CN101418155A - Sun screen and heat insulation nano composite material for reflecting infrared and preparation method thereof - Google Patents
Sun screen and heat insulation nano composite material for reflecting infrared and preparation method thereof Download PDFInfo
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- CN101418155A CN101418155A CNA2008102196980A CN200810219698A CN101418155A CN 101418155 A CN101418155 A CN 101418155A CN A2008102196980 A CNA2008102196980 A CN A2008102196980A CN 200810219698 A CN200810219698 A CN 200810219698A CN 101418155 A CN101418155 A CN 101418155A
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Abstract
The invention discloses a sun-proof and heat-insulated nano composite material for reflecting infrared rays and a preparation method thereof. The sun-proof and heat-insulated nano composite material for reflecting the infrared rays consists of nano silicon dioxide and nano titania, wherein the weight ratio of the nano silicon dioxide to the nano titania is between 0.8 to 1 and 3 to 1. The nano composite material prepared has high reflectivity on the infrared rays (sunlight), has sun-proof and heat-insulated effects on the sunlight, can be used for preparing a reflective heat-insulated coating, can be applied to a heat-insulated coating of an external wall, and achieves the energy saving effect of building materials.
Description
Technical field
The invention belongs to the application of nano composite material in energy field, particularly relate to the application of nano composite material aspect save energy.
Background technology
Thermal insulating coating is a kind of coating that is applied over building surface, and it can effectively reduce building surface and temperature inside.In recent years, along with the popularization of building energy conservation, thermal insulating coating more and more is subjected to people's attention because of advantages such as economic, convenient and good heat-insulation effect.Thermal insulating coating is divided into isolation-type thermal insulating coating, reflection type thermal insulation coating and radiation type heat-insulation coating three classes according to the difference of heat insulation mechanism and heat insulation mode.The heat-insulating efficiency of reflection type thermal insulation coating is determined that by reflected sunlight (mainly being the near infrared ray with heat effect) therefore, the functional materials that development, production have high-reflectivity is the key that realizes the reflective thermal insulating coating of superperformance.
Summary of the invention
The objective of the invention is to overcome the deficiency that existing reflection type thermal insulation coating exists, a kind of sun screen and heat insulation nano composite material for reflecting infrared that near infrared light (sunlight) is had high-reflectivity is provided.
To achieve these goals, the present invention adopts following technical scheme:
A kind of sun screen and heat insulation nano composite material for reflecting infrared is made up of nano silicon and nano titanium oxide, and its weight ratio is 0.8:1～3:1.
The preparation method of above-mentioned sun-proof heat insulation nano composite material comprises the steps:
(1) the pH value scope of the adjusting nano silicon water-sol is 4～5.5;
(2) be that to be dispersed in mass concentration be in 6%～15% the nano silicon hydro-colloid for 3%～10% nanometer titanium tetrachloride solution with mass concentration; The volume ratio of nanometer titanium tetrachloride solution and nano silicon hydro-colloid is 0.8～1:1.8～2.5;
(3) the adding mass concentration is 1%～3% aqueous solution of urea, and control reaction temperature is 9～11 ℃, carries out original position and coats hydrolysis reaction, filters; The amount of aqueous solution of urea need not limit especially, and in right amount just, its effect is a deposition.
(4) microwave heating obtains sun screen and heat insulation nano composite material for reflecting infrared.
Compared with prior art, the present invention adopts following beneficial effect: the nano composite material that the present invention makes has high-reflectivity near infrared light (sunlight), sunlight had the heat insulation sun effect, can be used to prepare reflection type thermal insulation coating, can be applicable to outer wall heat-insulating coating, reach the energy-conservation effect of building materials.
Embodiment
The preparation method of sun-proof heat insulation nano composite material: with magnetic stirring apparatus and ultrasonic disperser nano silicon being dispersed in the water, being made into mass concentration and being 10% nano silicon hydro-colloid, is 5 with the vinegar acid for adjusting pH value; In water-bath, obtain mass concentration and be 6% nanometer titanium tetrachloride aqueous solution, and this nanometer titanium tetrachloride solution is joined (volume ratio of the nanometer titanium tetrachloride solution and the nano silicon water-sol is 1:2) in the nano silicon water-sol lentamente; Add a small amount of mass concentration and be 3% aqueous solution of urea, 10 ℃ of control reaction temperature are used slowly original position and are coated hydrolysis reaction and obtain gel precipitate, wash then, filter; For preventing the particulate secondary crystal and grow up that applied microwave adds quick heating, obtain the having nanometer silica-titania matrix material of (nuclear-coated).Use the near-infrared reflection performance that the near-infrared reflection instrument can record prepared matrix material, as shown in Figure 1, can find that prepared matrix material has the reflectivity up to 90% in wavelength 400-2500nm scope, can satisfy the requirement of reflection type thermal insulation coating fully.
Claims (3)
1. a sun screen and heat insulation nano composite material for reflecting infrared is characterized in that being made up of nano silicon and nano titanium oxide, and its weight ratio is 0.8:1～3:1.
2. the preparation method of the described sun-proof heat insulation nano composite material of claim 1 is characterized in that comprising the steps:
(1) the pH value scope of the adjusting nano silicon water-sol is 4～5.5;
(2) be that to be dispersed in mass concentration be in 6%～15% the nano silicon hydro-colloid for 3%～10% nanometer titanium tetrachloride solution with mass concentration; The volume ratio of nanometer titanium tetrachloride solution and nano silicon hydro-colloid is 0.8～1:1.8～2.5;
(3) the adding mass concentration is 1%～3% aqueous solution of urea, and control reaction temperature is 9～11 ℃, carries out original position and coats hydrolysis reaction, filters;
(4) microwave heating obtains sun screen and heat insulation nano composite material for reflecting infrared.
3. preparation method as claimed in claim 2, the volume ratio that it is characterized in that described nanometer titanium tetrachloride solution and nano silicon hydro-colloid is 1:2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102196980A CN101418155A (en) | 2008-12-05 | 2008-12-05 | Sun screen and heat insulation nano composite material for reflecting infrared and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102196980A CN101418155A (en) | 2008-12-05 | 2008-12-05 | Sun screen and heat insulation nano composite material for reflecting infrared and preparation method thereof |
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| Publication Number | Publication Date |
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| CN101418155A true CN101418155A (en) | 2009-04-29 |
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| CNA2008102196980A Pending CN101418155A (en) | 2008-12-05 | 2008-12-05 | Sun screen and heat insulation nano composite material for reflecting infrared and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885937B (en) * | 2009-05-15 | 2012-10-17 | 深圳市华光业宝涂料制品有限公司 | Colored and transparent heat-insulating energy-saving protecting function coating and preparation method thereof |
| CN102964886A (en) * | 2012-11-29 | 2013-03-13 | 安徽海太科新能源科技有限公司 | Formula and preparation method of high-selectivity solar energy heat absorption nanometer film |
| CN104059465A (en) * | 2014-06-03 | 2014-09-24 | 安徽奥邦新材料有限公司 | Heat-insulation powder and preparation method thereof |
| CN105837225A (en) * | 2015-01-13 | 2016-08-10 | 北京仿真中心 | Infrared/radio-frequency radiation frequency selecting device based on silicon composite material and method |
| CN108624169A (en) * | 2018-05-23 | 2018-10-09 | *** | Anti- infrared heat-insulated water paint nanometer titanium dioxide composite material and preparation process |
| CN109852171A (en) * | 2018-12-19 | 2019-06-07 | 宁波瑞凌新能源科技有限公司 | A kind of radiation cooling coating |
-
2008
- 2008-12-05 CN CNA2008102196980A patent/CN101418155A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885937B (en) * | 2009-05-15 | 2012-10-17 | 深圳市华光业宝涂料制品有限公司 | Colored and transparent heat-insulating energy-saving protecting function coating and preparation method thereof |
| CN102964886A (en) * | 2012-11-29 | 2013-03-13 | 安徽海太科新能源科技有限公司 | Formula and preparation method of high-selectivity solar energy heat absorption nanometer film |
| CN102964886B (en) * | 2012-11-29 | 2014-11-05 | 安徽海太科新能源科技有限公司 | Formula and preparation method of high-selectivity solar energy heat absorption nanometer film |
| CN104059465A (en) * | 2014-06-03 | 2014-09-24 | 安徽奥邦新材料有限公司 | Heat-insulation powder and preparation method thereof |
| CN105837225A (en) * | 2015-01-13 | 2016-08-10 | 北京仿真中心 | Infrared/radio-frequency radiation frequency selecting device based on silicon composite material and method |
| CN108624169A (en) * | 2018-05-23 | 2018-10-09 | *** | Anti- infrared heat-insulated water paint nanometer titanium dioxide composite material and preparation process |
| CN109852171A (en) * | 2018-12-19 | 2019-06-07 | 宁波瑞凌新能源科技有限公司 | A kind of radiation cooling coating |
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Open date: 20090429 |