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Preparation method of cordierite infrared radiation multiphase ceramic

A technology of infrared radiation and composite phase ceramics, which is applied in the field of inorganic ceramic materials, can solve the problems of incomplete infrared radiation performance and complicated preparation methods, and achieve good infrared radiation performance, good reproducibility, and good thermal shock resistance.

Inactive Publication Date: 2018-12-28
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 infrared radiation composite 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 infrared radiation composite phase ceramics, comprising the following steps:

[0023] (1) According to weight percentage, take: 35% Fe 2 o 3 , 45% MnO 2 , 10%Co 2 o 3 , 10% CuO, ferrite prepared by gel method;

[0024] (2) According to weight percentage, weigh 10% ferrite, 87% cordierite and 3% calcined kaolin, grind and mix the raw materials with an agate mortar to obtain powder, and set aside;

[0025] (3) adding 3% of the total weight of the powder into a binder solution to granulate, aging for 24 hours, the binder solution being a polyethylene glycol aqueous solution with a concentration of 2wt%;

[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 for 1 hour, and then heated to 350°C at 1°C / min, kept For 1 hour, the temperature was raised to 1200°...

Embodiment 2

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

[0034] (1) According to weight percentage, weigh: 35% Fe 2 o 3 , 45% MnO 2 , 10%Co 2 o 3 , 10% CuO, ferrite prepared by gel method;

[0035] (2) According to weight percentage, weigh 10% ferrite, 87% cordierite and 3% calcined kaolin, grind and mix the raw materials with an agate mortar to obtain powder, and set aside;

[0036] (3) adding 3% of the total weight of the powder into the binder solution to granulate, aging for 36 hours, the binder solution being a polyethylene glycol aqueous solution with a concentration of 1 wt%;

[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 hour, and then heated to 350°C at 1°C / min, kept For 1 hour, the temperature was raised to 1...

Embodiment 3

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

[0045] (1) According to weight percentage, weigh: 35% Fe 2 o 3 , 45% MnO 2 , 10%Co 2 o 3 , 10% CuO, ferrite prepared by gel method;

[0046] (2) According to weight percentage, weigh 10% ferrite, 87% cordierite and 3% calcined kaolin, grind and mix the raw materials with an agate mortar to obtain powder, and set aside;

[0047] (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 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 hour, and then heated to 350°C at 1°C / min, kept For 1 hour, the temperature was raised ...

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Abstract

The invention relates to a preparation method of cordierite infrared radiation multiphase ceramic. The preparation method comprises the following steps: (1) weighing 35% of Fe2O3, 45% of MnO2, 10% ofCo2O3 and 10% of CuO in percentage by weight and preparing ferrite through a gel method; (2) weighing 10% of ferrite, 87% of cordierite and 3% of calcined kaolin calculated in percentage by weight, grinding and uniformly mixing the raw materials with an agate mortar to obtain powder for later use; (3) adding a binder solution which accounts for 3% of the total weight of the powder to granulate andaging for 24 to 36 hours, (4) pressing the powder into a shape and drying to obtain a ceramic blank; (5) firing the ceramic blank to obtain the cordierite infrared radiation multiphase ceramic. The preparation method of the cordierite infrared radiation multiphase ceramic disclosed by the invention adopts ferrite composite cordierite with high radiation performances and the calcined kaolin, so that the prepared infrared radiation ceramic is lower in thermal expansion coefficient, good in thermal shock resistance and higher in infrared radiation properties.

Description

technical field [0001] The invention relates to a preparation method of cordierite infrared radiation composite ceramics, which belongs 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 emis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/195
CPCC04B35/195C04B2235/3274C04B2235/349C04B2235/9607
Inventor 郭元章波
Owner WUHU YUANKUI NEW MATERIAL TECH CO LTD
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