CN102108230A - Thermal-insulation coating and preparation method thereof - Google Patents
Thermal-insulation coating and preparation method thereof Download PDFInfo
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- CN102108230A CN102108230A CN 201110046807 CN201110046807A CN102108230A CN 102108230 A CN102108230 A CN 102108230A CN 201110046807 CN201110046807 CN 201110046807 CN 201110046807 A CN201110046807 A CN 201110046807A CN 102108230 A CN102108230 A CN 102108230A
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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 attention day by day.And the heat-insulation and heat-preservation of buildings also obtains attracting attention day by day of the whole society as an importance of save energy, raising buildings functions of use.To the energy-efficient treatment of buildings, except doing heat insulation processing, also be an important step to the heat insulation processing of the glass door and window of buildings on exterior wall and roof.
At present, adopt nano ATO glass door and window to be carried out having obtained using widely every heat-treating methods as glass heat-insulating coating.This method has easy to operate, is widely used, and nondiscoloration, advantage such as with low cost, and become the first-selected measure that reduces building energy consumption day by day.
Yet because the surface energy of nano ATO powder is very big, the electrostatic attraction effect of the strong polar surface between the particle is very strong, so particle aggregation very easily takes place, 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, the pure and mild ketone.Alcohol in the described neutral solvent is ethanol or ethylene glycol, and the ketone in the 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 the polyacrylic resin (PAA).
Preferably, described small molecules amine is a trolamine.Perhaps, described small molecules amine is made up of following raw material: trolamine, and diethanolamine, thanomin, quadrol, di-alcohol triamine, three ethanol tetramines, diethylamine, one or more in the 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 may further comprise the steps: ATO powder and small molecules amine are provided; ATO powder and small molecules amine are mixed, make that by weight percentage, described ATO powder accounts for 10%-15% in the thermal insulating coating that obtains, described small molecules amine accounts for 2%-5%.
The described method for preparing thermal insulating coating, further comprising the steps of: as neutral solvent and described ATO powder and small molecules amine to be mixed making that by weight percentage, described neutral solvent accounts for 30%-40% in the thermal insulating coating that obtains.
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, by weight percentage, described surfactant comprise 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 action of ultrasonic waves pre-dispersed 0.5-1.5 hour, and then the tensio-active agent of adding 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 the 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 under magnetic agitation, add the ammoniacal liquor of 0.1mol/L, and centrifugation gained precipitation, at 50-80 degree centigrade air drying, 450-650 degree centigrade of sintering obtains the ATO powder in air again.
Compared with prior art, functional groups such as amido in the thermal insulating coating of the present invention in the small molecule amine class can form " surface complex " with the tin atom coordination in the ATO powder, 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 functional groups such as amido greatly reduces the surperficial 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 invention;
Fig. 2 is the wavelength-transmissivity figure of ATO thermal insulating coating of the present invention.
Embodiment
The invention will be further elaborated and explanation 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% (Sb doping SnO
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 is meant 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 the described thermal insulating coating can use trolamine separately; 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 the 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 the 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, perhaps is two or more the mixture among water, alcohol, the ketone three, and wherein, the alcohol in the described neutral solvent can be selected ethanol or ethylene glycol for use, and the ketone in the described neutral solvent can be selected acetone for use.
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 the polyacrylic resin (PAA).
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 after 2 hours by magnetic agitation; And then under magnetic agitation, add the ammonia precipitation process of an amount of 0.1mol/L, centrifugation gained precipitation, again at 50-80 degree centigrade air drying, 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, carry out follow-up same steps as then.
II, get the ATO powder that an amount of aforesaid method makes, an amount of neutral solvent, an amount of small molecules amine and mix, under action of ultrasonic waves, carried out pre-dispersed 0.5-1.5 hour earlier; In above-mentioned solution after pre-dispersed, add proper amount of surfactant then, 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 10%-15%, 30%-40%, 2%-5% and 0.6%-1% respectively.Said mixture is under the rotating speed of 450-650rpm, and Ball milling 6 to 24 hours promptly 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 in solution, add the weight account for the ATO heat-insulating slurry and count 0.8% Sodium dodecylbenzene sulfonate with per-cent, carry out follow-up same steps as then.
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, under action of ultrasonic waves, mix, promptly 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 insulating moulding coating of the present invention and preparation method thereof compared to prior art, has following technique effect:
The present invention adopts the small molecule amine classes such as triethanolamine as auxiliary separating powder, 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 adsorption passivation the surface, reduced SnO2The electrostatic interaction of the strong polarity face on surface; 2) the strong adsorption of the functional group such as amido greatly reduces the surperficial Gibbs free energy of nano particle, has reduced the reunion of particle. In addition, be to form micellar solution and produce sterically hinderedly as the function of the neopelex of surfactant or softex kw, 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 triethanolamine and neopelex or CTAB, and the particle diameter that can obtain distributes narrower, leaves standstill the good heat insulation slurry of ATO of stability. Dispersed good transparent insulating moulding coating, the heat insulation character of coating is also better in addition, can be widely used in building glass, and the printing opacity of vehicle glass is heat insulation.
Claims (24)
1. a thermal insulating coating is characterized in that: by weight percentage, comprising: the ATO powder of 10%-15% and the small molecules amine of 2%-5%.
2. thermal insulating coating according to claim 1 is characterized in that described thermal insulating coating also comprises the tensio-active agent of 0.6%-1% by weight percentage.
3. thermal insulating coating according to claim 1 is characterized in that described thermal insulating coating also comprises the neutral solvent of 30%-40% by weight percentage.
4. thermal insulating coating according to claim 1 is characterized in that described thermal insulating coating also comprises the membrane-forming agent of 40%-55% by weight percentage.
5. thermal insulating coating according to claim 1 is characterized in that, described small molecules amine is a trolamine.
6. thermal insulating coating according to claim 1 is characterized in that, described small molecules amine is made up of following raw material: trolamine, and diethanolamine, thanomin, quadrol, di-alcohol triamine, three ethanol tetramines, diethylamine, one or more in the triethylamine.
7. thermal insulating coating according to claim 2 is characterized in that, described tensio-active agent is an ionogenic surfactant.
8. thermal insulating coating according to claim 2 is characterized in that, described ionogenic surfactant is Sodium dodecylbenzene sulfonate (SDBS) or hexadecyl trimethyl ammonium bromide (CTAB).
9. thermal insulating coating according to claim 3 is characterized in that, described neutral solvent is one or more in water, the pure and mild ketone.
10. thermal insulating coating according to claim 8, the alcohol in the described neutral solvent are ethanol or ethylene glycol, and the ketone in the described neutral solvent is acetone.
11. thermal insulating coating according to claim 1 is characterized in that, the median size of described ATO powder is less than 100nm.
12. thermal insulating coating according to claim 4 is characterized in that, described membrane-forming agent is one or more in polyvinyl alcohol (PVA), aqueous polyurethane (PU), polyvinyl butyral acetal (PVB), Synolac (AK) or the polyacrylic resin (PAA).
13. thermal insulating coating according to claim 1 is characterized in that, described small molecules amine is the organic amine of short carbon chain.
14. a method for preparing thermal insulating coating is characterized in that, may further comprise the steps:
ATO powder and small molecules amine are provided;
ATO powder and small molecules amine are mixed, make that by weight percentage, described ATO powder accounts for 10%-15% in the thermal insulating coating that obtains, described small molecules amine accounts for 2%-5%.
15. the method for preparing thermal insulating coating according to claim 13 is characterized in that, and is further comprising the steps of:
Neutral solvent and described ATO powder and small molecules amine mixed make that by weight percentage, described neutral solvent accounts for 30%-40% in the thermal insulating coating that obtains.
16. the method for preparing thermal insulating coating according to claim 14 is characterized in that, and is 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, by weight percentage, described surfactant comprise 2%-5%.
17. the method for preparing thermal insulating coating according to claim 15, it is characterized in that, above-mentioned neutral solvent, ATO powder and the formed mixture of small molecules amine were carried out under action of ultrasonic waves pre-dispersed 0.5-1.5 hour, and then the tensio-active agent of adding 0.6%-1%, Ball milling is 6 to 24 hours under the rotating speed of 450-650rpm, obtains heat-insulating slurry.
18. the method for preparing thermal insulating coating according to claim 16 is characterized in that, and is further comprising the steps of:
Membrane-forming agent is added in the described heat-insulating slurry, obtain thermal insulating coating thereby utilize ultrasonic wave to mix, in this thermal insulating coating, by weight percentage, described membrane-forming agent accounts for 40%-55%.
19. the method for preparing thermal insulating coating according to claim 13 is characterized in that, described small molecules amine is a trolamine.
20. the method for preparing thermal insulating coating according to claim 13 is characterized in that, described small molecules amine is made up of following raw material: trolamine, and diethanolamine, thanomin, quadrol, di-alcohol triamine, three ethanol tetramines, diethylamine, one or more in the triethylamine.
21. the method for preparing thermal insulating coating according to claim 14 is characterized in that, described neutral solvent is one or more in water, the pure and mild ketone.
22. the method for preparing thermal insulating coating according to claim 15 is characterized in that, described tensio-active agent is Sodium dodecylbenzene sulfonate (SDBS) or hexadecyl trimethyl ammonium bromide (CTAB).
23. the method for preparing thermal insulating coating according to claim 17, it is characterized in that described membrane-forming agent is one or more in polyvinyl alcohol (PVA), aqueous polyurethane (PU), polyvinyl butyral acetal (PVB), Synolac (AK) or the polyacrylic resin (PAA).
24. the method for preparing thermal insulating coating according to claim 13, it is characterized in that, 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 under magnetic agitation, add the ammoniacal liquor of 0.1mol/L, and centrifugation gained precipitation, at 50-80 degree centigrade air drying, 450-650 degree centigrade of sintering in air obtains the ATO powder then again.
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Cited By (3)
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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 |
| CN104556727A (en) * | 2014-12-23 | 2015-04-29 | 江西科技学院 | Manufacturing method of vehicle glass thermal-insulation paint |
| 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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Cited By (3)
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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 |
| CN104556727A (en) * | 2014-12-23 | 2015-04-29 | 江西科技学院 | Manufacturing method of vehicle glass thermal-insulation paint |
| 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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| CN102108230B (en) | 2013-06-26 |
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