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Overall ordered-local disordered porous ceramic and preparation method thereof

A porous ceramic and integral technology, applied in the field of porous materials, can solve the problems that porous ceramics cannot achieve overall order and design.

Inactive Publication Date: 2021-04-27
SONGSHAN LAKE MATERIALS LAB +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the porous ceramics prepared by the above-mentioned foam template method, mold forming method and pore-forming agent method are all disordered structures, and the pore structure is randomly distributed, which cannot be designed.
However, the porous ceramics prepared by the above-mentioned light-curing 3D printing method cannot achieve overall order and locally disordered porous ceramics.

Method used

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  • Overall ordered-local disordered porous ceramic and preparation method thereof
  • Overall ordered-local disordered porous ceramic and preparation method thereof

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preparation example Construction

[0043] The embodiment of the present application provides a preparation method of integrally ordered-locally disordered porous ceramics, comprising the following steps:

[0044] Step S1, using ceramic powder bonded with an organic bonding material as a raw material, and printing and constructing according to a preset path to obtain a porous material containing a plurality of ordered pores.

[0045] Further, in some embodiments of the present application, the above-mentioned raw materials are prepared according to the following steps:

[0046] Mixing and stirring the ceramic powder and the organic bonding material under heating conditions until uniform, so that the organic bonding material and the ceramic powder are bonded together. Then the materials with larger particle size bonded together are broken into granular raw materials with a particle size in the range of 0.1-5mm.

[0047] Further, the particle size of the raw material is 0.1-5mm.

[0048] Further optionally, the ...

Embodiment 1

[0111] A kind of overall order-locally disordered porous ceramic is provided, which is prepared according to the following steps:

[0112] 80g of zirconia with a particle size of 3μm, 8g of paraffin, 6g of polyethylene, 3.5g of polypropylene, 2g of polyethylene glycol, and 0.5g of stearic acid, heated and mixed at 160°C until uniform, and then crushed to obtain a particle size of 2mm granular raw materials. Three-dimensional modeling software is used to design the porous material structure. The diameter of the ordered pores is 2 mm, and the shape of the porous material is a cubic structure. Then the prepared zirconia granular raw material is introduced into the silo of the printing equipment, and then the granular material is transported to the sample construction mechanism through the feeding system, and then the construction mechanism is heated to 160°C, and the zirconia granular raw material is fed and melted, from The construction mechanism flows out, and the design model...

Embodiment 2

[0116] Provide a kind of overall ordered-locally disordered porous ceramics, its preparation steps are the same as in Example 1, the difference lies in the composition of raw materials and the design of porous structure, specifically as follows:

[0117] 78.2g of alumina with a particle size of 5μm, 9.5g of paraffin, 5.5g of polyethylene, 4.5g of polypropylene, 1.8g of polyethylene glycol, and 0.5g of stearic acid were heated, mixed and stirred at 160°C until uniform, and then crushed to obtain Granular raw materials with a particle size of 1mm. Three-dimensional modeling software is used to design the porous material structure. The diameter of the ordered pores is 1mm, and the shape of the porous material is a regular dodecahedron structure.

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Abstract

The invention relates to the field of porous materials, in particular to integrally ordered and locally disordered porous ceramic and a preparation method thereof. The method comprises the following steps: by taking ceramic powder bonded with an organic bonding material as a raw material, carrying out printing construction according to a preset path to obtain a porous material containing a plurality of ordered pores; removing an organic bonding material in the porous material obtained by printing, and leaving disordered pores in the porous material to obtain a porous ceramic material; and sintering the porous ceramic material. Printing construction is carried out according to a preset path, so that holes in the whole porous ceramic are arranged according to a preset ordered path, and the overall ordered effect is achieved. After the organic bonding material in the porous material is removed, the position where the original organic bonding material is located becomes a new hole. The position of the organic bonding material in the porous material is disordered, so that disordered holes can be locally formed in the porous ceramic, and the integrally ordered and locally disordered porous ceramic is further obtained.

Description

technical field [0001] The present application relates to the field of porous materials, in particular, to a whole ordered-locally disordered porous ceramic and a preparation method thereof. Background technique [0002] At present, a variety of methods for preparing porous ceramics have been publicly reported, including foam template method, mold forming method, pore-forming agent method, and light-curing 3D printing method. [0003] Foam template method, the main steps are coating the ceramic slurry containing powder on the organic foam template with porous structure, and burning the organic foam template after drying to obtain porous ceramics; [0004] Mold molding method, the main steps are to granulate ceramic powder, sintering aids, etc., then fill the granulated material into the mold, and use the pressure molding process to obtain the molded blank, put it into the atmosphere furnace, and sinter it under the atmosphere to obtain porous ceramics; [0005] In the pore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/486C04B35/111C04B35/569C04B35/587C04B35/58C04B35/56B82B1/00B33Y10/00B33Y70/10C04B38/00C04B38/06
CPCC04B35/622C04B35/486C04B35/111C04B35/565C04B35/587C04B35/58078C04B35/5618B82B1/001B33Y10/00B33Y70/10C04B38/00C04B38/068C04B2235/5454C04B2235/5445C04B2235/5436
Inventor 赵国瑞付超王恩哥陈秀娟战斗朱凯
Owner SONGSHAN LAKE MATERIALS LAB