CN115558351A - Method for improving radiation refrigeration performance of radiation refrigeration coating - Google Patents
Method for improving radiation refrigeration performance of radiation refrigeration coating Download PDFInfo
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 179
- 230000005855 radiation Effects 0.000 title claims abstract description 176
- 238000000576 coating method Methods 0.000 title claims abstract description 132
- 239000011248 coating agent Substances 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000000945 filler Substances 0.000 claims abstract description 44
- 239000011521 glass Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 11
- 238000005266 casting Methods 0.000 claims abstract description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- 239000004925 Acrylic resin Substances 0.000 claims description 21
- 229920000178 Acrylic resin Polymers 0.000 claims description 21
- 239000000839 emulsion Substances 0.000 claims description 21
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 21
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 21
- 239000002994 raw material Substances 0.000 claims description 21
- 239000011247 coating layer Substances 0.000 claims description 15
- 239000010410 layer Substances 0.000 claims description 15
- 239000004408 titanium dioxide Substances 0.000 claims description 12
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000000052 comparative effect Effects 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000002835 absorbance Methods 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
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- 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
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
- C03C17/008—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28
- C03C17/009—Mixtures of organic and inorganic materials, e.g. ormosils and ormocers
-
- 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
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
The invention provides a method for improving radiation refrigeration performance of a radiation refrigeration coating, which comprises the following steps: (a) Preparing at least three radiation refrigeration functional coatings with different filler contents; (b) Sequentially coating the radiation refrigeration functional coating on the surface of glass, and drying to obtain a glass product coated with a plurality of layers of radiation refrigeration films; or respectively extruding to obtain casting materials to be sequentially laminated on the surface of the glass to obtain a glass product coated with the casting materials; the filler content in the multiple layers of radiation refrigeration films is reduced from inside to outside in sequence. Therefore, the reflection of the filler to light and the radiation to heat can be fully utilized, and the radiation refrigeration effect is improved.
Description
Technical Field
The invention belongs to the technical field of special coatings, relates to a radiation refrigeration coating, and particularly relates to a method for improving the radiation refrigeration performance of the radiation refrigeration coating.
Background
The radiation refrigeration is to establish a radiation heat transfer channel by taking the space as a cold source and taking objects on the ground as a heat source, and directly transfer the heat of the objects on the ground to the space by an electromagnetic wave radiation mode of a specific wave band through an 'atmosphere transparent window' under the condition of not consuming energy, thereby achieving the purpose of refrigeration. And water vapor has two strong absorption bands for the radiation emitted from the surface: one is 4.5 to 8.0 micrometers, and the other is in a far infrared region of more than 18 micrometers; the radiation absorption of the atmosphere to the wave band of 8 to 13 microns is very small, and the wave band is the 'atmosphere transparent window'.
The Chinese invention patent with the application number of 201810974672.0 discloses a reflective radiation refrigeration film, which comprises a coating layer, a metal layer, a transparent polyester PET layer, an adhesive tape and a release protection film, which are sequentially arranged, wherein the coating layer comprises an organic acrylic coating and a micrometer sphere, and the micrometer sphere is one of SiC, siO, tiO, baSO and CaCO; the metal layer is deposited on the transparent polyester PET layer by a magnetron sputtering method; the ratio of the thickness of each layer to the total thickness of the radiation refrigeration film is as follows: coating layer: 2% -10%, metal layer: 0.01% -0.1%, transparent polyester PET:14.9% -87.99%, adhesive filling: 5% -40%, release protective film: 5% -35%. The radiation refrigeration film prepared in the application needs to form a metal film layer on the refrigeration film by methods such as magnetron sputtering, so that the prepared refrigeration film has poor refrigeration effect, the process is complex, the cost is high, and the metal film layer is easy to oxidize and lose efficacy.
The Chinese patent with application number 202010984805.X discloses a radiation refrigeration film, a preparation method and a product. The radiation refrigeration film can obtain the radiation refrigeration film with good refrigeration effect without additionally processing and forming a metal film layer on the radiation refrigeration film through the laminated arrangement of the first reflection layer, the radiation refrigeration functional layer and the second reflection layer. The product has good refrigerating effect, but still has a lifting space.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a method for improving the radiation refrigeration performance of a radiation refrigeration coating.
In order to achieve the technical purpose, the invention provides a method for improving the radiation refrigeration performance of a radiation refrigeration coating, which comprises the following steps:
(a) Preparing at least three radiation refrigeration functional coatings with different filler contents;
(b) Sequentially coating the radiation refrigeration functional coating on the surface of glass, and drying to obtain a glass product coated with a plurality of layers of radiation refrigeration films; or respectively extruding the casting materials to form the casting materials on the surface of the glass in a sequentially laminated manner to obtain the glass product coated with the casting materials; the filler content in the multiple layers of radiation refrigeration films is reduced from inside to outside in sequence.
Optimally, in the step (a), the radiation refrigeration functional coating comprises three types, and the mass fractions of the filler are respectively 3 to 5%, 6 to 10% and 12 to 15%.
Further, in the step (a), the three radiation refrigeration functional coatings are a first radiation refrigeration functional coating, a second radiation refrigeration functional coating and a third radiation refrigeration functional coating,
the first radiation refrigeration functional coating comprises the following raw material components in percentage by mass:
94 to 96.5 percent of acrylic resin;
3 to 5 percent of filler;
0.5 to 1 percent of ethylene-vinyl acetate copolymer emulsion;
the second radiation refrigeration functional coating comprises the following raw material components in percentage by mass:
89 to 93.5 percent of acrylic resin;
6 to 10 percent of filler;
0.5 to 1 percent of ethylene-vinyl acetate copolymer emulsion;
the third radiation refrigeration functional coating comprises the following raw material components in percentage by mass:
84 to 87.5 percent of acrylic resin;
12 to 15 percent of filler;
0.5 to 1 percent of ethylene-vinyl acetate copolymer emulsion;
the filler is a mixture of silicon dioxide and rutile titanium dioxide according to the mass ratio of 1; the particle size of the titanium dioxide is 0.2 to 20 mu m.
Further, in the step (b), when a coating process is adopted, the radiation refrigeration functional coating is dispersed by water, and the mass ratio of the water to the radiation refrigeration functional coating is 0.5-1: 1.
optimally, in the step (b), the drying temperature is 30-50 ℃.
Further, the first radiation refrigeration functional coating, the second radiation refrigeration functional coating and the third radiation refrigeration functional coating respectively form a first radiation refrigeration functional coating, a second radiation refrigeration functional coating and a third radiation refrigeration functional coating, and the thicknesses of the first radiation refrigeration functional coating, the second radiation refrigeration functional coating and the third radiation refrigeration functional coating are independent of each other and are 10-100 mu m.
The invention creatively provides that compared with the prior art, the invention has the following advantages: according to the method for improving the radiation refrigeration performance of the radiation refrigeration coating, the radiation refrigeration functional coating with different filler contents is distributed outwards from high to low, so that the reflection of the filler to light and the radiation to heat can be fully utilized, and the radiation refrigeration effect is improved.
Detailed Description
The invention relates to a method for improving radiation refrigeration performance of a radiation refrigeration coating, which comprises the following steps: (a) Preparing at least three radiation refrigeration functional coatings with different filler contents; (b) Sequentially coating the radiation refrigeration functional coating on the surface of glass, and drying to obtain a glass product coated with a plurality of layers of radiation refrigeration films; or respectively extruding to obtain casting materials to be sequentially laminated on the surface of the glass to obtain a glass product coated with the casting materials; the filler content in the multiple layers of radiation refrigeration films is reduced from inside to outside in sequence. The coating with the radiation refrigeration function and different filler contents is arranged outwards from high to low according to the content, so that the reflection of the filler to light and the radiation to heat can be fully utilized, and the radiation refrigeration effect is improved.
In the step (a), three types of the radiation refrigeration functional coating are adopted, and the mass fractions of the filler are preferably 3 to 5%, 6 to 10% and 12 to 15% respectively; the radiation refrigeration effect can be further improved on the basis of reducing the using amount of the filler. The three radiation refrigeration functional coatings are a first radiation refrigeration functional coating, a second radiation refrigeration functional coating and a third radiation refrigeration functional coating, and the first radiation refrigeration functional coating comprises the following raw material components in percentage by mass: 94 to 96.5 percent of acrylic resin; 3 to 5 percent of filler; 0.5 to 1 percent of ethylene-vinyl acetate copolymer emulsion; the second radiation refrigeration functional coating comprises the following raw material components in percentage by mass: 89-93.5% of acrylic resin; 6 to 10 percent of filler; 0.5 to 1 percent of ethylene-vinyl acetate copolymer emulsion; the third radiation refrigeration functional coating comprises the following raw material components in percentage by mass: 84 to 87.5 percent of acrylic resin; 12 to 15 percent of filler; 0.5 to 1 percent of ethylene-vinyl acetate copolymer emulsion; the filler is a mixture of silicon dioxide and rutile titanium dioxide according to the mass ratio of 1; the particle size of the titanium dioxide is 0.2 to 20 mu m. In the step (b), when a coating process is adopted, the radiation refrigeration functional coating is dispersed by water, and the mass ratio of the water to the radiation refrigeration functional coating is 0.5 to 1:1. in the step (b), the drying temperature is 30 to 50 ℃. The first radiation refrigeration functional coating, the second radiation refrigeration functional coating and the third radiation refrigeration functional coating respectively form a first radiation refrigeration functional coating, a second radiation refrigeration functional coating and a third radiation refrigeration functional coating, and the thicknesses of the first radiation refrigeration functional coating, the second radiation refrigeration functional coating and the third radiation refrigeration functional coating are 10-100 mu m independently. And each parameter is accurately controlled, so that the radiation refrigeration effect is further improved.
The present invention will be described in further detail with reference to specific examples.
Example 1
The embodiment of the invention relates to a method for improving the radiation refrigeration performance of a radiation refrigeration coating, which comprises the following steps:
(a) Preparing three radiation refrigeration functional coatings with different filler contents according to the following proportion, and then respectively mixing and stirring the coatings with 50g of water to form uniformly dispersed corresponding coating liquid;
the first radiation refrigeration functional coating comprises the following raw material components in mass:
94g of acrylic resin (Mitsubishi BR113, the same applies below);
5g of filler, wherein 2.5g of silicon dioxide (Rui innovative material, spherical shape, specification: 2 to 50 mu m, the same below) and 2.5g of rutile type titanium dioxide (Qiyue biology, micron-sized, the same below);
1g of ethylene-vinyl acetate copolymer emulsion (VAE-Wake EP645, the same applies hereinafter);
the second radiation refrigeration functional coating comprises the following raw material components in mass:
89g of acrylic resin;
10g of filler (mass ratio of silica to rutile type titanium dioxide 1, the same applies below);
1g of ethylene-vinyl acetate copolymer emulsion;
the third radiation refrigeration functional coating comprises the following raw material components in parts by mass:
84g of acrylic resin;
15g of filler;
1g of ethylene-vinyl acetate copolymer emulsion.
(b) Sequentially coating a radiation refrigeration functional coating (namely the coating liquid with the control thickness of 100 mu m during coating) on the surface of glass (firstly coating the coating liquid corresponding to a third radiation refrigeration functional coating, drying at 30 to 50 ℃ for 0.5 to 1h, then coating the coating liquid corresponding to a second radiation refrigeration functional coating, drying at 30 to 50 ℃ for 0.5 to 1h, finally coating the coating liquid corresponding to a first radiation refrigeration functional coating, drying at 30 to 50 ℃ for 2 to 4h), and drying to obtain the glass product covered with the three-layer radiation refrigeration film.
Example 2
This example provides a method for improving the radiation refrigeration performance of a radiation refrigeration coating, which is substantially the same as in example 1, except that:
the first radiation refrigeration functional coating comprises the following raw material components in parts by mass:
96.5g of acrylic resin (Mitsubishi BR113, the same applies below);
3g of filler, wherein 1.5g of silicon dioxide (Rui innovative material, spherical shape, specification: 2 to 50 mu m, the same below) and 1.5g of rutile type titanium dioxide (Qiyue biology, micron-sized, the same below);
0.5g of ethylene-vinyl acetate copolymer emulsion (VAE-Wake EP645, the same applies hereinafter);
the second radiation refrigeration functional coating comprises the following raw material components in mass:
93.5g of acrylic resin;
filler 6g (mass ratio of silica to rutile type titanium dioxide 1, the same applies below);
0.5g of ethylene-vinyl acetate copolymer emulsion;
the third radiation refrigeration functional coating comprises the following raw material components in parts by mass:
87.5g of acrylic resin;
12g of filler;
0.5g of ethylene-vinyl acetate copolymer emulsion.
Example 3
This example provides a method for improving the radiation refrigeration performance of a radiation refrigeration coating, which is substantially the same as in example 1, except that:
the first radiation refrigeration functional coating comprises the following raw material components in parts by mass:
95.0g of acrylic resin (Mitsubishi BR113, the same applies hereinafter);
4g of filler, wherein 2.0g of silicon dioxide (Rui innovative material, spherical, specification: 2 to 50 μm, the same below) and 2.0g of rutile type titanium dioxide (Qiyue biology, micron-sized, the same below);
1.0g of ethylene-vinyl acetate copolymer emulsion (VAE-Wake EP645, the same applies hereinafter);
the second radiation refrigeration functional coating comprises the following raw material components in parts by mass:
91.0g of acrylic resin;
8.0g of filler (mass ratio of silica to rutile type titanium dioxide 1, the same applies below);
1.0g of ethylene-vinyl acetate copolymer emulsion;
the third radiation refrigeration functional coating comprises the following raw material components in mass:
86.0g of acrylic resin;
13.0g of filler;
1.0g of ethylene-vinyl acetate copolymer emulsion.
Comparative example 1
This example provides a method for improving the radiation refrigeration performance of a radiation refrigeration coating, which is substantially the same as in example 1, except that: the first radiation refrigeration functional coating layer is absent.
Comparative example 2
This example provides a method for improving the radiation refrigeration performance of a radiation refrigeration coating, which is substantially the same as in example 1, except that: the second radiation refrigeration functional coating layer is absent.
Comparative example 3
This example provides a method for improving the radiation refrigeration performance of a radiation refrigeration coating, which is substantially the same as in example 1, except that: the third radiation refrigeration functional coating layer is lacked.
Comparative example 4
This example provides a method for improving the radiation refrigeration performance of a radiation refrigeration coating, which is substantially the same as in example 1, except that: the filler content in first radiation refrigeration functional coating layer, second radiation refrigeration functional coating layer and the third radiation refrigeration functional coating layer reduces from inside to outside in proper order.
Comparative example 5
This example provides a method for improving the radiation refrigeration performance of a radiation refrigeration coating, which is substantially the same as in example 1, except that: the first radiation refrigeration functional coating was directly used to form a coating layer having the same thickness as in example 1.
Comparative example 6
This example provides a method for improving the radiation refrigeration performance of a radiation refrigeration coating, which is substantially the same as in example 1, except that: the second radiation refrigeration functional coating is directly adopted to form a coating layer with the same thickness as that in the example 1.
Comparative example 7
This example provides a method for improving the radiation refrigeration performance of a radiation refrigeration coating, which is substantially the same as in example 1, except that: the third radiation refrigeration functional coating is directly adopted to form a coating layer with the same thickness as that in the example 1.
Comparative example 8
This example provides a method for improving the radiation refrigeration performance of a radiation refrigeration coating, which is substantially the same as in example 1, except that:
the first radiation refrigeration functional coating comprises the following raw material components in mass:
97g of an acrylic resin (Mitsubishi BR113, the same applies hereinafter);
2.0g of filler, wherein 1.0g of silicon dioxide (Rui innovative material, spherical shape, specification: 2 to 50 mu m, the same below) and 1.0g of rutile type titanium dioxide (Qiyue biology, micron-sized, the same below);
1g of ethylene-vinyl acetate copolymer emulsion (VAE-Wake EP645, the same applies hereinafter);
the second radiation refrigeration functional coating comprises the following raw material components in mass:
88g of acrylic resin;
filler 11g (mass ratio of silica to rutile type titanium dioxide 1, the same applies below);
1g of ethylene-vinyl acetate copolymer emulsion;
the third radiation refrigeration functional coating comprises the following raw material components in mass:
81g of acrylic resin;
18g of filler;
1g of ethylene-vinyl acetate copolymer emulsion.
The products of examples 1 to 3 and comparative examples 1 to 8 were subjected to a heat absorption test, a window emissivity test and a heat reflectance test:
thermal reflectance (300 nm-2500 nm) test: the reflectance and transmittance of the light-incident side of the refrigerated film were measured with a platinum elmer spectrophotometer lambda950 at an incident angle of 5 ℃, and the average reflectance and average transmittance of the entire spectrum (wavelength range 300nm-2500 nm) were calculated as the thermal reflectance and thermal transmittance of the refrigerated film, respectively, with thermal absorptance = 1-thermal emissivity-thermal transmittance. Wherein, the incidence angle refers to the angle of the light ray relative to a straight line vertical to the light incidence side surface of the refrigeration film;
window emissivity (8 μm-13 μm) test: the refrigeration film is placed into an infrared spectrometer of Bruker Invenior, the absorbance of the refrigeration film in the wave band with the wavelength range of 8-13 μm is measured, and the measurement interval is 1nm. The average value of the absorbances of the refrigeration films in the wavelength band of 8 μm to 13 μm was taken as the average absorbance of the refrigeration films. The window emissivity is equal to the average absorbance.
TABLE 1 product Performance test Table for examples 1 to 3 and comparative examples 1 to 8
As can be seen from Table 1, the products obtained when a certain radiation refrigeration functional coating layer is absent, a radiation refrigeration functional coating layer with a single content of filler is used, or a reasonable component ratio is exceeded (comparative examples) are not as good as those of the products of examples 1-3.
The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this means. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. A method for improving radiation refrigeration performance of a radiation refrigeration coating is characterized by comprising the following steps:
(a) Preparing at least three radiation refrigeration functional coatings with different filler contents;
(b) Sequentially coating the radiation refrigeration functional coating on the surface of glass, and drying to obtain a glass product coated with a plurality of layers of radiation refrigeration films; or respectively extruding to obtain casting materials to be sequentially laminated on the surface of the glass to obtain a glass product coated with the casting materials; the filler content in the multiple layers of radiation refrigeration films is reduced from inside to outside in sequence.
2. The method for improving the radiation refrigeration performance of the radiation refrigeration coating according to claim 1, wherein the method comprises the following steps: in the step (a), three types of radiation refrigeration functional coatings are provided, and the mass fractions of the fillers are respectively 3 to 5%, 6 to 10% and 12 to 15%.
3. The method for improving the radiation refrigeration performance of the radiation refrigeration coating layer according to claim 2, wherein in the step (a), the three radiation refrigeration functional coating materials are a first radiation refrigeration functional coating material, a second radiation refrigeration functional coating material and a third radiation refrigeration functional coating material,
the first radiation refrigeration functional coating comprises the following raw material components in percentage by mass:
94 to 96.5 percent of acrylic resin;
3 to 5 percent of filler;
0.5 to 1 percent of ethylene-vinyl acetate copolymer emulsion;
the second radiation refrigeration functional coating comprises the following raw material components in percentage by mass:
89-93.5% of acrylic resin;
6 to 10 percent of filler;
0.5 to 1 percent of ethylene-vinyl acetate copolymer emulsion;
the third radiation refrigeration functional coating comprises the following raw material components in percentage by mass:
84 to 87.5 percent of acrylic resin;
12 to 15 percent of filler;
0.5 to 1 percent of ethylene-vinyl acetate copolymer emulsion;
the filler is a mixture of silicon dioxide and rutile type titanium dioxide according to the mass ratio of 1; the particle size of the titanium dioxide is 0.2 to 20 mu m.
4. The method for improving the radiation refrigeration performance of the radiation refrigeration coating according to claim 2 or 3, wherein in the step (b), when a coating process is adopted, the radiation refrigeration functional coating is dispersed by water, and the mass ratio of the water to the radiation refrigeration functional coating is 0.5 to 1:1.
5. the method for improving the radiation refrigeration performance of the radiation refrigeration coating according to claim 1, wherein the method comprises the following steps: in the step (b), the drying temperature is 30 to 50 ℃.
6. The method for improving the radiation refrigeration performance of the radiation refrigeration coating according to claim 3, wherein the method comprises the following steps: the first radiation refrigeration functional coating, the second radiation refrigeration functional coating and the third radiation refrigeration functional coating respectively form a first radiation refrigeration functional coating, a second radiation refrigeration functional coating and a third radiation refrigeration functional coating, and the thicknesses of the first radiation refrigeration functional coating, the second radiation refrigeration functional coating and the third radiation refrigeration functional coating are independent of each other and are 10-100 mu m.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110317521A (en) * | 2019-07-05 | 2019-10-11 | 宁波瑞凌新能源科技有限公司 | Selective radiation refrigeration coating and its composite material and methods for using them |
| CN111446431A (en) * | 2020-04-14 | 2020-07-24 | 南京宁智高新材料研究院有限公司 | Method for enhancing interface contact of silicon-oxygen-carbon cathode material of lithium ion battery through oxygen transfer reaction |
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| CN110317521A (en) * | 2019-07-05 | 2019-10-11 | 宁波瑞凌新能源科技有限公司 | Selective radiation refrigeration coating and its composite material and methods for using them |
| 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 |
| CN111446431A (en) * | 2020-04-14 | 2020-07-24 | 南京宁智高新材料研究院有限公司 | Method for enhancing interface contact of silicon-oxygen-carbon cathode material of lithium ion battery through oxygen transfer reaction |
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Application publication date: 20230103 |