CN112175458A - Self-adaptive temperature-control radiation refrigeration coating and application thereof - Google Patents
Self-adaptive temperature-control radiation refrigeration coating and application thereof Download PDFInfo
- Publication number
- CN112175458A CN112175458A CN202011069312.XA CN202011069312A CN112175458A CN 112175458 A CN112175458 A CN 112175458A CN 202011069312 A CN202011069312 A CN 202011069312A CN 112175458 A CN112175458 A CN 112175458A
- Authority
- CN
- China
- Prior art keywords
- coating
- layer
- temperature
- adaptive
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2251—Oxides; Hydroxides of metals of chromium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention relates to a self-adaptive temperature-control radiation refrigeration coating and application thereof, belonging to the technical field of radiation refrigeration. In order to solve the problem that the existing material is still in a refrigeration state under a low-temperature environment and cannot be adaptive to temperature, the invention provides an adaptive-temperature radiation refrigeration coating, wherein the coating is a single-layer or double-layer adaptive-temperature radiation refrigeration coating, and the main components of the single-layer coating comprise a reversible thermochromic material, reflective particles, emission-type particles and a film-forming matrix; the dual layer coating includes a radiation-cooled layer and a phase change layer. The invention utilizes the characteristics of selective absorption and selective emission of the reversible thermochromic material or the phase-change material to spectral energy at different temperatures, so that the coating has the function of a radiation refrigeration switch, realizes the self-adaptive temperature control functions of refrigeration in summer and heat preservation in winter within a certain temperature range, has the advantages of long service life, low cost, simple process, easy operation and the like, and is suitable for the thermal control field of energy-saving buildings and space detectors.
Description
Technical Field
The invention belongs to the technical field of radiation refrigeration, and particularly relates to a self-adaptive temperature-control radiation refrigeration coating and application thereof.
Background
The daytime radiation refrigeration technology is used as a passive refrigeration mode, and the temperature lower than the air temperature is reduced without any energy input by strongly reflecting solar radiation (0.3-2.5 mu m) and performing radiation heat exchange with an outer space (3K) by utilizing an atmospheric window (8-13 mu m). At present, a series of radiation refrigeration materials for realizing daytime cooling are prepared, such as radiation refrigeration films, radiation refrigeration coatings, porous polymer structural materials and wood structural materials, and the application fields of the materials are very wide, and the materials comprise the fields of energy-saving buildings, photovoltaic radiation cooling, refrigerated vehicles, large-scale oil depots, human body thermal management, airplane gallery bridges and the like.
However, the existing radiation refrigeration materials have a defect that the materials are still in a refrigeration state in a low-temperature environment, and adaptive thermal regulation cannot be performed. Thus, the radiation refrigeration material can save energy in summer with high temperature, but in winter or cold night, the radiation refrigeration material can not only preserve heat to save energy, but also cause additional energy consumption. If the radiation refrigeration material cannot change the working state in winter, the energy saved in summer may not be enough to make up for the energy loss caused by heat dissipation in winter, the application value of the radiation refrigeration material is lost, and the radiation refrigeration material is removed or the infrared shielding material is adhered to realize heat preservation, so that the waste of the material and the increase of labor cost are caused, and the potential application of the radiation refrigeration material is severely limited.
Disclosure of Invention
In order to solve the problem that the energy loss is caused because the existing radiation refrigeration material is still in a refrigeration state under a low-temperature environment, the invention provides a self-adaptive temperature radiation refrigeration coating and application thereof.
The technical scheme of the invention is as follows:
an adaptive temperature-adaptive radiation refrigeration coating, which is a single-layer adaptive temperature-adaptive radiation refrigeration coating or a double-layer adaptive temperature-adaptive radiation refrigeration coating:
the single-layer self-adaptive temperature-control radiation refrigeration coating comprises the following components in parts by weight: 2-10 parts of reversible thermochromic material, 15-30 parts of reflective particles, 5-20 parts of emission particles, 40-60 parts of film forming matrix, 0.5-1.5 parts of film forming additive, 1-3 parts of dispersing agent, 0.1-0.5 part of defoaming agent, 0.5-2 parts of thickening agent, 0.1-0.5 part of flatting agent and 0-20 parts of deionized water;
the double-layer self-adaptive temperature control radiation refrigeration coating comprises a radiation refrigeration layer and a phase change layer coated on the radiation refrigeration layer, wherein the radiation refrigeration layer comprises the following components in parts by weight: 15-30 parts of reflection-type particles, 10-20 parts of emission-type particles, 40-60 parts of film-forming matrix, 0.5-1.5 parts of film-forming assistant, 1-3 parts of dispersing agent, 0.1-0.5 part of defoaming agent, 0.5-2 parts of thickening agent, 0.1-0.5 part of flatting agent and 0-20 parts of deionized water; the phase change layer comprises the following components in percentage by volume: 10-20% of phase change material and 80-90% of film forming matrix.
Further, the color change temperature range of the single-layer self-adaptive temperature-control radiation cooling coating is 20-50 ℃, and the phase change temperature range of the phase change layer in the double-layer self-adaptive temperature-control radiation cooling coating is 15-42 ℃.
Further, the reversible thermochromic material is an inorganic reversible thermochromic material or an organic reversible thermochromic material, wherein the inorganic reversible thermochromic material is one of vanadate, chromate or tungstate, and the organic reversible thermochromic material is one of triarylmethane phthalide, triphenylmethane or spiropyran reversible thermochromic materials.
Further, the vanadate is BiVO4The chromate is PbCrO4Or BaCrO4The triarylmethane phthalide reversible thermochromic material is crystal violet lactone, malachite green or cresol red, the triphenylmethane reversible thermochromic material is bromocresol purple or bromocresol green, and the spiropyran reversible thermochromic material is indoline spiropyran.
Further, the phase change material is VO2Composite phase change material or Na2SO4·10H2One of O; wherein VO2The composite phase-change material is Na2WO4VO with doping amount of 1.0-2.0 at%2And (3) powder.
Further, the reflective particles are TiO with a particle size distribution of 0.05-10 μm2、CaCO3、BaSO4、SiO2Or one or a combination of more of mica powder; the emission type particles are SiO with the particle size distribution of 2-30 μm2、Si3N4Or one or a combination of more of SiC, and the emissivity of the emission type particles in an atmospheric window of 8-13 mu m wave band is not lower than 90%.
Further, the film forming substrate is one of water-based resin, a coupling agent or polyvinylidene fluoride combined with N-methyl pyrrolidone; wherein the water-based resin is one or a combination of more of water-based acrylic resin, water-based epoxy resin, water-based organic silicon resin, water-based phenolic resin, water-based amino resin, water-based alkyd resin or water-based polyester resin, and the coupling agent is gamma-aminopropyltriethoxysilane.
Further, the film-forming additive is one or a combination of more of propylene glycol phenyl ether, ethylene glycol butyl ether, benzyl alcohol, ethylene glycol phenyl ether or dodecyl alcohol ester; the dispersant is one or a combination of more of sodium polycarboxylate, sulfate, alkyl quaternary ammonium salt, aminopropylamine dioleate, fatty acid ethylene oxide addition product, phosphate type high molecular polymer or oil aminooleate; the defoaming agent is one or a combination of a plurality of tributyl phosphate, polyether defoaming agent or organic silicon defoaming agent; the thickening agent is one or a combination of more of carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose or hydroxypropyl methyl cellulose; the leveling agent is one or a combination of more of acrylate homopolymer or copolymer, cellulose acetate butyrate, organic silicon, diphenyl polysiloxane, methyl phenyl polysiloxane, organic modified siloxane or acrylic acid.
Furthermore, the surface of the single-layer self-adaptive temperature-control radiation refrigeration coating is molded to have a triangular prism type, pyramid type or bionic natural wrinkling structure.
Further, the thickness of the single-layer self-adaptive temperature-control radiation refrigeration coating is 200-800 mu m; the thickness of the radiation refrigerating layer of the double-layer self-adaptive temperature control radiation refrigerating coating is 200-800 mu m, and the thickness of the phase change layer is 50-300 mu m.
The invention relates to an application of a self-adaptive temperature-adaptive radiation refrigeration coating in the fields of heat control of energy-saving buildings, space detectors, outdoor power electronic equipment and personal heat management.
The invention has the beneficial effects that:
the single-layer self-adaptive temperature-control radiation refrigeration coating or the double-layer self-adaptive temperature-control radiation refrigeration coating provided by the invention introduces the reversible thermochromic material or the phase-change material into the radiation refrigeration coating, and utilizes the selective absorption and selective emission characteristics of the reversible thermochromic material or the phase-change material on spectral energy at different temperatures to enable the coating to have the radiation refrigeration switching function, thereby solving the problems that the existing radiation refrigeration material still refrigerates and cannot preserve heat in a low-temperature environment, and further realizing the self-adaptive temperature control function of refrigerating in summer and preserving heat in winter within a certain temperature range. The invention also molds the surface structure of the single-layer self-adaptive temperature-control radiation refrigeration coating, thereby improving the temperature control performance of the coating.
The self-adaptive temperature radiation refrigeration coating provided by the invention has the advantages of long service life, low cost, simple process, easiness in operation and the like, and is suitable for the thermal control fields of energy-saving buildings, space detectors, outdoor power electronic equipment and personal thermal management.
Drawings
FIG. 1 is a graph comparing the spectral (0.3-2.5 μm) reflectance of a single layer adaptive temperature controlled radiation refrigeration coating prepared in example 1 when the coating exhibits different colors at different temperatures;
FIG. 2 is a graph of spectral (8.0-13.0 μm) emissivity of a single layer adaptive temperature controlled radiation refrigeration coating prepared in example 1 showing different colors at different temperatures;
FIG. 3 is a schematic cross-sectional view of a monolayer adaptive temperature controlled radiation cryo-coating with a planar surface prepared in example 1;
FIG. 4 is a schematic cross-sectional view of a single-layer adaptive temperature-controlling radiation-cooling coating having a triangular prism-shaped surface prepared in example 2;
FIG. 5 is a graph comparing the spectral (0.3-2.5 μm) reflectance of single layer adaptive temperature controlled radiation chilling coatings prepared in examples 1 and 2;
FIG. 6 is a graph of spectral (8-13 μm) emissivity contrast for single layer adaptive temperature controlled radiation chilling coatings prepared in examples 1 and 2;
table 7 is a schematic cross-sectional view of the dual layer adaptive temperature controlled radiation refrigeration coating prepared in example 3;
FIG. 1, phase change layer; 2. a radiation refrigeration layer.
Detailed Description
The technical solutions of the present invention are further described below with reference to the following examples, but the present invention is not limited thereto, and any modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention. The process equipment or apparatus not specifically mentioned in the following examples are conventional in the art, and if not specifically mentioned, the raw materials and the like used in the examples of the present invention are commercially available; unless otherwise specified, the technical means used in the examples of the present invention are conventional means well known to those skilled in the art.
Example 1
The present embodiment provides a single layer adaptive temperature controlled radiation refrigeration coating.
The single-layer adaptive temperature-control radiation refrigeration coating provided by the embodiment comprises the following components in parts by weight:
reversible color-changing material BiVO 42 parts of bismuth vanadate, and reflective particles BaSO with particle size distribution of 0.05-10 mu m 420 parts of emitting particle SiO with particle size distribution of 2-30 μm 28 parts of particles, 60 parts of film-forming substrate water-based acrylic resin, 1.5 parts of film-forming auxiliary agent propylene glycol phenyl ether, 1 part of dispersant sodium polycarboxylate, 0.5 part of defoamer tributyl phosphate, 1.5 parts of thickener carboxymethyl cellulose, 0.5 part of leveling agent acrylate homopolymer and 5 parts of deionized water.
The preparation method of the single-layer self-adaptive temperature-control radiation cooling coating comprises the following steps: the materials are fully mixed, stirred and oscillated according to the proportion by a conventional method, so that different materials are uniformly dispersed into a film forming substrate, wherein deionized water is used for adjusting the viscosity of the coating, so that the coating with proper viscosity is obtained, and the construction is carried out in a rolling, brushing or spraying manner, so that the single-layer self-adaptive temperature-controlled radiation refrigeration coating with the thickness of 200-800 mu m is obtained.
The color-changing temperature of the single-layer self-adaptive temperature-control radiation cooling coating in the embodiment is 24-26 ℃, and when the external environment temperature is lower than 24 ℃, the reversible thermochromic material BiVO in the coating4Bismuth vanadate enables the coating to be yellow so as to mainly absorb solar radiation; when the external environment is within the range of 24-26 ℃, the coating is blue, so that the temperature of the coating is basically the same as that of the environment; when the temperature of the external environment is higher than 26 ℃, the coating is white to mainly reflect solar radiation.
FIG. 1 is a graph comparing the spectral reflectance (0.3-2.5 μm) of a single-layer adaptive temperature-controlled radiation cooling coating prepared in this example when the coating exhibits different colors at different temperatures; FIG. 2 is a graph comparing the spectral emissivity (8.0-13.0 μm) of a single layer adaptive temperature controlled radiation cooling coating prepared in this example when the coating exhibits different colors at different temperatures;
table 1 shows the average solar band reflectivity and the average atmospheric window band emissivity values for different colors of the coating obtained by integrating and averaging the data of fig. 1 and 2.
TABLE 1
| Colour(s) | RSolar(0.3-2.5μm) | RVIS(0.38-0.76μm) | RNIR(0.76-2.5μm) | εIR(8-13μm) |
| White colour | 0.92 | 0.97 | 0.94 | 0.94 |
| Blue color | 0.88 | 0.89 | 0.87 | 0.94 |
| Yellow colour | 0.82 | 0.81 | 0.84 | 0.94 |
R in Table 1Solar(0.3-2.5 μm) represents reflectance, R, of the entire solar bandVIS(0.38-0.76 μm) represents the reflectance, R, of the visible light band in the solar bandNIR(0.76-2.5 μm) represents the reflectance of the infrared band in the solar band,IREmissivity in the 8-13 μm band (8-13 μm).
As can be seen from the data in fig. 1 and table 1, in the solar band, the solar reflection power is sequentially white coating, blue coating and yellow coating from strong to weak. As can be seen from the data in FIG. 2 and Table 1, the emissivity of the coating in the 8.0-13.0 μm band remains substantially unchanged for each color, indicating that the cooling emission capability is not affected by the color of the coating.
The color-changing temperature of the single-layer self-adaptive temperature-control radiation cooling coating in the embodiment is 24-26 ℃.
When the external environment temperature is higher than 26 ℃, the single-layer adaptive temperature-control radiation refrigeration coating is white, and the reflectivity of the coating to solar radiation (0.3-2.5 mu m) is higher than that of a blue coating and a yellow coating. The white coating strongly reflects sunlight and emits energy, and the whole temperature of the coating is lower than the ambient temperature, so that the white coating can realize refrigeration and cooling when the external ambient temperature is high in summer.
When the external environment temperature is in a range of 24-26 ℃, the single-layer self-adaptive temperature-controlled radiation refrigeration coating is blue, the solar spectrum reflectivity of the blue is between yellow and white, the absorbed solar energy is basically equal to the emitted energy, and the overall temperature of the coating is the same as the environment temperature.
When the external environment temperature is lower than 24 ℃, the single-layer self-adaptive temperature-control radiation refrigeration coating is yellow, the solar spectrum reflectivity is lower, the absorbed energy is greater than the emitted energy, the coating mainly absorbs the solar energy, and the integral temperature of the surface of the coating is higher than the environment temperature, so that the yellow coating can realize heat preservation when the external environment temperature is low in winter.
The embodiment adjusts the sunlight absorption rate of the coating by the thermochromic material in different colors at different environmental temperatures, thereby adjusting the overall temperature of the coating. The absorptivity of the coatings with different colors in the color development areas of the respective colors is increased, the yellow absorption color development wavelength is 480nm, and the blue absorption color development wavelength is 580 nm, but the energy of the sun in the yellow spectrum is greater than that of the blue spectrum, so that the coating absorbs the solar energy most when the coating is yellow, and the yellow coating can provide heat preservation when the external environment temperature is low in winter, thereby solving the problem that the existing radiation refrigeration material cannot change the working state in winter and still causes energy loss in the refrigeration state.
Comparative example 1
This comparative example provides a conventional radiation-cooled coating without the addition of a reversible color-changing material.
The difference between the comparative example and the example 1 is that the radiation cooling coating of the comparative example does not add reversible color-changing material, and the prepared radiation cooling coating is a white coating and can not change color.
Table 2 shows the measured coating temperatures at different ambient temperatures for the single-layer adaptive temperature-controlled radiation refrigeration coating prepared in example 1 and the normal white radiation refrigeration coating prepared in comparative example 1 when the coatings show different colors at different temperatures.
TABLE 2
As can be seen from the data in Table 2, the common white radiation refrigeration coating is always in a refrigeration state under different external environment temperatures, and the coating temperature is 3-4 ℃ lower than that of the external environment. The self-adaptive temperature radiation cooling coating prepared in the embodiment 1 is yellow and mainly absorbs solar energy when the external environment is lower than the color change temperature of the coating, so that the temperature of the coating is higher than the ambient temperature by 4 ℃, and when the external environment temperature is in the color change temperature range of the coating, the coating is blue and is equivalent to the external temperature; when the external environment temperature is higher than the discoloration temperature of the coating, the coating is white, mainly reflects and emits solar energy, and the temperature of the coating is 4 ℃ lower than the environment temperature. Therefore, the radiation refrigeration coating realizes self-adaptive temperature control, and is suitable for the fields of energy-saving buildings, thermal control of space detectors and the like.
Example 2
The embodiment provides a single-layer adaptive temperature-control radiation refrigeration coating with a triangular prism-shaped surface.
The single-layer adaptive temperature-control radiation refrigeration coating provided by the embodiment comprises the following components in parts by weight:
reversible color-changing material BiVO 42 parts of bismuth vanadate, and reflective particles BaSO with particle size distribution of 0.05-10 mu m420 parts of emitting particle SiO with particle size distribution of 2-30 μm 28 parts of particles, 60 parts of film-forming substrate water-based acrylic resin, 1.5 parts of film-forming auxiliary agent propylene glycol phenyl ether, 1 part of dispersant sodium polycarboxylate, 0.5 part of defoamer tributyl phosphate, 1.5 parts of thickener carboxymethyl cellulose, 0.5 part of leveling agent acrylate homopolymer and 5 parts of deionized water.
The preparation method of the single-layer self-adaptive temperature-control radiation cooling coating comprises the following steps: the materials are fully mixed, stirred and oscillated according to the proportion by a conventional method, so that different materials are uniformly dispersed into a film forming substrate, wherein deionized water is used for adjusting the viscosity of the coating, so that the coating with proper viscosity is obtained, and the construction is carried out in a rolling, brushing or spraying manner, so that the single-layer self-adaptive temperature-controlled radiation refrigeration coating with the thickness of 200-800 mu m is obtained.
After the obtained coating is surface-dried, the surface of the coating is molded through a mold, so that the surface of the coating has a triangular prism structure, the temperature control effect of the radiation refrigeration coating can be effectively improved, and the surface of the coating has potential hydrophobic performance.
FIG. 5 is a graph comparing the spectral (0.3-2.5 μm) reflectance of single layer adaptive temperature controlled radiation chilling coatings prepared in examples 1 and 2; FIG. 6 is a graph of spectral (8-13 μm) emissivity contrast for single layer adaptive temperature controlled radiation chilling coatings prepared in examples 1 and 2; as can be seen from a comparison of both FIGS. 5 and 6, the solar radiation (0.3-2.5 μm) and spectral emissivity (8.0-13.0 μm) of the coating having a triangular prism-shaped structure on the surface are superior to the coating having a flat surface.
Table 3 compares the average spectral properties of the surface plane and the triangular prism type single layer adaptive temperature radiation refrigeration coating.
TABLE 3
| Surface state | RSolar(0.3-2.5μm) | εIR(8-13μm) |
| Planar structure | 0.92 | 0.94 |
| Moulding surface | 0.95 | 0.97 |
R in Table 3Solar(0.3-2.5 μm) represents the reflectance of the entire solar band,IRAverage emissivity in the 8-13 μm band (8-13 μm). As can be seen from the comparison of the data in Table 3, the emissivity and the average emissivity of the modeling surface in the solar spectrum wave band and the atmospheric window wave band (8-13 μm) are superior to those of the plane structure.
Table 4 shows the temperature contrast data of the coating layer when the planar structure single-layer adaptive temperature-controlled radiation refrigeration coating layer prepared in example 1 and the plastic surface single-layer adaptive temperature-controlled radiation refrigeration coating layer prepared in example 2 show different colors at different temperatures.
TABLE 4
As can be seen from the comparison of the data in Table 4, the refrigeration and thermal insulation effects of the coating after surface molding are obviously better than those of the coating with a planar structure, because the surface area of the coating is increased by the molding, so that the efficiency of reflecting, emitting or absorbing solar radiation of the coating is higher.
Example 3
The embodiment provides a double-layer self-adaptive temperature-control radiation refrigeration coating, which comprises a radiation refrigeration layer and a phase change layer coated on the radiation refrigeration layer.
The radiation refrigerating layer comprises reflective BaSO particles with a particle size distribution of 0.05-10 μm 420 parts of emitting particle SiO with particle size distribution of 2-30 μm 28 parts of particles, 60 parts of film-forming substrate water-based acrylic resin, 1.5 parts of film-forming additive propylene glycol phenyl ether, 1 part of dispersant sodium polycarboxylate, 0.5 part of defoamer tributyl phosphate, 1.5 parts of thickener carboxymethyl cellulose, and leveling agent propyl0.5 part of alkenoic acid ester homopolymer and 5 parts of deionized water.
The phase change layer comprises the following components in percentage by volume: 20% VO2Composite phase change material and 80% film forming base water-based acrylic resin.
VO of this example2The preparation method of the composite phase-change material comprises the following steps:
VO2as a phase change material, the phase change temperature is 70 ℃, and the material needs to be converted into VO2The phase transition temperature of the particles with large radius or high valence state is adjusted, so that the self-adaptive temperature-control radiation refrigeration coating is suitable for the self-adaptive temperature-control radiation refrigeration coating of the embodiment. As can be seen from the experiment, 1 at% of Na was added on average2WO4，VO2The phase transition temperature of the composite phase-change material is reduced by 27.4 ℃, so that the embodiment converts the phase-change material into VO2Is doped with 1.65 at% of Na2WO4VO with the phase transition point temperature of 25 ℃ is obtained2A composite phase change material.
VO2The preparation method of the composite phase-change material comprises the following steps: according to VO2Is doped with 1.65 at% of Na2WO4Prepared VOSO4·x H2O and Na2WO4Starting with VOSO4·x H2Dissolving O in distilled water, stirring for 15min, adding Na2WO4Stirring for 15 min; NaHCO was pumped at 100m L/h using a syringe pump3Dropping the solution into the VOSO under continuous stirring4And Na2WO4And (4) in the mixed aqueous solution, controlling the pH value to be between 6 and 7 by using a pH meter, and stopping dripping. Placing the obtained mixture in a muffle furnace, heating the temperature in the muffle furnace to 100 ℃, preserving heat for 30min, heating to 300 ℃, preserving heat for 30min, heating to 500 ℃, preserving heat for 30min, heating to 800 ℃, preserving heat for 3h, and naturally cooling to room temperature under the protection of nitrogen to obtain Na2WO4VO with doping amount of 1.65 at%2Powder, i.e. VO having a transformation point temperature of 25 ℃2A composite phase change material.
The preparation method of the double-layer self-adaptive temperature-control radiation cooling coating comprises the following steps: mixing, stirring and oscillating the materials according to the proportion by a conventional method to uniformly disperse different materials into a film forming substrate, wherein deionized water is used forAdjusting the viscosity of the coating to obtain a coating with proper viscosity, and constructing in a rolling, brushing or spraying mode to obtain a radiation refrigerating layer with the thickness of 200-800 mu m; mixing 20% VO by volume fraction2And uniformly mixing the composite phase change material and 80% of film-forming matrix water-based acrylic resin, and coating the mixture on the surface of the cured radiation refrigerating layer to obtain a phase change layer with the thickness of 50-300 mu m.
Fig. 7 is a schematic cross-sectional view of a double-layer adaptive temperature-control radiation-cooled coating prepared according to the present embodiment. The phase change temperature of the phase change layer used in this example was 25 ℃. When the temperature of the external environment is higher than 25 ℃, the phase change layer is in a transparent state, the radiation refrigeration layer reflects solar spectrum energy in a solar spectrum waveband, meanwhile, the heat dissipation power to the space is increased at high emissivity in an atmospheric window waveband, and the average emissivity can reach 90%; when the temperature of the external environment is lower than 25 ℃, the phase change layer is in a non-transparent state, the radiation refrigeration layer absorbs solar spectrum energy in a solar spectrum wave band, meanwhile, the heat dissipation power to the space is reduced at a low emissivity in an atmospheric window wave band, and the average emissivity is only 30%.
Table 5 shows the measured coating temperatures of the two-layer adaptive temperature-adaptive radiation-cooled coating prepared in this example and the ordinary white radiation-cooled coating prepared in comparative example 1at different ambient temperatures.
TABLE 5
As can be seen from the comparison of the data in Table 5, when the external environment temperature is lower than the phase transition temperature of the phase transition layer by 25 ℃, the phase transition layer is in a light blue opaque state, the radiation refrigeration layer absorbs the solar spectrum energy in the solar spectrum wave band, and simultaneously the heat dissipation power to the space is reduced at low emissivity in the atmospheric window wave band, so that the temperature of the coating is higher than the external environment temperature, and the heat preservation effect in winter is realized; when the external environment temperature is 25 ℃ higher than the phase change temperature of the phase change layer, the phase change layer is in a transparent state, the radiation refrigeration layer reflects solar spectrum energy in a solar spectrum wave band, and meanwhile, the heat dissipation power to the space is increased by high emissivity in an atmospheric window wave band, so that the temperature of the coating is lower than the external environment temperature, and the effect of refrigeration in summer is realized. The temperature of the common radiation refrigeration coating without the phase change layer is always lower than the temperature of the external environment, and the self-adaptive temperature control effect cannot be realized.
Example 4
The embodiment provides a monolayer self-adaptive temperature-control radiation refrigeration coating with a pyramid-shaped surface.
The single-layer adaptive temperature-control radiation refrigeration coating provided by the embodiment comprises the following components in parts by weight:
reversible color-changing material PbCrO45 parts of reflective TiO particles with a particle size distribution of 0.05-10 μm215 parts of emissive particles Si with particle size distribution of 2-30 μm3N410 parts of particles, 55 parts of film-forming substrate water-based epoxy resin, 1.0 part of film-forming auxiliary agent ethylene glycol monobutyl ether, 2 parts of dispersant sulfate, 0.1 part of polyether defoamer, 1 part of thickener hydroxyethyl cellulose, 0.2 part of flatting agent cellulose acetate butyrate and 8 parts of deionized water.
The preparation method of the single-layer self-adaptive temperature-control radiation cooling coating comprises the following steps: the materials are fully mixed, stirred and oscillated according to the proportion by a conventional method, so that different materials are uniformly dispersed into a film forming substrate, wherein deionized water is used for adjusting the viscosity of the coating, so that the coating with proper viscosity is obtained, and the construction is carried out in a rolling, brushing or spraying manner, so that the single-layer self-adaptive temperature-controlled radiation refrigeration coating with the thickness of 200-800 mu m is obtained.
After the surface of the obtained coating is dried, the surface of the coating is molded through a mold, so that the surface of the coating has a pyramid structure, the temperature control effect of the radiation refrigeration coating can be effectively improved, and the surface of the coating has potential hydrophobic performance.
Table 6 shows the measured coating temperatures at different ambient temperatures for the single layer adaptive temperature controlled radiation refrigeration coating prepared in this example and the conventional white radiation refrigeration coating prepared in comparative example 1 in different colors.
TABLE 6
The color-changing temperature of the single-layer self-adaptive temperature-control radiation cooling coating in the embodiment is 24-26 ℃, and when the external environment temperature is lower than 24 ℃, the reversible thermochromic material PbCrO in the coating4The coating is yellow, so that the solar radiation is mainly absorbed, and the heat insulation effect is realized; when the external environment is within the range of 24-26 ℃, the coating is blue, so that the temperature of the coating is basically the same as that of the environment; when the external environment temperature is higher than 26 ℃, the coating is white, mainly reflects solar radiation, and realizes the refrigeration effect.
Example 5
The embodiment provides a monolayer self-adaptive temperature-control radiation refrigeration coating with the surface being molded into a natural wrinkling structure.
The single-layer adaptive temperature-control radiation refrigeration coating provided by the embodiment comprises the following components in parts by weight:
10 parts of triarylmethane phthalide reversible color-changing material crystal violet lactone, and reflective particle CaCO with particle size distribution of 0.05-10 μm330 parts of particles, 20 parts of emission type particle SiC particles with the particle size distribution of 2-30 mu m, 40 parts of film-forming substrate water-based organic silicon resin, 0.5 part of film-forming auxiliary agent benzyl alcohol, 3 parts of dispersant alkyl quaternary ammonium salt, 0.3 part of organic silicon defoamer, 0.5 part of thickener methyl cellulose, 0.1 part of flatting agent diphenyl polysiloxane and 20 parts of deionized water.
The preparation method of the single-layer self-adaptive temperature-control radiation cooling coating comprises the following steps: the materials are fully mixed, stirred and oscillated according to the proportion by a conventional method, so that different materials are uniformly dispersed into a film forming substrate, wherein deionized water is used for adjusting the viscosity of the coating, so that the coating with proper viscosity is obtained, and the construction is carried out in a rolling, brushing or spraying manner, so that the single-layer self-adaptive temperature-controlled radiation refrigeration coating with the thickness of 200-800 mu m is obtained.
After the surface of the obtained coating is dried, the surface of the coating is molded through a mold, so that the surface of the coating has a natural wrinkling structure, the temperature control effect of the radiation refrigeration coating can be effectively improved, and the surface of the coating has potential hydrophobic performance.
Table 7 shows the measured coating temperatures at different ambient temperatures for the single layer adaptive temperature controlled radiation refrigeration coating prepared in this example and the conventional white radiation refrigeration coating prepared in comparative example 1 in different colors.
TABLE 7
The color change temperature of the single-layer self-adaptive temperature-control radiation cooling coating is 24-26 ℃, when the external environment temperature is lower than 24 ℃, the reversible thermochromic material crystal violet lactone in the coating enables the coating to be blue-violet, so that the coating mainly absorbs solar radiation, and the heat preservation effect is realized; when the external environment is within the range of 24-26 ℃, the coating is blue, so that the temperature of the coating is basically the same as that of the environment; when the external environment temperature is higher than 26 ℃, the coating is white, mainly reflects solar radiation, and realizes the refrigeration effect.
Example 6
The embodiment provides a double-layer self-adaptive temperature-control radiation refrigeration coating, which comprises a radiation refrigeration layer and a phase change layer coated on the radiation refrigeration layer.
The radiation cooling layer comprises reflective SiO particles with a particle size distribution of 0.05-10 μm225 parts of particles, 15 parts of emission type particle SiC particles with the particle size distribution of 2-30 mu m, 50 parts of film forming matrix water-based phenolic resin, 1.2 parts of film forming auxiliary agent dodecyl alcohol ester, 1.5 parts of dispersing agent aminopropylamine dioleate, 0.2 part of polyether defoamer, 0.8 part of thickening agent hydroxypropyl methyl cellulose, 0.4 part of flatting agent methyl phenyl polysiloxane and 15 parts of deionized water.
The phase change layer comprises the following components in percentage by volume: 15% phase change material Na2SO4·10H2O and 85% of film forming base water-based acrylic resin.
The preparation method of the double-layer self-adaptive temperature-control radiation cooling coating comprises the following steps: mixing, stirring and oscillating the materials according to the proportion by a conventional method to uniformly disperse different materials into a film forming substrateThe deionized water is used for adjusting the viscosity of the coating to obtain the coating with proper viscosity, and construction is carried out in a rolling coating, brushing coating or spraying manner to obtain a radiation refrigerating layer with the thickness of 200-800 mu m; mixing 20% of Na by volume fraction2SO4·10H2And uniformly mixing the O phase change material and 80% of film-forming matrix water-based acrylic resin, and coating the mixture on the surface of the cured radiation refrigerating layer to obtain the phase change layer with the thickness of 50-300 mu m.
Table 8 is a schematic cross-sectional view of the dual-layer adaptive temperature-controlled radiation-cooled coating prepared in this example. The phase change temperature of the phase change layer used in this example was 25 ℃. When the temperature of the external environment is higher than 25 ℃, the phase change layer is in a transparent state, the radiation refrigeration layer reflects solar spectrum energy in a solar spectrum waveband, meanwhile, the heat dissipation power to the space is increased at the atmospheric window waveband by high emissivity, and the average reflectivity can reach 90%; when the temperature of the external environment is lower than 25 ℃, the phase change layer is in a non-transparent state, the radiation refrigeration layer absorbs solar spectrum energy in a solar spectrum wave band, meanwhile, the heat dissipation power to the space is reduced at a low emissivity in an atmospheric window wave band, and the average reflectivity is only 60%.
Table 8 shows the measured coating temperatures of the two-layer adaptive temperature-adaptive radiation-cooled coating prepared in this example and the ordinary white radiation-cooled coating prepared in comparative example 1at different ambient temperatures.
TABLE 8
The phase change temperature of the phase change layer used in this example was 25 ℃. When the external environment temperature is higher than 25 ℃, the phase change layer is in a transparent state, the radiation refrigeration layer reflects solar spectrum energy in a solar spectrum waveband, meanwhile, the heat dissipation power to the space is increased at an atmospheric window waveband by high emissivity, and the average reflectivity can reach 90 percent, so that the temperature of the coating is lower than the external environment temperature, and the effect of refrigeration in summer is realized. When the temperature of the external environment is lower than 25 ℃, the phase change layer is in a non-transparent state, the radiation refrigeration layer absorbs solar spectrum energy in a solar spectrum waveband, meanwhile, the heat dissipation power to the space is reduced at a low emissivity in an atmospheric window waveband, and the average reflectivity is only 60%, so that the temperature of the coating is higher than the temperature of the external environment, and the heat preservation effect in winter is realized. The temperature of the common radiation refrigeration coating without the phase change layer is always lower than the temperature of the external environment, and the self-adaptive temperature control effect cannot be realized.
Example 7
The present embodiment provides a single layer adaptive temperature controlled radiation refrigeration coating.
The single-layer adaptive temperature-control radiation refrigeration coating provided by the embodiment comprises the following components in parts by weight:
10 parts of triphenylmethane reversible color-changing material bromocresol green, and reflective particle CaCO with particle size distribution of 0.05-10 mu m330 parts of particles, 20 parts of emission type particle SiC particles with the particle size distribution of 2-30 mu m, 40 parts of film-forming substrate water-based organic silicon resin, 0.5 part of film-forming auxiliary agent benzyl alcohol, 3 parts of dispersant alkyl quaternary ammonium salt, 0.3 part of organic silicon defoamer, 0.5 part of thickener methyl cellulose, 0.1 part of flatting agent diphenyl polysiloxane and 20 parts of deionized water.
The preparation method of the single-layer self-adaptive temperature-control radiation cooling coating comprises the following steps: the materials are fully mixed, stirred and oscillated according to the proportion by a conventional method, so that different materials are uniformly dispersed into a film forming substrate, wherein deionized water is used for adjusting the viscosity of the coating, so that the coating with proper viscosity is obtained, and the construction is carried out in a rolling, brushing or spraying manner, so that the single-layer self-adaptive temperature-controlled radiation refrigeration coating with the thickness of 200-800 mu m is obtained.
The color-changing temperature of the single-layer self-adaptive temperature-control radiation cooling coating is 24-26 ℃, when the external environment temperature is lower than 24 ℃, the reversible thermochromic material bromocresol green in the coating enables the coating to be green, mainly absorbs solar radiation, and the heat-preservation effect is achieved; when the external environment is within the range of 24-26 ℃, the coating is light green, so that the temperature of the coating is basically the same as that of the environment; when the external environment temperature is higher than 26 ℃, the coating is white, mainly reflects solar radiation, and realizes the refrigeration effect.
Claims (10)
1. The self-adaptive temperature-adaptive radiation refrigeration coating is characterized by being a single-layer self-adaptive temperature-adaptive radiation refrigeration coating or a double-layer self-adaptive temperature-adaptive radiation refrigeration coating:
the single-layer self-adaptive temperature-control radiation refrigeration coating comprises the following components in parts by weight: 2-10 parts of reversible thermochromic material, 15-30 parts of reflective particles, 5-20 parts of emission particles, 40-60 parts of film forming matrix, 0.5-1.5 parts of film forming additive, 1-3 parts of dispersing agent, 0.1-0.5 part of defoaming agent, 0.5-2 parts of thickening agent, 0.1-0.5 part of flatting agent and 0-20 parts of deionized water;
the double-layer self-adaptive temperature control radiation refrigeration coating comprises a radiation refrigeration layer and a phase change layer coated on the radiation refrigeration layer, wherein the radiation refrigeration layer comprises the following components in parts by weight: 15-30 parts of reflection-type particles, 10-20 parts of emission-type particles, 40-60 parts of film-forming matrix, 0.5-1.5 parts of film-forming assistant, 1-3 parts of dispersing agent, 0.1-0.5 part of defoaming agent, 0.5-2 parts of thickening agent, 0.1-0.5 part of flatting agent and 0-20 parts of deionized water; the phase change layer comprises the following components in percentage by volume: 10-20% of phase change material and 80-90% of film forming matrix.
2. The adaptive temperature-controlled radiation refrigeration coating according to claim 1, wherein the color change temperature range of the single-layer adaptive temperature-controlled radiation refrigeration coating is 20-50 ℃, and the phase change temperature range of the phase change layer in the double-layer adaptive temperature-controlled radiation refrigeration coating is 15-42 ℃.
3. The adaptive temperature-adaptive radiation cooling coating according to claim 1 or 2, wherein the reversible thermochromic material is an inorganic reversible thermochromic material or an organic reversible thermochromic material, wherein the inorganic reversible thermochromic material is one of vanadate, chromate or tungstate, and the organic reversible thermochromic material is one of triarylmethane phthalide, triphenylmethane or spiropyran reversible thermochromic materials.
4. According to the rightThe adaptive temperature-control radiation refrigeration coating according to claim 1, wherein the phase-change material is VO2Composite phase change material or Na2SO4·10H2One of O; wherein VO2The composite phase-change material is Na2WO4VO with doping amount of 1.0-2.0 at%2And (3) powder.
5. The adaptive temperature-controlled radiation cooling coating as claimed in claim 4, wherein the reflective particles are TiO particles with a particle size distribution of 0.05-10 μm2、CaCO3、BaSO4、SiO2Or one or a combination of more of mica powder; the emission type particles are SiO with the particle size distribution of 2-30 μm2、Si3N4Or one or a combination of more of SiC, and the emissivity of the emission type particles in an atmospheric window of 8-13 mu m wave band is not lower than 90%.
6. The adaptive temperature-controlled radiation refrigeration coating according to claim 5, wherein the film-forming matrix is one of an aqueous resin, a coupling agent or polyvinylidene fluoride combined with N-methyl pyrrolidone; wherein the water-based resin is one or a combination of more of water-based acrylic resin, water-based epoxy resin, water-based organic silicon resin, water-based phenolic resin, water-based amino resin, water-based alkyd resin or water-based polyester resin, and the coupling agent is gamma-aminopropyltriethoxysilane.
7. The adaptive temperature-adaptive radiation cooling coating as claimed in claim 6, wherein the film forming aid is one or more of propylene glycol phenyl ether, ethylene glycol butyl ether, benzyl alcohol, ethylene glycol phenyl ether or dodecyl alcohol ester; the dispersant is one or a combination of more of sodium polycarboxylate, sulfate, alkyl quaternary ammonium salt, aminopropylamine dioleate, fatty acid ethylene oxide addition product, phosphate type high molecular polymer or oil aminooleate; the defoaming agent is one or a combination of a plurality of tributyl phosphate, polyether defoaming agent or organic silicon defoaming agent; the thickening agent is one or a combination of more of carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose or hydroxypropyl methyl cellulose; the leveling agent is one or a combination of more of acrylate homopolymer or copolymer, cellulose acetate butyrate, organic silicon, diphenyl polysiloxane, methyl phenyl polysiloxane, organic modified siloxane or acrylic acid.
8. The adaptive temperature-controlled radiation cooling coating of claim 7, wherein the surface of the single-layer adaptive temperature-controlled radiation cooling coating is shaped to have a triangular prism, pyramid or bionic natural corrugation structure.
9. The adaptive temperature-controlled radiation refrigeration coating according to claim 8, wherein the thickness of the single-layer adaptive temperature-controlled radiation refrigeration coating is 200-800 μm; the thickness of the radiation refrigerating layer of the double-layer self-adaptive temperature control radiation refrigerating coating is 200-800 mu m, and the thickness of the phase change layer is 50-300 mu m.
10. Use of the adaptive temperature radiation refrigeration coating according to any one of claims 1 to 9 in the field of thermal management of energy saving buildings, space probes, outdoor power electronics, personal thermal management.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011069312.XA CN112175458A (en) | 2020-09-30 | 2020-09-30 | Self-adaptive temperature-control radiation refrigeration coating and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011069312.XA CN112175458A (en) | 2020-09-30 | 2020-09-30 | Self-adaptive temperature-control radiation refrigeration coating and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112175458A true CN112175458A (en) | 2021-01-05 |
Family
ID=73948500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011069312.XA Pending CN112175458A (en) | 2020-09-30 | 2020-09-30 | Self-adaptive temperature-control radiation refrigeration coating and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112175458A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262971A (en) * | 2021-05-12 | 2021-08-17 | 上海戎科特种装备有限公司 | Intelligent temperature control material and preparation method and application thereof |
| CN113419580A (en) * | 2021-06-29 | 2021-09-21 | 武汉理工大学 | Intelligent temperature control device based on passive radiation cooling and solar heating and preparation method thereof |
| CN113622793A (en) * | 2021-09-01 | 2021-11-09 | 电子科技大学 | Self-adaptive temperature management device and preparation method thereof |
| CN114016300A (en) * | 2021-11-24 | 2022-02-08 | 浙江理工大学 | Coated textile with passive radiation cooling function and preparation method thereof |
| CN114196268A (en) * | 2022-01-06 | 2022-03-18 | 吴景秀 | Radiation refrigeration coating containing high-refractive-index-difference particle combination and preparation method and application thereof |
| CN114456436A (en) * | 2022-01-07 | 2022-05-10 | 中国人民解放军国防科技大学 | Energy-consumption-free self-adaptive temperature-control coating material and preparation method and application thereof |
| CN114506136A (en) * | 2022-02-24 | 2022-05-17 | 哈尔滨工业大学（威海） | Intelligent radiation refrigeration composite membrane with temperature adaptivity and heat insulation and preservation functions and preparation method and application thereof |
| CN114536901A (en) * | 2022-02-24 | 2022-05-27 | 哈尔滨工业大学（威海） | Separated flexible intelligent radiant heat control composite membrane with temperature adaptability and preparation method and application thereof |
| CN114541132A (en) * | 2022-03-08 | 2022-05-27 | 哈尔滨工业大学（威海） | High-flexibility stretch-resistant breathable bionic human skin radiation refrigeration fabric and preparation method thereof |
| CN114656851A (en) * | 2022-04-20 | 2022-06-24 | 哈尔滨工业大学（威海） | Low-cost daytime radiation refrigeration coating with complementary spectral bands and preparation method and application thereof |
| CN115141520A (en) * | 2022-06-23 | 2022-10-04 | 南京工业大学 | Temperature response thermochromic radiation cooler and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214905A (en) * | 2013-04-17 | 2013-07-24 | 浙江大学 | Thermochromic heat insulation coating and preparation method thereof |
| CN110896639A (en) * | 2019-07-05 | 2020-03-20 | 宁波瑞凌新能源科技有限公司 | Radiation refrigeration functional coating and application thereof |
| CN111378189A (en) * | 2020-01-19 | 2020-07-07 | 天津大学 | Intelligent temperature adjusting material based on radiation cooling and preparation method thereof |
| CN111393915A (en) * | 2020-03-23 | 2020-07-10 | 上海大学 | Passive radiation refrigeration composite material layer and preparation method thereof |
| CN111578044A (en) * | 2020-05-18 | 2020-08-25 | 江南大学 | Functional heat-insulating composite material and preparation method thereof |
-
2020
- 2020-09-30 CN CN202011069312.XA patent/CN112175458A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214905A (en) * | 2013-04-17 | 2013-07-24 | 浙江大学 | Thermochromic heat insulation coating and preparation method thereof |
| CN110896639A (en) * | 2019-07-05 | 2020-03-20 | 宁波瑞凌新能源科技有限公司 | Radiation refrigeration functional coating and application thereof |
| CN111378189A (en) * | 2020-01-19 | 2020-07-07 | 天津大学 | Intelligent temperature adjusting material based on radiation cooling and preparation method thereof |
| CN111393915A (en) * | 2020-03-23 | 2020-07-10 | 上海大学 | Passive radiation refrigeration composite material layer and preparation method thereof |
| CN111578044A (en) * | 2020-05-18 | 2020-08-25 | 江南大学 | Functional heat-insulating composite material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 徐怀平: "《远红外加热技术》", 28 February 1979 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262971A (en) * | 2021-05-12 | 2021-08-17 | 上海戎科特种装备有限公司 | Intelligent temperature control material and preparation method and application thereof |
| CN113419580B (en) * | 2021-06-29 | 2022-06-24 | 武汉理工大学 | Intelligent temperature control device based on passive radiation cooling and solar heating and preparation method thereof |
| CN113419580A (en) * | 2021-06-29 | 2021-09-21 | 武汉理工大学 | Intelligent temperature control device based on passive radiation cooling and solar heating and preparation method thereof |
| CN113622793A (en) * | 2021-09-01 | 2021-11-09 | 电子科技大学 | Self-adaptive temperature management device and preparation method thereof |
| CN114016300A (en) * | 2021-11-24 | 2022-02-08 | 浙江理工大学 | Coated textile with passive radiation cooling function and preparation method thereof |
| CN114016300B (en) * | 2021-11-24 | 2024-02-02 | 浙江理工大学 | Coated textile with passive radiation cooling function and preparation method thereof |
| CN114196268A (en) * | 2022-01-06 | 2022-03-18 | 吴景秀 | Radiation refrigeration coating containing high-refractive-index-difference particle combination and preparation method and application thereof |
| CN114456436B (en) * | 2022-01-07 | 2023-04-07 | 中国人民解放军国防科技大学 | Energy-consumption-free self-adaptive temperature-control coating material and preparation method and application thereof |
| CN114456436A (en) * | 2022-01-07 | 2022-05-10 | 中国人民解放军国防科技大学 | Energy-consumption-free self-adaptive temperature-control coating material and preparation method and application thereof |
| CN114536901A (en) * | 2022-02-24 | 2022-05-27 | 哈尔滨工业大学（威海） | Separated flexible intelligent radiant heat control composite membrane with temperature adaptability and preparation method and application thereof |
| CN114506136A (en) * | 2022-02-24 | 2022-05-17 | 哈尔滨工业大学（威海） | Intelligent radiation refrigeration composite membrane with temperature adaptivity and heat insulation and preservation functions and preparation method and application thereof |
| CN114506136B (en) * | 2022-02-24 | 2023-08-18 | 哈尔滨工业大学（威海） | Intelligent radiation refrigeration composite film with temperature self-adaption and heat insulation functions and preparation method and application thereof |
| CN114536901B (en) * | 2022-02-24 | 2023-08-18 | 哈尔滨工业大学（威海） | Separated flexible intelligent radiation heat control composite film with temperature self-adaption and preparation method and application thereof |
| CN114541132A (en) * | 2022-03-08 | 2022-05-27 | 哈尔滨工业大学（威海） | High-flexibility stretch-resistant breathable bionic human skin radiation refrigeration fabric and preparation method thereof |
| CN114656851A (en) * | 2022-04-20 | 2022-06-24 | 哈尔滨工业大学（威海） | Low-cost daytime radiation refrigeration coating with complementary spectral bands and preparation method and application thereof |
| CN114656851B (en) * | 2022-04-20 | 2024-03-08 | 哈尔滨工业大学（威海） | Low-cost daytime radiation refrigeration coating with complementary spectral bands and preparation method and application thereof |
| CN115141520A (en) * | 2022-06-23 | 2022-10-04 | 南京工业大学 | Temperature response thermochromic radiation cooler and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112175458A (en) | Self-adaptive temperature-control radiation refrigeration coating and application thereof | |
| Mandal et al. | Paints as a scalable and effective radiative cooling technology for buildings | |
| EP3954741B1 (en) | Radiative cooling device | |
| CN207965438U (en) | A kind of multi-functional compound glass | |
| CN113292874A (en) | Passive radiation refrigeration coating, preparation method thereof and coating structure | |
| WO2021120706A1 (en) | Passive cooling/heating double-effect material | |
| CN113278331B (en) | Self-cleaning passive radiation refrigeration coating, preparation method thereof and coating structure | |
| Zhou et al. | Colorful surfaces for radiative cooling | |
| CN109341137A (en) | Passive refrigeration structure based on photonic crystal | |
| CN110171809B (en) | Aluminum phosphate uniform powder material for radiation refrigeration and preparation method thereof | |
| CN113105765B (en) | Intelligent heat-insulating composite coating with high visible light transmittance and preparation method thereof | |
| CN111550157A (en) | Novel thermal discoloration intelligent window with adjustable emissivity | |
| CN114736566B (en) | Super-hydrophobic self-cleaning temperature self-adaptive radiation cooling coating and preparation method thereof | |
| Dang et al. | Color-preserving daytime passive radiative cooling based on Fe3+-doped Y2Ce2O7 | |
| CN104669745A (en) | Photonic crystal-based environment-friendly refrigeration sticker for buildings | |
| KR20200065132A (en) | Metal Doped Vanadium Dioxide Hydrogel for Smart window | |
| Ye et al. | Thermal insulation coatings in energy saving | |
| CN115772351B (en) | Passive radiation refrigerating material, preparation method and application | |
| CN115365097B (en) | Colored passive radiation refrigeration fabric and preparation method thereof | |
| CN113388305B (en) | Radiation refrigeration composite coating with structural color, application and preparation method | |
| CN212837341U (en) | Novel thermal discoloration intelligent window with adjustable emissivity | |
| CN111471359A (en) | Preparation method and application of broad-spectrum high-emission particle material | |
| Xing et al. | Recent progress in color-preserving radiative cooling: Multispectral control in visible and infrared wavelength | |
| CN115651243B (en) | Heat self-regulating radiation cooling film and manufacturing method and application thereof | |
| CN108546458B (en) | Composite coating with photothermal conversion capability capable of changing along with environmental temperature and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |