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Heat-reflecting heat-insulation inorganic composite material as well preparation method and application thereof

An inorganic composite material and heat reflection technology, which is applied in the direction of reflection/signal coatings, radiation-absorbing coatings, textiles, and papermaking, can solve problems such as unstable chemical properties, complicated preparation processes, and large environmental pollution, and achieve heat reflection insulation. Stable thermal performance, simple and easy preparation process, and stable chemical properties

Inactive Publication Date: 2012-07-18
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned materials all have certain defects of toxicity, unstable chemical properties, difficulty in long-term storage, heat reflection and heat insulation performance changing with time and environmental changes, and there are also defects such as complicated preparation process, high cost, large environmental pollution and bad Suitable for defects such as industrial production

Method used

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  • Heat-reflecting heat-insulation inorganic composite material as well preparation method and application thereof
  • Heat-reflecting heat-insulation inorganic composite material as well preparation method and application thereof
  • Heat-reflecting heat-insulation inorganic composite material as well preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The preparation method of the heat-reflecting heat-insulating inorganic material given in this embodiment, the specific steps are as follows:

[0051] a) Weigh 4.2202g (11.25mmol) aluminum nitrate (Al(NO 3 ) 3 9H 2 O) and 0.5428g (1.25mmol) cerium nitrate (Ce(NO 3 ) 3 ·6H 2 O), the inorganic salt of aluminum (Al(NO 3 ) 3 9H 2 O) and inorganic salts of doping elements (Ce(NO 3 ) 3 ·6H 2 O) the mol ratio is 9: 1;

[0052] b) Add 100mL double distilled water to make the concentration of the mixed salt solution 0.125mol / L;

[0053] c) stirring at room temperature for 1 hour to obtain a colorless and transparent solution;

[0054] d) adding dropwise an aqueous sodium hydroxide solution with a concentration of 1 mol / L to the solution while stirring to adjust the pH=7 to 8;

[0055] e) Stirring was continued for 5 hours at room temperature to obtain a milky white emulsion;

[0056] f) filtering and washing, and drying the obtained milky white filter cake at 100° ...

Embodiment 2

[0065] The preparation method of this embodiment is the same as that described in Example 1, except that 4.4546g (11.875mmol) of aluminum nitrate (Al(NO 3 ) 3 9H 2 O) and 0.2714g (0.625mmol) cerium nitrate (Ce(NO 3 ) 3 ·6H 2 O), the inorganic salt of aluminum (Al(NO 3 ) 3 9H 2 O) and inorganic salts of doping elements (Ce(NO 3 ) 3 ·6H 2 O) in a molar ratio of 19:1.

[0066] The ultraviolet-visible-near-infrared reflection spectrum, heat insulation effect diagram, and scanning electron microscope photo analysis results of the heat-reflecting and heat-insulating inorganic material prepared in this example are all the same as those described in Example 1.

Embodiment 3

[0068] The preparation method of this embodiment is the same as that described in Example 1, except that in step a), 3.7513g (10mmol) of aluminum nitrate (A1(NO 3 ) 3 .9H 2 O) and 1.0855g (2.5mmol) cerium nitrate (Ce(NO 3 ) 3 ·6H 2 O), the inorganic salt of aluminum (Al(NO 3 ) 3 9H 2 O) and inorganic salts of doping elements (Ce(NO 3 ) 3 ·6H 2 O) in a molar ratio of 4:1.

[0069] The ultraviolet-visible-near-infrared reflection spectrum, heat insulation effect diagram, and scanning electron microscope photo analysis results of the heat-reflecting and heat-insulating inorganic material prepared in this example are all the same as those described in Example 1.

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Abstract

The invention discloses a heat-reflecting heat-insulation inorganic composite material as well a preparation method and an application thereof. The heat-reflecting heat-insulation inorganic composite material is a micron / nano composite material which takes alumina, titanium oxide and silicon oxide as substrates and is doped with one or a plurality of rare-earth elements such as yttrium, cerium and lanthanum. The inorganic composite material prepared by using a liquid phase method, a liquid phase coating method and a solid phase mixing method can be used for preparing a heat-reflecting thermal-insulation heat-insulation coating. The heat-reflecting heat-insulation inorganic composite material has the beneficial effects that 1) the reflectivity of the heat-reflecting heat-insulation inorganic composite material on a heat ray can be above 90%, the thermal radiation of sun and thermal radiation of other thermal radiation sources can be effectively prevented, ultraviolet ray can be absorbed, and the heat-reflecting heat-insulation inorganic composite material has an ultraviolet ray harm resistant function; 2) the heat-reflecting heat-insulation inorganic composite material is an inorganic solid material which does not contain an organic solvent and has the beneficial effects that is the material is safe and non-toxic, has stable chemical property and stable heat reflecting thermal insulation performance, is easy to store for a long term, and the like; and 3) the preparation technology is simple and easy to operate, the raw material is easy to obtain and cheap, the reaction process is almost free from industrial three wastes, thus the preparation technology has the characteristics of green production and environment-friendly application and is suitable for industrial production.

Description

technical field [0001] The invention relates to a preparation method and application of a heat-reflective rare earth-inorganic oxide composite micro / nano material and a thermal insulation coating, in particular to a coating capable of shielding solar heat radiation and similar heat radiation, and having the ability to absorb ultraviolet rays and heat insulation. Thermally functional inorganic composite thermal insulation coatings have a reflectivity of more than 90% in the main radiation wavelength range of sunlight. On this basis, the corresponding preparation methods have been studied and related application technologies have been developed. Background technique [0002] The radiation energy of solar radiation reaching the earth's surface after passing through the atmosphere energy loss is 335~837kJ / cm 2 *a, is the ultimate source of human energy. Classified according to the wavelength of light, ultraviolet rays account for 5%, visible rays account for 45%, and infrared r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/33C09D5/32D06M11/45D06M11/46D06M11/79C03C17/23
Inventor 余锡宾邹兴韩丽仙刘翃
Owner SHANGHAI NORMAL UNIVERSITY
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