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Powder material with high infrared radiance in broadband and preparation method of power material

A technology of infrared radiation and powder materials, which is applied in the field of functional materials, can solve the problems of inability to maintain radiation ability, decrease of infrared radiation rate, mismatch of strong absorption segments, etc., and achieve practicality, simple preparation method, and reduced structural symmetry Effect

Inactive Publication Date: 2012-08-15
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing infrared radiation powder generally only has a high emissivity in a specific band (6-18 μm), and there is a mismatch between the strong radiation band and the strong absorption band of the heated object.
In addition, there are more or less other deficiencies in some commonly used radiation base materials. For example, the high-temperature oxidation of silicon carbide limits its radiation characteristics; another example is zirconia (or zircon sand) and chromium oxide. Decrease with increasing temperature, unable to maintain radiation capability at high temperature

Method used

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  • Powder material with high infrared radiance in broadband and preparation method of power material
  • Powder material with high infrared radiance in broadband and preparation method of power material
  • Powder material with high infrared radiance in broadband and preparation method of power material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] According to the mass ratio converted into oxides, MgO:Al 2 o 3 : SiO 2 :BaO:Fe 2 o 3 =12.5:34:46:5:2.5 Weigh magnesium nitrate (Mg(NO 3 ) 2 ·6H 2 O), aluminum nitrate (Al(NO 3 ) 3 9H 2 O), orthoethyl silicate (TEOS), barium nitrate (Ba(NO 3 ) 2 ) and ferric nitrate (Fe(NO 3 ) 3 9H 2 O) each raw material; above-mentioned all raw materials are dissolved in the mixed solvent that deionized water and dehydrated alcohol form, wherein the gross mass of raw material: deionized water quality: dehydrated alcohol quality=1: 4: 10; Stir at room temperature After 1 hour, put it in an oven at 90°C for 18 hours; raise the temperature to 600°C at a heating rate of 150°C per hour, and pre-fire at 600°C for 3 hours in an air atmosphere; grind, and then press the heating rate at 600°C per hour Heating up to 1300°C, calcining at 1300°C for 2 hours in an air atmosphere; cooling to room temperature with the furnace; grinding, passing through a 150-mesh sieve.

[0024] figur...

Embodiment 2

[0026] According to the mass ratio converted into oxides, MgO:Al 2 o 3 : SiO 2 :BaO:Fe 2 o 3 =12:34:45:4:5 Weigh magnesium nitrate (Mg(NO 3 ) 2 ·6H 2 O), aluminum nitrate (Al(NO 3 ) 3 9H 2 O), orthoethyl silicate (TEOS), barium nitrate (Ba(NO 3 ) 2 ) and ferric nitrate (Fe(NO 3 ) 3 9H 2 O) each raw material; above-mentioned all raw materials are dissolved in the mixed solvent that deionized water and dehydrated alcohol form, wherein the gross mass of raw material: deionized water quality: dehydrated alcohol quality=1: 5: 10; Stir at room temperature After 2 hours, put it in an oven at 80°C for 20 hours; heat up to 800°C at a heating rate of 160°C per hour, and pre-fire at 800°C for 2 hours in an air atmosphere; grind, and then heat up at a rate of 200°C per hour Heating up to 1200°C, calcining at 1200°C for 3 hours in an air atmosphere; cooling to room temperature with the furnace; grinding, passing through a 150-mesh sieve.

[0027] It is detected that when the...

Embodiment 3

[0029] According to the mass ratio converted into oxides, MgO:Al 2 o 3 : SiO 2 :BaO:Fe 2 o 3 =12:33:44:9:2 Weigh magnesium nitrate (Mg(NO 3 ) 2 ·6H 2 O), aluminum nitrate (Al(NO 3 ) 3 9H 2 O), orthoethyl silicate (TEOS), barium nitrate (Ba(NO 3 ) 2 ) and ferric nitrate (Fe(NO 3 ) 3 9H 2O) each raw material; above-mentioned all raw materials are dissolved in the mixed solvent that deionized water and dehydrated alcohol form, wherein the gross mass of raw material: deionized water quality: dehydrated alcohol quality=1: 5: 10; Stir at room temperature After 2 hours, put it in an oven at 70°C for 22 hours; heat up to 900°C at a heating rate of 170°C per hour, and pre-fire at 900°C for 1 hour in an air atmosphere; grind, then press the heating rate at 150°C per hour Heating up to 1150°C, calcining at 1150°C for 4 hours in an air atmosphere; cooling to room temperature with the furnace; grinding, passing through a 150-mesh sieve.

[0030] It is detected that when the ...

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PUM

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Abstract

The invention discloses a powder material with high infrared radiance in a broadband and the preparation method of the powder material. The powder material is of a cordierite material doped with Ba<2+> or / and Fe<3+>. The preparation method of the powder material comprises the steps of: firstly dissolving pioneer raw materials and doped raw materials which form the cordierite into an alcohol-water mixture solvent, stirring, drying, and then prefiring at the temperature of 600-1,000 DEG C under air atmosphere; and forging at the temperature of 1,150-1,350 DEG C; and finally cooling to room temperature along with a furnace. The powder material disclosed by the invention has radiance higher than 0.8 in the infrared waveband of 5-24mu m when being heated to 100 DEG C, especially, the most of infrared radiance is higher than 0.9 in the waveband of 14-20mu m and obviously higher than that of cordierite matrix, thus meeting application requirements in the fields of infrared interior wall insulating coating, infrared ceramic glazed bricks, industrial furance insulating coating and the like.

Description

technical field [0001] The invention relates to an infrared radiation powder material and a preparation method thereof, in particular to a kind of civil and industrial energy-saving field applicable to infrared interior wall thermal insulation coatings, infrared ceramic glazed bricks, industrial kiln thermal insulation coatings and facing bricks, etc. The invention relates to a powder material with high infrared radiation rate in a wide band and a preparation method thereof, belonging to the technical field of functional materials. Background technique [0002] For the sustainable development of society and economy, in recent years, energy conservation and emission reduction has become the goal of the whole society. For industrial kilns (such as firing refractory bricks, synthetic chemicals, etc.) that are indispensable for industrial production, due to their high operating temperature, the heat exchange is mainly radiative heat transfer. Based on the analysis of heat trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/195
Inventor 刘茜唐馥涵张孔庄建东费凡
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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