Solar heat absorption paint with high weather resistant performance and preparation method thereof

A technology of solar energy absorption and weather resistance, applied in the field of solar energy, can solve the problems of poor adhesion of endothermic coatings, and achieve the effects of improving weather resistance and adhesion, high photothermal conversion efficiency, and low emissivity

Inactive Publication Date: 2018-12-11
HEBEI JIASHICHENG ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the heat-absorbing coating has poor adhesion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment relates to a solar heat absorbing coating with high weather resistance, including the following raw materials in parts by weight: 20 parts of acrylate emulsion, 15 parts of polyimide resin, 7 parts of propylene glycol monomethyl ether, and 4 parts of coated nano fly ash Parts, 5 parts of silicon carbide, 2 parts of zinc oxide, 1 part of dispersant, 6 parts of endothermic agent, 2 parts of defoamer, 2 parts of adhesion promoter, 35 parts of organic solvent.

[0030] Wherein, the heat absorbing agent is a mixture of biochar, manganese dioxide, copper oxide powder and cobalt oxide, and the mass ratio of the biochar, manganese dioxide, copper oxide powder and cobalt oxide is 2:1:2:1 .

[0031] Wherein, the preparation method of described biochar is as follows:

[0032] (1) Grind the corn stalks into small pieces with a length of less than 3cm through a pulverizer, raise the temperature to 400°C at a rate of 15°C / min under oxygen-limited conditions, keep the...

Embodiment 2

[0046] This embodiment relates to a solar heat absorbing coating with high weather resistance, including the following raw materials in parts by weight: 40 parts of acrylate emulsion, 25 parts of polyimide resin, 13 parts of propylene glycol monomethyl ether, and 8 parts of coated nano fly ash Parts, 9 parts of silicon carbide, 4 parts of zinc oxide, 3 parts of dispersant, 9 parts of endothermic agent, 3 parts of defoamer, 4 parts of adhesion promoter, 50 parts of organic solvent.

[0047] Wherein, the heat absorbing agent is a mixture of biochar, manganese dioxide, copper oxide powder and cobalt oxide, and the mass ratio of the biochar, manganese dioxide, copper oxide powder and cobalt oxide is 2:1:2:1 .

[0048] Wherein, the preparation method of described biochar is as follows:

[0049] (1) Grind the corn stalks into small pieces with a length of less than 3cm through a pulverizer, raise the temperature to 400°C at a rate of 15°C / min under oxygen-limited conditions, keep t...

Embodiment 3

[0063] This embodiment relates to a solar heat absorbing coating with high weather resistance, including the following raw materials in parts by weight: 25 parts of acrylate emulsion, 18 parts of polyimide resin, 9 parts of propylene glycol monomethyl ether, and 5 parts of coated nano fly ash 6 parts, silicon carbide 6 parts, zinc oxide 2.1 parts, dispersant 1.4 parts, endothermic agent 7 parts, defoamer 2.2 parts, adhesion promoter 2.7 parts, organic solvent 40 parts.

[0064] Wherein, the heat absorbing agent is a mixture of biochar, manganese dioxide, copper oxide powder and cobalt oxide, and the mass ratio of the biochar, manganese dioxide, copper oxide powder and cobalt oxide is 2:1:2:1 .

[0065] Wherein, the preparation method of described biochar is as follows:

[0066] (1) Grind the corn stalks into small pieces with a length of less than 3cm through a pulverizer, raise the temperature to 400°C at a rate of 15°C / min under oxygen-limited conditions, keep the temperatu...

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Abstract

The invention discloses solar heat absorption paint with high weather resistant performance. The paint is prepared from the following raw materials in parts by weight: 20 to 40 parts of acrylate emulsion, 15 to 25 parts of polyimide resin, 7 to 13 parts of propylene glycol monomethyl ether, 4 to 8 parts of film coated nanometer fly ash, 5 to 9 parts of silicon carbide, 2 to 4 parts of zinc oxide,1 to 3 parts of dispersing agents, 6 to 9 parts of heat absorbents, 2 to 3 parts of anti-foaming agents, 2 to 4 parts of adhesion promoters and 35 to 50 parts of organic solvents. The solar heat absorption paint has good impact resistance, bending resistance, corrosion resistance, anti-aging performance and salt fog resistance; the solar energy absorption rate is higher than 93 percent; the radiation rate is lower than 5 percent; the paint can be used as a selective heat absorption coating of a solar heat collector heat absorption component.

Description

technical field [0001] The invention belongs to the technical field of solar energy, and in particular relates to a solar heat-absorbing coating with high weather resistance and a preparation method thereof. Background technique [0002] The deterioration of the human living environment and the increasing shortage of energy are two major problems facing the world today. The use of new renewable energy is the fundamental way to solve the above problems. Among them, solar energy is clean, inexhaustible and inexhaustible. Become the first choice for new energy. The solar selective absorbing coating has a high absorption rate (α) for the radiation in the visible and near-infrared range of the sun, while its own infrared radiation rate is low, that is, it has a low emissivity (ε), which is the key to solar thermal utilization technology technology, which is crucial to improving collector efficiency. [0003] Authorized notification number CN102286243B discloses a method for pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D5/32C09D5/08C09D7/61C09D7/63C09D7/62C09D7/65
CPCC09D133/04C08K2003/2248C08K2003/2262C08K2003/2289C08K2003/2296C08L2201/08C08L2205/03C09D5/08C09D5/18C09D5/32C09D7/61C09D7/62C09D7/63C09D7/65C08L79/08C08K13/06C08K9/10C08K7/26C08K3/22C08K3/34C08K3/04
Inventor 白莉莉
Owner HEBEI JIASHICHENG ENERGY TECH CO LTD
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