Method for preparing cordierite composite ferrite infrared radiation ceramics

A technology of infrared radiation and ferrite, which is applied in the field of inorganic ceramic materials, can solve the problems of complex preparation methods and incomplete infrared radiation performance, and achieve the effect of improving infrared radiation performance, improving infrared radiation performance, and good uniformity

Inactive Publication Date: 2018-12-07
WUHU YUANKUI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for preparing cordierite composite ferrite infrared radiation ceramics, which solves the problems of complex preparation methods and incomplete infrared radiation performance of cordierite composite ferrite infrared radiation ceramics prepared by the existing sol-gel method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of cordierite composite ferrite infrared radiation ceramics, comprising the following steps:

[0023] (1) by weight, take: 20 parts of Fe 2 o 3 , 60 parts of MnO 2 , 10 Co 2 o 3 , 10 parts of CuO, 20 parts of TiO 2 Mix evenly with 5 parts of ZnO, and prepare ferrite by gel method;

[0024] (2) Weighing 20% ​​of ferrite, 77% of cordierite and 3% of calcined kaolin according to weight percentage, and grinding and mixing the raw materials with an agate mortar to obtain powder, which is set aside;

[0025] (3) adding 3% of the total weight of the powder into the binder solution to granulate, aging for 24 hours, and the binder solution is an aqueous solution of polyethylene glycol with a concentration of 1% by weight;

[0026] (4) Pressing the powder into a molding, drying to obtain a ceramic blank;

[0027] (5) The ceramic blank is fired and molded, and the firing is specifically: the firing is slowly heated to 250°C at a rate of 0.5°C / min, kept ...

Embodiment 2

[0033] A preparation method of cordierite composite ferrite infrared radiation ceramics, comprising the following steps:

[0034] (1) by weight, take: 20 parts of Fe 2 o 3 , 60 parts of MnO 2 , 10 Co 2 o 3 , 10 parts of CuO, 20 parts of TiO 2 Mix evenly with 5 parts of ZnO, and prepare ferrite by gel method;

[0035] (2) Weighing 20% ​​of ferrite, 77% of cordierite and 3% of calcined kaolin according to weight percentage, and grinding and mixing the raw materials with an agate mortar to obtain powder, which is set aside;

[0036](3) adding 3% of the total weight of the powder into the binder solution to granulate, aging for 32 hours, and the binder solution is an aqueous solution of polyethylene glycol with a concentration of 3wt%;

[0037] (4) Pressing the powder into a molding, drying to obtain a ceramic blank;

[0038] (5) The ceramic blank is fired and molded, and the firing is specifically: the firing is slowly heated to 250°C at a rate of 0.5°C / min, kept for 1 hou...

Embodiment 3

[0044] A preparation method of cordierite composite ferrite infrared radiation ceramics, comprising the following steps:

[0045] (1) by weight, take: 20 parts of Fe 2 o 3 , 60 parts of MnO 2 , 10 Co 2 o 3 , 10 parts of CuO, 20 parts of TiO 2 Mix evenly with 5 parts of ZnO, and prepare ferrite by gel method;

[0046] (2) Weighing 20% ​​of ferrite, 77% of cordierite and 3% of calcined kaolin according to weight percentage, and grinding and mixing the raw materials with an agate mortar to obtain powder, which is set aside;

[0047] (3) adding 3% of the total weight of the powder into the binder solution to granulate, aging for 36 hours, and the binder solution is an aqueous solution of polyethylene glycol with a concentration of 2wt%;

[0048] (4) Pressing the powder into a molding, drying to obtain a ceramic blank;

[0049] (5) The ceramic blank is fired and molded, and the firing is specifically: the firing is slowly heated to 250°C at a rate of 0.5°C / min, kept for 1 ho...

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Abstract

The invention relates to a method for preparing cordierite composite ferrite infrared radiation ceramics. The method comprises the following steps: (1) weighing the following components in parts by weight: 20 parts of Fe2O3, 60 parts of MnO2, 10 parts of Co2O3, 10 parts of CuO, 20 parts of TiO2 and 5 parts of ZnO, uniformly mixing, and preparing ferrite by a gel method; (2) weighing 20% of ferrite, 77% of cordierite and 3% of calcined kaolin in percentage by weight, grinding the raw materials by an agate mortar, and uniformly mixing the ground materials to obtain powder for later use; (3) adding an adhesive solution accounting for 3% of the total weight of the powder for granulating, and aging for 24-36 hours; (4) pressing the powder, molding and drying to obtain the ceramic body; and (5)firing and molding the ceramic body, thereby obtaining the cordierite composite ferrite infrared radiation ceramics. With the adoption of the ferrite composite cordierite and kaolin with high radiation properties, the prepared infrared radiation ceramics have low thermal expansion coefficient, excellent thermal shock resistance and high infrared radiation properties.

Description

technical field [0001] The invention relates to a preparation method of cordierite composite ferrite infrared radiation ceramics, belonging to the field of inorganic ceramic materials. Background technique [0002] Infrared radiation ceramics refer to inorganic materials with high emissivity or characteristic emissivity in the infrared band. Radiation is an inherent property of all objects. Any object, when its temperature is higher than absolute zero, can continuously produce infrared radiation. According to Kirchhoff's law, the absorbing capacity and the radiating capacity of a material are equal at the same temperature. The black body has the best radiation characteristics. At any temperature, it can completely absorb and emit radiation of any wavelength. The radiation of a general object is lower than that of a black body at any wavelength. The emissivity is usually used to indicate its closeness to a black body. The emissivity is between 0 and 1, and the greater the ...

Claims

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Application Information

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IPC IPC(8): C04B35/195C04B35/40C04B35/624C04B35/64C04B35/634
CPCC04B35/195C04B35/265C04B35/624C04B35/63468C04B35/64C04B2235/3274C04B2235/349C04B2235/6562C04B2235/9607
Inventor 郭元章波
Owner WUHU YUANKUI NEW MATERIAL TECH CO LTD
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