Preparation method of nanometer copper gadolinium sulfide powder and film containing nanometer copper gadolinium sulfide

A technology of nanometer copper gadolinium sulfide and nanometer powder is applied in the field of solar thermal insulation materials and achieves the effects of high yield, simple preparation equipment and high synthesis efficiency

Inactive Publication Date: 2014-10-22
NINGBO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Heat reflective glass is a metal or metal oxide film formed on the surface of the glass. Its high reflection of near-infrared sunlight achieves the purpose of heat insulation, but its high reflection of visible light is easy to cause light pollution.
Low-emissivity glass is to deposit a dielectric layer, a barrier layer and a nano-metal layer on the surface of the glass, and achieve the effect of heat insulation through the mid-to-far infrared rays radiated by high-reflection indoor thermal objects. For example, the invention patent application with the publication number CN102092960 is a medium Layer-barrier layer-silver layer-transition layer-barrier layer-dielectric layer-glass; multilayer deposition expensive large-scale equipment, complex manufacturing process, high manufacturing cost
The invention patent with the publication number CN1745149A discloses that composite tungsten oxide nanopowder is used as the main material, and resin or glass is used as the medium to form a surface plasmon resonance absorption effect to realize the absorption of near-infrared light and achieve the absorption of sunlight. Shielding effect, but the absorption effect is greatly affected by the shape, size and surrounding medium of the nanostructure. This invention obtains tungsten oxide by hydrolyzing and dissolving tungsten chloride in alcohol. The particle size distribution is uneven, resulting in large differences in product performance

Method used

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  • Preparation method of nanometer copper gadolinium sulfide powder and film containing nanometer copper gadolinium sulfide
  • Preparation method of nanometer copper gadolinium sulfide powder and film containing nanometer copper gadolinium sulfide
  • Preparation method of nanometer copper gadolinium sulfide powder and film containing nanometer copper gadolinium sulfide

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Dissolve copper nitrate in deionized water to form a concentration (0.05-0.30) of 0.10 mol / L copper nitrate solution, similarly prepare gadolinium nitrate to form a concentration of 0.10 mol / L gadolinium nitrate solution, and sodium sulfide to form a concentration of 0.10 mol / L sodium sulfide solution, use dilute hydrochloric acid or ammonia water to adjust the pH value of copper nitrate solution, gadolinium nitrate solution and sodium sulfide solution to 6-8 for use; put 2 liters of copper nitrate solution and 2 liters of gadolinium nitrate solution into the spray of ultrasonic atomization device Obtain copper nitrate / gadolinium nitrate mixed solution in the container, 4 liters of sodium sulfide solutions are packed in the reaction barrel of ultrasonic atomization device, the surface area of ​​sodium sulfide solution in the reaction barrel is 30 square centimeters (can be 18 square centimeters, 50 square centimeters etc.), at an ultrasonic power of 20W, a frequency of 5...

Embodiment 2

[0024]It is basically the same as Example 1, except that the concentrations of copper nitrate solution, gadolinium nitrate solution and sodium sulfide solution are all 0.05 mol / liter, gadolinium nitrate solution is 4 liters, sodium sulfide solution is 6 liters, and the liquid flow rate in the ultrasonic spray head 300 ml / hour, the stirring speed is 90 rev / min, let it stand and age for 24 hours, put the cleaned solid material into an oven, and dry it for 3 hours at a drying temperature of 200°C, and add 5 milliliters of Water alcohol, wet grinding with ceramic balls for 1h, drying at 80°C for 8 hours, dry grinding with Φ25mm zirconia balls for 0.5h, the mass ratio of nano-copper gadolinium sulfide powder to hexadecylmethyl ammonium bromide is 1 : The ratio of 1.5, the ratio of the mass ratio of nano-copper gadolinium sulfide powder to polyvinyl alcohol is 1:8.

Embodiment 3

[0026] It is basically the same as Example 1, except that the concentration of copper nitrate solution, gadolinium nitrate solution and sodium sulfide solution is 0.3 mol / liter, gadolinium nitrate solution is 3 liters, sodium sulfide solution is 5 liters, and the liquid flow rate in the ultrasonic spray head 50 ml / hour, the stirring rate is 30 rev / min, standing and aging for 5 hours, the cleaned solid material is put into an oven, and dried at a drying temperature of 60°C for 6 hours, and 40 ml of no Water alcohol, wet grinding with ceramic balls for 4 hours, drying at 200°C for 4 hours, dry grinding with Φ25mm zirconia balls for 6 hours, the mass ratio of nano-copper gadolinium sulfide powder to hexadecylmethylammonium bromide is 1: The ratio of 3, the mass ratio of nano-copper gadolinium sulfide powder to polyvinyl alcohol is 1:15; under the dipping method with a pulling speed of 1-5 mm / s, the nano-copper gadolinium sulfide viscous liquid is evenly coated On the glass, the n...

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Abstract

The invention discloses nano copper-gadolinium sulfide powder, a film containing nano copper-gadolinium sulfide and a preparation method of the film. The nano powder is of a cubic spinel structure, namely CuGd2S4. The powder is prepared by an ultrasonic atomization method. A copper sulfide and gadolinium sulfide mixed solution and a sodium sulfide solution are subjected to contact reaction so as to produce CuGd2S4; and the powder is subjected to powder treatment, such as wet grinding and dry grinding, is then dispersed into a cetyl methyl ammonium bromide solution and is then mixed with polyvinyl alcohol viscous liquid, so as to obtain viscous liquid, and the viscous liquid is coated on the surface of a clean glass and dacron substrate by using a dipping method, so as to prepare supported and unsupported thick films. According to the ultrasonic atomization method, copper and gadolinium fully react with sulfur, the reaction speed is high, the yield is high, and the granularity is uniform. The obtained film containing CuGd2S4 nanoparticles has strong near-infrared sunlight absorption capacity. Thus, the powder and the film have the advantages of simple process, low cost, convenience in operation and high synthesis efficiency and can be expected to be applied to near-infrared absorption materials for solar heat shielding.

Description

technical field [0001] The invention relates to a solar heat insulation material, in particular to a preparation method of nanometer copper gadolinium sulfide powder and a thin film containing nanometer copper gadolinium sulfide. Background technique [0002] Solar heat insulation materials mainly include heat reflective glass and low-emissivity glass, which can effectively isolate near-infrared light and have high visible light transmission performance. Heat reflective glass is a metal or metal oxide film formed on the surface of the glass. Its high reflection of near-infrared sunlight achieves the purpose of heat insulation, but its high reflection of visible light is easy to cause light pollution. Low-emissivity glass is to deposit a dielectric layer, a barrier layer and a nano-metal layer on the surface of the glass, and achieve the effect of heat insulation through the mid-to-far infrared rays radiated by high-reflection indoor thermal objects. For example, the inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/00C03C17/22B82Y30/00
Inventor 夏海平徐磊王冬杰张约品
Owner NINGBO UNIV
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