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A high-spectrum selective high-temperature solar energy absorbing coating and its preparation method

A solar energy absorption and selectivity technology, applied in the field of solar thermal, can solve the problems of large investment in continuous production lines, high production costs, harsh process conditions, etc., and achieve enhanced spectral selectivity and high temperature resistance, excellent impact resistance, The effect of low thermal emissivity

Active Publication Date: 2021-02-09
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the continuous production line has a large investment, harsh process conditions, high production costs, and unsatisfactory weather resistance of the coating, which limits its large-scale application

Method used

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  • A high-spectrum selective high-temperature solar energy absorbing coating and its preparation method
  • A high-spectrum selective high-temperature solar energy absorbing coating and its preparation method
  • A high-spectrum selective high-temperature solar energy absorbing coating and its preparation method

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Effect test

Embodiment 1

[0021] A preparation of high-spectrum selective high-temperature solar energy absorbing coating, the specific preparation method is as follows: solvent xylene, wetting and dispersing agent BYK-DISPERSANT-2070, defoamer BYK-044, leveling agent BYK-354 and high temperature resistant resin Add vinyl cage polysilsesquioxane into the container in turn, stir and disperse, and then add light-absorbing pigments (copper oxide, ferric oxide, manganese oxide, in which copper oxide is in the shape of nanorods with a diameter of 30nm and a length of 1 μm , the color is black; Fe3O4 is a nano-powder with a particle size of 80 nm and a specific surface area of ​​20 m 2 / g, the color is black; manganese oxide nanopowder, particle size is 70nm, specific surface area is 20 m 2 / g, color is black) and filler rare earth yttrium (particle size 30nm, specific surface area 40 m 2 / g), use a high-speed disperser, stir at a speed of 800 rpm for 50 min, and then use a sand mill or ball mill to dispers...

Embodiment 2

[0025] A preparation of high-spectrum selective high-temperature solar energy absorbing coating, the specific preparation method is as follows: solvent ethyl acetate, wetting and dispersing agent BYK-DISPERSANT-2070, defoamer BYK-044, leveling agent BYK-354 and high temperature resistant Resin trimethylsilyl cage polysilsesquioxane, etc. were added to the container in sequence, stirred and dispersed, and then light-absorbing pigments (copper oxide, ferric oxide, manganese oxide, copper oxide in the form of nanorods with a diameter of 60nm, The length is 2 μm, the color is black; Fe3O4 is nano-powder, the particle size is 30 nm, and the specific surface area is 60 m 2 / g, color is black; manganese oxide nanopowder, particle size is 30 nm, specific surface area is 90 m 2 / g, the color is black) and filler rare earth yttrium (particle size 75nm, specific surface area is 60m 2 / g), use a high-speed disperser, stir at a speed of 1000 rpm for 80 minutes, and then use a sand mill or...

Embodiment 3

[0029] A preparation of high-spectrum selective high-temperature solar energy absorbing coating, the specific preparation method is as follows: solvent xylene, wetting and dispersing agent BYK-DISPERSANT-108, defoamer BYK-044, leveling agent BYK-354 and high temperature resistant resin Add trimethylsilyl cage polysilsesquioxane into the container in turn, stir and disperse, and then add light-absorbing pigments (copper oxide, ferric oxide, manganese oxide, wherein the copper oxide is in the shape of nanorods with a diameter of 40nm and a length of 1.5 μm, the color is black; ferric oxide is a nano-powder with a particle size of 50 nm and a specific surface area of ​​40 m 2 / g, color is black; manganese oxide nanopowder, particle size is 60 nm, specific surface area is 50 m 2 / g, the color is black) and filler rare earth yttrium (particle size 50nm, specific surface area 45m 2 / g), use a high-speed disperser, stir at a speed of 900 rpm for 60 minutes, and then use a sand mill ...

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Abstract

The invention belongs to the technical field of new energy materials, and discloses a high-spectrum selective high-temperature solar energy absorbing coating and a preparation method thereof. The paint is made of the following raw materials in proportion by weight: 6-12 parts of light-absorbing pigments, 0.5-2 parts of fillers, 15-40 parts of high-temperature resistant resins, 44.4-65 parts of solvents, 2-8 parts of dispersants, and defoamers 0.1‑1 parts, 1‑3 parts of leveling agent. The solar spectrum selective absorption coating prepared by using the coating of the invention has high absorptivity, low thermal emissivity, and excellent thermal shock resistance, impact resistance, bending resistance, water resistance, corrosion resistance and high temperature resistance. The solar absorbing coating prepared by using the coating of the invention has important application prospects in the field of high temperature utilization of solar energy.

Description

technical field [0001] The invention relates to the field of solar photothermal technology, in particular to a hyperspectral selective high temperature solar absorbing paint and a preparation method thereof, and a preparation method of the hyperspectral selective high temperature solar absorbing paint. Background technique [0002] Solar thermal utilization is one of the simplest, most direct, and most effective ways for human beings to utilize solar energy. However, due to the small and discontinuous energy density of solar energy after reaching the earth, it has brought difficulties to large-scale development and utilization. The solar spectrum selective absorption coating is a special coating with high absorption in the ultraviolet-visible-near-infrared band and low emission in the infrared band. Solar absorbing coating is the core material of solar thermal utilization. According to the different use temperature, it can be divided into low temperature, medium and high te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D183/07C09D5/32C09D7/61
CPCC08K2003/2248C08K2003/2262C08K2003/2275C08K2201/011C08L2201/08C09D5/18C09D5/32C09D183/04C08K3/22C08K3/08
Inventor 高祥虎刘刚
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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