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High-temperature infrared radiation coating and preparation method thereof

A radiation coating and high-temperature infrared technology, applied in the direction of reflection/signal coating, polyamide coating, coating, etc., can solve the problems of low use temperature, coating agglomeration, high cost, etc., achieve improved radiation performance and life, simple preparation process, The effect of improving the service life

Inactive Publication Date: 2011-08-17
唐山晟科陶瓷制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the manufacturing process of nano-scale infrared radiation coatings is complicated and the cost is high.
[0003] At present, commercially available paints often add organic dispersants (such as CMC, etc.) to ensure the suspension and uniformity of the paint. During the storage of the paint, the dispersant is prone to failure and causes the paint to agglomerate, affecting construction and use.
At the same time, domestic coatings often use binders such as water glass and silica sol, which have low service temperature and poor bonding strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: This infrared radiation coating is made by putting solid material and liquid material into a wet high-efficiency grinding machine at a weight ratio of 1:1.2, mixing and grinding for 4 hours. In the obtained paint: the particle size of 70% by weight of the paint components is 100 nm to 500 nm, and the particle size of 30% by weight is 500 nm to 2 microns.

[0019] The weight percent of each component in the solid material is: 35% zirconium silicate; 5% cordierite; 30% brown corundum; 6% silicon oxide; 6% iron oxide; 15% chromium oxide; 2% clay; modified bentonite 1%.

[0020] The liquid material is a mixed solution of PA-80 glue and water, and the percentage by weight is: 40% of PA-80 glue, and the rest is water.

[0021] In this example, the total emissivity of the coating is 0.90, and the bond strength is 3 grades. Suspension test: take 200mL of paint, stir evenly, place them in measuring cups, let stand for 72 hours, no delamination occurs.

Embodiment 2

[0022] Example 2: This infrared radiation coating is made by putting solid material and liquid material into a wet high-efficiency grinding machine at a weight ratio of 1:1.2, mixing and grinding for 4 hours. In the obtained paint: the particle diameter of 80% by weight of the paint components is 100 nm to 500 nm, and the particle size of 20% by weight is 500 nm to 2 microns.

[0023] The weight percent of each component in the solid material is: chromium oxide 5%; zirconium silicate 20%; brown corundum 45%; silicon oxide 10%; iron oxide 5%; cordierite 8%; clay 5%; modified bentonite 2%.

[0024] The liquid material is a mixed solution of PA-80 glue, aluminum chromium phosphate and water, and the percentage by weight is: 25% of PA-80 glue, 35% of aluminum chromium phosphate, and the rest is water.

[0025] In this example, the total emissivity of the detected coating is 0.92, and the bond strength is 3 grades. Suspension test: take 200mL of paint, stir evenly, place them in ...

Embodiment 3

[0026] Example 3: This infrared radiation coating is made by putting solid material and liquid material into a high-efficiency wet grinding machine with a weight ratio of 1:1.2, mixing and grinding for 4 hours. In the obtained paint: the particle size of 73% by weight of the paint component is 100 nm to 500 nm, and the particle size of 27% by weight is 500 nm to 2 microns.

[0027] The weight percent of each component in the solid material is: chromium oxide 10%; zirconium silicate 22%; brown corundum 33%; silicon oxide 5%; iron oxide 15%; cordierite 9%; clay 1%; modified bentonite 5%.

[0028] The liquid material (binder) is a mixed solution of PA-80 glue, aluminum chromium phosphate and water, and the percentage by weight is: 30% of PA-80 glue, 20% of aluminum chromium phosphate, and the rest is water.

[0029] In this example, the total emissivity of the detected coating is 0.94, and the bonding strength is at grade 3. Suspension test: take 200mL of paint, stir evenly, pl...

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Abstract

The invention discloses a high-temperature infrared radiation coating and a preparation method thereof. The coating is prepared by mixing a solid material and a liquid material according to a weight ratio of 1:1.2, wherein the particle size of the components of the coating is between 100 nanometers and 2 micrometers; the liquid material is an adhesive; the solid material comprises the following components in percentage by weight: 20 to 35 percent of zirconium silicate, 5 to 15 percent of cordierite, 30 to 45 percent of brown fused alumina, 5 to 15 percent of silicon oxide, 5 to 15 percent of chromium oxide, 5 to 15 percent of ferric oxide, 1 to 5 percent of clay and 1 to 5 percent of modified bentonite. The coating has improved radiation performance and service life and has the characteristics of simple preparation process and low cost; when used in furnaces, the coating does not generate volatile matters and does not pollute products; the coating has excellent dispersion state and can be stored for a long time without dimixing; and the use temperature range is wide, and the coating is applicable to different furnace types.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, in particular to a high-temperature infrared radiation coating and a preparation method thereof. Background technique [0002] In recent years, infrared radiation coatings have been developed towards superfineness. Theoretical studies have shown that the nanometerization of high-emissivity energy-saving coatings can further increase the emissivity and absorptivity of coatings, thereby bringing more significant energy-saving effects. At the same time, the adhesion of ultra-fine particles on the substrate is extremely strong, and even some ultra-fine particles can penetrate into the substrate material, which completely changes and strengthens the surface properties of the substrate material, and can completely eliminate coating peeling and use effects. Even under extreme rapid cooling and rapid heating conditions, there will be no cracking and peeling on the surface. For example, the m...

Claims

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Application Information

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IPC IPC(8): C09D177/00C09D5/33
Inventor 徐锦标王福郭金砚邹艺峰刘得顺王京甫杨连弟
Owner 唐山晟科陶瓷制品有限公司
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