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A kind of ceramic material and its preparation method and application

A technology of alumina ceramics and slurry, applied in the field of 3D printing materials, can solve the problems of difficult preparation and low toughness

Active Publication Date: 2021-05-11
广东工大资产经营有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention provides a ceramic material and its preparation method and application, which are used to solve the problems of difficulty in preparing ceramic materials with complex shapes and low strength and toughness of ceramic materials

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  • A kind of ceramic material and its preparation method and application

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preparation example Construction

[0032] A preparation method of a ceramic material, comprising the steps of:

[0033] a) Photocuring the slurry containing the ceramic powder to obtain a green body;

[0034] b) Degreasing, impregnating and sintering the green body in sequence to obtain a ceramic material.

[0035] The invention prepares the green body through the light-curing molding method, which has high molding efficiency and high precision of the shape and size of the green body; through degreasing, the green body forms a porous green body without deformation and cracking, and after impregnation, it can realize In the case of a small amount of reinforcing phase as an additive, a ceramic material with high strength and high toughness is prepared.

[0036] In the present invention, the particle size of the ceramic powder is 0.10 μm to 10 μm.

[0037] The ceramic powder is one or more of alumina ceramic powder, zirconia ceramic powder, aluminum nitride ceramic powder and silicon nitride ceramic powder.

[...

Embodiment 1

[0079] (1) Slurry preparation

[0080] Put 100g of α-alumina (ceramic powder, with a bimodal distribution structure; 0.1μm≤particle size≤1μm, purity of 99.99%), 300g of ethanol and 5g of titanate in a planetary ball mill for 12 hours to obtain a dispersed powder. Among them, the ball milling medium used in the ball mill is alumina, the shape of the ball milling medium is spherical, the diameter of the ball milling medium is 3 mm, and the material-to-ball ratio (ratio of the mass of the material in the ball mill to the mass of the grinding body) is 3:1. Mix the above 60g dispersed powder, 40g methacrylamide solution, 2g 2-hydroxy-2-methyl-1-phenyl-1-propanone, and 2g ammonium polyacrylate to prepare a slurry.

[0081] (2) Photocuring molding to obtain green body and drying

[0082] The slurry is placed in the photo-curing molding equipment, and the green body is drawn according to the designed ceramic shape by the photo-curing molding method through the photo-curing molding eq...

Embodiment 2

[0093] (1) Slurry preparation

[0094] Put 90g of α-alumina (ceramic powder, with a bimodal distribution structure; 0.1μm≤particle size≤1μm, purity of 99.99%), 300g of ethanol, and 5g of titanate in a planetary ball mill for 12 hours to obtain a dispersed powder. Among them, the ball milling medium used in the ball mill is alumina, the shape of the ball milling medium is spherical, the diameter of the ball milling medium is 3 mm, and the material-to-ball ratio (ratio of the mass of the material in the ball mill to the mass of the grinding body) is 3:1. Mix the above 70g dispersed powder, 30g methacrylamide solution, 3g 2-hydroxy-2-methyl-1-phenyl-1-propanone, and 8g ammonium polyacrylate to prepare a slurry.

[0095] (2) Photocuring molding to obtain green body and drying

[0096] The slurry is placed in the photo-curing molding equipment, and the green body is drawn according to the designed ceramic shape by the photo-curing molding method through the photo-curing molding eq...

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Abstract

The invention belongs to the technical field of 3D printing materials, and in particular relates to a ceramic material and its preparation method and application. The invention provides a method for preparing a ceramic material, comprising the following steps: a) photocuring a slurry containing ceramic powder to obtain a green body; b) sequentially degreasing, impregnating and sintering the green body , to obtain ceramic materials. The invention prepares the green body through the light-curing molding method, which has high molding efficiency and high accuracy of the shape and size of the green body; through degreasing, the green body forms a porous green body without deformation and cracking, and after impregnation, it can be prepared to have Ceramic material with complex shape, high strength and toughness.

Description

technical field [0001] The invention belongs to the technical field of 3D printing materials, and in particular relates to a ceramic material and its preparation method and application. Background technique [0002] The photocuring molding technology scans the x-y plane with a laser beam of a specific wavelength and intensity controlled by a computer, so that the ceramic slurry is selectively cured, and the drawing operation of one layer is completed, and then the lifting platform moves a layer height in the vertical direction, and then solidifies Another level, such layers are stacked to form a ceramic body. However, it is difficult to prepare ceramic materials with complex shapes by using the light-curing molding process, and the prepared ceramic materials have low strength and toughness, which limits their industrial application. Contents of the invention [0003] In view of this, the present invention provides a ceramic material and its preparation method and applicat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/06C04B35/10C04B35/48C04B35/581C04B35/584C04B35/622B33Y70/10B33Y10/00C04B41/84
CPCB33Y70/00C04B35/10C04B35/48C04B35/581C04B35/584C04B35/622C04B38/0645C04B41/4961C04B41/4983C04B41/84
Inventor 伍尚华伍海东林立甫黄容基
Owner 广东工大资产经营有限公司
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