CN102618157A - Infrared low-emissivity coating material and preparation method thereof - Google Patents
Infrared low-emissivity coating material and preparation method thereof Download PDFInfo
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Abstract
An infrared low-emissivity coating material and a preparation method thereof belong to the technical field of functional materials. The infrared low-emissivity coating material comprises the following components by weight: 0.8 to 1 part of red slurry, 2 to 4 parts of yellow slurry, 1 to 3 parts of dispersing slurry of sheet aluminium powder, 35 to 37 parts of dispersing slurry of sheet aluminium powder coated with silicon dioxide or ferric oxide, 50 to 58 parts of solvent, 3 to 5 parts of curing agent and 0.1 to 0.3 part of flatting agent. The infrared low-emissivity coating material provided by the invention can simulate the spectral reflection curve of the northern ocher background, wherein a near infrared band has higher solar reflectivity, the average emissivity of a thermal infrared band of 3 to 5 Mum is lower than 0.35, and the average emissivity of a thermal infrared band of 8 to 14 Mum is lower than 0.45; and industrial production can be achieved.
Description
Technical field
The invention belongs to technical field of function materials, relate to energy saving and environment friendly architectural decoration coating material and infrared camouflage with infrared low-emissivity coating and preparation method.
Background technology
Along with industrial fast development, energy problem more and more becomes the conspicuous contradiction of puzzlement socio-economic development.Therefore, people more and more pay close attention to the consumption problem of the energy when stressing to increase productivity, and energy-saving and cost-reducing, energy-conserving and environment-protective, EER etc. have become social hotspots vocabulary, also become hot spot technology with the various technology that improve energy use efficiency thereupon.
Optical research shows that the reflectivity of opaque article is high more, and emittance is just low more.Therefore under the visible light condition, the material with high reflection characteristic is the first-selection of energy saving and environment friendly architectural decoration coating material; Simultaneously, under night or infrared light condition, the low infrared emission characteristic of highly reflective material makes it to become the preferred material of infrared camouflage again.
The reflection of the height of metallic substance, low infrared emission characteristic make metallic particles become the energy saving and environment friendly architectural decoration coating material of this type and the infrared camouflage high quality filler with infrared low-emissivity coating; Especially the metallic aluminium powder price is comparatively cheap, makes to be used widely based on the coating of various metallic aluminium powders or modified metal aluminium powder.
Number of patent application be CN200510027124.X disclosure of the Invention a kind of flake aluminum pigment and preparation method thereof of the surperficial coating hydrous red stone (iron oxide yellow) that has low-launch-rate at infrared band.It adopts the surface with low-launch-rate to coat the flake aluminum of iron oxide yellow at infrared band, and its median size is 1～100 μ m, and tarnish, khaki color, antioxidant property are good.The average emitted rate of infrared band (wavelength 8～14 μ m) is 0.50～0.60.Though this invention relates to visible light and far infrared band, emittance remains further to be reduced still greater than 0.5.
Another correlation technique is that number of patent application is the invention of CN201010201772.3.This invention provides a kind of optically-active polyurethane-imide infrared low-emissivity material and preparation method thereof.This material is by R or S type 1; 1 '-dinaphthalene-2; 2 '-diphenol, vulcabond and dianhydride monomer; Obtain through hydrogen transference addition three monomer polymerizations, its general structure is: the second-order transition temperature of said material is 40 °～130 ° greater than 250 ℃, heat decomposition temperature greater than 300 ℃, specific rotation absolute value, 25 ℃ down the infrared emittance of 8～14 mu m wavebands be 0.400～0.800.This invention just is directed against the emittance of thermal infrared wave band, not mentioned visible light wave range.
Summary of the invention
The present invention provides a kind of infrared low-emissivity coating and preparation method thereof; Said infrared low-emissivity coating has high reflection characteristic and the low emission characteristic under the infrared light condition under the visible light condition, and (the near infrared solar reflectivity surpasses 70%; And the infrared band average emitted rate of 3-5 μ m is lower than 0.30, the infrared band average emitted rate of 8-14 μ m is lower than 0.40); Outward appearance is khaki color, is applicable to used for building exterior wall decoration and multiband infrared camouflage.The present invention provides the preparation method of said infrared low-emissivity coating simultaneously, is applicable to suitability for industrialized production.
Technical scheme of the present invention is following:
A kind of infrared low-emissivity coating contains dispersed paste, solvent, solidifying agent and the flow agent of the flake aluminum of the dispersed paste of red slurry, yellow slurry, flake aluminum, surperficial coated silica or red stone; The mass fraction of each component is: 0.8～1 part in red slurry, yellow slurry are 2～4 parts, 1～3 part of the dispersed paste of flake aluminum; 35～37 parts of the dispersed pastes of the flake aluminum of surface coated silica or red stone; 50～58 parts of solvents, 3～5 parts in solidifying agent, 0.1～0.3 part of flow agent.
Said red slurry is mixed by the mass ratio of iron oxide red, resin and the solvent of median size between 1～5 micron according to 30: 60: 10; After sand mill grinds 4 hours, add 0.1～0.3% the anti-settling agent that is equivalent to iron oxide red, resin and solvent three total mass and process; Said yellow slurry is mixed by the mass ratio of tetrazo organic yellow, resin and the solvent of median size between 1～5 micron according to 30: 60: 10; After sand mill grinds 4 hours, add 0.1～0.3% the anti-settling agent that is equivalent to tetrazo organic yellow, resin and solvent three total mass and process.
The dispersed paste of said flake aluminum is mixed by the mass ratio of flake aluminum and the solvent of median size between 8～26 microns according to 1: 4, adds 0.1～0.3% the dispersion agent that is equivalent to flake aluminum and solvent total mass and processes; Wherein said dispersion agent is the 904S high-molecular type dispersing agent.The purpose that adds dispersion agent is for aluminium powder is effectively scatter.
The dispersed paste of the flake aluminum of said surperficial coated silica or red stone; Mix by flake aluminum, resin and the solvent of surperficial coated silica or the red stone of median size between 20～35 microns mass ratio according to 22: 36: 42; Join in the sand mill rotating speed that changes with PM 1000～2000 then and ground 30 minutes, 1～3% the anti-settling agent that adds the flake aluminum, resin and the solvent three quality summation that are equivalent to surperficial coated silica or red stone at last makes.
The resin that uses when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone is same resin, specifically is that concentration is 45%～55% Hydroxylated acrylic resin.
The anti-settling agent that uses when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone is same anti-settling agent, specifically is organobentonite.The purpose that adds anti-settling agent is the not sedimentation of toner in order to make after grinding.
Use when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone be dissolved in the final coating of preparation in solvent for use for a kind of solvent, specifically formulated according to 1: 1 mass ratio by ETHYLE ACETATE and butylacetate.
Said solidifying agent is that concentration is 45%～55% isocyanic ester.Said flow agent is that concentration is 1%～3% silicon oil liquid.The purpose that adds flow agent is to increase the planeness that is coated with the appearance surface in use for coating.
The preparation method of above-mentioned infrared low-emissivity coating, as shown in Figure 1, may further comprise the steps:
Step 1: prepare red slurry.Said red slurry is mixed by the mass ratio of iron oxide red, resin and the solvent of median size between 1～5 micron according to 30: 60: 10; After sand mill grinds 4 hours, add 0.1～0.3% the anti-settling agent that is equivalent to iron oxide red, resin and solvent three total mass and process.
Step 2: preparation yellow slurry.Said yellow slurry is mixed by the mass ratio of tetrazo organic yellow, resin and the solvent of median size between 1～5 micron according to 30: 60: 10; After sand mill grinds 4 hours, add 0.1～0.3% the anti-settling agent that is equivalent to tetrazo organic yellow, resin and solvent three total mass and process.
Step 3: the dispersed paste of preparation flake aluminum.The dispersed paste of said flake aluminum is mixed by the mass ratio of flake aluminum and the solvent of median size between 8～26 microns according to 1: 4, adds 0.1～0.3% the dispersion agent that is equivalent to flake aluminum and solvent total mass and processes; Wherein said dispersion agent is the 904S high-molecular type dispersing agent.
Step 4: the dispersed paste of the flake aluminum of surperficial coated silica or red stone.The dispersed paste of the flake aluminum of said surperficial coated silica or red stone; Mix by flake aluminum, resin and the solvent of surperficial coated silica or the red stone of median size between 20～35 microns mass ratio according to 22: 36: 42; Join in the sand mill rotating speed that changes with PM 1000～2000 then and ground 30 minutes, 1～3% the anti-settling agent that adds the flake aluminum, resin and the solvent three quality summation that are equivalent to surperficial coated silica or red stone at last makes.
Step 5: coating preparation.Get 35～37 parts of the dispersed pastes of flake aluminum of 1～3 part of dispersed paste, surperficial coated silica or red stone of flake aluminum of 2～4 parts of yellow slurry, step 3 preparation of 0.8～1 part in red slurry, step 2 preparation of step 1 preparation respectively; And 0.1～0.3 part of 50～58 parts of solvents, 3～5 parts in solidifying agent and flow agent, stirring after the mixing obtains final infrared low-emissivity coating.
Wherein:
The resin that uses when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone is same resin, specifically is that concentration is 45%～55% Hydroxylated acrylic resin.
The anti-settling agent that uses when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone is same anti-settling agent, specifically is organobentonite.
Use when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone be dissolved in the final coating of preparation in solvent for use for a kind of solvent, specifically formulated according to 1: 1 mass ratio by ETHYLE ACETATE and butylacetate.
Said solidifying agent is that concentration is 45%～55% isocyanic ester.Said flow agent is that concentration is 1%～3% silicon oil liquid.
The invention has the beneficial effects as follows:
Infrared low-emissivity coating provided by the invention has high reflection characteristic and the low emission characteristic under the infrared light condition under the visible light condition, and (the near infrared solar reflectivity surpasses 70%; And the infrared band average emitted rate of 3-5 μ m is lower than 0.35, the infrared band average emitted rate of 8-14 μ m is lower than 0.45); Outward appearance is khaki color, is applicable to used for building exterior wall decoration and multiband infrared camouflage.
Description of drawings
Fig. 1 is the schematic flow sheet of infrared low-emissivity preparation method for coating provided by the invention.
Fig. 2 is No. 4 sample visible light wave range reflection spectrums.
Fig. 3 is No. 4 sample near-infrared band reflection spectrums.
Fig. 4 is 4 kinds of sample 3-5 mu m waveband reflection spectrums.
Fig. 5 is 4 kinds of sample 8-14 mu m waveband reflection spectrums.
Embodiment
Below in conjunction with embodiment the present invention is described further.
Infrared low-emissivity coating provided by the invention, the preparation process is following:
Step 1: prepare red slurry.Said red slurry is mixed by the mass ratio of iron oxide red, resin and the solvent of median size between 1～5 micron according to 30: 60: 10; After sand mill grinds 4 hours, add 0.1～0.3% the anti-settling agent that is equivalent to iron oxide red, resin and solvent three total mass and process.
Step 2: preparation yellow slurry.Said yellow slurry is mixed by the mass ratio of tetrazo organic yellow, resin and the solvent of median size between 1～5 micron according to 30: 60: 10; After sand mill grinds 4 hours, add 0.1～0.3% the anti-settling agent that is equivalent to tetrazo organic yellow, resin and solvent three total mass and process.
Step 3: the dispersed paste of preparation flake aluminum.The dispersed paste of said flake aluminum is mixed by the mass ratio of flake aluminum and the solvent of median size between 8～26 microns according to 1: 4, adds 0.1～0.3% the dispersion agent that is equivalent to flake aluminum and solvent total mass and processes; Wherein said dispersion agent is the 904S high-molecular type dispersing agent.
Step 4: the dispersed paste of the flake aluminum of surperficial coated silica or red stone.The dispersed paste of the flake aluminum of said surperficial coated silica or red stone; Mix by flake aluminum, resin and the solvent of surperficial coated silica or the red stone of median size between 20～35 microns mass ratio according to 22: 36: 42; Join in the sand mill rotating speed that changes with PM 1000～2000 then and ground 30 minutes, 1～3% the anti-settling agent that adds the flake aluminum, resin and the solvent three quality summation that are equivalent to surperficial coated silica or red stone at last makes.
Step 5: coating preparation.Get 35～37 parts of the dispersed pastes of flake aluminum of 1～3 part of dispersed paste, surperficial coated silica or red stone of flake aluminum of 2～4 parts of yellow slurry, step 3 preparation of 0.8～1 part in red slurry, step 2 preparation of step 1 preparation respectively; And 0.1～0.3 part of 50～58 parts of solvents, 3～5 parts in solidifying agent and flow agent, stirring after the mixing obtains final infrared low-emissivity coating.
Wherein:
The resin that uses when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone is same resin, specifically is that concentration is 45%～55% Hydroxylated acrylic resin.
The anti-settling agent that uses when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone is same anti-settling agent, specifically is organobentonite.
Use when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone be dissolved in the final coating of preparation in solvent for use for a kind of solvent, specifically formulated according to 1: 1 mass ratio by ETHYLE ACETATE and butylacetate.
Said solidifying agent is that concentration is 45%～55% isocyanic ester.Said flow agent is that concentration is 1%～3% silicon oil liquid.
Table 1 is four kinds of infrared low-emissivity coating samples that the present invention prepares; Wherein the median size of the flake aluminum of sample 1 use is 8 microns; The median size of the flake aluminum that sample 2 uses is 16 microns; The median size of the flake aluminum that sample 3 uses is 21 microns, and the median size of the flake aluminum that sample 4 uses is 26 microns.
The said four kinds of sample coating of employing table 1 are coated in four respectively through on the tinplates of polish, place the baking oven drying 30 minutes of 800C then, obtain four kinds of paint film samples respectively.
Table 2 is four kinds of paint film sample actual measurement color parameters, and colour characteristics uses CIE LAB 1976L
*, a
*, b
*Coordinate and scale (are CIE 1976a
*b
*Icon, the D65100 observer) measure and expression, wherein L
*Be (CIE 1976) brill; a
*For (CIE 1976) red-green unit; b
*Be (CIE 1976) Huang-blue unit.Can find out that by table 2 infrared low-emissivity coating appearance provided by the invention is the loess look, comparatively approaching with China loess plateau soil color, can simulate the spectral reflectance curve of China's loess plateau soil at visible light wave range.
Table 3 is the infrared emittance measured result of four kinds of paint film samples, can be found out by table 3, and infrared low-emissivity coating provided by the invention is lower than 0.30 in the infrared band average emitted rate of 3-5 μ m, the infrared band average emitted rate of 8-14 μ m is lower than 0.40.
Table 1
Table 2
The near infrared solar reflectivity:
Near-infrared band is 780nm-2500nm, goes out reflectivity curve through spectrometer measurement, is 72.3% through calculating the near infrared solar reflectivity.
Table 3
The average emitted rate is to add the integrating sphere annex through FTIR Spectrometer FTIR to measure the spectral reflectance value at 3-5 μ m, 8-14 mu m waveband, adopts institute's reflectance value of surveying to calculate the ratio of the emittance of institute's test sample article total emittance at room temperature and synthermal time black matrix according to planck formula.
To sum up; Infrared low-emissivity coating provided by the invention can be simulated northern loess look background spectrum reflectivity curve; The solar reflectivity that the near-infrared band tool is higher; Thermal infrared wave band 3-5 mu m waveband average emitted rate is 0.29, and 8-14 mu m waveband average emitted rate is 0.38, can realize industrial production.
Claims (2)
1. infrared low-emissivity coating contains dispersed paste, solvent, solidifying agent and the flow agent of the flake aluminum of the dispersed paste of red slurry, yellow slurry, flake aluminum, surperficial coated silica or red stone; The mass fraction of each component is: 0.8 ~ 1 part in red slurry, yellow slurry are 2 ~ 4 parts, 1 ~ 3 part of the dispersed paste of flake aluminum; 35 ~ 37 parts of the dispersed pastes of the flake aluminum of surface coated silica or red stone; 50 ~ 58 parts of solvents, 3 ~ 5 parts in solidifying agent, 0.1 ~ 0.3 part of flow agent;
Said red slurry is mixed according to the mass ratio of 30:60:10 by iron oxide red, resin and the solvent of median size between 1 ~ 5 micron, after sand mill grinds 4 hours, adds 0.1 ~ 0.3% the anti-settling agent that is equivalent to iron oxide red, resin and solvent three total mass and processes; Said yellow slurry is mixed by the mass ratio of tetrazo organic yellow, resin and the solvent of median size between 1 ~ 5 micron according to 30:60:10; After sand mill grinds 4 hours, add 0.1 ~ 0.3% the anti-settling agent that is equivalent to tetrazo organic yellow, resin and solvent three total mass and process;
The dispersed paste of said flake aluminum is mixed by the mass ratio of flake aluminum and the solvent of median size between 8 ~ 26 microns according to 1:4, adds 0.1 ~ 0.3% the dispersion agent that is equivalent to flake aluminum and solvent total mass and processes; Wherein said dispersion agent is the 904S high-molecular type dispersing agent;
The dispersed paste of the flake aluminum of said surperficial coated silica or red stone; Mix by flake aluminum, resin and the solvent of surperficial coated silica or the red stone of median size between 20 ~ 35 microns mass ratio according to 22:36:42; Join in the sand mill rotating speed that changes with PM 1000 ~ 2000 then and ground 30 minutes, 1 ~ 3% the anti-settling agent that adds the flake aluminum, resin and the solvent three quality summation that are equivalent to surperficial coated silica or red stone at last makes;
The resin that uses when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone is same resin, specifically is that concentration is 45% ~ 55% Hydroxylated acrylic resin;
The anti-settling agent that uses when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone is same anti-settling agent, specifically is organobentonite;
Use when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone be dissolved in the final coating of preparation in solvent for use for a kind of solvent, specifically formulated according to the mass ratio of 1:1 by ETHYLE ACETATE and butylacetate;
Said solidifying agent is that concentration is 45% ~ 55% isocyanic ester; Said flow agent is that concentration is 1% ~ 3% silicon oil liquid.
2. the preparation method of an infrared low-emissivity coating may further comprise the steps:
Step 1: prepare red slurry; Said red slurry is mixed by the mass ratio of iron oxide red, resin and the solvent of median size between 1～5 micron according to 30: 60: 10; After sand mill grinds 4 hours, add 0.1～0.3% the anti-settling agent that is equivalent to iron oxide red, resin and solvent three total mass and process;
Step 2: preparation yellow slurry; Said yellow slurry is mixed by the mass ratio of tetrazo organic yellow, resin and the solvent of median size between 1～5 micron according to 30: 60: 10; After sand mill grinds 4 hours, add 0.1～0.3% the anti-settling agent that is equivalent to tetrazo organic yellow, resin and solvent three total mass and process;
Step 3: the dispersed paste of preparation flake aluminum; The dispersed paste of said flake aluminum is mixed by the mass ratio of flake aluminum and the solvent of median size between 8～26 microns according to 1: 4, adds 0.1～0.3% the dispersion agent that is equivalent to flake aluminum and solvent total mass and processes; Wherein said dispersion agent is the 904S high-molecular type dispersing agent;
Step 4: the dispersed paste of the flake aluminum of surperficial coated silica or red stone; The dispersed paste of the flake aluminum of said surperficial coated silica or red stone; Mix by flake aluminum, resin and the solvent of surperficial coated silica or the red stone of median size between 20～35 microns mass ratio according to 22: 36: 42; Join in the sand mill rotating speed that changes with PM 1000～2000 then and ground 30 minutes, 1～3% the anti-settling agent that adds the flake aluminum, resin and the solvent three quality summation that are equivalent to surperficial coated silica or red stone at last makes;
Step 5: coating preparation; Get 35～37 parts of the dispersed pastes of flake aluminum of 1～3 part of dispersed paste, surperficial coated silica or red stone of flake aluminum of 2～4 parts of yellow slurry, step 3 preparation of 0.8～1 part in red slurry, step 2 preparation of step 1 preparation respectively; And 0.1～0.3 part of 50～58 parts of solvents, 3～5 parts in solidifying agent and flow agent, stirring after the mixing obtains final infrared low-emissivity coating;
Wherein:
The resin that uses when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone is same resin, specifically is that concentration is 45%～55% Hydroxylated acrylic resin;
The anti-settling agent that uses when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone is same anti-settling agent, specifically is organobentonite;
Use when preparing the dispersed paste of flake aluminum of red slurry, yellow slurry and surperficial coated silica or red stone be dissolved in the final coating of preparation in solvent for use for a kind of solvent, specifically formulated according to 1: 1 mass ratio by ETHYLE ACETATE and butylacetate;
Said solidifying agent is that concentration is 45%～55% isocyanic ester; Said flow agent is that concentration is 1%～3% silicon oil liquid.
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| CN105907241A (en) * | 2016-05-16 | 2016-08-31 | 江苏大学 | Broad-spectrum infrared absorption coating and preparation method thereof |
| CN106280904A (en) * | 2016-08-30 | 2017-01-04 | 镇江爱豪科思电子科技有限公司 | A kind of preparation method of wide spectrum INFRARED ABSORPTION coating |
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| CN108070306A (en) * | 2017-12-20 | 2018-05-25 | 成都斯特斯科技有限公司 | A kind of laser camouflage coating and preparation method thereof |
| CN108913018A (en) * | 2018-06-22 | 2018-11-30 | 西华大学 | A kind of high temperature resistant infrared low-emissivity coating and preparation method thereof |
| CN108913018B (en) * | 2018-06-22 | 2020-07-07 | 西华大学 | High-temperature-resistant infrared low-emissivity coating and preparation method thereof |
| CN113736327A (en) * | 2021-09-08 | 2021-12-03 | 青岛九维华盾科技研究院有限公司 | Optical and thermal infrared camouflage paint and preparation method thereof |
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