtain plated film suspension；
Step 3, surface is immersed in plated film suspension through the pretreated stainless steel base of overetch, with the speed of 1mm/s to it
Lifting plated film is carried out, then wet film obtained presses 5 DEG C/min temperature programming to 450 first in 30 DEG C of dryings, then in 120 DEG C of dryings
DEG C drying, be absorbed layer film；
Step 4, in parts by weight, 1 part of ethyl orthosilicate is added in 10 parts of dehydrated alcohol, distilled water is added after stirring, continued
Stirring is added dropwise 0.5 part of 40% v/v hydrochloric acid solution, is stirred to react, SiO is made after aged2Colloidal sol；
Step 5, Ni-NiO-Al will be covered with made from step 32O3The matrix of film immerses SiO2In colloidal sol, with the speed of 1mm/s
Carry out lifting plated film to it, wet film obtained is first in 25 DEG C of dryings, then in 120 DEG C of dryings, then 5 DEG C/min temperature programming is extremely
400 DEG C of dryings to get.
The optical property of the composite coating is as follows: under the conditions of air quality factors A M1.5, coating absorptivity is 0.90,
Emissivity is 0.12；Under condition of high vacuum degree, after 600 DEG C of long-time heat preservations, absorptivity 0.88, normal emittance is
0.14。
Embodiment 3
A kind of preparation method of selective solar composite coating for absorbing, comprising the following steps:
Step 1, nickel nitrate aqueous solution is added in aluminium isopropoxide aqueous solution under agitation, nickel nitrate and aluminium isopropoxide rub
You continue stirring and closed back hydrolysis 1h, being warming up to 90 DEG C makes ethyl alcohol volatilize, and adjusts pH to 3.0, reflux ageing than being 5:5
12h obtains NiO-Al2O3Colloidal sol；
Step 2, in parts by weight, NiO-Al is added to by 3 parts and 3 parts of zinc powder of aluminium powder under agitation2O3In 10 parts of colloidal sol, stir
After mixing uniformly, 5 parts of polyaniline, 1 part of inorganic phosphate, 1 part of dispersing agent is added, after mixing evenly, adjusts pH to 4, ultrasound obtains
Plated film suspension；
Step 3, surface is immersed in plated film suspension through the pretreated stainless steel base of overetch, with the speed of 1mm/s to it
Lifting plated film is carried out, then wet film obtained presses 5 DEG C/min temperature programming to 400 first in 25 DEG C of dryings, then in 120 DEG C of dryings
DEG C drying, be absorbed layer film；
Step 4, in parts by weight, 1 part of ethyl orthosilicate is added in 10 parts of dehydrated alcohol, distilled water is added after stirring, continued
Stirring is added dropwise 1 part of 30% v/v hydrochloric acid solution, is stirred to react, SiO is made after aged2Colloidal sol；
Step 5, Ni-NiO-Al will be covered with made from step 32O3The matrix of film immerses SiO2In colloidal sol, with the speed of 1mm/s
Carry out lifting plated film to it, wet film obtained is first in 25 DEG C of dryings, then in 120 DEG C of dryings, then 5 DEG C/min temperature programming is extremely
400 DEG C of dryings to get.
The optical property of the composite coating is as follows: under the conditions of air quality factors A M1.5, coating absorptivity is 0.93,
Emissivity is 0.12；Under condition of high vacuum degree, after 600 DEG C of long-time heat preservations, absorptivity 0.90, normal emittance is
0.15。
Claims (6)
1. a kind of preparation method of selective solar composite coating for absorbing, it is characterised in that: the following steps are included:
Step 1, nickel nitrate aqueous solution is added in aluminium isopropoxide aqueous solution under agitation, continues stirring and closed recirculation water
1h is solved, being warming up to 90 DEG C makes ethyl alcohol volatilize, and adjusts pH to 3.0-4.0, and reflux ageing 12-18h obtains NiO-Al2O3Colloidal sol；
Step 2, aluminium powder and zinc powder are added into NiO-Al under agitation2O3In colloidal sol, after mixing evenly, polyaniline, nothing is added
Machine phosphate, dispersing agent adjust pH to 4-6 after mixing evenly, and ultrasound obtains plated film suspension；
Step 3, surface is immersed in plated film suspension through the pretreated stainless steel base of overetch, with the speed of 1mm/s to it
Lifting plated film is carried out, wet film obtained is first in 25-30 DEG C of drying, then in 120 DEG C of dryings, then temperature programming is to 400-450 DEG C
Dry, be absorbed layer film；
Step 4, ethyl orthosilicate is added in dehydrated alcohol, distilled water is added after stirring, continue to stir, hydrochloric acid solution is added dropwise,
It is stirred to react, SiO is made after aged2Colloidal sol；
Step 5, Ni-NiO-Al will be covered with made from step 32O3The matrix of film immerses SiO2In colloidal sol, with the speed of 1mm/s
Lifting plated film is carried out to it, wet film obtained is first in 25-30 DEG C of drying, then in 120 DEG C of dryings, then temperature programming to 400-
450 DEG C of dryings to get.
2. the preparation method of selective solar composite coating for absorbing according to claim 1, it is characterised in that: step 1
The molar ratio of middle nickel nitrate and aluminium isopropoxide is 2-8:2-8.
3. the preparation method of selective solar composite coating for absorbing according to claim 1, it is characterised in that: step 2
Middle aluminium powder, zinc powder, NiO-Al2O3Colloidal sol, polyaniline, inorganic phosphate, dispersing agent weight ratio be 1-3:1-3:10:2-5:
0.5-1:0.5-1.
4. the preparation method of selective solar composite coating for absorbing according to claim 1, it is characterised in that: step 4
Middle ethyl orthosilicate, dehydrated alcohol, hydrochloric acid solution weight ratio be 1:10:0.5-1.
5. the preparation method of selective solar composite coating for absorbing according to claim 1, it is characterised in that: the salt
The concentration of acid solution is 30-40% v/v.
6. the preparation method of selective solar composite coating for absorbing according to claim 1, it is characterised in that: step 5
5 DEG C/min when middle temperature programming.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811001683.7A CN109373618A (en) | 2018-08-30 | 2018-08-30 | A kind of preparation method of selective solar composite coating for absorbing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811001683.7A CN109373618A (en) | 2018-08-30 | 2018-08-30 | A kind of preparation method of selective solar composite coating for absorbing |
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| CN109373618A true CN109373618A (en) | 2019-02-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974317A (en) * | 2019-03-20 | 2019-07-05 | 四川大学 | A kind of solar absorption system and preparation method thereof with composite absorption mechanism |
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| CN101518824A (en) * | 2009-03-24 | 2009-09-02 | 福州大学 | Inorganic acid based collosol for preparing solar energy photo-thermal conversion absorbing membrane |
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| CN109354929A (en) * | 2018-08-30 | 2019-02-19 | 江苏京展能源科技有限公司 | A kind of preparation method of selective solar spectrum composite coating for absorbing |
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2018
- 2018-08-30 CN CN201811001683.7A patent/CN109373618A/en active Pending
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| CN101518824A (en) * | 2009-03-24 | 2009-09-02 | 福州大学 | Inorganic acid based collosol for preparing solar energy photo-thermal conversion absorbing membrane |
| CN102268673A (en) * | 2011-06-07 | 2011-12-07 | 广东联塑科技实业有限公司 | Method for preparing selective absorption coating of plastic solar thermal collector |
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| CN109974317A (en) * | 2019-03-20 | 2019-07-05 | 四川大学 | A kind of solar absorption system and preparation method thereof with composite absorption mechanism |
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Application publication date: 20190222 |