CN102108230B - Thermal-insulation coating and preparation method thereof - Google Patents
Thermal-insulation coating and preparation method thereof Download PDFInfo
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- CN102108230B CN102108230B CN 201110046807 CN201110046807A CN102108230B CN 102108230 B CN102108230 B CN 102108230B CN 201110046807 CN201110046807 CN 201110046807 CN 201110046807 A CN201110046807 A CN 201110046807A CN 102108230 B CN102108230 B CN 102108230B
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Abstract
The invention relates to thermal-insulation coating and a preparation method thereof. The thermal-insulation coating comprises the following components in percentage by weight: 10 to 15 percent of antimony tin oxide (ATO) powder and 2 to 5 percent of small molecular weight amine. The coating has high transparent and thermal-insulation effect, stable performance and a wide application range.
Description
Technical field
The present invention relates to a kind of lagging material, particularly a kind of thermal insulating coating and preparation method thereof.
Background technology
Along with social development and progress, the energy and environmental issue obtain people's concern day by day.And the heat-insulation and heat-preservation of buildings uses an importance of function as save energy, raising buildings, also obtains day by day attracting attention of the whole society.To the energy-efficient treatment of buildings, except doing heat insulation processing on exterior wall and roof, be also an important step to the heat insulation processing of the glass door and window of buildings.
At present, adopt nano ATO as glass heat-insulating coating, glass door and window to be carried out being widely used every heat-treating methods.This method has easy to operate, is widely used, and nondiscoloration, the advantage such as with low cost, and day by day become the first-selected measure that reduces building energy consumption.
Yet because the surface of nano ATO powder can be very large, the electrostatic attraction effect of the strong polar surface between particle is very strong, so particle aggregation very easily occurs, makes its unstable properties, has reduced the printing opacity effect of heat insulation, has limited range of application.
Summary of the invention
In order to solve the technical problem of the unstable properties that the prior art glass heat-insulating coating exists, the invention provides that a kind of printing opacity effect of heat insulation is good, stable performance, the thermal insulating coating that has wide range of applications and preparation method thereof.
The invention provides a kind of thermal insulating coating, it comprises by weight percentage: the ATO powder of 10%-15% and the small molecules amine of 2%-5%.
Preferably, described thermal insulating coating also comprises the tensio-active agent of 0.6%-1% by weight percentage.Described tensio-active agent is Sodium dodecylbenzene sulfonate (SDBS) or hexadecyl trimethyl ammonium bromide (CTAB).
Preferably, described thermal insulating coating also comprises the neutral solvent of 30%-40% by weight percentage.Described neutral solvent is one or more in water, pure and mild ketone.Alcohol in described neutral solvent is ethanol or ethylene glycol, and the ketone in described neutral solvent is acetone.
Preferably, described thermal insulating coating also comprises the membrane-forming agent of 40%-55% by weight percentage.Described membrane-forming agent is one or more in polyvinyl alcohol (PVA), aqueous polyurethane (PU), polyvinyl butyral acetal (PVB), Synolac (AK) or polyacrylic resin (PAA).
Preferably, described small molecules amine is trolamine.Perhaps, described small molecules amine is comprised of following raw material: trolamine, and diethanolamine, thanomin, quadrol, di-alcohol triamine, three ethanol tetramines, diethylamine, one or more in triethylamine.
Preferably, the median size of described ATO powder is less than 100nm.
The present invention also provides a kind of method for preparing thermal insulating coating, and it comprises the following steps: ATO powder and small molecules amine are provided; ATO powder and small molecules amine are mixed, make in the thermal insulating coating that obtains, by weight percentage, described ATO powder accounts for 10%-15%, and described small molecules amine accounts for 2%-5%.
The described method for preparing thermal insulating coating, further comprising the steps of: neutral solvent and described ATO powder and small molecules amine are mixed making in the thermal insulating coating that obtains, by weight percentage, described neutral solvent accounts for 30%-40%.
The described method for preparing thermal insulating coating, further comprising the steps of: tensio-active agent and described neutral solvent, ATO powder and the mixing of small molecules amine are made in the thermal insulating coating that obtains, and by weight percentage, described tensio-active agent accounts for 2%-5%.
The described method for preparing thermal insulating coating, further comprising the steps of: that above-mentioned neutral solvent, ATO powder and the formed mixture of small molecules amine were carried out under hyperacoustic effect pre-dispersed 0.5-1.5 hour, and then add the tensio-active agent of 0.6%-1%, Ball milling is 6 to 24 hours under the rotating speed of 450-650rpm, obtains heat-insulating slurry.
The described method for preparing thermal insulating coating, further comprising the steps of: as membrane-forming agent to be added in described heat-insulating slurry, obtain thermal insulating coating thereby utilize ultrasonic wave to mix, in this thermal insulating coating that obtains, by weight percentage, described membrane-forming agent accounts for 40%-55%.
The described method for preparing thermal insulating coating, wherein, described ATO powder provides by following steps: with the stannic chloride pentahydrate of 0.1mol-0.2mol and the butter of antimony of 0.005mol-0.033mol, be dissolved in the solution of 50mL ethanol and 50mL methanol mixed, and add a small amount of dilute hydrochloric acid inhibition hydrolysis, obtain settled solution by magnetic agitation after 2 hours; And then add the ammoniacal liquor of 0.1mol/L under magnetic agitation, centrifugation gained precipitation, then at the air drying of 50-80 degree centigrade, 450-650 degree centigrade of sintering, obtain the ATO powder in air.
Compared with prior art, the functional groups such as amido in thermal insulating coating small molecular amine of the present invention can with the ATO powder in the tin atom coordination form " surface complex ", the existence of this surface complex can weaken the electrostatic attraction effect of the strong polar surface of ATO powder particle greatly, stops the reunion of ATO powder; In addition, the strong surface adsorption of the functional groups such as amido greatly reduces the surface Gibbs free energy of ATO powder particle, also can reduce the reunion degree of ATO powder particle.In addition, further add tensio-active agent, for example add Sodium dodecylbenzene sulfonate or cetyl trimethylammonium bromide, can form micellar solution and produce sterically hinderedly, prevented between the ATO particle gathering and the precipitation that cause because of the Brown motion.
Description of drawings
Fig. 1 is the average particle size distribution plan in the embodiment of the present invention;
Fig. 2 is the wavelength-transmissivity figure of ATO thermal insulating coating of the present invention.
Embodiment
The invention will be further elaborated below in conjunction with specific embodiments and the drawings:
Embodiment 1
A kind of thermal insulating coating, by weight percentage, it comprises: the ATO of 10%-15% (the Sb SnO that adulterates
2) powder, the small molecules amine of 2%-5%, the neutral solvent of 30%-40%, the tensio-active agent of 0.6%-1% and the membrane-forming agent of 40%-55%.Described small molecules amine is the organic amine of short carbon chain, and generally short carbon chain refers to that main carbochain is the following carbochain of 5-6 carbon.
Described ATO powder can be the particle of nano level or micro/nano level, and in the present embodiment, the median size of this ATO powder particle is less than 100nm.
Small molecules amine in described thermal insulating coating can use separately trolamine; Also can use the mixture of trolamine and other amines.Other amines comprise diethanolamine, thanomin, quadrol, di-alcohol triamine, three ethanol tetramines, diethylamine, triethylamine.Small molecules amine in described thermal insulating coating is one or more the mixture in trolamine and above-mentioned other amine.
Described tensio-active agent is Sodium dodecylbenzene sulfonate (SDBS) or hexadecyl trimethyl ammonium bromide (CTAB).In addition, in above-mentioned thermal insulating coating, the purpose that tensio-active agent adds is in order to promote the ATO dispersion of particles.
Described neutral solvent is water, alcohol or ketone, is perhaps two or more the mixture in water, alcohol, ketone three, and wherein, the alcohol in described neutral solvent can be selected ethanol or ethylene glycol, and the ketone in described neutral solvent can be selected acetone.
Described membrane-forming agent adopts polymer film-forming agent, for example one or more in polyvinyl alcohol (PVA), aqueous polyurethane (PU), polyvinyl butyral acetal (PVB), Synolac (AK) or polyacrylic resin (PAA).
Embodiment 2
A kind of preparation method of thermal insulating coating comprises the steps:
The preparation of I, ATO powder, butter of antimony with 0.1mol-0.2mol stannic chloride pentahydrate and 0.005mol-0.033mol, be dissolved in the solution of 50mL ethanol and 50mL methanol mixed, and add a small amount of dilute hydrochloric acid inhibition hydrolysis, obtain settled solution by magnetic agitation after 2 hours; And then add the ammonia precipitation process of appropriate 0.1mol/L under magnetic agitation, centrifugation gained precipitation, then at the air drying of 50-80 degree centigrade, and in air 450-650 degree centigrade of sintering, obtain the ATO powder.As a kind of preferred mode, the butter of antimony of 0.1mol stannic chloride pentahydrate and 0.03mol can be dissolved in the mixing solutions of 50mL ethanol and 50mL methyl alcohol, then carry out follow-up same steps as.
II, get the ATO powder that appropriate aforesaid method makes, appropriate neutral solvent, appropriate small molecules amine and mix, first carried out under hyperacoustic effect pre-dispersed 0.5-1.5 hour; Then add proper amount of surfactant in above-mentioned solution after pre-dispersed, above-mentioned ATO powder, neutral solvent, small molecules amine and tensio-active agent, by weight percentage, in thermal insulating coating to be prepared, account for respectively 10%-15%, 30%-40%, 2%-5% and 0.6%-1%.Said mixture is under the rotating speed of 450-650rpm, and Ball milling 6 to 24 hours namely obtains the ATO heat-insulating slurry.As a kind of preferred mode, as shown in Figure 1, the weight that accounts for the ATO heat-insulating slurry can be counted 11% ATO powder, 34% neutral solvent, 3.5% small molecules amine mixing with per-cent, and then add the weight that accounts for the ATO heat-insulating slurry to count 0.8% Sodium dodecylbenzene sulfonate with per-cent in solution, then carry out follow-up same steps as.
The preparation of III, transparent heat insulating dope, the weight that accounts for transparent heat insulating dope is counted the membrane-forming agent of 40%-55% with per-cent, joining the weight that accounts for transparent heat insulating dope counts in the ATO heat-insulating slurry of 45%-60% with per-cent, mix under hyperacoustic effect, namely obtain transparent heat insulating dope.The prepared ATO thermal insulating coating of the present invention has transmission effects preferably to visible light, and to the infrared light of wavelength greater than 1250nm, the rate that stops of described ATO thermal insulating coating surpasses 50%, as Fig. 2.
Transparent heat insulating dope of the present invention and preparation method thereof compared to prior art, has following technique effect:
The present invention adopts the small molecules amines such as trolamine as auxiliary dispersants, the functional groups such as amido wherein or carboxyl, can with ATO in the tin atom coordination form " surface complex ", this surface complex is coated on particle surface following effect: 1) strong surface adsorption passivation the surface, reduced SnO
2The electrostatic interaction of the strong polar surface on surface; 2) the strong surface adsorption of the functional group such as amido greatly reduces the surface Gibbs free energy of nanoparticle, has reduced the reunion of particle.In addition, be to form micellar solution and produce sterically hinderedly as the function of the Sodium dodecylbenzene sulfonate of tensio-active agent or cetyl trimethylammonium bromide, prevented the gathering and the precipitation that cause because of the Brown motion between the ATO particle.
To sum up, the present invention uses jointly by trolamine and Sodium dodecylbenzene sulfonate or hexadecyl trimethyl ammonium bromide, and the size distribution that can obtain is narrower, the standing ATO heat-insulating slurry that has good stability.The transparent heat insulating dope of favorable dispersity, the heat-insulating properties of coating is also better in addition, can be widely used in glass of building, and the printing opacity of vehicle glass is heat insulation.
Claims (8)
1. thermal insulating coating, it is characterized in that: by weight percentage, comprise: the ATO powder of 10%-15%, the small molecules amine of 2%-5%, the tensio-active agent of 0.6%-1%, 30% ~ 40% neutral solvent and 40% ~ 55% membrane-forming agent, wherein, described small molecules amine is that main carbochain is the organic amine of the following carbochain of 6 carbon, described tensio-active agent is Sodium dodecylbenzene sulfonate or hexadecyl trimethyl ammonium bromide, described neutral solvent is water, one or more in pure and mild ketone, described membrane-forming agent is polyvinyl alcohol, aqueous polyurethane, polyvinyl butyral acetal, one or more in Synolac or polyacrylic resin, the median size of the particle of described ATO powder is less than 100nm.
2. thermal insulating coating as claimed in claim 1, is characterized in that, the alcohol in described neutral solvent is ethanol or ethylene glycol, and the ketone in described neutral solvent is acetone.
3. thermal insulating coating as claimed in claim 1, is characterized in that, described small molecules amine is trolamine.
4. thermal insulating coating according to claim 1, is characterized in that, described small molecules amine is comprised of following raw material: trolamine, and diethanolamine, thanomin, quadrol, di-alcohol triamine, three ethanol tetramines, diethylamine, one or more in triethylamine.
5. a method for preparing thermal insulating coating, is characterized in that, comprises the steps:
The preparation of I, ATO powder: with the butter of antimony of 0.1mol-0.2mol stannic chloride pentahydrate and 0.005mol-0.033mol, be dissolved in the solution of 50mL ethanol and 50mL methanol mixed, and add a small amount of dilute hydrochloric acid and suppress hydrolysis, obtain settled solution by magnetic agitation after 2 hours, and then add the ammonia precipitation process of appropriate 0.1mol/L under magnetic agitation, centrifugation gained precipitation, again at the air drying of 50-80 degree centigrade, and in air 450-650 degree centigrade of sintering, obtain the ATO powder, the median size of the particle of wherein said ATO powder is less than 100nm;
II, the preparation of ATO heat-insulating slurry: get the ATO powder that aforesaid method makes, neutral solvent, the small molecules amine mixes, first carried out under hyperacoustic effect pre-dispersed 0.5-1.5 hour, then add proper amount of surfactant in above-mentioned solution after pre-dispersed, ATO powder wherein, neutral solvent, small molecules amine and tensio-active agent, by weight percentage, in thermal insulating coating to be prepared, account for respectively 10%-15%, 30%-40%, 2%-5% and 0.6%-1%, with said mixture under the rotating speed of 450-650rpm, Ball milling 6 to 24 hours, namely obtain the ATO heat-insulating slurry, wherein, described small molecules amine is that main carbochain is the organic amine of the following carbochain of 6 carbon, described tensio-active agent is Sodium dodecylbenzene sulfonate or hexadecyl trimethyl ammonium bromide, described neutral solvent is water, one or more in pure and mild ketone,
The preparation of III, transparent heat insulating dope, the weight that accounts for transparent heat insulating dope is counted the membrane-forming agent of 40%-55% with per-cent, joining the weight that accounts for transparent heat insulating dope counts in the ATO heat-insulating slurry of 45%-60% with per-cent, mix under hyperacoustic effect, namely obtain transparent heat insulating dope, wherein said membrane-forming agent is one or more in polyvinyl alcohol, aqueous polyurethane, polyvinyl butyral acetal, Synolac or polyacrylic resin.
6. the method for preparing thermal insulating coating according to claim 5, is characterized in that, the alcohol in described neutral solvent is ethanol or ethylene glycol, and the ketone in described neutral solvent is acetone.
7. the method for preparing thermal insulating coating according to claim 5, is characterized in that, described small molecules amine is trolamine.
8. the method for preparing thermal insulating coating according to claim 5, is characterized in that, described small molecules amine is comprised of following raw material: trolamine, and diethanolamine, thanomin, quadrol, di-alcohol triamine, three ethanol tetramines, diethylamine, one or more in triethylamine.
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| CN103351743A (en) * | 2013-06-19 | 2013-10-16 | 天长市驰程电子科技有限公司 | Thermal-conductive and heat-dissipation coating and preparation method thereof |
| CN104556727B (en) * | 2014-12-23 | 2017-08-11 | 江西科技学院 | A kind of vehicle glass insulating moulding coating manufacture method |
| CN109123782A (en) * | 2018-09-27 | 2019-01-04 | 上海烟草集团有限责任公司 | A kind of sensitization discoloration cigarette filter and cigarette |
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| JP2003268164A (en) * | 2002-03-13 | 2003-09-25 | Unitika Ltd | Aqueous dispersion and laminated film |
| CN1446862A (en) * | 2003-01-13 | 2003-10-08 | 华东理工大学 | Aquosity pulp of tin dioxide with nano stibonium being adulterated to |
| US20060089442A1 (en) * | 2003-05-26 | 2006-04-27 | Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige Gmbh | Composition having a non-newtonian behavior |
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| CN101289281A (en) * | 2008-06-13 | 2008-10-22 | 长沙科星纳米工程技术有限公司 | Insulating mold coating for high-transparent glass |
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| JP2003268164A (en) * | 2002-03-13 | 2003-09-25 | Unitika Ltd | Aqueous dispersion and laminated film |
| CN1446862A (en) * | 2003-01-13 | 2003-10-08 | 华东理工大学 | Aquosity pulp of tin dioxide with nano stibonium being adulterated to |
| US20060089442A1 (en) * | 2003-05-26 | 2006-04-27 | Leibniz-Institut Fuer Neue Materialien Gemeinnuetzige Gmbh | Composition having a non-newtonian behavior |
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Non-Patent Citations (3)
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| JP特开2003268164A 2003.09.25 |
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