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Nanometer silicon carbide-series infrared radiation coating and preparation method thereof

An infrared radiation coating and nano-silicon carbide-based technology are applied in the field of nano-silicon carbide infrared radiation coating and its preparation, which can solve the problems of unstable coating infrared radiation rate, decrease of infrared radiation rate, poor coating adhesion, etc. Excellent thermal shock resistance, improve infrared emissivity and absorption rate, and increase the effect of radiant heat utilization

Inactive Publication Date: 2012-04-18
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the existing patented technology of infrared radiation coatings is dedicated to improving the ubiquitous coating infrared radiation rate instability in coatings. As the temperature rises, the infrared radiation rate decreases rapidly; and the poor adhesion of the coating on the surface of the substrate, the use effect drop and other issues

Method used

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  • Nanometer silicon carbide-series infrared radiation coating and preparation method thereof
  • Nanometer silicon carbide-series infrared radiation coating and preparation method thereof
  • Nanometer silicon carbide-series infrared radiation coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Take by weighing 3Kg of water glass with a mass percentage content of 30%, pour it into a container, add 6Kg of water, stir well, then add 100g of sodium hexametaphosphate and 20g of modified paraffin, stir well to obtain a liquid phase mixture; D. 50 100nm nano silicon carbide powder 4.5Kg, D 50 2.1Kg of 2μm zirconia powder, D 50 1Kg of 1.8μm chromium oxide powder, D 50 1.5Kg of 1μm iron oxide powder, D 50 0.8Kg bentonite powder of 1.2μm, D 50 0.5Kg of silica fume powder with a diameter of 1 μm was added into the container and stirred evenly to obtain a powder radiation material mixture. Fully mix the above-mentioned powder radiation material mixture and the liquid phase mixture together and put them into a horizontal sand mill with a ball-to-material ratio of 0.5:1, sand mill and homogenize for 3 hours, and filter through a 325-400 mesh screen After the treatment, the nano-silicon carbide-based infrared radiation coating is obtained.

[0048] According to the te...

Embodiment 2

[0050] Weigh 2.5Kg of aluminum dihydrogen phosphate with a mass percentage of 30%, pour it into a stirring container, add 22Kg of water, stir evenly, then add 30g of sodium dodecylbenzenesulfonate and 15g of modified paraffin, stir Obtain the liquid phase mixture evenly; Weigh D 50 8Kg of nano-silicon carbide powder of 65nm, D 50 1.5μm zirconia powder 3Kg, D 50 1.5μm chromium oxide powder 0.5Kg, D 50 1Kg of 1μm iron oxide powder, D 50 0.6Kg bentonite powder of 1.2μm, D 50 0.5Kg of silica fume powder with a thickness of 1 μm was added into the container and stirred evenly to obtain a powder radiation material mixture. Fully mix the above-mentioned powder radiation material mixture and the liquid phase mixture together and put them into a vertical sand mill with a ball-to-material ratio of 1:1, sand mill and homogenize for 2 hours, and filter through a 325-400 mesh screen After the treatment, the nano-silicon carbide-based infrared radiation coating is obtained.

[0051] A...

Embodiment 3

[0053] Weigh 1.2Kg of silica sol with a mass percentage of 30%, pour it into a stirring container, add 6Kg of water, stir evenly, then add 200g of sodium polyacrylate and 80g of organic silicon, stir evenly to obtain a liquid phase mixture; weigh D 50 80nm nano silicon carbide powder 6.5Kg, D 50 2μm zirconia powder 1.5Kg, D 50 1.8μm chromium oxide powder 0.6Kg, D 50 0.5Kg of 1μm iron oxide powder, D 50 1Kg of 1.8μm nickel oxide powder, D 50 Bentonite powder 1.2μm 1Kg, D 50 0.3Kg of silica fume powder with a thickness of 1 μm was added into the container and stirred evenly to obtain a powder radiation material mixture. Fully mix the above-mentioned powder radiation material mixture and the liquid phase mixture together and put them into a pin-type sand mill with a ball-to-material ratio of 0.8:1. Sand mill and homogenize for 3 hours, and pass through a 325-400 mesh screen. After filtering, the nano-silicon carbide-based infrared radiation coating is obtained.

[0054] Acc...

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Abstract

The invention belongs to the field of far infrared energy-saving coating used for a high-temperature industrial furnace, which particularly relates to a nanometer silicon carbide-series infrared radiation coating and a preparation method thereof. The coating is composed of a powder radiation material, a binding material, a slurry accessory ingredient and water, wherein the mass ratio of the waterto the powder radiation material is (0.5-2):1; the binding material is 10-30% of the total mass of powder radiation material; the slurry accessory ingredient is 0.1-3% of the total mass of powder radiation material; and the powder radiation material is composed of nanometer silicon carbide powder, zirconia powder, chromium hemitrioxide powder, ferric oxide powder, nickel oxide powder, bentonite powder and siliceous dust powder. The infrared energy-saving radiation coating disclosed by the invention has the advantages of high radiation coefficient and excellent thermal shock resistance. After high-temperature sintering, a sintering layer is formed on a refractory brick or cellucotton, the sintering layer can be firmly adhered on the surface of the lining of a kiln to perform the energy-saving effect on increasing radiant heat utilization and reducing heat loss.

Description

technical field [0001] The invention belongs to the field of far-infrared energy-saving coatings used in high-temperature industrial furnaces in the fields of metallurgy, ceramics, machinery, petrochemicals, and medicine, and particularly relates to a nano-silicon carbide-based infrared radiation coating and a preparation method thereof. Background technique [0002] In recent years, the problem of energy crisis has become more and more serious, and energy saving and consumption reduction have become an important issue to be solved urgently by users of high temperature industrial furnaces. Paint the paint with high infrared radiation rate on the inner wall of the high-temperature industrial furnace to increase the blackness of the inner wall of the furnace, strengthen the heat exchange in the furnace, improve the matching between the material and the infrared radiation wave of the furnace wall, thereby improving the thermal efficiency, which is the best way to save energy and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 杨筠李永李江涛李芳刘贯重章荣会
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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