Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of radiative cooling double-layer nano-coating and preparation method thereof

A radiation refrigeration and nano-coating technology, applied in the field of spectrally selective nanoparticles, can solve the problems of not being suitable for large-scale industrial applications, difficult to control the preparation process, and poor refrigeration effect, and achieve maximum application value and refrigeration effect Good, low cost effect

Active Publication Date: 2017-08-11
SHANGHAI JIAOTONG UNIV
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned schemes, there are generally disadvantages such as the use of materials with single emission peaks or difficult control of the preparation process, poor refrigeration effect, complicated manufacturing process, high cost, and not suitable for large-scale industrial applications.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of radiative cooling double-layer nano-coating and preparation method thereof
  • A kind of radiative cooling double-layer nano-coating and preparation method thereof
  • A kind of radiative cooling double-layer nano-coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of emission nano-suspension: Dissolve 5 mL of SiC nanoparticles with a particle size of 50 nm in 15 mL of isopropanol solution, and stir for 20 minutes with a magnetic stirrer at a speed of 500 r / min at room temperature to form a uniform SiC Nanosuspension;

[0031] (2) Preparation of the emitting nanoparticle layer: pour the SiC nano-suspension into the Iwata spray gun W-77-G spray gun, and spray it on the upper surface of the aluminum foil. The bulk density can be controlled by controlling the number of sprays, spraying 10 times (about 10 μm ), placed in a cool place, until all the organic solvents are volatilized;

[0032] (3), 10mL of TiO with a particle size of 500nm 2 Nanoparticles were dissolved in 30mL isopropanol solution and stirred at room temperature with a magnetic stirrer at a speed of 500r / min for 20 minutes to form a uniform TiO 2 Nanosuspension;

[0033] (4), the TiO 2 Pour the nano-suspension into the Iwata spray gun W-77-G spray gu...

Embodiment 2

[0037] (1), the preparation of emitting nano-suspension is the same as Example 1;

[0038] (2) Pour the SiC nano-suspension into the Iwata spray gun W-77-G spray gun, and spray it on the upper surface of the aluminum foil. The bulk density can be controlled by controlling the number of sprays. Spray 20 times (about 20 μm), and put it in a cool place. Wait for the organic solvent to evaporate completely;

[0039] (3), 10mL of ZnS nanoparticles with a particle diameter of 500nm were dissolved in 30mL of isopropanol solution, and stirred for 20 minutes with a magnetic stirrer at a speed of 500r / min at room temperature to form a uniform ZnS nanosuspension;

[0040] (4) Pour the ZnS nano-suspension into the Iwata spray gun W-77-G spray gun, and spray it on the upper surface of the emitting nanoparticle layer. The bulk density can be controlled by controlling the number of sprays, spraying 40 times (about 40 μm);

[0041] (5) Place the prepared sample in a cool and ventilated place...

Embodiment 3

[0044] (1) Preparation of emission nanosuspension: weigh 1mL of SiC nanoparticles and 1mL of SiO 2 Nanoparticles, mixed and dissolved in 10mL of isopropanol solution, stirred at room temperature with a magnetic stirrer at a speed of 500r / min for 20 minutes to form a uniform nanosuspension;

[0045] (2), preparation of emission nanoparticle layer: pour the nanosuspension of mixed particles into Iwata spray gun W-77-G type spray gun, and spray on the upper surface of aluminum foil, the bulk density can be controlled by controlling the number of spraying times, spraying 20 times ( About 20μm), put it in a cool place and volatilize the organic solvent;

[0046] (3), 10mL of TiO with a particle size of 500nm 2 Nanoparticles were dissolved in 30mL isopropanol solution, and stirred at room temperature with a magnetic stirrer at a speed of 500r / min for 20 minutes to form a uniform TiO 2 Nanosuspension;

[0047] (4), the TiO 2 Pour the nano-suspension into the Iwata spray gun W-77-...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of nanometer particles of spectral selectivity, and particularly relates to a radiation refrigeration double-layer nanometer coating and a preparation method thereof. The upper layer of the coating is a reflection nanometer particle layer which is formed by nanometer particles with the particle size range of 200-1000 nm and contains one or more of TiO2, ZnO, ZnS, ZrO2 and Y2O3. The lower layer of the coating is a reflection nanometer particle layer which is formed by nanometer particles with the particle size range of 40-100 nm and contains one or more of SiC, SiO2 and BN. The radiation refrigeration double-layer nanometer coating has great application value in the fields of building energy conservation, electronic device heat dissipation, food fresh keeping and the like. The radiation refrigeration double-layer nanometer coating is simple in preparation method, low in cost and high in process controllability, and raw materials can be easily obtained.

Description

technical field [0001] The invention belongs to the field of spectrally selective nanoparticles, in particular to a radiation cooling double-layer nano coating and a preparation method thereof. Background technique [0002] Due to the "greenhouse effect" and the intensification of global warming, the global demand for cooling has increased significantly. The general active cooling methods, such as air conditioners and electric fans, consume a lot of energy, so passive cooling technologies that do not consume extra energy have received more attention in recent years. [0003] Radiation cooling is a typical passive cooling method. Its principle is to cool the object by adjusting the emissivity of the surface of the outdoor object and increasing its heat exchange with the extremely low temperature outer space. Radiation cooling can be applied in building energy saving, heat dissipation of electronic equipment, cooling of solar cells and other fields. Since the atmosphere has ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/33C09D1/00C09D7/12B05D1/02
Inventor 鲍华闫晨赵长颖王博翔
Owner SHANGHAI JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com