CN116042090B - Passive radiation refrigeration coating, preparation method thereof and passive radiation refrigeration coating - Google Patents
Passive radiation refrigeration coating, preparation method thereof and passive radiation refrigeration coating Download PDFInfo
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- CN116042090B CN116042090B CN202310110435.0A CN202310110435A CN116042090B CN 116042090 B CN116042090 B CN 116042090B CN 202310110435 A CN202310110435 A CN 202310110435A CN 116042090 B CN116042090 B CN 116042090B
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- radiation refrigeration
- passive radiation
- passive
- refrigeration coating
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- 239000011248 coating agent Substances 0.000 title claims abstract description 132
- 238000000576 coating method Methods 0.000 title claims abstract description 132
- 238000005057 refrigeration Methods 0.000 title claims abstract description 71
- 230000005855 radiation Effects 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002105 nanoparticle Substances 0.000 claims abstract description 19
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 15
- 239000003960 organic solvent Substances 0.000 claims abstract description 10
- 239000003973 paint Substances 0.000 claims abstract description 9
- 239000003002 pH adjusting agent Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 3
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 42
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 claims description 42
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 24
- DCQBZYNUSLHVJC-UHFFFAOYSA-N 3-triethoxysilylpropane-1-thiol Chemical compound CCO[Si](OCC)(OCC)CCCS DCQBZYNUSLHVJC-UHFFFAOYSA-N 0.000 claims description 21
- 244000028419 Styrax benzoin Species 0.000 claims description 21
- 235000000126 Styrax benzoin Nutrition 0.000 claims description 21
- 235000008411 Sumatra benzointree Nutrition 0.000 claims description 21
- 229960002130 benzoin Drugs 0.000 claims description 21
- 235000019382 gum benzoic Nutrition 0.000 claims description 21
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 13
- 229910002113 barium titanate Inorganic materials 0.000 claims description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- 229960000583 acetic acid Drugs 0.000 claims description 12
- 239000012362 glacial acetic acid Substances 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- OTKCEEWUXHVZQI-UHFFFAOYSA-N 1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(=O)CC1=CC=CC=C1 OTKCEEWUXHVZQI-UHFFFAOYSA-N 0.000 claims description 3
- ZXDDPOHVAMWLBH-UHFFFAOYSA-N 2,4-Dihydroxybenzophenone Chemical compound OC1=CC(O)=CC=C1C(=O)C1=CC=CC=C1 ZXDDPOHVAMWLBH-UHFFFAOYSA-N 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 3
- 239000012965 benzophenone Substances 0.000 claims description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 3
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 3
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims description 3
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 claims description 3
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims 1
- 239000000758 substrate Substances 0.000 abstract description 20
- 239000000463 material Substances 0.000 abstract description 15
- 238000002310 reflectometry Methods 0.000 abstract description 14
- 230000003075 superhydrophobic effect Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 description 54
- 239000007788 liquid Substances 0.000 description 52
- UUEWCQRISZBELL-UHFFFAOYSA-N 3-trimethoxysilylpropane-1-thiol Chemical compound CO[Si](OC)(OC)CCCS UUEWCQRISZBELL-UHFFFAOYSA-N 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 12
- 238000000985 reflectance spectrum Methods 0.000 description 12
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 11
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 10
- 238000000295 emission spectrum Methods 0.000 description 9
- 238000002329 infrared spectrum Methods 0.000 description 9
- 230000001678 irradiating effect Effects 0.000 description 9
- 238000002371 ultraviolet--visible spectrum Methods 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 238000001723 curing Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000011787 zinc oxide Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000002041 carbon nanotube Substances 0.000 description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- SYBYTAAJFKOIEJ-UHFFFAOYSA-N 3-Methylbutan-2-one Chemical compound CC(C)C(C)=O SYBYTAAJFKOIEJ-UHFFFAOYSA-N 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000004038 photonic crystal Substances 0.000 description 1
- 238000003847 radiation curing Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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
- 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
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the field of coating materials, and particularly relates to a passive radiation refrigeration coating, a preparation method thereof and a passive radiation refrigeration coating. The passive radiation refrigeration paint provided by the invention comprises the following components: octavinyl-POSS, silane coupling agent, pH adjuster, inorganic nanoparticles, and organic solvent. The experimental results show that: the coating formed by the passive radiation refrigeration coating provided by the invention has high-efficiency reflectivity in a wave band of 400-2500 nm and high-efficiency emissivity in an infrared atmospheric window area (wavelength of 8-13 mu m); meanwhile, the super-hydrophobic material has super-hydrophobic capability, and the contact angle with water is about 140 degrees; in addition, the adhesive also has good mechanical strength and is firmly combined with the substrate; the paint has good application prospect in tropical areas and humid areas. In addition, the passive radiation refrigeration coating provided by the invention has the advantages of simpler component composition, no need of complex structural design, easier production and preparation and lower production cost.
Description
Technical Field
The invention belongs to the field of coating materials, and particularly relates to a passive radiation refrigeration coating, a preparation method thereof and a passive radiation refrigeration coating.
Background
The passive radiation refrigeration achieves the effect of passive cooling by reflecting visible light and near infrared light wave bands (the wavelength is 400-2500 nm) and transmitting light waves (the wavelength is 8-13 mu m) which are not absorbed by the atmosphere to the universe. The technology does not need extra energy input, and has great significance in reducing energy consumption. However, passive radiative cooling of materials in the related art is easy to achieve at night, but it is difficult to achieve a cooling effect below ambient during daytime. And the passive radiation refrigeration material in the related art needs complex structural design, such as a photonic crystal and an aerosol structure, and the like, and the method has high cost and no expandability.
Disclosure of Invention
In view of the above, the invention aims to provide the passive radiation refrigeration coating, the preparation method thereof and the passive radiation refrigeration coating, and the coating formed by the passive radiation refrigeration coating has good refrigeration effect in daytime, has a superhydrophobic function and can be suitable for various humid environments; in addition, the coating has the advantages of simple components, easy preparation and low cost.
The invention provides a passive radiation refrigeration coating, which comprises the following components: octavinyl-POSS, silane coupling agent, pH adjuster, inorganic nanoparticles, and organic solvent.
Preferably, the silane coupling agent is one or more of vinyl triethoxysilane, vinyl trimethoxysilane, gamma-aminopropyl trimethoxysilane, 3-aminopropyl trimethoxysilane, gamma-mercaptopropyl triethoxysilane, phenyl trimethoxysilane, phenyl triethoxysilane and methyl triethoxysilane.
Preferably, the inorganic nano particles are one or more of barium titanate, silicon dioxide, zinc oxide, titanium dioxide and aluminum oxide; the particle size of the inorganic nano particles is 20-1500 nm.
Preferably, the mass ratio of the octavinyl-POSS, the silane coupling agent and the inorganic nano particles is 1: (0.01-1): (0.01-1).
Preferably, the pH regulator is one or more of hydrochloric acid, glacial acetic acid, sulfuric acid, ammonia water and sodium hydroxide.
Preferably, the pH value of the passive radiation refrigeration coating is 3-11.
Preferably, the components of the passive radiant refrigeration coating further comprise a catalyst and/or water.
Preferably, the catalyst is one or more of benzoin dimethyl ether, diphenyl ethanone, alpha-hydroxyalkyl benzophenone, 2, 4-dihydroxybenzophenone and dibutyl tin dilaurate;
the mass ratio of the catalyst to the octavinyl-POSS is (0-0.05): 1.
the invention provides a preparation method of the passive radiation refrigeration coating, which comprises the following steps:
and uniformly mixing all the components forming the passive radiation refrigeration coating to obtain the passive radiation refrigeration coating.
The invention provides a passive radiation refrigeration coating, which is formed by curing the coated passive radiation refrigeration coating.
Compared with the prior art, the invention provides the passive radiation refrigeration coating, the preparation method thereof and the passive radiation refrigeration coating. The passive radiation refrigeration paint provided by the invention comprises the following components: octavinyl-POSS, silane coupling agent, pH adjuster, inorganic nanoparticles, and organic solvent. The experimental results show that: the coating formed by the passive radiation refrigeration coating provided by the invention has high-efficiency reflectivity in a wave band of 400-2500 nm and high-efficiency emissivity in an infrared atmospheric window area (wavelength of 8-13 mu m); meanwhile, the super-hydrophobic material has super-hydrophobic capability, and the contact angle with water is about 140 degrees; in addition, the adhesive also has good mechanical strength and is firmly combined with the substrate; the paint has good application prospect in tropical areas and humid areas. In addition, the passive radiation refrigeration coating provided by the invention has the advantages of simpler component composition, no need of complex structural design, easier production and preparation and lower production cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a reflectance spectrum and an emission spectrum provided in example 1 of the present invention;
FIG. 2 is a graph showing the measurement results of the contact angle between the coating and water provided in example 1 of the present invention;
FIG. 3 is a digital photograph of a coating provided in example 1 of the present invention on a metallic aluminum substrate;
FIG. 4 is a reflectance spectrum and an emission spectrum provided in example 2 of the present invention;
FIG. 5 is a reflectance spectrum and an emission spectrum provided in example 3 of the present invention;
FIG. 6 is a reflectance spectrum and an emission spectrum provided in comparative example 1 of the present invention;
FIG. 7 is a digital photograph of a coating provided in comparative example 1 of the present invention on a metallic aluminum substrate;
fig. 8 is a reflectance spectrum and an emission spectrum provided in comparative example 2 of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a passive radiation refrigeration coating, which comprises the following components: octavinyl-POSS, silane coupling agent, pH adjuster, inorganic nanoparticles, and organic solvent.
In the coating provided by the invention, the octavinyl-POSS is also called vinyl silsesquioxane, and the CAS code is 69655-76-1.
In the coating provided by the invention, the silane coupling agent is preferably one or more of vinyl triethoxysilane, vinyl trimethoxysilane, gamma-aminopropyl trimethoxysilane, 3-aminopropyl trimethoxysilane, gamma-mercaptopropyl trimethoxysilane (KH-590), gamma-mercaptopropyl triethoxysilane, phenyl trimethoxysilane, phenyl triethoxysilane and methyl triethoxysilane. In the invention, alkoxy hydrolysis in the molecules of the silane coupling agents can react with inorganic nano particles to form strong chemical bonds, lipophilic groups in the coupling agents have the property of being organophilic, and can interact with long molecular chains in organic matters to generate chemical reactions or physical entanglement, so that the compatibility between the inorganic matters and the organic polymers is improved; therefore, when the silane coupling agent is interposed between the inorganic and organic interfaces, a bonding layer of the organic matrix-the silane coupling agent-the inorganic matrix can be formed, so that two substances with larger difference in properties of the organic matrix and the inorganic matrix are firmly bonded, and the interfacial adhesion between the inorganic substance and the substrate is improved.
In the coating provided by the invention, the inorganic nano particles are preferably one or more of barium titanate, silicon dioxide, zinc oxide, titanium dioxide and aluminum oxide; the particle size of the inorganic nanoparticles is preferably 20 to 1500nm, and may be specifically 20nm, 25nm, 30nm, 50nm, 70nm, 100nm, 150nm, 200nm, 300nm, 400nm, 500nm, 600nm, 700nm, 800nm, 900nm, 1000nm, 1100nm, 1200nm, 1300nm, 1400nm or 1500nm.
In the coating provided by the invention, the mass ratio of the octavinyl-POSS, the silane coupling agent and the inorganic nano particles is preferably 1: (0.01-1): (0.01-1); wherein the mass ratio of the octavinyl-POSS to the silane coupling agent may specifically be 1:0.01, 1:0.02, 1:0.03, 1:0.034, 1:0.04, 1:0.05, 1:0.07, 1:0.1, 1:0.15, 1:0.2, 1:0.25, 1:0.3, 1:0.4, 1:0.5, 1:0.6, 1:0.7, 1:0.8, 1:0.9 or 1:1; the mass ratio of octavinyl-POSS to inorganic nanoparticles may specifically be 1:0.01, 1:0.02, 1:0.03, 1:0.033, 1:0.04, 1:0.05, 1:0.07, 1:0.1, 1:0.15, 1:0.2, 1:0.25, 1:0.3, 1:0.4, 1:0.5, 1:0.6, 1:0.7, 1:0.8, 1:0.9, or 1:1.
In the coating provided by the invention, the pH regulator is preferably one or more of hydrochloric acid, glacial acetic acid, sulfuric acid, ammonia water and sodium hydroxide; the amount of the pH adjustor is determined according to the final desired pH of the coating. In the present invention, the pH of the passive radiation refrigeration paint is preferably 3 to 11, and specifically may be 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5 or 11. In the embodiment provided by the invention, the mass ratio of the pH regulator to the octavinyl-POSS can be (0.5-2): 0.5, more specifically 1:0.5.
In the coating provided by the invention, the components of the passive radiation refrigeration coating also comprise a catalyst and/or water; the catalyst is preferably one or more of benzoin dimethyl ether, diphenyl ethanone, alpha-hydroxyalkyl benzophenone, 2, 4-dihydroxybenzophenone and dibutyl tin dilaurate; the mass ratio of the catalyst to the octavinyl-POSS is preferably (0-0.05): 1, which may specifically be 0.005:1, 0.01:1, 0.015:1, 0.02:1, 0.025:1, 0.03:1, 0.035:1, 0.04:1, 0.045:1 or 0.05:1; the water is mainly used for fine adjustment of the pH value of the coating system, the specific dosage of the water is not particularly limited, and the water is determined according to the final required pH value of the coating.
In the coating provided by the invention, the organic solvent comprises one or more of methanol, ethanol, benzene, toluene, diethyl ether, propylene oxide, acetone, methyl butanone, pentane, hexane, octane, dichloromethane, chloroform and tetrahydrofuran; the mass ratio of the organic solvent to the octavinyl-POSS is preferably (1-30): 1, which may be specifically 1:1, 5:1, 10:1, 15:1, 20:1, 25:1 or 30:1.
The invention also provides a preparation method of the passive radiation refrigeration coating, which comprises the following steps:
and uniformly mixing all the components forming the passive radiation refrigeration coating to obtain the passive radiation refrigeration coating.
In the preparation method provided by the invention, the passive radiation refrigeration coating can be obtained by uniformly mixing all the components composing the passive radiation refrigeration coating; the specific mixing process preferably comprises: the octavinyl-POSS, the inorganic nano particles and the organic solvent are mixed firstly, then the octavinyl-POSS, the inorganic nano particles and the organic solvent are mixed with the pH regulator and water, and finally the octavinyl-POSS, the inorganic nano particles and the organic solvent are mixed with the silane coupling agent and the catalyst.
The invention also provides a passive radiation refrigeration coating which is formed by curing the passive radiation refrigeration coating after being coated. Wherein, the curing mode is preferably ultraviolet irradiation curing; the ultraviolet wavelength of the ultraviolet radiation curing is preferably 315-400 nm, more preferably 360nm; the ultraviolet irradiation curing time is preferably 2-10 min, more preferably 5min; the thickness of the coating is preferably 0.01 to 1mm, more preferably 0.05 to 0.5mm, most preferably 0.1 to 0.2mm.
For clarity, the following examples are provided in detail.
Example 1
In this example, the mass ratio of octavinyl-POSS, barium titanate and KH-590 is 1:1:0.1, and the specific preparation process of the coating material is as follows:
firstly, adding 0.5g of octavinyl-POSS and barium titanate (100 nm) into 5g of tetrahydrofuran solvent, and well dispersing to obtain a dispersion liquid A;
secondly, adding 1g of glacial acetic acid into the dispersion liquid A, and adding a proper amount of water to adjust the pH value to 3-4 to obtain a dispersion liquid B;
thirdly, adding 0.05g of gamma-mercaptopropyl trimethoxysilane (KH-590) and 0.01g of benzoin dimethyl ether into the dispersion liquid B, and uniformly dispersing the gamma-mercaptopropyl trimethoxysilane and the benzoin dimethyl ether to obtain a dispersion liquid C (pH=3-4), namely the passive radiation refrigeration coating;
and fourthly, coating the dispersion liquid C on a metal aluminum substrate, and irradiating for 5min by ultraviolet rays (with the wavelength of 360 nm) to obtain the passive radiation refrigeration coating with the thickness of 0.1 mm.
The reflectance and emissivity of the coating were characterized by infrared spectrum and uv-vis spectrum, and the results are shown in fig. 1, and fig. 1 is a reflectance spectrum and an emission spectrum provided in example 1 of the present invention, where (a) is a reflectance spectrum, (b) is an emission spectrum, and the following is the same. As can be seen from FIG. 1, the reflectivity of the coating is as high as 94% in the 400-2500 nm band, and the emissivity in the infrared atmospheric window region is as high as 97%.
The contact angle of the coating with water was measured by using a surface tension/dynamic contact angle measuring instrument, and the result is shown in fig. 2, and fig. 2 is a graph showing the measurement result of the contact angle of the coating with water provided in example 1 of the present invention. As can be seen from fig. 2, the contact angle of the coating with water is 140 °.
The coating of example 1 was observed and the results are shown in fig. 3, fig. 3 being a digital photograph of the coating provided in example 1 of the present invention on a metallic aluminum substrate. As can be seen from fig. 3, the coating is tightly bonded to the substrate, indicating that the interfacial bonding force between the coating and the substrate is strong.
Example 2
In this example, the mass ratio of octavinyl-POSS, barium titanate, and KH-590 is 1:1:0.034, and the specific preparation process of the coating material is as follows:
firstly, adding 0.5g of octavinyl-POSS and barium titanate (100 nm) into 5g of tetrahydrofuran solvent, and well dispersing to obtain a dispersion liquid A;
secondly, adding 1g of glacial acetic acid into the dispersion liquid A, and adding a proper amount of water to adjust the pH value to 3-4 to obtain a dispersion liquid B;
thirdly, adding 0.017g of gamma-mercaptopropyl trimethoxysilane (KH-590) and 0.01g of benzoin dimethyl ether into the dispersion liquid B, and uniformly dispersing the gamma-mercaptopropyl trimethoxysilane and the benzoin dimethyl ether to obtain a dispersion liquid C (pH=3-4), namely the passive radiation refrigeration coating;
and fourthly, coating the dispersion liquid C on an epoxy resin/carbon nano tube composite substrate, and irradiating for 5min by ultraviolet rays (with the wavelength of 360 nm) to obtain the passive radiation refrigeration coating with the thickness of 0.1 mm.
The reflectance and emissivity of the coating were characterized by infrared and uv-vis spectra, and the results are shown in fig. 4, and fig. 4 is a reflectance spectrum and an emissivity spectrum provided in example 2 of the present invention. As can be seen from FIG. 4, the reflectivity of the coating is as high as 87% in the 400-2500 nm band and the emissivity is as high as 94% in the infrared atmospheric window region.
Example 3
In this example, the mass ratio of octavinyl-POSS, barium titanate and KH-590 is 1:1:0.05, and the specific preparation process of the coating material is as follows:
firstly, adding 0.5g of octavinyl-POSS and barium titanate (100 nm) into 5g of tetrahydrofuran solvent, and well dispersing to obtain a dispersion liquid A;
secondly, adding 1g of glacial acetic acid into the dispersion liquid A, and adding a proper amount of water to adjust the pH value to 3-4 to obtain a dispersion liquid B;
thirdly, adding 0.025g of gamma-mercaptopropyl trimethoxy silane (KH-590) and 0.01g of benzoin dimethyl ether into the dispersion liquid B, and uniformly dispersing the gamma-mercaptopropyl trimethoxy silane and the benzoin dimethyl ether to obtain a dispersion liquid C (pH=3-4), namely the passive radiation refrigeration coating;
and fourthly, coating the dispersion liquid C on an epoxy resin/carbon nano tube composite substrate, and irradiating for 5min by ultraviolet rays (with the wavelength of 360 nm) to obtain the passive radiation refrigeration coating with the thickness of 0.1 mm.
The reflectance and emissivity of the coating were characterized by infrared and uv-vis spectra, and the results are shown in fig. 5, and fig. 5 is a reflectance spectrum and an emissivity spectrum provided in example 3 of the present invention. As can be seen from FIG. 5, the reflectivity of the coating is as high as 83% in the 400-2500 nm band, and the emissivity in the infrared atmospheric window region is as high as 94%.
Example 4
In this example, the mass ratio of octavinyl-POSS, titanium dioxide to KH-590 is 1:1:0.05, and the specific preparation process of the coating material is as follows:
in the first step, 0.5g of octavinyl-POSS and titanium dioxide (25 nm) are added into 5g of tetrahydrofuran solvent, and the octavinyl-POSS and titanium dioxide are well dispersed to obtain a dispersion liquid A;
secondly, adding 1g of glacial acetic acid into the dispersion liquid A, and adding a proper amount of water to adjust the pH value to 3-4 to obtain a dispersion liquid B;
thirdly, adding 0.025g of gamma-mercaptopropyl trimethoxy silane (KH-590) and 0.01g of benzoin dimethyl ether into the dispersion liquid B, and uniformly dispersing the gamma-mercaptopropyl trimethoxy silane and the benzoin dimethyl ether to obtain a dispersion liquid C (pH=3-4), namely the passive radiation refrigeration coating;
and fourthly, coating the dispersion liquid C on a metal copper substrate, and irradiating for 5min by ultraviolet rays (with the wavelength of 360 nm) to obtain the passive radiation refrigeration coating with the thickness of 0.1 mm.
The reflectivity and emissivity of the coating are characterized by utilizing infrared spectrum and ultraviolet-visible spectrum, and the result shows that: the reflectivity of the coating is up to 90% in the wave band of 400-2500 nm, and the emissivity in the infrared atmospheric window area is up to 95%.
Example 5
In this example, the mass ratio of octavinyl-POSS, silica to KH-590 is 1:1:0.1, and the specific preparation process of the coating material is as follows:
in the first step, 0.5g each of octavinyl-POSS and silica (500 nm) was added to 5g of tetrahydrofuran solvent and well dispersed to obtain a dispersion A;
secondly, adding 1g of glacial acetic acid into the dispersion liquid A, and adding a proper amount of water to adjust the pH value to 3-4 to obtain a dispersion liquid B;
thirdly, adding 0.05g of gamma-mercaptopropyl trimethoxysilane (KH-590) and 0.01g of benzoin dimethyl ether into the dispersion liquid B, and uniformly dispersing the gamma-mercaptopropyl trimethoxysilane and the benzoin dimethyl ether to obtain a dispersion liquid C (pH=3-4), namely the passive radiation refrigeration coating;
and fourthly, coating the dispersion liquid C on a metal copper substrate, and irradiating for 5min by ultraviolet rays (with the wavelength of 360 nm) to obtain the passive radiation refrigeration coating with the thickness of 0.1 mm.
The reflectivity and emissivity of the coating are characterized by utilizing infrared spectrum and ultraviolet-visible spectrum, and the result shows that: the reflectivity of the coating is up to 85% in the wave band of 400-2500 nm, and the emissivity in the infrared atmospheric window area is up to 93%.
Example 6
In this example, the mass ratio of octavinyl-POSS, alumina to KH-590 is 1:0.5:0.1, and the specific preparation process of the coating material is as follows:
in the first step, 0.5g of octavinyl-POSS and 0.25g of alumina (150 nm) were added to 5g of tetrahydrofuran solvent and well dispersed to obtain a dispersion A;
secondly, adding 1g of glacial acetic acid into the dispersion liquid A, and adding a proper amount of water to adjust the pH value to 3-4 to obtain a dispersion liquid B;
thirdly, adding 0.05g of gamma-mercaptopropyl trimethoxysilane (KH-590) and 0.01g of benzoin dimethyl ether into the dispersion liquid B, and uniformly dispersing the gamma-mercaptopropyl trimethoxysilane and the benzoin dimethyl ether to obtain a dispersion liquid C (pH=3-4), namely the passive radiation refrigeration coating;
and fourthly, coating the dispersion liquid C on an epoxy resin/carbon nano tube composite substrate, and irradiating for 5min by ultraviolet rays (with the wavelength of 360 nm) to obtain the passive radiation refrigeration coating with the thickness of 0.1 mm.
The reflectivity and emissivity of the coating are characterized by utilizing infrared spectrum and ultraviolet-visible spectrum, and the result shows that: the reflectivity of the coating is up to 86% in the wave band of 400-2500 nm, and the emissivity in the infrared atmospheric window area is up to 93%.
Example 7
In this example, the mass ratio of octavinyl-POSS, zinc oxide to KH-590 is 1:1:0.1, and the specific preparation process of the coating material is as follows:
in the first step, 0.5g of octavinyl-POSS and zinc oxide (100 nm) are added into 5g of tetrahydrofuran solvent respectively, and the octavinyl-POSS and zinc oxide are well dispersed to obtain a dispersion liquid A;
secondly, adding 1g of glacial acetic acid into the dispersion liquid A, and adding a proper amount of water to adjust the pH value to 3-4 to obtain a dispersion liquid B;
thirdly, adding 0.05g of gamma-mercaptopropyl trimethoxysilane (KH-590) and 0.01g of benzoin dimethyl ether into the dispersion liquid B, and uniformly dispersing the gamma-mercaptopropyl trimethoxysilane and the benzoin dimethyl ether to obtain a dispersion liquid C (pH=3-4), namely the passive radiation refrigeration coating;
and fourthly, coating the dispersion liquid C on an epoxy resin/carbon nano tube composite substrate, and irradiating for 5min by ultraviolet rays (with the wavelength of 360 nm) to obtain the passive radiation refrigeration coating with the thickness of 0.1 mm.
The reflectivity and emissivity of the coating are characterized by utilizing infrared spectrum and ultraviolet-visible spectrum, and the result shows that: the reflectivity of the coating is up to 90% in the wave band of 400-2500 nm, and the emissivity in the infrared atmospheric window area is up to 95%.
Comparative example 1
In this example, the mass ratio of octavinyl-POSS, barium titanate and KH-590 is 1:1:0, and the specific preparation process of the coating material is as follows:
firstly, adding 0.5g of octavinyl-POSS and barium titanate into 5g of tetrahydrofuran solvent, and well dispersing to obtain a dispersion liquid A;
secondly, adding 1g of glacial acetic acid into the dispersion liquid A, and adding a proper amount of water to adjust the pH value to 3-4 to obtain a dispersion liquid B;
thirdly, adding 0.01g of benzoin dimethyl ether into the dispersion liquid B, and uniformly dispersing the benzoin dimethyl ether to obtain a dispersion liquid C (pH=3-4), namely the passive radiation refrigeration coating;
and fourthly, coating the dispersion liquid C on a metal aluminum substrate, and irradiating for 5min by ultraviolet rays (with the wavelength of 360 nm) to obtain the passive radiation refrigeration coating with the thickness of 0.1 mm.
The reflectance and emissivity of the coating were characterized by infrared and uv-vis spectra, and the results are shown in fig. 6, and fig. 6 is a reflectance spectrum and an emission spectrum provided in comparative example 1 of the present invention. As can be seen from FIG. 6, the reflectivity of the coating is up to 95% in the 400-2500 nm band and the emissivity is up to 97% in the infrared atmospheric window region.
The coating of comparative example 1 was observed and the results are shown in fig. 7. Fig. 7 is a digital photograph of the coating provided in comparative example 1 of the present invention on a metallic aluminum substrate. As can be seen from the comparison between fig. 7 and fig. 3, the coating of the comparative example could not be tightly bonded to the substrate, and the coating of the comparative example could be peeled off with a small force, and the interfacial bonding force with the substrate was extremely weak, so that the coating could not be used as an effective coating.
Comparative example 2
In this example, the mass ratio of octavinyl-POSS, barium titanate and KH-590 is 1:0:0.1, and the specific preparation process of the coating material is as follows:
firstly, adding 0.5g of octavinyl-POSS into 5g of tetrahydrofuran solvent, and well dispersing to obtain a dispersion liquid A;
secondly, adding 1g of glacial acetic acid into the dispersion liquid A, and adding a proper amount of water to adjust the pH value to 3-4 to obtain a dispersion liquid B;
thirdly, adding 0.05g of gamma-mercaptopropyl trimethoxysilane (KH-590) and 0.01g of benzoin dimethyl ether into the dispersion liquid B, and uniformly dispersing the gamma-mercaptopropyl trimethoxysilane and the benzoin dimethyl ether to obtain a dispersion liquid C (pH=3-4), namely the passive radiation refrigeration coating;
and fourthly, coating the dispersion liquid C on a metal aluminum substrate, and irradiating for 5min by ultraviolet rays (with the wavelength of 360 nm) to obtain the passive radiation refrigeration coating with the thickness of 0.1 mm.
The reflectance and emissivity of the coating were characterized using infrared and uv-vis spectra, and the results are shown in fig. 8, and fig. 8 is a reflectance spectrum and an emissivity spectrum provided in comparative example 2 of the present invention. As can be seen from FIG. 8, the emissivity of the coating is 90% in the 400-2500 nm band and 97% in the infrared atmospheric window region. Comparing the reflectance spectrum and the emission spectrum of comparative example 2 with those of example 1, it is known that the addition of barium titanate can improve the reflectance of the coating in the 400-2500 nm band.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. The passive radiation refrigeration paint is characterized by comprising the following components: octavinyl-POSS, silane coupling agent, pH adjuster, inorganic nanoparticles, catalyst and organic solvent; the inorganic nano particles are barium titanate and/or titanium dioxide; the catalyst is one or more of benzoin dimethyl ether, diphenyl ethanone, alpha-hydroxyalkyl benzophenone, 2, 4-dihydroxybenzophenone and dibutyl tin dilaurate; the mass ratio of the octavinyl-POSS, the silane coupling agent, the inorganic nano particles and the catalyst is 1: (0.01-1): (0.01-1): (0.005-0.05).
2. The passive radiant refrigeration coating as set forth in claim 1 wherein said silane coupling agent is one or more of vinyltriethoxysilane, vinyltrimethoxysilane, gamma-aminopropyl trimethoxysilane, 3-aminopropyl trimethoxysilane, gamma-mercaptopropyl triethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, and methyltriethoxysilane.
3. The passive radiation refrigeration coating according to claim 1, wherein the particle size of the inorganic nanoparticles is 20-1500 nm.
4. The passive radiant refrigeration coating as set forth in claim 1 wherein said pH modifier is one or more of hydrochloric acid, glacial acetic acid, sulfuric acid, aqueous ammonia, and sodium hydroxide.
5. The passive radiation refrigeration paint according to claim 1, wherein the pH value of the passive radiation refrigeration paint is 3-11.
6. The passive radiant refrigeration coating as set forth in claim 1 wherein the composition of said passive radiant refrigeration coating further comprises water.
7. A method for preparing the passive radiation refrigeration paint as claimed in any one of claims 1 to 6, which is characterized by comprising the following steps:
and uniformly mixing all the components forming the passive radiation refrigeration coating to obtain the passive radiation refrigeration coating.
8. A passive radiation refrigeration coating, characterized in that it is formed by curing after coating the passive radiation refrigeration coating according to any one of claims 1 to 6.
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