CN103834202A - Colorful reflective thermal-insulation coating and preparation method thereof - Google Patents
Colorful reflective thermal-insulation coating and preparation method thereof Download PDFInfo
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- CN103834202A CN103834202A CN201310746098.0A CN201310746098A CN103834202A CN 103834202 A CN103834202 A CN 103834202A CN 201310746098 A CN201310746098 A CN 201310746098A CN 103834202 A CN103834202 A CN 103834202A
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Abstract
The invention relates to a colorful reflective thermal-insulation coating and a preparation method thereof. The coating is composed of 30 to 50% of a low-absorptivity high-emissivity coating filler (CN101671502), 15 to 30% of acrylic acid, 0.005 to 2% of commercially available Xianlite, Laoan D and Pin'ao color paste, 0.05 to 0.5% of commercially available a German BYK-3521 multifunctional auxiliary agent and 30 to 40% of water. When used in a hot area, the coating can substantially reduce heat effects of solar radiation on a building and decrease temperature rise in the building, so operation energy consumption of temperature adjustment equipment like an air-conditioner is reduced, the coating is applicable to creation of a heat comfort environment in the building, saves mineral energy and reduces environmental pollution, and moreover, various colors of the coating enable requirements for artistic appearance in practical usage to be met. The coating provided by the invention is applicable to the surfaces of buildings, vehicles, outdoor equipment, pipelines and the like and has high economic and social benefits.
Description
Technical field
The present invention relates to the preparation method of a kind of colour reflective thermal insulating coating and this coating, be specifically related to a kind of colour reflective thermal insulating coating with low absorptivity high emissivity and preparation method thereof.Coating of the present invention can be used for the surfaces such as building, the vehicles, outdoor facility, pipeline, is mainly used in building surface.
Background technology
The dream that the mankind of being cool in summer and warm in winter in house pursue since ancient times, regrettably real world often occurs cold in winter and hot in summer, reason is that the sun occurs can not change with seasonal variation compared with the solar absorptance of large variation and material of construction and thermal emissivity in the summer in winter to certain latitude ground input angle, can only carry out constructing architecture thermally comfortable environment with heating and refrigeration, consume in a large number earth fossil energy, contaminate environment, aggravation Global Greenhouse Effect.According to statistics, American Architecture energy consumption has accounted for 38% of the whole America total energy consumption, China only heating energy consumption also exceeded 10%, and along with the generally use building energy consumption growth trend of air-conditioning is swift and violent, " severe power shortage " that midsummer in 2003, the whole nation occurred is a clear proof.For save energy, people adopt light porous material, adiabatic coating etc., offer vent window at top, house, adopt the various ways such as solar reflection coating and light color cooling coating, selective solar spectrum absorbing coating to be incubated insulation to buildings, above-mentioned the whole bag of tricks fails all fully to dispose and utilize sun power in two seasons of summer in winter, therefore all there is very large limitation concerning requiring buildings cool in summer and warm in winter.
In view of the total solar radiation on arrival per second ground can, up to 60,000,000,000,000 kilowatts, be the more than 50,000 times of global gross generation, and be a kind of permanent, clean harmless energy, make full use of sun power and be undoubtedly a kind of effective way that solves architectural energy consumption.In this regard, people have adopted Te Langbai (Trombe) wall, solar cell, TIM(Transparent Insulation Materials) material such as material, heat-collecting roof, adjustable sun wall and device fully dispose and utilize sun power.Wherein TIM material for to apply solar energy absorbing paint on wall face, and then additional aluminium foil heavy curtain combines, and result of study shows that this material can make people almost be completely free of the dependence to earth fossil energy and cosily live.These presentation of results can be built Building Heat a home from home by the reasonable disposal utilization to sun power, thereby thoroughly solve architectural energy consumption and environmental protection problem.
A kind of paint filler with low absorptivity and high emissivity (has been applied for Chinese patent, patent publication No. CN101671502) can be used for preparing reflection type thermal insulation coating, after coating, can effectively stop the rising of material and indoor environment temperature, have broad application prospects in hot area.And this coating is suitable for multiple building materials surface.Related Experimental Study is found, apply at asphalt surface the cooling-down effect that this coating can play 5.2 DEG C, can play the cooling-down effect of 2.5 DEG C at this coating of concrete (mortar) surface-coated, can play the cooling-down effect of 10.8 DEG C at this coating of tar felt surface-coated, can play the cooling-down effect of 3.8 DEG C at this coating of color steel surface-coated, common brick (watt) this coating of surface-coated can play the cooling-down effect of 2.8 DEG C.Test result in actual room shows, top scribbles the room of this coating and the room that same top is exposed color steel, and maximum temperature difference reaches 5.0 DEG C in the daytime.As (having applied for Chinese patent with this paint filler with low absorptivity and high emissivity, patent publication No. CN101671502) the reflection type thermal insulation coating commodity made, due to the selection of pigment type, make the color effect etc. in work-ing life of reflection type thermal insulation coating satisfied not.
Summary of the invention
The deficiency existing for commercial coating, one of object of the present invention is to provide one to have rich colors, and possesses the reflective heat-insulation paint of low absorptivity high emissivity character;
Another object of the present invention is to provide the preparation method of this colour reflective thermal insulating coating.
In order to achieve the above object, the present invention is based on utilizing the excellent reflection heat-proof quality of this kind of paint filler with low absorptivity and high emissivity, be prepared into a kind of colour reflective thermal insulating coating with vinylformic acid, pigment, water, the auxiliary agent of suitable kind and mass ratio, meeting this coating is possessing on the basis of low absorptivity high emissivity, have abundant color, adapt to complicated application request.
About the selection of pigment type, the present invention has made following analysis:
Solar radiation is as a kind of hertzian wave, in the time that it is irradiated to body surface, photon can with the atom generation effect of material, bump, thus transmission ofenergy the atom to material, make material atom vibrations aggravation, thereby temperature raises simultaneously by electromagnetic wave energy formula E=h ν formula, E is energy, and h is quantum of action, and ν is frequency.Electromagnetic energy is directly proportional to frequency, and velocity of wave one timing, is inversely proportional to wavelength, and therefore electromagnetic wavelength is longer, and energy is less.But because the vibrational frequency of atom of material etc. is distributed in infrared spectral region more, therefore infrared rays has special heat effect.By analyzing, whitewash is the highest at the reflectivity of visible region, in the time adding the pigment of other color, must make coating absorb and increase in visible region, and the performance of coating is existed to certain impact.For the selection of preparing colo(u)r coating pigment used, should meet some requirements.First, pigment should have good tinting strength and opacifying power, preferably dispersed, bright-colored, chromatogram is complete, to light stablize, the performance such as good weatherability, alkali resistance are good, meanwhile, as the pigment of " shining not hot " coating, also should there is large as far as possible reflectivity.
General building coating is divided into mineral dye and pigment dyestuff with pigment.Mineral dye has strong coloring force, and opacifying power is good, and cost is low, good weatherability, the features such as alkali resistance excellence.Common white inorganic pigment has titanium white (titanium dioxide), and it is divided into rutile-type and anatase titanium dioxide, and rutile-type refractive index is high, and opacifying power is good, photostabilization is strong, and interior rustproof lacquer all can use, and anatase titanium dioxide opacifying power is slightly poor, photostabilization is poor, and easily efflorescence, mainly as interior wall coating.In addition also have zinc white (zinc oxide), it belongs to reactive pigment, needs to pay special attention to stability in use.And zinc sulfide white (lithopone) is easy to change through solar exposure, weathering resistance is poor, can not serve as exterior coating.
Common inorganic red pigment is red iron oxide, and tinting strength and opacifying power are good, and alkaline-resisting photostabilization is fabulous.Iron oxide yellow (iron oxide yellow) is needle-like aquo compound, and tinting strength is good, and strong covering power is fast light alkaline-resisting.And in blue inorganic pigment, have ultramarine, and cobalt blue etc., all there is tinting strength in them, the shortcoming that opacifying power is not good.It should be noted that in common mineral dye, the pigment such as barba hispanica, lead-chrome yellow and molybdenum red is not useable for building coating, their alkali resistance is poor, to alkali sensitivity, under alkaline condition, easy to change, and emulsion paint this as alkalescence, the ground of building coating application is that cement concrete is strong basicity.
Pigment dyestuff photostabilization, weathering resistance, alkali resistance, tinting strength, opacifying power are all better.The machine pigment of common are has monoazo red, and the Chinese is husky yellow.And blue, with the green phthalocyanine pigment that is mainly, be widely used, it has good tinting strength, opacifying power, weathering resistance.The important feature that pigment dyestuff is different from mineral dye is that simple particle diameter is less, so pigment dyestuff is easily washed out in exterior coating, is prone to and fades, the phenomenons such as variable color.In view of above-mentioned analysis, the present invention has abundant color by the colour reflective thermal insulating coating that repeatedly repetition test discovery adopts following component and content to form, and possesses low absorptivity high emissivity character, long service life.
Coating composition and ratio of the present invention following (mass percent):
Above total amount of material meets 100%;
Mill base is that commercially available floridity spy, labor is pacified the one in D series, product mill base difficult to understand;
Multifunctional assistant is commercially available German Bi Ke BYK-3521.
Paint filler with low absorptivity and high emissivity is the paint filler with low absorptivity and high emissivity described in Chinese patent CN101671502.This filler feature is: this filler is the mixture of alkaline earth metal carbonate, alkaline earth metal sulphate, alkaline earth metal silicate, alkali earth metal aluminate and alkaline-earth metal fluoaluminate; The mass percent of this paint filler with low absorptivity and high emissivity is composed as follows: alkaline earth metal carbonate 80%-95%, alkaline earth metal sulphate 0.1%-5%, alkaline earth metal silicate 0.1%-5%, alkali earth metal aluminate 0.1%-5%, alkaline-earth metal fluoaluminate 0.1%-5%, above total amount of material meets 100%.
A kind of preparation method of colour reflective thermal insulating coating, first measure paint filler with low absorptivity and high emissivity by mass percent: vinylformic acid: mill base: multifunctional assistant: water=30%-50%:15%-30%:0.005%-2%:0.05%-0.5%:30%-40%, then by paint filler with low absorptivity and high emissivity, vinylformic acid, multifunctional assistant and water mix, and stir and obtain coating; Finally add in coating after making the mill base aqueous solution soluble in water mill base, mix, make this colour reflective thermal insulating coating.
The using method of colour reflective thermal insulating coating of the present invention and action effect:
1. while use, this coating is directly coated on to building surface, can be applicable to roofing or surface of wall, coating thickness is that 50-100 μ m. adopts FXL-1 specific absorption normal emittance determinator to carry out the measurement of specific absorption to colored " shining not hot " sample of coating, wherein in blue reflective heat-insulation paint, the addition content of mill base and the measurement result of specific absorption are as shown in table 1, and in yellow reflective heat-insulation paint, the addition content of mill base and the measurement result of specific absorption are as shown in table 2.
The blue reflective heat-insulation paint specific absorption of table 1 changes experimental result with mill base addition content
The yellow reflective heat-insulation paint specific absorption of table 2 changes experimental result with mill base addition content
From table 1, table 2, along with the increase of dispersible pigment color paste addition content, the specific absorption of coating increases gradually, but amplification reduces gradually, and pigment volume reduces gradually for the impact of specific absorption.For example, when hour (blue mill base addition content is below 0.5%) of pigment addition, specific absorption is more responsive for the interpolation of pigment.Experimental data shows, the specific absorption of " shining not hot " coating is 0.6567, and in the time that pigment addition content is in 0.1%, the increase of specific absorption can be controlled in 8%, meets not obvious and affect coating reflective insulation performance in the situation that, enriches the requirement of coating aesthetic property.Simultaneously because the appearance color of common buildings is all more shallow, so add appearance color that the pigment of certain volume makes coating, to obtain abundant be feasible.
2. test the actual heat-proof quality discovery of this colour reflective thermal insulating coating by heavy natural sunning, adopting the experimental installation that is exposed to the sun in the daytime to contrast to each coating sample the test of being exposed to the sun confirms, colour reflective thermal insulating coating of the present invention has low absorptivity high emissivity character, can make need to the lower the temperature buildings of environment of hot area, in the situation that not consuming fossil energy, make room temp decline 3-10 DEG C, various color has met in use attractive in appearance and requirement anti-dazzle simultaneously.
3. coating of the present invention can be used for the surfaces such as building, the vehicles, outdoor facility, pipeline, is mainly used in building surface.In hot area, the use of this coating can significantly reduce the heat affecting of solar radiation to building, reduces the temperature increasing degree of building interior, thereby reduces the operation energy consumption of the temperature equipments such as air-conditioning, is applicable to creating Building Heat a home from home; In addition, various color can meet in actual use requirement attractive in appearance.
4. in sum, the application of coating of the present invention can improve Building Heat a home from home, saves fossil energy, reduce environmental pollution, brings higher economic and social benefit.
Brief description of the drawings
Fig. 1 is the experimental installation schematic diagram that is exposed to the sun in the daytime of the present invention;
In figure 1-tan by the sun sample; 2-thermopair; 3-porous plastics; 4-wooden case.
Embodiment
Embodiment 1
First prepare the paint filler with low absorptivity and high emissivity described in Chinese patent CN101671502.Measure by mass percentage alkaline earth metal carbonate 80%-95%, alkaline earth metal sulphate 0.1%-5%, alkaline earth metal silicate 0.1%-5%, alkali earth metal aluminate 0.1%-5%, alkaline-earth metal fluoaluminate 0.1%-5%, above total amount of material meets 100%.Said components is mixed and formed this paint filler with low absorptivity and high emissivity (for all embodiment).
Then measure following component by mass percent and content is made blue reflective heat-insulation paint:
Total amount meets 100%.
First the paint filler with low absorptivity and high emissivity weighing by said ratio, vinylformic acid, water, commercially available " German Bi Ke BYK-3521 " multifunctional assistant are mixed, stir, obtain coating; By commercially available " floridity spy " mill base and water mixed dissolution, then mix with coating, stir, can prepare this colour reflective thermal insulating coating.
This colour reflective thermal insulating coating is coated on the aluminium sheet of 300mm × 300mm × 1mm and tans by the sun sample 1, use shown in Fig. 1 and tan by the sun in the daytime experimental installation, carry out outdoor 48h experiment.When experiment, first will tan by the sun case and be placed in one night of environment, and make itself and environment reach thermal equilibrium and use, and choose afterwards under sunny calm or gentle breeze weather, connection line, opens thermopair 2 and multiple-path temperature measurement and carries out thermometric.
Experimental result shows, in the situation of being exposed to the sun on the same day, scribbling the sample 1 that tans by the sun of blue reflective heat-insulation paint, to compare the maximum cooling value of sample that scribbles common commercially available blue paint be 3.0 DEG C, and the sample 1 that tans by the sun that scribbles blue reflective heat-insulation paint is compared the sample temperature difference whole day that scribbles commercially available white reflective heat-insulation paint and is no more than 1.0 DEG C.
Blue reflective heat-insulation paint proportioning is (total amount meets 100%):
Weigh each composition material by said ratio, first above-mentioned paint filler with low absorptivity and high emissivity, vinylformic acid, water, commercially available " German Bi Ke BYK-3521 " multifunctional assistant are mixed, coating stirs to obtain; By commercially available " floridity spy " mill base and water mixed dissolution, then mix with coating, stir, can prepare this colour reflective thermal insulating coating.This coating is coated on the aluminium sheet of 300mm × 300mm × 1mm and makes and tan by the sun sample 1.
Use shown in Fig. 1 and tan by the sun in the daytime experimental installation, carry out outdoor 48h experiment.When experiment, first will tan by the sun case and be placed in one night of environment, and make itself and environment reach thermal equilibrium and use, and choose afterwards under sunny calm or gentle breeze weather, connection line, opens thermopair 2 and multiple-path temperature measurement and carries out thermometric.
Experimental result shows, in the situation of being exposed to the sun on the same day, scribbling the sample 1 that tans by the sun of blue reflective heat-insulation paint, to compare the maximum cooling value of sample that scribbles common commercially available blue paint be 3.6 DEG C, and the sample that scribbles blue reflective heat-insulation paint is compared the sample temperature difference whole day that scribbles commercially available white reflective heat-insulation paint and is no more than 0.5 DEG C.
Blue reflective heat-insulation paint proportioning is (total amount meets 100%):
Weigh each composition material by said ratio, first above-mentioned paint filler with low absorptivity and high emissivity, vinylformic acid, water, commercially available " German Bi Ke BYK-3521 " multifunctional assistant are mixed, coating stirs to obtain; By commercially available " floridity spy " mill base and water mixed dissolution, then mix with coating, stir, can prepare this colour reflective thermal insulating coating.This coating is coated on the aluminium sheet of 300mm × 300mm × 1mm and makes and tan by the sun sample 1, use shown in Fig. 1 and tan by the sun in the daytime experimental installation, carry out outdoor 48h experiment.When experiment, first will tan by the sun case and be placed in one night of environment, and make itself and environment reach thermal equilibrium and use, and choose afterwards under sunny calm or gentle breeze weather, connection line, opens thermopair 2 and multiple-path temperature measurement and carries out thermometric.
Experimental result shows, in the situation of being exposed to the sun on the same day, scribbling the sample 1 that tans by the sun of blue reflective heat-insulation paint, to compare the maximum cooling value of sample that scribbles common commercially available blue paint be 4.2 DEG C, and the sample that scribbles blue reflective heat-insulation paint is compared the sample temperature difference whole day that scribbles commercially available white reflective heat-insulation paint and is no more than 0.2 DEG C.
Yellow reflective heat-insulation paint proportioning following (total amount meets 100%)
Weigh each composition material by said ratio, first above-mentioned paint filler with low absorptivity and high emissivity, vinylformic acid, water, commercially available " German Bi Ke BYK-3521 " multifunctional assistant are mixed, stir as uniform coating; By commercially available " floridity spy " mill base and water mixed dissolution, then mix with coating, stir, can prepare this colour reflective thermal insulating coating.
This coating is coated on the aluminium sheet of 300mm × 300mm × 1mm and tans by the sun sample 1, use shown in Fig. 1 and tan by the sun in the daytime experimental installation, carry out outdoor 48h experiment.When experiment, first will tan by the sun case and be placed in one night of environment, and make itself and environment reach thermal equilibrium and use, and choose afterwards under sunny calm or gentle breeze weather, connection line, opens thermopair 2 and multiple-path temperature measurement and carries out thermometric.
Experimental result shows, in the situation of being exposed to the sun on the same day, scribbling the sample 1 that tans by the sun of yellow reflective heat-insulation paint, to compare the maximum cooling value of sample that scribbles common commercially available blue paint be 3.8 DEG C, and the sample 1 that tans by the sun that scribbles blue reflective heat-insulation paint is compared the sample temperature difference whole day that scribbles commercially available white reflective heat-insulation paint and is no more than 0.5 DEG C.
Embodiment 5
Yellow reflective heat-insulation paint proportioning following (total amount meets 100%)
Weigh each composition material by said ratio, first above-mentioned paint filler with low absorptivity and high emissivity, vinylformic acid, water, commercially available " German Bi Ke BYK-3521 " multifunctional assistant are mixed, stir as uniform coating; By commercially available " floridity spy " mill base and water mixed dissolution, then mix with coating, stir, can prepare this colour reflective thermal insulating coating.
This coating is coated on the aluminium sheet of 300mm × 300mm × 1mm and tans by the sun sample 1, use shown in Fig. 1 and tan by the sun in the daytime experimental installation, carry out outdoor 48h experiment.When experiment, first will tan by the sun case and be placed in one night of environment, and make itself and environment reach thermal equilibrium and use, and choose afterwards under sunny calm or gentle breeze weather, connection line, opens thermopair 2 and multiple-path temperature measurement and carries out thermometric.
Experimental result shows, in the situation of being exposed to the sun on the same day, scribbling the sample 1 that tans by the sun of yellow reflective heat-insulation paint, to compare the maximum cooling value of sample that scribbles common commercially available blue paint be 4.2 DEG C, and the sample 1 that tans by the sun that scribbles blue reflective heat-insulation paint is compared the sample temperature difference whole day that scribbles commercially available white reflective heat-insulation paint and is no more than 0.3 DEG C.
Embodiment 6
Yellow reflective heat-insulation paint proportioning following (total amount meets 100%)
Weigh each composition material by said ratio, first above-mentioned paint filler with low absorptivity and high emissivity, vinylformic acid, water, commercially available " German Bi Ke BYK-3521 " multifunctional assistant are mixed, stir as uniform coating; By commercially available " floridity spy " mill base and water mixed dissolution, then mix with coating, stir, can prepare this colour reflective thermal insulating coating.
This coating is coated on the aluminium sheet of 300mm × 300mm × 1mm and tans by the sun sample 1, use shown in Fig. 1 and tan by the sun in the daytime experimental installation, carry out outdoor 48h experiment.When experiment, first will tan by the sun case and be placed in one night of environment, and make itself and environment reach thermal equilibrium and use, and choose afterwards under sunny calm or gentle breeze weather, connection line, opens thermopair 2 and multiple-path temperature measurement and carries out thermometric.
Experimental result shows, in the situation of being exposed to the sun on the same day, scribbling the sample 1 that tans by the sun of yellow reflective heat-insulation paint, to compare the maximum cooling value of sample that scribbles common commercially available blue paint be 4.6 DEG C, and the sample 1 that tans by the sun that scribbles blue reflective heat-insulation paint is compared the sample temperature difference whole day that scribbles commercially available white reflective heat-insulation paint and is no more than 0.2 DEG C.
Claims (3)
1. a colour reflective thermal insulating coating, is characterized in that: this material composition and proportioning are as follows:
Above percentage ratio is mass percent, and above total amount of material meets 100%;
Mill base is that commercially available floridity spy, labor is pacified the one in D series, product mill base difficult to understand;
Multifunctional assistant is commercially available German Bi Ke BYK-3521.
2. a kind of colour reflective thermal insulating coating according to claim 1, it is characterized in that: paint filler with low absorptivity and high emissivity is the paint filler with low absorptivity and high emissivity described in Chinese patent CN101671502, this filler is the mixture of alkaline earth metal carbonate, alkaline earth metal sulphate, alkaline earth metal silicate, alkali earth metal aluminate and alkaline-earth metal fluoaluminate; The mass percent of this paint filler with low absorptivity and high emissivity is composed as follows: alkaline earth metal carbonate 80%-95%, alkaline earth metal sulphate 0.1%-5%, alkaline earth metal silicate 0.1%-5%, alkali earth metal aluminate 0.1%-5%, alkaline-earth metal fluoaluminate 0.1%-5%, above total amount of material meets 100%.
3. the preparation method of a colour reflective thermal insulating coating claimed in claim 1, it is characterized in that: first measure paint filler with low absorptivity and high emissivity by mass percent: vinylformic acid: mill base: multifunctional assistant: water=30%-50%:15%-30%:0.005%-2%:0.05%-0.5%:30%-40%, then by paint filler with low absorptivity and high emissivity, vinylformic acid, multifunctional assistant and water mix, and stir and obtain coating; Finally add in coating after making the mill base aqueous solution soluble in water mill base, mix, make this colour reflective thermal insulating coating.
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| CN201310746098.0A CN103834202A (en) | 2013-12-30 | 2013-12-30 | Colorful reflective thermal-insulation coating and preparation method thereof |
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Cited By (1)
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