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A kind of broad-spectrum infrared absorbing coating and preparation method thereof

An infrared absorption and wide spectrum technology, applied in the field of absorption coating composition and preparation, can solve the problems of high cost, absorption layer burning, complicated process, etc., and achieve the effect of good weather resistance and excellent chemical corrosion resistance.

Active Publication Date: 2018-04-24
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional graphite coating will burn the absorbing layer due to a large amount of heat in a short time, and white spots will appear
Due to its good electrical properties, gold black has the characteristics of high absorption efficiency and wide absorption band. However, because the raw material of gold black is precious metal—gold, the cost of existence is relatively high, and special equipment is required. Evaporation is carried out under a protective atmosphere, the whole process is complicated, the cost is high, and the performance stability of the finished product is not good
In addition, the process of depositing metallic black (such as gold black, platinum black) on thermal radiation detectors has so far been difficult to achieve the deposition level of black paint
[0004] Regarding infrared absorbing coatings, at present, they are more limited to conditions such as certain wave bands, such as near infrared, or solar spectrum selective absorbing coatings in different temperature ranges, etc., but it is rare to see that they are really suitable for wide-spectrum infrared absorbing coatings.

Method used

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  • A kind of broad-spectrum infrared absorbing coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0032] (1) Grinding, polishing, and cleaning the commercially available or self-made modified lead perovaginate-doped thermoelectric ceramic substrate.

[0033] (2) Weigh respectively 45% bisphenol A type liquid epoxy resin, 10% dodecyl to myristyl glycidyl ether, 30% inorganic filler (commercially available carbon black of 3% respectively) by mass percentage , 21% 0.3μm SiC powder, 6% nano Al 2 o 3 Powder and 9% commercially available carbon black, the three mass percentages are 10%:70%:20%) and 15% EH-4360 latent curing agent.

[0034] (3) Dilute bisphenol A liquid epoxy resin with dodecyl to tetradecyl glycidyl ether.

[0035] (4) SiC and Al were separated by ultrasonic dispersion (50min) process 2 o 3 The powder is dispersed in the diluted bisphenol A liquid epoxy resin, and then carbon black and BYK-9076 dispersant produced in Germany (the amount of dispersant is 15% of the amount of carbon black added) is added to the mixture containing dispersed SiC and Al 2 o 3 T...

Embodiment example 2

[0039] (1) Grinding, polishing, and cleaning the commercially available or self-made modified lead perovaginate-doped thermoelectric ceramic substrate.

[0040] (2) weigh 65% cycloaliphatic epoxy resin, 5% lauryl to tetradecyl glycidyl ether, 20% inorganic filler (respectively 4% commercially available carbon black, 12% by mass percentage) % 10μm SiC powder, 4% nano Al 2 o 3 Powder, the three mass percentages are 20%: 60%: 20%) and 10% EH-4360 latent curing agent.

[0041] (3) Dilute cycloaliphatic epoxy resin with dodecyl to tetradecyl glycidyl ether.

[0042] (4) Combine SiC and Al with ultrasonic dispersion (30min) and mechanical stirring (30min) 2 o 3 The powder is dispersed in the diluted cycloaliphatic epoxy resin, and then carbon black and BYK-9076 dispersant produced in Germany (the amount of dispersant is 20% of the amount of carbon black) is added to the mixture containing dispersed SiC and Al 2 o 3 Uniformly disperse in the alicyclic epoxy resin, and finally a...

Embodiment example 3

[0046] (1) Grinding, polishing, and cleaning the commercially available or self-made modified lead perovaginate-doped thermoelectric ceramic substrate.

[0047] (2) weigh 60% cycloaliphatic epoxy resin, 8% lauryl to myristyl glycidyl ether, 20% inorganic filler (respectively 6% commercially available carbon black, 4% by mass percentage) % nano Al 2 o 3 powder and 10% nano Fe 2 o 3 Powder, the three mass percentages are 30%: 20%: 50%) and 12% isophorone diamine (IPDA) curing agent.

[0048] (3) adopt dodecyl to tetradecyl glycidyl ether to dilute cycloaliphatic epoxy resin;

[0049] (4) Using ultrasonic dispersion (30min) and mechanical stirring (60min) to combine Al 2 o 3 and Fe 2 o 3 The powder is dispersed in the diluted cycloaliphatic epoxy resin, and then carbon black and Swiss dispersant EFKA-4061 (the amount of dispersant is 5% of the amount of carbon black) are added into the 2 o 3 and Fe 2 o 3 Uniformly disperse in the alicyclic epoxy resin, and finally add...

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Abstract

The invention discloses a broad-spectrum infrared absorption coating and a preparation method thereof. In composition, an inorganic filler of the adsorption coating comprises three combinations: (1) C (carbon black)+SiC+Al2O3; (2) C (carbon black)+Al2O3+Fe2O3; and (3) C (carbon black)+CuO. The preparation method comprises the steps of: firstly, after carrying out preprocessing of flattening, polishing and the like on a pyroelectric ceramic substrate, uniformly dispersing the inorganic filler, a curing agent, a diluent, epoxy resin and the like by adopting a combined method of physical dispersion and chemical dispersion, and preparing an epoxy resin sizing agent; then coating the preprocessed pyroelectric ceramic surface with the epoxy resin sizing agent by a silk-screen printing or spraying method, and after curing, obtaining the infrared adsorption coating. As the infrared adsorption coating, the adsorption coating can be widely applied to devices of a laser calorimeter, an infrared sensor, a thermal radiation detector and the like.

Description

technical field [0001] The invention relates to a composition of an absorbing coating and a preparation method thereof, in particular to a broad-spectrum infrared absorbing coating and a preparation method thereof. The developed coating can be used for devices such as laser energy meters, infrared sensors or thermal radiation detectors. Background technique [0002] Due to the advantages of high spectral resolution, good spatial and temporal coherence, high-frequency pulse or continuous adjustment, and high energy density, laser is a high-tech technology used in my country's industrial and agricultural production, national defense construction, scientific research, and medical care. fields have been widely used. In order to better apply lasers and lasers, it is necessary to accurately measure the relevant parameters of the laser, such as the energy of the laser, so that the laser technology can be more widely used effectively. The most common method of laser energy measureme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D7/61C09D5/32
CPCC08K3/04C08K3/22C08K3/34C08K2003/2227C08K2003/2248C08K2003/2272C08K2201/011C08L2201/08C08L2201/10C09D5/18C09D5/32C09D7/61C09D163/00
Inventor 黄清伟乔冠军刘桂武邵海成
Owner JIANGSU UNIV
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