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Method for regulating and controlling infrared emissivity of coating

A technology of infrared emissivity and coating, which is applied in coatings, coatings that absorb radiation, and devices that coat liquids on surfaces, etc. problems, to achieve the effect of easy promotion and application, low cost, and simple process technology route

Active Publication Date: 2021-10-22
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the preparation method of high infrared emissivity coating is relatively complicated, and it is also difficult to realize the regulation of infrared emissivity by changing the process parameters

Method used

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  • Method for regulating and controlling infrared emissivity of coating

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The technique of preparing a pores adjustable in the surface of the coating is achieved by the technique of regulating the infrared emissivity of the coating, wherein the following steps are included:

[0031] (1) Weighing 60 g of silicone resin dilution by 20 g of ethanol, 10 g of carbon nanotubes and 5 g of polyethylene glycol, the molecular weight is 200, and the viscosity of the system is 800 cp;

[0032] (2) Disperse the system in step (1) to the circulating grinder, the rotational speed is adjusted to 5000 rpm, the dispersion time is 1 h;

[0033] (3) Weigh 5G titanate tetrabutyrate to add a mixed dispersion obtained in step (2), using a mechanical mixer, a stirring speed of 500 rpm, and the stirring time is 30 min to obtain a spray liquid;

[0034] (4) Clean the substrate aluminum sheet with acetone, ethyl acetate, ethanol, and water, and dried in an oven;

[0035] (5) Putting the spray liquid prepared by step (3) into the spray gun, the air pressure is 3ATM, the spr...

Embodiment 2

[0037] The technique of preparing a pores adjustable in the surface of the coating is achieved by the technique of regulating the infrared emissivity of the coating, wherein the following steps are included:

[0038] (1) Weigh 60 g of silicone resin by 20 g isopropyl alcohol, and 10 g of carbon nanotubes and 5 g of polyethylene glycol, the molecular weight is 200, and the viscosity of the system is 800 cp;

[0039] (2) Disperse the system in step (1) to the circulating grinder, the rotational speed is adjusted to 5000 rpm, the dispersion time is 1 h;

[0040] (3) Weigh 5G titanate tetrabutyrate to add a mixed dispersion obtained in step (2), using a mechanical mixer, a stirring speed of 500 rpm, and the stirring time is 30 min to obtain a spray liquid;

[0041] (4) Clean the substrate aluminum sheet with acetone, ethyl acetate, ethanol, and water, and dried in an oven;

[0042] (5) Putting the spray liquid prepared by step (3) into the spray gun, the air pressure is 3ATM, the spra...

Embodiment 3

[0044] The technique of preparing a pores adjustable in the surface of the coating is achieved by the technique of regulating the infrared emissivity of the coating, wherein the following steps are included:

[0045] (1) Weighing 60 g of silicone resin dilution by 20 g of ethanol, 10 g of silicon sulphide and 5 g of polyethylene glycol, the molecular weight is 500, and the viscosity of the system is 800 cp;

[0046] (2) Disperse the system in step (1) to the circulating grinder, the speed adjustment is

[0047] 5000 rpm, dispersion time is 1 h;

[0048](3) Weigh 5G titanate tetrabutyrate to add a mixed dispersion obtained in step (2), using a mechanical mixer, a stirring speed of 500 rpm, and the stirring time is 30 min to obtain a spray liquid;

[0049] (4) Clean the substrate aluminum sheet with acetone, ethyl acetate, ethanol, and water, and dried in an oven;

[0050] (5) Put the spray liquid prepared by step (3) into the spray gun, the air pressure is 3ATM, the spray gun is 20...

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Abstract

The invention discloses a method for regulating and controlling infrared emissivity of a coating. The method comprises the following steps: diluting a film-forming resin by using a proper organic solvent to form a binary homogeneous system, adding an infrared absorbing material, and spraying to preliminarily obtain an infrared absorbing coating. According to the invention, when the curing environment of the system is changed by adjusting the external temperature and humidity, the system is changed from a thermodynamic steady state to an unsteady state, so that phase separation tends to occur to reduce the free energy of the system and form a high-molecular resin rich phase and a high-molecular resin lean phase, the high-molecular resin rich phase forms a pore wall of the material in the curing process, and pores are formed in the surface of the material in the space left after the high-molecular resin lean phase is removed; and the pores formed on the surface of the coating have micron-sized pores matched with the wavelength of infrared light, and the infrared absorption performance of the coating is effectively improved by forming a light trapping effect, so that the coating with high infrared emissivity is obtained.

Description

Technical field [0001] The present invention relates to the preparation of a high infrared emissivity coating, and more particularly to a method for obtaining a high infrared emissive coating by regulating the surface porous structure of the coating. Background technique [0002] With the development of technology and industries, the application range of infrared radiation materials with high emissivity is continuously expanded. From the most beginning of infrared dry and heating, it has been gradually expanded to aerospace, industrial kiln, architectural coating, metallurgical manufacturing and so on. field. High emissive coating serves as a new heat-resistant protective coating having infrared radiation capabilities, with an increase in thermal radiation, strengthening heat transfer. It can be applied to the surface of the instrument equipment with the emissivity requirements, which has a significant effect on improving the radiation of the infrared heat source of the instrumen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D127/12C09D7/20C09D5/32B05D1/02B05D5/00B05D7/14B05D7/24
CPCC09D183/04C09D127/12C09D7/20C09D5/32B05D5/00B05D7/24B05D7/14B05D1/02C08K2201/011C08K2003/3009B05D2202/25B05D2202/45B05D2203/35B05D2203/00C08K3/041C08K3/30C08K3/042
Inventor 朴明星李朝龙王啸史浩飞
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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