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Preparation process of porous ceramic

A preparation process and a technology for porous ceramics, applied in the field of ceramics, can solve the problems that porous ceramics are not suitable for the use environment of high air flow, and it is difficult to achieve three-dimensional connectivity.

Pending Publication Date: 2021-05-07
SONGSHAN LAKE MATERIALS LAB +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The applicant found that the pores of porous ceramics are generally formed by a pore-forming agent or sintered by injecting ceramic slurry into a mold. However, the pores formed by a pore-forming agent are generally closed-pore structures, and it is difficult to achieve a better The three-dimensional connectivity; the holes obtained by injecting ceramic slurry into the mold for sintering are generally straight holes, and the porous ceramics made by these two methods are not suitable for the use environment that requires high air flow.

Method used

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  • Preparation process of porous ceramic
  • Preparation process of porous ceramic
  • Preparation process of porous ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The present embodiment provides a preparation process of porous ceramics, which includes:

[0042] Design the three-dimensional model of the three-dimensional model material, convert it into USP format and input it into the 3D printer, and then use the resin to print the three-dimensional model material through the 3D printer. The size of the three-dimensional model material is 140mmx290mmx25mm, and the shape of the hole is a square with a side length of 2mm.

[0043] Immerse the printed 3D model material in the aluminum titanate ceramic slurry, take it out and centrifuge to shake off the excess slurry, and use 0.3MPa compressed air to blow the slurry on the surface of the 3D model material evenly, and then place it in a blast drying oven. Dry at 100°C for 30 minutes; repeat the steps of dipping, centrifuging, purging and drying until the volume fraction of the three-dimensional model material reaches 20%. Among them, the amount of aluminum titanate ceramic slurry is de...

Embodiment 2

[0046] The present embodiment provides a preparation process of porous ceramics, which includes:

[0047] Design the three-dimensional model of the three-dimensional model material, convert it into USP format and input it into the 3D printer, and then use the resin to print the three-dimensional model material through the 3D printer. The size of the three-dimensional model material is 140mmx100mmx25mm, and the shape of the hole is a square with a side length of 1.5mm.

[0048] Immerse the printed 3D model material in the aluminum titanate ceramic slurry, take it out and centrifuge to shake off the excess slurry, and use 0.6MPa compressed air to blow the slurry on the surface of the 3D model material evenly, and then place it in a blast drying oven. Dry at 120°C for 30 minutes; repeat the steps of dipping, centrifuging, purging and drying until the volume fraction of the three-dimensional model material reaches 30%. Among them, the amount of aluminum titanate ceramic slurry is ...

Embodiment 3

[0051] This example provides a preparation process of porous ceramics, the preparation steps of which are basically the same as those of Example 1, the only difference being that the pyrolysis process of Example 3 is carried out in an air atmosphere.

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Abstract

The invention discloses a preparation process of porous ceramics and relates to the technical field of ceramics. The preparation process comprises the following steps: carrying out 3D printing on a three-dimensional model material with three-dimensional communicating holes by adopting resin, coating the surface of a framework of the three-dimensional model material with ceramic slurry containing an adhesive, performing drying and curing, and then carrying out heat treatment to enable the adhesive to be subjected to pyrolysis degreasing and enable the three-dimensional model material to be decomposed to obtain a ceramic green body; and carrying out sintering molding on the ceramic green body. According to the preparation process, the porous ceramic with relatively good pore connectivity can be prepared.

Description

technical field [0001] The present application relates to the technical field of ceramics, in particular, to a preparation process of porous ceramics. Background technique [0002] Porous ceramics are widely used in the fields of metal smelting, catalyst carrier, heat insulation materials and porous media burners because of their pores. The applicant found that the pores of porous ceramics are generally formed by a pore-forming agent or sintered by injecting ceramic slurry into a mold. However, the pores formed by a pore-forming agent are generally closed-pore structures, and it is difficult to achieve a better The three-dimensional connectivity; the holes obtained by injecting ceramic slurry into the mold for sintering are generally straight holes, and the porous ceramics made by these two methods are not suitable for the use environment that requires high air flow. Contents of the invention [0003] The present application provides a preparation process of porous cerami...

Claims

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Application Information

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IPC IPC(8): C04B38/06C04B35/462C04B35/622
CPCC04B38/0615C04B35/462C04B35/622C04B2235/3217C04B2235/3232C04B2235/3206C04B2235/3418C04B2235/3272C04B2235/3227C04B2235/5436C04B2235/5445C04B2235/658C04B2235/656C04B2235/6567C04B2235/96C04B38/0074
Inventor 付超吴泽霖任志恒孔凡磊王乃豪钱志强战斗朱凯
Owner SONGSHAN LAKE MATERIALS LAB
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