CN117070091B - Infrared ultralow-emissivity coating compatible with optical camouflage and preparation method thereof - Google Patents
Infrared ultralow-emissivity coating compatible with optical camouflage and preparation method thereof Download PDFInfo
- Publication number
- CN117070091B CN117070091B CN202310767894.6A CN202310767894A CN117070091B CN 117070091 B CN117070091 B CN 117070091B CN 202310767894 A CN202310767894 A CN 202310767894A CN 117070091 B CN117070091 B CN 117070091B
- Authority
- CN
- China
- Prior art keywords
- infrared
- silver powder
- pigment
- camouflage
- coating
- 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.)
- Active
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 89
- 239000011248 coating agent Substances 0.000 title claims abstract description 87
- 230000003287 optical effect Effects 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 36
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000000049 pigment Substances 0.000 claims abstract description 50
- 239000002131 composite material Substances 0.000 claims abstract description 45
- 239000011347 resin Substances 0.000 claims abstract description 31
- 229920005989 resin Polymers 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000001035 drying Methods 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 238000004381 surface treatment Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 22
- 239000002904 solvent Substances 0.000 claims description 20
- 239000012752 auxiliary agent Substances 0.000 claims description 19
- 238000005303 weighing Methods 0.000 claims description 18
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 16
- -1 perylene compound Chemical class 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- 239000002562 thickening agent Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 10
- 229920000178 Acrylic resin Polymers 0.000 claims description 9
- 239000004925 Acrylic resin Substances 0.000 claims description 9
- 239000002318 adhesion promoter Substances 0.000 claims description 9
- 239000002270 dispersing agent Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000004094 surface-active agent Substances 0.000 claims description 9
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 8
- 239000003086 colorant Substances 0.000 claims description 8
- 229910017604 nitric acid Inorganic materials 0.000 claims description 8
- ZZSIDSMUTXFKNS-UHFFFAOYSA-N perylene red Chemical compound CC(C)C1=CC=CC(C(C)C)=C1N(C(=O)C=1C2=C3C4=C(OC=5C=CC=CC=5)C=1)C(=O)C2=CC(OC=1C=CC=CC=1)=C3C(C(OC=1C=CC=CC=1)=CC1=C2C(C(N(C=3C(=CC=CC=3C(C)C)C(C)C)C1=O)=O)=C1)=C2C4=C1OC1=CC=CC=C1 ZZSIDSMUTXFKNS-UHFFFAOYSA-N 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 claims description 6
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 6
- 239000005028 tinplate Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 238000003760 magnetic stirring Methods 0.000 claims description 5
- 229920005749 polyurethane resin Polymers 0.000 claims description 5
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims description 5
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 4
- 229920002943 EPDM rubber Polymers 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 4
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 229940083575 sodium dodecyl sulfate Drugs 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 claims 1
- 229920000056 polyoxyethylene ether Polymers 0.000 claims 1
- 238000002310 reflectometry Methods 0.000 abstract description 6
- 239000000945 filler Substances 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000006837 decompression Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 2
- 239000010408 film Substances 0.000 description 15
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- 230000003595 spectral effect Effects 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- FVDOBFPYBSDRKH-UHFFFAOYSA-N perylene-3,4,9,10-tetracarboxylic acid Chemical compound C=12C3=CC=C(C(O)=O)C2=C(C(O)=O)C=CC=1C1=CC=C(C(O)=O)C2=C1C3=CC=C2C(=O)O FVDOBFPYBSDRKH-UHFFFAOYSA-N 0.000 description 4
- 239000002518 antifoaming agent Substances 0.000 description 3
- 239000013530 defoamer Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 3
- 125000004217 4-methoxybenzyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1OC([H])([H])[H])C([H])([H])* 0.000 description 2
- 102100028292 Aladin Human genes 0.000 description 2
- 101710065039 Aladin Proteins 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/30—Camouflage paints
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- 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
- C08K2201/001—Conductive additives
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses an infrared ultra-low emissivity coating compatible with optical camouflage and a preparation method thereof; the preparation method comprises the steps of adding the flaky silver powder subjected to surface treatment and the pigment with infrared transmission performance into infrared transmission resin, enabling the resin and the pigment to be fully coated on the surface of the silver powder, and obtaining the flaky silver powder/pigment composite material through the processes of decompression, filtration, drying and the like; and adding color paste according to a color matching principle to blend the obtained flake silver powder/infrared transparent pigment into camouflage color meeting the standard to obtain the infrared ultralow-emissivity coating compatible with optical camouflage. The composite material has the advantages of low glossiness, low reflectivity, low emissivity, stable chemical property and the like, can be used as a low emissivity filler to be applied to compatible optical-infrared stealth coating, can effectively reduce the use amount of pigment/dye, and can obtain an infrared stealth camouflage coating with ultralow emissivity, and the preparation process is simple, environment-friendly and suitable for mass production.
Description
Technical Field
The invention relates to the technical field of functional materials, in particular to an infrared ultra-low emissivity coating compatible with optical camouflage and a preparation method thereof.
Background
With the continuous development of military reconnaissance technology, military camouflage is increasingly paid by countries around the world. The stealth technology reduces the discovery probability of the detected equipment by controlling the characteristics of equipment, personnel, such as sound, light, heat and the like. Among various stealth technologies, the visible light-infrared stealth technology is one of the key points of research in the stealth field, and the mechanism is that the emissivity and the spectral reflection characteristics of the surface of a target are regulated by adopting a low-emissivity material/coating, so that the infrared radiation characteristics and the color characteristics of the target are changed, the contrast between the target and the background is reduced, and the purpose of stealth of the visible light and the infrared is achieved.
Silver powder is used as a functional high-conductivity filler, has extremely low emissivity, can form a continuous conductive network in a film forming substance, and has extremely excellent conductivity and infrared shielding performance. As metal powder, the metal powder has obvious metallic luster, so that the spectral reflectivity is higher and reaches more than 60% in the visible light wave band; if the coating is applied to visible light-infrared stealth coating, a large amount of optical pigment/dye is needed to be added for regulating and controlling the color and spectral reflectivity of the coating, so that the conductivity of the coating is greatly reduced, and the emissivity of the coating is further influenced; thus, the use of silver powder in infrared stealth coatings is largely limited.
Therefore, how to provide silver powder applicable to visible light-infrared stealth paint, and ensure the conductivity and the emissivity of the coating becomes a technical problem to be solved in the present stage.
Disclosure of Invention
Based on the technical problems to be solved by the invention, the infrared ultra-low emissivity coating compatible with optical camouflage and the preparation method thereof provided by the invention are characterized in that resin and pigment are fully coated on the surface of silver powder, and the silver powder/pigment composite material in the form of flake is obtained through the processes of decompression, filtration, drying and the like, so that the silver powder/pigment composite material has the advantages of low glossiness, low reflectivity, low emissivity, stable chemical property and the like, and the silver powder/pigment composite material is used as a low emissivity filler in the compatible optical-infrared camouflage coating, so that the pigment/dye usage amount can be effectively reduced, the infrared camouflage coating with ultra-low emissivity is obtained, and the preparation process is simple, environment-friendly and suitable for mass production.
It is an object of the present invention to provide an infrared ultra-low emissivity coating that is compatible with optical camouflage.
Further, the coating comprises a silver powder-infrared transparent pigment composite material consisting of silver powder and infrared transparent pigment;
further, the silver powder-infrared transparent pigment composite material is silver coated infrared transparent pigment;
further, the silver powder-infrared transparent pigment composite is applied to an infrared ultra-low emissivity coating compatible with optical camouflage.
Further, the silver powder is flake silver powder; the particle size of the flake silver powder is 5-12 mu m; preferably, the particle size of the flake silver powder is 6-8 mu m;
further, the infrared transparent pigment is a dye with good infrared transparent performance and is a perylene compound pigment, including but not limited to perylene-red (3, 4,9, 10-perylene tetracarboxylic anhydride), perylene-black (N, N-di (4-methoxybenzyl) perylene-3, 4,9, 10-dicarboximide), perylene-yellow (1, 6, 10-tribromo-N- (cyclohexyl) perylene-3, 4-dicarboximide).
The second purpose of the invention is to provide a preparation method of an infrared ultra-low emissivity coating compatible with optical camouflage.
Comprising the following steps:
(1) A preparation method of a low-brightness and low-emissivity composite pigment comprises the following steps:
s1: surface treatment of flake silver powder
Accurately weighing 200-400 g of flake silver powder, sequentially adding 100-500 ml of solvent, 20-50 ml of dilute acid solution and 0.5-1.0 g of surfactant, heating and stirring for 2-4 h at the constant temperature of 40-60 ℃ to remove impurities and deoxidize the surface of the silver powder, centrifuging by a centrifuge, washing the obtained treated silver powder with deionized water and absolute ethyl alcohol respectively, and drying for later use;
s2: preparation of flake silver powder @ pigment composite
Weighing 50-100 g of processed flaky silver powder and 5-10 g of infrared transparent pigment, adding the infrared transparent resin with the mass fraction of 5-10% into a solvent, transferring the mixture into a constant-temperature water bath kettle with the temperature of 60-80 ℃ for magnetic stirring reaction for 2-6 hours, fully coating the resin and the pigment on the surface of the silver powder, filtering under reduced pressure, and drying for 2-4 hours to obtain the flaky silver powder@pigment composite material;
(2) The preparation method of the infrared ultra-low emissivity coating compatible with optical camouflage comprises the following steps:
s1: according to the mass ratio (25-40): (15-20): (10-20): (2-5): (1-3): (25-30) weighing a film forming substance, silver powder@pigment composite material, color paste of various colors, a thickening agent, other auxiliary agents and a solvent, and standing alone for later use;
s2: sequentially adding a film forming substance, a solvent, a silver powder@pigment composite material, a thickener and other auxiliary agents into a container for high-speed dispersion, adding various color pastes according to a color matching principle, blending to a camouflage color conforming to the national army standard, and carrying out high-speed grinding and dispersion for 2h under the condition of 800-1500 rpm; the viscosity is regulated to 20 to 25 seconds, the coating is sprayed on a tinplate and baked for 10 minutes at the temperature of 100 ℃ to obtain the infrared ultra-low emissivity coating compatible with optical camouflage.
Further, the particle size of the flake silver powder is 5-10 μm.
Further, the solvents include, but are not limited to, absolute ethanol, acetone, toluene, butyl acetate.
Further, the dilute acid solution includes, but is not limited to, dilute nitric acid solution, dilute hydrochloric acid solution; the mass fraction of the dilute acid solution is 0.5-5%.
Further, the surfactants include, but are not limited to, alkyl alcohol amides, alkylphenol ethoxylates ((TX-10), sodium dodecylbenzene sulfonate, sodium dodecylsulfate.
Further, the infrared transparent resin includes, but is not limited to, ethylene propylene diene monomer resin, SEBS resin, fluorocarbon resin.
Further, the film forming materials include, but are not limited to, acrylic resins, polyurethane resins, epoxy resins.
Further, the color paste of each color comprises but is not limited to cobalt blue color paste, 1102 scarlet color paste, 112 yellow color paste and carbon black color paste.
Further, such other adjuvants include, but are not limited to, dispersants, defoamers, adhesion promoters, and film forming adjuvants.
Compared with the prior art, the invention provides the infrared ultra-low emissivity coating compatible with optical camouflage and the preparation method thereof, and the coating has the following beneficial effects:
1. the method for coating the infrared transparent pigment with silver provided by the invention has the advantages that the preparation method is simple and environment-friendly, the influence on the dispersion performance, conductivity and emissivity of silver powder is extremely small, and the glossiness and spectral reflectivity of the surface of the silver powder can be effectively reduced; the coating can be applied to the infrared stealth coating, so that the use amount of optical pigment/dye can be effectively reduced, and an infrared ultra-low emissivity coating compatible with optical camouflage can be obtained.
2. Compared with pure silver powder filler, the silver powder/infrared transparent pigment composite material after coating treatment has obvious improvement in light resistance, weather resistance, heat resistance, oxidation resistance, heat stability and corrosion resistance.
Drawings
FIG. 1 shows a scanning electron microscope image and a photograph of a composite material in an embodiment of the invention;
FIG. 2 shows a graph of spectral reflectance of a composite material in an embodiment of the invention;
FIG. 3 shows an infrared camouflage effect of an infrared ultra low emissivity black coating compatible with optical camouflage in an embodiment of the invention.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In the examples which follow, the technical means employed are conventional means well known to those skilled in the art, and the reagents and materials of the invention are commercially available or otherwise publicly available, unless otherwise indicated.
The experimental raw materials and equipment involved in the invention mainly comprise, but are not limited to:
reagent: flake silver powder (AR, 99.5%), anhydrous ethanol (national reagent, AR, 99.5%), nitric acid (national reagent, AR, 65%), toluene (national reagent, AR, 99.5%), sodium dodecylbenzenesulfonate (aladin, AR, 99.5%), acrylic resin (desiccani acrylic resin, LP 65/12), polyurethane resin (kechu, desmophen-1700), ethylene propylene diene resin (japan trigonal, PX-049 PEM), SEBS resin (usa, W100), perylene-red (aladin, AR, 99%), perylene-black (BASF, AR, 95%), perylene-yellow (BASF, AR, 98%);
instrument: three-neck flask (Shu cattle, 500 ml), constant temperature magnetic stirring oil bath (Shanghai Libang West instruments and technologies Co., ltd., DF-101S), vacuum drying oven (Shanghai Libang West instruments and technologies Co., ltd., DZF), high-speed centrifuge (Hunan Kada scientific instruments Co., ltd., DL 6M), high-speed disperser (Shanghai Muxuan Ultrafiltration, MXF-A1015), vacuum suction filter (Zhengzhengzhuocheng instruments and technologies Co., SHZ-D111), portable infrared spectrum emissivity instrument (Maktia Co., ET-10).
The invention relates to an infrared ultra-low emissivity coating compatible with optical camouflage and a preparation method thereof, and the technical principle of the coating mainly comprises the following steps:
the method for coating the infrared transparent pigment with silver provided by the invention has the advantages that the preparation method is simple and environment-friendly, the influence on the dispersion performance, conductivity and emissivity of silver powder is extremely small, and the glossiness and spectral reflectivity of the surface of the silver powder can be effectively reduced; the coating can be applied to the infrared stealth coating, so that the use amount of optical pigment/dye can be effectively reduced, and an infrared ultra-low emissivity coating compatible with optical camouflage can be obtained.
Compared with pure silver powder filler, the silver powder/infrared transparent pigment composite material after coating treatment has obvious improvement in light resistance, weather resistance, heat resistance, oxidation resistance, heat stability and corrosion resistance.
Based on the principle, the invention provides an infrared ultra-low emissivity coating compatible with optical camouflage and a preparation method thereof. The method specifically comprises the following steps:
(1) A preparation method of a low-brightness and low-emissivity composite pigment comprises the following steps:
s1: surface treatment of flake silver powder
Accurately weighing 200-400 g of flake silver powder, sequentially adding 100-500 ml of solvent, 20-50 ml of dilute acid solution with mass fraction of 2% and 0.5-1.0 g of surfactant, heating and stirring for 2-4 h at constant temperature of 40-60 ℃, removing impurities and deoxidizing the surface of the silver powder, taking out the treated silver powder, respectively washing twice with deionized water and absolute ethyl alcohol, filtering, and drying in vacuum for later use;
the particle size of the flake silver powder is 5-12 mu m, and the preferable particle size is 6-8 mu m;
the solvent is one of deionized water, absolute ethyl alcohol, acetone, toluene and butyl acetate;
the dilute acid solution is a dilute nitric acid solution and a dilute hydrochloric acid solution, and the mass fraction of the dilute acid solution is 0.5-5%, preferably a dilute nitric acid solution;
the surfactant is one of alkyl alcohol amide, alkylphenol ethoxylates ((TX-10), sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
S2: preparation of flake silver powder @ pigment composite
Weighing 50-100 g of processed flaky silver powder and 5-10 g of infrared transparent pigment, adding 5-10% of infrared transparent resin by mass, then transferring to a constant-temperature water bath kettle at 60-80 ℃ for magnetic stirring reaction for 2-6 h, fully coating the resin and pigment on the surface of the silver powder, decompressing and filtering, and then vacuum drying for 2-4 h to obtain the flaky silver powder@pigment composite material, wherein the color coordinates and emissivity of the composite material are shown in Table 1.
The dye with good infrared transparency is perylene compound pigment, which is perylene-red (3, 4,9, 10-perylene tetracarboxylic anhydride), perylene-black (N, N-di (4-methoxybenzyl) perylene-3, 4,9, 10-dicarboximide) and perylene-yellow (1, 6, 10-tribromo-N- (cyclohexyl) perylene-3, 4-dicarboximide) respectively;
the perylene compound pigment has high tinting strength, organic solvent resistance, acid and alkali resistance, light resistance, weather resistance and heat resistance stability, and is transparent to a near infrared transparent region.
The infrared transparent resin is one of ethylene propylene diene monomer resin, SEBS resin and fluorocarbon resin; further preferred three resins are almost transparent in the solar radiation band, have little or only weak absorption in the infrared band, and have excellent environmental stability, and are very suitable for infrared film-forming resins of a specific wavelength band alone.
(2) An infrared ultra-low emissivity coating compatible with optical camouflage and a preparation method thereof comprise the following steps:
s1: according to the mass ratio (25-40): (15-20): (10-20): (2-5): (1-3): (25-35) weighing a film forming substance, silver powder@pigment composite material, color paste of various colors, a thickening agent, other auxiliary agents and a solvent, and standing alone for later use;
s2: sequentially adding a film forming substance, a solvent, a silver powder@pigment composite material, a thickener and other auxiliary agents into a container for high-speed dispersion, adding various color pastes according to a color matching principle to prepare camouflage colors meeting national army standard, and carrying out high-speed grinding and dispersion for 2h under the condition of 800-1500 rpm; adjusting the viscosity to 20-25 s, spraying on a tinplate, and baking at 100 ℃ for 10min to obtain an infrared ultra-low emissivity coating compatible with optical camouflage; the color coordinates and emissivity of each coating are shown in table 2.
The film forming substance is one of acrylic resin, polyurethane resin and epoxy resin;
the solvent is one of absolute ethyl alcohol, acetone, toluene and butyl acetate;
the color paste of each color is cobalt blue color paste, 1102 scarlet color paste, 112 yellow color paste and carbon black color paste;
the other auxiliary agents are dispersing agents, defoamers, adhesion promoters and film forming auxiliary agents.
Wherein, the color coordinates and emissivity of the silver powder and silver powder coated perylene pigment composite material are as follows:
TABLE 1 color coordinates and emissivity of silver powder and silver powder coated perylene pigment composite
TABLE 2 color coordinates and emissivity of optically camouflage compatible infrared ultra low emissivity coatings in the examples
Example 1
The invention provides an infrared ultra-low emissivity coating compatible with optical camouflage and a preparation method thereof.
The method comprises the following steps:
(1) Preparation method of low-brightness low-emissivity composite pigment
The method comprises the following steps:
s1: surface treatment of flake silver powder
Accurately weighing 250g of flake silver powder, sequentially adding 200ml of absolute ethyl alcohol solvent, 20ml of dilute nitric acid solution and 0.5g of surfactant sodium dodecyl benzene sulfonate, heating and stirring for 2 hours at a constant temperature of 50 ℃ to remove impurities and deoxidize the surface of the silver powder, centrifuging by a centrifuge, washing the obtained treated silver powder with deionized water and absolute ethyl alcohol twice respectively, and drying for later use;
s2: preparation of flake silver powder @ pigment composite
Weighing 50g of treated flaky silver powder and 5g of perylene-black infrared transparent pigment, adding the treated flaky silver powder and 5g of perylene-black infrared transparent pigment into an absolute ethyl alcohol solvent, adding ethylene propylene diene monomer infrared transparent resin with the mass fraction of 5%, then transferring the mixture into a constant-temperature water bath kettle at 60 ℃ for magnetic stirring reaction for 4 hours, fully coating the resin and the pigment on the surface of the silver powder, and carrying out reduced pressure filtration and drying for 2 hours to obtain the silver powder/perylene-black composite material; the scanning electron microscope image and the photo of the material are shown in fig. 1, the spectrum reflection curve of the material is shown in fig. 2, and the color coordinates and the emissivity of the material are shown in table 1.
(2) Infrared ultralow-emissivity coating compatible with optical camouflage and preparation method thereof
The method comprises the following steps:
s1: according to the mass ratio of 35:15:12:4:1:33 weighing acrylic resin, flake silver powder/perylene-black composite material, color paste of various colors, thickener, other auxiliary agents (dispersing agent, defoamer, adhesion promoter and film forming auxiliary agent) and absolute ethyl alcohol and standing alone for standby;
s2: sequentially adding acrylic resin, absolute ethyl alcohol, flaky silver powder/perylene-black composite material, a thickening agent, a dispersing agent, a defoaming agent, an adhesion promoter and a film forming auxiliary agent into a container for high-speed dispersion, adding color paste according to a color matching principle to prepare camouflage color conforming to national army standard, and grinding and dispersing for 2 hours at a high speed under the condition of 1000 rpm; the viscosity is adjusted to 20 to 25 seconds, the coating is sprayed on a tinplate and baked for 10 minutes at the temperature of 100 ℃ to obtain the infrared ultra-low emissivity black BN1324 camouflage coating compatible with optical camouflage.
Results: the color coordinate values and emissivity of the BN1324 black camouflage coating prepared in the embodiment are shown in Table 2; the color difference value between the color of the coating and the national army standard color BN1324 is 0.68, the emissivity of the coating in an infrared band of 3-5 mu m is 0.193,8-14 mu m, and the coating is 0.208, so that the coating has excellent infrared camouflage performance while meeting the requirements of visible light camouflage. The infrared stealth effect is shown in figure 3.
Example 2
The invention provides another infrared ultra-low emissivity coating compatible with optical camouflage and a preparation method thereof.
The method comprises the following steps:
(1) Preparation method of low-brightness low-emissivity composite pigment
The method comprises the following steps:
s1 surface treatment of flake silver powder
Accurately weighing 300g of flake silver powder, sequentially adding 300ml of absolute ethyl alcohol solvent, 25ml of dilute nitric acid solution and 0.5g of surfactant sodium dodecyl sulfate, heating and stirring for 2 hours at a constant temperature of 60 ℃ to remove impurities and deoxidize the surface of the silver powder, centrifuging by a centrifuge, washing the obtained treated silver powder with deionized water and absolute ethyl alcohol twice respectively, and drying for later use;
s2, preparation of flake silver powder @ pigment composite material
Weighing 60g of treated flaky silver powder and 6g of perylene-red (3, 4,9, 10-perylene tetracarboxylic anhydride) infrared transparent pigment, adding the 60g of treated flaky silver powder and 6g of perylene-red (3, 4,9, 10-perylene tetracarboxylic anhydride) infrared transparent pigment into a toluene solvent, adding SEBS infrared transparent resin with the mass fraction of 5%, then transferring to a 60 ℃ constant-temperature water bath kettle, magnetically stirring and reacting for 4 hours, fully coating the resin and the pigment on the surface of the silver powder, filtering under reduced pressure, and drying for 2 hours to obtain flaky silver powder/perylene-red composite material; the color coordinates and emissivity of the materials are shown in table 1.
(2) Infrared ultralow-emissivity coating compatible with optical camouflage and preparation method thereof
The method comprises the following steps:
s1: according to the mass ratio of 38:15:14:4:1:30, weighing acrylic resin, flake silver powder/perylene-black composite material, color paste of various colors, thickener, other auxiliary agents (dispersing agent, defoamer, adhesion promoter and film forming auxiliary agent) and absolute ethyl alcohol and standing alone for standby;
s2: sequentially adding polyurethane resin, absolute ethyl alcohol, flake silver powder/perylene-red composite material, a thickening agent, a dispersing agent, a defoaming agent, an adhesion promoter and a film forming auxiliary agent into a container for high-speed dispersion, adding color paste according to a color matching principle to prepare camouflage color conforming to national army standard, and grinding and dispersing for 2 hours at a high speed under the condition of 1200 rpm; the viscosity is regulated to 20 to 25 seconds, the coating is sprayed on a tinplate and baked for 10 minutes at the temperature of 100 ℃ to obtain the infrared ultra-low emissivity sandy soil color SE2535 coating compatible with optical camouflage.
Results: the color coordinate values and emissivity of the SE2535 sandy soil color camouflage coating prepared in the embodiment are shown in table 2; the color difference value between the color of the coating and the standard color SE2535 of the national army standard is 0.54, the emissivity of the coating in an infrared band is 0.187,8-14 mu m and the emissivity of the coating in an infrared band is 0.196, and the coating has excellent infrared camouflage performance while meeting the requirements of visible light camouflage.
Example 3
The invention provides another infrared ultra-low emissivity coating compatible with optical camouflage and a preparation method thereof.
The method comprises the following steps:
(1) A preparation method of a low-brightness and low-emissivity composite pigment comprises the following steps:
s1 surface treatment of flake silver powder
Accurately weighing 350g of flake silver powder, sequentially adding 350ml of absolute ethyl alcohol solvent, 35ml of dilute nitric acid solution and 0.7g of surfactant sodium dodecyl benzene sulfonate, heating and stirring for 2 hours at a constant temperature of 50 ℃ to remove impurities and deoxidize the surface of the silver powder, centrifuging by a centrifuge, washing the obtained treated silver powder with deionized water and absolute ethyl alcohol twice respectively, and drying for later use;
s2, preparation of flake silver powder @ pigment composite material
Weighing 100g of treated flaky silver powder and 10g of perylene-yellow (1, 6, 10-tribromo-N- (cyclohexyl) perylene-3, 4-dicarboxylic acid imide) infrared transparent pigment, adding into an absolute ethyl alcohol solvent, adding fluorocarbon resin infrared transparent resin with mass fraction of 5%, then transferring to a 60 ℃ constant temperature water bath kettle, magnetically stirring and reacting for 4 hours, fully coating the resin and pigment on the surface of the silver powder, filtering under reduced pressure, and drying for 2 hours to obtain flaky silver powder/perylene-yellow composite material; the color coordinates and emissivity of the materials are shown in table 1.
(2) Infrared ultralow-emissivity coating compatible with optical camouflage and preparation method thereof
The method comprises the following steps:
s1: according to the mass ratio of 35:18:12:4:1:30, weighing acrylic resin, flake silver powder/perylene-black composite material, color paste of various colors, thickener, other auxiliary agents (dispersing agent, defoamer, adhesion promoter and film forming auxiliary agent) and absolute ethyl alcohol and standing alone for standby;
s2: sequentially adding epoxy resin, absolute ethyl alcohol, flake silver powder/perylene-black composite material, a thickening agent, a dispersing agent, a defoaming agent, an adhesion promoter and a film forming auxiliary agent into a container for high-speed dispersion, adding color paste according to a color matching principle to prepare camouflage color conforming to national army standard, and grinding and dispersing for 2 hours at a high speed under the condition of 1000 rpm; the viscosity is regulated to 20 to 25 seconds, the coating is sprayed on a tinplate and baked for 10 minutes at the temperature of 100 ℃ to obtain the infrared ultra-low emissivity dark green DG0730 coating compatible with optical camouflage.
Results: the color coordinate values and emissivity of the DG0730 green camouflage coating prepared in the embodiment are shown in Table 2; the color difference value between the color of the coating and the standard color DG0730 of the national army standard is 0.62, the emissivity of the coating in an infrared band is 0.245,8-14 mu m and the emissivity of the coating in an infrared band is 0.280, and the coating has excellent infrared camouflage performance while meeting the requirements of visible light camouflage.
It should be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (9)
1. The preparation method of the infrared ultra-low emissivity coating compatible with optical camouflage is characterized by comprising the following steps of:
(1) A preparation method of a low-brightness and low-emissivity composite pigment comprises the following steps:
s1 surface treatment of flake silver powder
Accurately weighing 200-400 g of flake silver powder, sequentially adding 100-500 ml of solvent, 20-50 ml of dilute acid solution and 0.5-1.0 g of surfactant, heating and stirring for 2-4 hours at the constant temperature of 40-60 ℃ to remove impurities and deoxidize the surface of the silver powder, centrifuging by a centrifuge, washing the obtained treated silver powder with deionized water and absolute ethyl alcohol respectively, and drying for later use;
s2, preparation of flake silver powder @ pigment composite material
Weighing 50-100 g of processed flaky silver powder and 5-10 g of infrared transparent pigment, adding the infrared transparent resin with the mass fraction of 5-10% into a solvent, transferring to a constant-temperature water bath kettle with the temperature of 60-80 ℃ for magnetic stirring reaction for 2-6 hours, fully coating the resin and the pigment on the surface of the silver powder, decompressing, filtering, and drying for 2-4 hours to obtain the flaky silver powder@pigment composite material;
the infrared transparent pigment is dye with good infrared transparent performance, is perylene compound pigment, and comprises perylene-red, perylene-black and perylene-yellow;
(2) The preparation method of the infrared ultra-low emissivity coating compatible with optical camouflage comprises the following steps:
s1: according to the mass ratio (25-40): (15-20): (10-20): (2-5): (1-3): (25-30) weighing a film forming substance, silver powder@pigment composite material, color paste of various colors, a thickening agent, other auxiliary agents and a solvent, and standing alone for later use;
s2: sequentially adding a film forming substance, a solvent, a silver powder@pigment composite material, a thickener and other auxiliary agents into a container for high-speed dispersion, adding various color pastes according to a color matching principle, blending to obtain camouflage colors meeting national army standard, and carrying out high-speed grinding and dispersing for 2h under the condition of 800-1500 rpm; and (3) adjusting the viscosity to 20-25 s, spraying the coating on a tinplate, and baking the coating at 100 ℃ for 10min to obtain the infrared ultra-low emissivity coating compatible with optical camouflage.
2. The method for preparing the infrared ultra-low emissivity coating compatible with optical camouflage according to claim 1, wherein the particle size of the flake silver powder is 5-10 μm.
3. The method of claim 1, wherein the solvent comprises absolute ethanol, acetone, toluene, butyl acetate.
4. The method for producing an optically camouflage compatible infrared ultra low emissivity coating of claim 1, wherein said dilute acid solution comprises a dilute nitric acid solution, a dilute hydrochloric acid solution; the mass fraction of the dilute acid solution is 0.5-5%.
5. The method for preparing an optically camouflage-compatible infrared ultra low emissivity coating of claim 1, wherein said surfactant comprises an alkyl alcohol amide, an alkyl phenol polyoxyethylene ether, sodium dodecyl benzene sulfonate, and sodium dodecyl sulfate.
6. The method of claim 1, wherein the infrared transparent resin comprises ethylene propylene diene monomer, SEBS resin, fluorocarbon resin.
7. The method of claim 1, wherein the film-forming material comprises an acrylic resin, a polyurethane resin, and an epoxy resin.
8. The method for preparing the infrared ultra-low emissivity coating compatible with optical camouflage according to claim 1, wherein each color paste comprises cobalt blue paste, 1102 scarlet paste, 112 yellow paste and carbon black paste; the other auxiliary agents include dispersing agents, defoamers, adhesion promoters and film forming auxiliary agents.
9. An infrared ultra-low emissivity coating prepared by the method for preparing an infrared ultra-low emissivity coating compatible with optical camouflage according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310767894.6A CN117070091B (en) | 2023-06-27 | 2023-06-27 | Infrared ultralow-emissivity coating compatible with optical camouflage and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310767894.6A CN117070091B (en) | 2023-06-27 | 2023-06-27 | Infrared ultralow-emissivity coating compatible with optical camouflage and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117070091A CN117070091A (en) | 2023-11-17 |
| CN117070091B true CN117070091B (en) | 2024-03-08 |
Family
ID=88710371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310767894.6A Active CN117070091B (en) | 2023-06-27 | 2023-06-27 | Infrared ultralow-emissivity coating compatible with optical camouflage and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117070091B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319083A (en) * | 1990-11-03 | 1994-06-07 | Hoechst Aktiengesellschaft | Black peryene-3,4,9,10-tetracarboxylic diimides, their preparation and use |
| CN102712821A (en) * | 2009-10-28 | 2012-10-03 | Ppg工业俄亥俄公司 | Solar reflective coatings and coating systems |
| WO2023092227A1 (en) * | 2021-11-23 | 2023-06-01 | Neverfrost Inc. | Low emissivity materials and associate methods |
-
2023
- 2023-06-27 CN CN202310767894.6A patent/CN117070091B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319083A (en) * | 1990-11-03 | 1994-06-07 | Hoechst Aktiengesellschaft | Black peryene-3,4,9,10-tetracarboxylic diimides, their preparation and use |
| CN102712821A (en) * | 2009-10-28 | 2012-10-03 | Ppg工业俄亥俄公司 | Solar reflective coatings and coating systems |
| WO2023092227A1 (en) * | 2021-11-23 | 2023-06-01 | Neverfrost Inc. | Low emissivity materials and associate methods |
Non-Patent Citations (4)
| Title |
|---|
| Silver-modified chromium(Ⅲ) oxide as multi-band compatible stealth materials for visual/infrared stealth and radar wave transmission;Xia Chai等;Composites Science and Technology;第216卷;全文 * |
| 周馨我.功能材料学.北京理工大学出版社,2002,第275页. * |
| 红外隐身涂料粘结剂的研究进展;杨力祥;程海峰;张朝阳;嵇海宁;刘东青;;材料保护(S1);全文 * |
| 胡传炘.表面处理手册.北京工业大学出版社,2004,第531页第1-2,4段. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117070091A (en) | 2023-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108610725A (en) | Multiband, multilayer electromagnetic matching camouflage paint system and its application | |
| CN108485361B (en) | Graphene-containing infrared low-emissivity coating | |
| CN104684979A (en) | A colorant including a mixture of pigments | |
| CN117070091B (en) | Infrared ultralow-emissivity coating compatible with optical camouflage and preparation method thereof | |
| CN104403440B (en) | Multicolor infrared low-emissivity environmental protection coating | |
| CN115322641A (en) | High-absorptivity stray light inhibition coating and preparation method and application thereof | |
| WO2022088114A1 (en) | Water-based paint special for glass substrates and preparation method therefor | |
| CN117757301A (en) | Environment-friendly high-gloss water-based ink and preparation method thereof | |
| CN114806254A (en) | Low-temperature-resistance environment-friendly infrared stealth material with wave band selection function and preparation method thereof | |
| CN102732142A (en) | Water-based pearlescent coating solution for digital printing and preparation method thereof | |
| CN113388272B (en) | Coated aluminum powder, preparation method thereof and coating containing coated aluminum powder | |
| CN116218360A (en) | Shading sheet coating and preparation method thereof, and shading sheet | |
| CN114479509B (en) | Preparation method of uniformly dispersed pigment red | |
| US20030030037A1 (en) | Transparent electrically conductive film and display device | |
| JP3403578B2 (en) | Antireflection colored transparent conductive film and cathode ray tube | |
| CN117402509A (en) | ATO coated silver powder composite material, preparation method thereof and infrared stealth coating | |
| CN114940845A (en) | Organic black paste with infrared transmission function and preparation method thereof | |
| CN114572946A (en) | Preparation method for rapidly preparing high-brightness black phosphorus quantum dot by ball milling method and black phosphorus quantum dot | |
| CN114232352A (en) | Flexible conductive cloth and preparation method thereof | |
| CN113429851A (en) | Three-color gradient paint and preparation method thereof | |
| CN105949901A (en) | Automatic spraying camouflage coating for manipulators and method for preparing automatic spraying camouflage coating | |
| CN108219700B (en) | Preparation method of color functional layer of window film, window film containing color functional layer and preparation method of window film | |
| US3694239A (en) | Method of grinding pigment | |
| CN112898849B (en) | Low-VOC aqueous high-flash aluminum powder paint special for commercial bread maker and preparation method thereof | |
| CN116768894B (en) | High-weatherability visible light absorption and infrared transparent dye and synthetic method and application 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |