CN104250514A - Deep brown near-infrared reflection type heat insulation coating and preparation method thereof - Google Patents
Deep brown near-infrared reflection type heat insulation coating and preparation method thereof Download PDFInfo
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- CN104250514A CN104250514A CN201410500373.5A CN201410500373A CN104250514A CN 104250514 A CN104250514 A CN 104250514A CN 201410500373 A CN201410500373 A CN 201410500373A CN 104250514 A CN104250514 A CN 104250514A
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- infrared reflection
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Abstract
The invention discloses a deep brown near-infrared reflection type heat insulation coating and a preparation method thereof. The heat insulation coating comprises the following components in percentage by weight: 60.5%-68.5% of a film forming material, 23%-27% of near-infrared reflection pigment, 8%-12% of a solvent and 0.3%-0.5% of an assistant, wherein the near-infrared reflection pigment is powder with a general formula of Zn(1-x)MgxFe2O4, and in the formula, x is 0, 0.1, 0.2, 0.3 or 0.4. The preparation method comprises the following steps: mixing the raw materials of the near-infrared reflection pigment, heating in a water bath, drying, and calcining to obtain the near-infrared reflection pigment powder; uniformly mixing the film forming material, the solvent and the assistant according to the ratio of the heat insulation coating, adding the near-infrared reflection pigment, uniformly stirring, and fully dispersing the pigment to obtain the near-infrared reflection type heat insulation coating. The heat insulation coating is environment-friendly and good in heat reflection and heat insulation properties.
Description
Technical field
The invention belongs to reflection type thermal insulation technical field of coatings, particularly a kind of environmental friendliness, to good dark-brown near-infrared reflection type thermal insulating coating of solar thermal energy reflection barrier property and preparation method thereof.
Background technology
In solar radiation energy, ultraviolet band is about containing 5%, and visible light wave range (400-700nm) is about containing 43%, and near-infrared band (700-2500nm) is containing about 52%.Colored near-infrared reflection type thermal insulating coating optionally absorbs and the ripple of certain frequency in reflect visible light wavelength band, thermal insulating coating is made to present certain color, meet demand attractive in appearance, there is very strong reflection at near-infrared band simultaneously, stop solar thermal energy to coating cover material internal delivery, to reduce indoor temperature, reach and improve Working environment, reduce the object of energy consumption for cooling.The field such as urban architecture roofing and exterior wall, oil tank, cold insulation equipment and pipeline can be widely used in, effectively alleviate the urban heat land effect be on the rise, there is higher energysaving effectiveness.
Colored near-infrared reflection type thermal insulating coating forms primarily of resin film-forming material, near-infrared reflection pigment, solvent and auxiliary agent, pigment wherein gives the specific color of thermal insulating coating and near-infrared reflection characteristic, is the main functional filler of near-infrared reflection type thermal insulating coating.The pigment mainly ferrochrome palm fibre (PBR-29 that current dark-brown near-infrared reflection type thermal insulating coating is used, and iron oxide brown (B-13) PBR-33), the wherein oxide compound of ferrochrome palm fibre containing the heavy metal chromium (Cr) to human body and bad environmental, and the dark-brown near-infrared reflection type thermal insulating coating be made up of these pigment, in urgent need to be improved to the reflection barrier property of solar thermal energy.
Summary of the invention
The object of the present invention is to provide a kind of dark-brown near-infrared reflection type thermal insulating coating and preparation method thereof, coating does not contain poisonous and harmful heavy metallic oxide compound, and environmental friendliness is good to the reflection barrier property of solar thermal energy.
The technical solution realizing the object of the invention is: a kind of dark-brown near-infrared reflection type thermal insulating coating, and it forms and weight percentage is, film forming material: 60.5-68.5, near-infrared reflection pigment: 23-27, solvent: 8-12, auxiliary agent: 0.3-0.5; Wherein, described near-infrared reflection pigment is general formula is Zn
(1-x)mg
xfe
2o
4powder, in formula, x=0,0.1,0.2,0.3 or 0.4.
Preferably, described film forming material is alkyd varnish.
Preferably, described solvent is rosin.
Preferably, described auxiliary agent is monoalkoxy phosphorus acyloxy titanic acid ester.
The technical solution realizing another object of the present invention is: a kind of preparation method of dark-brown near-infrared reflection type thermal insulating coating, comprises the steps:
10) near-infrared reflection pigment is prepared: the raw material mixing of infrared reflecting paint nearly, heating in water bath, drying, calcining, obtain near-infrared reflection pigment powder;
20) then, batch mixing: by the thermal insulating coating proportioning shown in table 2 first by film forming material, solvent and auxiliary agent mixing and stirring, then add near-infrared reflection pigment and stir pigment is fully disperseed, obtain near-infrared reflection type thermal insulating coating.
Preferably, described near-infrared reflection pigment step of preparing comprises:
11) raw material mixing: by raw material zinc nitrate hexahydrate, nine nitric hydrate magnesium, Fe(NO3)39H2O, monohydrate potassium, acrylamide, glucose, add in deionized water, be placed in magnetic stirrer 30-40min, obtain the solution that raw material mixes;
12) heating in water bath: raw material mixing solutions is put into water-bath heating in water bath, obtains colloidal sol;
13) dry: colloidal sol to be put into baking oven dry, obtain xerogel;
14) calcine: put into retort furnace after being ground by xerogel and calcine, final obtained near-infrared reflection pigment powder Zn
(1-x)mg
xfe
2o
4, wherein x=0,0.1,0.2,0.3,0.4.
Preferably, in described raw material mixing (11) step, the weight ratio of zinc nitrate hexahydrate, nine nitric hydrate magnesium, Fe(NO3)39H2O, monohydrate potassium, acrylamide, glucose is (2.97-1.78): (0-1.03): 8.08:9.46:6.40:3.5.
Preferably, in described heating in water bath (12) step, Heating temperature is 80 DEG C, and heat-up time is 5-6h.
Preferably, in described drying (13) step, drying temperature is 120-130 DEG C, and time of drying is 2-3h.
Preferably, in described calcining (14) step, calcining temperature is 800-900 DEG C, and calcination time is 3-4h.
The present invention compared with prior art, its remarkable advantage:
1, good to the reflection barrier property of solar thermal energy: near-infrared reflection pigment Zn
(1-x)mg
xfe
2o
4powder, due to intratomic or interatomic charge transtion, at near-infrared band, there is good reflecting properties in dark-brown, energy usable reflection near-infrared band quantity of radiant energy, therefore near-infrared reflection type thermal insulating coating of the present invention, compared with the near-infrared reflection type thermal insulating coating of existing Similar color, have and better intercept solar thermal energy to the performance of coating tectum internal delivery, room temp 4.3 DEG C-5.7 DEG C can be reduced;
2, environmental friendliness: not containing heavy metal oxides such as Cd, Cr, Ni, be conducive to environment protection and human health;
3, cost is low: preparation method is simple, and synthesis device and raw material are easy to get, with low cost.
Below in conjunction with embodiment, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is pigment crude proportioning and pigment composition table.
Fig. 2 is thermal insulating coating proportioning table.
Fig. 3 is heat-proof quality experimental apparatus for testing figure.
Fig. 4 is the box interior temperature difference table between embodiment and comparative example.
Embodiment
Understand the present invention further for ease of those skilled in the art, following examples are all prepared by identical preparation method.
First, prepare near-infrared reflection pigment: the raw material mixing of infrared reflecting paint nearly, heating in water bath, drying, calcining, obtain near-infrared reflection pigment powder; Wherein, pigment crude zinc nitrate hexahydrate, nine nitric hydrate magnesium, Fe(NO3)39H2O, monohydrate potassium, acrylamide, glucose are commercially available analytical pure.Pigment crude proportioning is as shown in table 1, thus to obtain general formula be Zn
(1-x)mg
xfe
2o
4powder, as shown in table 1.
Then, batch mixing: by the thermal insulating coating proportioning shown in table 2 first by film forming material, solvent and auxiliary agent mixing and stirring, then add near-infrared reflection pigment and stir pigment is fully disperseed, obtain near-infrared reflection type thermal insulating coating.
Wherein, alkyd varnish, rosin and monoalkoxy phosphorus acyloxy titanic acid ester are marketable material.
Evenly be painted on aluminium sheet (thickness 2mm) by standard JG/T 23-2001 by the coating of embodiment and comparative example, brush thickness is 40 μm, places 7 days, make near-infrared reflection plate after brushing under physical environment.
For checking the near-infrared reflection effect of heat insulation of dark-brown near-infrared reflection type thermal insulating coating of the present invention, by the coating in embodiment described in table 2 with pressed compared with the coating (comparative example) obtained by the method for mixing identical with the coating in embodiment by commercially available dark-brown iron oxide brown (B-13) pigment.The device that comparative experiments uses as shown in Figure 3.Wherein testing tool comprises: near infrared lamp (BR 125 IR Red, 250 W); Digital thermometer (VC6801A).
In device, casing is hollow, and four sides and base material are polystyrene foam plate, and thickness is 10mm, and the length × wide × height of casing is 80 × 80 × 120mm, pops one's head at the one side perforate fixed thermometer of casing, and probe is positioned at casing center, and concrete steps are as follows:
(1) the near-infrared reflection plate will prepared by embodiment and comparative example, is placed on above casing, and one of brushing paint faces up, and the geometric centre of casing should in the bulb below the heart, and two tanks adjacent facets is at a distance of 180mm;
(2) distance between near infrared lamp and casing vertex is 200mm, opens voltage stabilized source, and the Inside Air Temperature of 30 minutes latter two casings is stablized, and thermometer display numerical value is substantially constant.Calculate temperature gap in two tanks, result is as shown in table 3.The internal temperature of the internal temperature-comparative example casing of temperature head=embodiment casing.
Test result as can be seen from table 3, the box interior temperature that various embodiments of the present invention are corresponding, all lower than the box interior temperature that comparative example is corresponding, difference is respectively-5.3 DEG C ,-5.7 DEG C ,-5.1 DEG C ,-5.5 DEG C ,-4.3 DEG C.Dark-brown near-infrared reflection type thermal insulating coating of the present invention effectively can intercept solar thermal energy to coating tectum internal delivery, reaches reduction interior space temperature, saves hot weather energy consumption for cooling, the effect of alleviating urban heat island effect.And, all do not contain the heavy metal oxides such as Cd, Cr, Ni in raw material and finished product, be conducive to environment protection and human health; Preparation method is simple, and synthesis device and raw material are easy to get, with low cost.
Claims (10)
1. a dark-brown near-infrared reflection type thermal insulating coating, it forms and weight percentage is,
Film forming material: 60.5-68.5;
Near-infrared reflection pigment: 23-27;
Solvent: 8-12;
Auxiliary agent: 0.3-0.5;
Wherein, described near-infrared reflection pigment is Zn
(1-x)mg
xfe
2o
4powder, in formula, x=0,0.1,0.2,0.3 or 0.4.
2. thermal insulating coating according to claim 1, is characterized in that: described film forming material is alkyd varnish.
3. thermal insulating coating according to claim 1, is characterized in that: described solvent is rosin.
4. thermal insulating coating according to claim 1, is characterized in that: described auxiliary agent is monoalkoxy phosphorus acyloxy titanic acid ester.
5. a preparation method for dark-brown near-infrared reflection type thermal insulating coating as claimed in claim 1, comprises the steps:
10) near-infrared reflection pigment is prepared: the raw material mixing of infrared reflecting paint nearly, heating in water bath, drying, calcining, obtain near-infrared reflection pigment powder;
20) then, batch mixing: by the thermal insulating coating proportioning shown in table 2 first by film forming material, solvent and auxiliary agent mixing and stirring, then add near-infrared reflection pigment and stir pigment is fully disperseed, obtain near-infrared reflection type thermal insulating coating.
6. method for preparing insulating mold coating according to claim 5, is characterized in that: described near-infrared reflection pigment step of preparing comprises:
11) raw material mixing: by raw material zinc nitrate hexahydrate, nine nitric hydrate magnesium, Fe(NO3)39H2O, monohydrate potassium, acrylamide, glucose, add in deionized water, after mixing, be placed in magnetic stirrer 30-40min, obtain raw material mixing solutions;
12) heating in water bath: raw material mixing solutions is put into water-bath heating in water bath, obtains colloidal sol;
13) dry: colloidal sol to be put into baking oven dry, obtain xerogel;
14) calcine: put into retort furnace after being ground by xerogel and calcine, final obtained near-infrared reflection pigment powder Zn
(1-x)mg
xfe
2o
4, wherein x=0,0.1,0.2,0.3,0.4.
7. method for preparing insulating mold coating according to claim 6, it is characterized in that: in described raw material mixing (11) step, the weight ratio of zinc nitrate hexahydrate, nine nitric hydrate magnesium, Fe(NO3)39H2O, monohydrate potassium, acrylamide, glucose is (2.97-1.78): (0-1.03): 8.08:9.46:6.40:3.5.
8. method for preparing insulating mold coating according to claim 6, is characterized in that: in described heating in water bath (12) step, and Heating temperature is 80 DEG C, and heat-up time is 5-6h.
9. method for preparing insulating mold coating according to claim 6, is characterized in that: in described drying (13) step, and drying temperature is 120-130 DEG C, and time of drying is 2-3h.
10. method for preparing insulating mold coating according to claim 6, is characterized in that: in described calcining (14) step, and calcining temperature is 800-900 DEG C, and calcination time is 3-4h.
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| CN201410500373.5A CN104250514B (en) | 2014-09-25 | 2014-09-25 | A kind of dark-brown near-infrared reflection type insulating moulding coating and preparation method thereof |
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| CN201410500373.5A CN104250514B (en) | 2014-09-25 | 2014-09-25 | A kind of dark-brown near-infrared reflection type insulating moulding coating and preparation method thereof |
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| CN104250514B CN104250514B (en) | 2016-07-06 |
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Cited By (3)
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| CN106366875A (en) * | 2016-08-27 | 2017-02-01 | 南京理工大学 | Iron-nitrogen-doped aluminaum titanate-based infrared composite material and preparation method thereof |
| CN106366878B (en) * | 2016-08-27 | 2019-04-16 | 南京理工大学 | Manganese/N doping aluminic acid zinc-base infrared composite material and preparation method thereof |
| CN106318162B (en) * | 2016-08-27 | 2019-06-21 | 南京理工大学 | Iron/nitrogen-doped titanic acid magnesium-based infrared composite material and preparation method thereof |
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| WO2013129488A1 (en) * | 2012-02-28 | 2013-09-06 | 株式会社カネカ | Coating composition and coating film obtained from coating composition |
| CN103923505A (en) * | 2014-04-12 | 2014-07-16 | 北京工业大学 | Reddish brown near-infrared reflection pigment and preparation method thereof |
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Patent Citations (6)
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| JP2004027241A (en) * | 2003-10-14 | 2004-01-29 | Nagashima Tokushu Toryo Kk | Thermal insulation coating and its coating method |
| CN101195725A (en) * | 2007-12-29 | 2008-06-11 | 株洲时代新材料科技股份有限公司 | Heat-insulating energy-saving paint for vehicle and method for producing the same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106366875A (en) * | 2016-08-27 | 2017-02-01 | 南京理工大学 | Iron-nitrogen-doped aluminaum titanate-based infrared composite material and preparation method thereof |
| CN106366875B (en) * | 2016-08-27 | 2019-02-22 | 南京理工大学 | Iron/nitrogen-doped titanic acid aluminium base infrared composite material and preparation method thereof |
| CN106366878B (en) * | 2016-08-27 | 2019-04-16 | 南京理工大学 | Manganese/N doping aluminic acid zinc-base infrared composite material and preparation method thereof |
| CN106318162B (en) * | 2016-08-27 | 2019-06-21 | 南京理工大学 | Iron/nitrogen-doped titanic acid magnesium-based infrared composite material and preparation method thereof |
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| CN104250514B (en) | 2016-07-06 |
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