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A kind of preparation method of layered ceramic

A ceramic and layered technology, applied in the field of layered ceramics preparation, can solve the problems of high cost and complicated preparation process, and achieve the effect of high molding efficiency, excellent performance and high precision

Active Publication Date: 2018-06-26
广东金瓷三维技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems that the existing preparation method of layered ceramics is limited to millimeter-level thickness, complicated preparation process and high cost, and provides a simple method for preparing layered ceramics with micron-level thickness

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  • A kind of preparation method of layered ceramic

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Effect test

Embodiment 1

[0030] This embodiment provides a method for preparing a layered ceramic with a three-layer structure, and the specific steps are as follows:

[0031] (1) Preparation of slurry

[0032] The first slurry, the second slurry, and the third slurry were prepared respectively as follows: firstly, the ceramic powder, dispersant and ethanol were ball milled in a planetary ball mill (or a roller ball mill in other embodiments) for 8 hours , so that the components are mixed uniformly; then the obtained mixture is dried at 60° C. to obtain a dispersed powder. Then, the dispersed powder, resin and surfactant were ball-milled in a ball mill for 16 hours to mix the components uniformly to obtain the primary slurry. Next, the initial slurry was placed in a negative pressure environment and stirred for 30 minutes to remove air bubbles to obtain a slurry. (The ball milling medium used in the ball milling is alumina, the shape of the ball milling medium is spherical, the diameter of the ball ...

Embodiment 2

[0048] This embodiment provides a method for preparing a layered ceramic with a three-layer structure, and the specific steps are as follows:

[0049] (1) Preparation of slurry

[0050] The first slurry, the second slurry, and the third slurry were prepared respectively as follows: firstly, the ceramic powder, dispersant and ethanol were ball-milled in a planetary ball mill for 8 hours to mix the components evenly; then the obtained mixture was placed in Dry at 60°C to obtain a dispersed powder. Then put the dispersed powder, resin and surfactant in a ball mill for 16 hours to make the components evenly mixed to obtain the primary slurry. Next, the initial slurry was placed under a negative pressure environment and stirred for 60 minutes to remove air bubbles to obtain a slurry. (The ball milling medium used in the ball mill is zirconia, the shape of the ball milling medium is columnar, the diameter of the ball milling medium is 5mm, and the ratio of material to ball is 2:1....

Embodiment 3

[0066] This embodiment provides a method for preparing a layered ceramic with a three-layer structure, and the specific steps are as follows:

[0067] (1) Preparation of slurry

[0068] The first slurry, the second slurry, and the third slurry were prepared respectively as follows: firstly, the ceramic powder, dispersant and ethanol were ball-milled in a roller ball mill for 8 hours to mix the components uniformly; then the obtained mixture was Dry at 60°C to obtain a dispersed powder. Then put the dispersed powder, resin and surfactant in a ball mill for 24 hours to make the components evenly mixed to obtain the primary slurry. Next, the initial slurry was placed in a negative pressure environment and stirred for 20 minutes to remove air bubbles to obtain a slurry. (The ball milling medium used in the ball milling is zirconia, the shape of the ball milling medium is columnar, the diameter of the ball milling medium is 10mm, and the ratio of material to ball is 6:1.)

[006...

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Abstract

The invention relates to the technical field of ceramic manufacturing, in particular to a manufacturing method of laminated ceramics. Slurry can be applicable to a DLP photo-curing face forming method to manufacture laminated ceramic bodies by optimizing the composition and proportioning of the slurry, the forming efficiency is high, ceramic particles in the bodies can be dispersed evenly, and the shape and size accuracy of the bodies is high; then the bodies cannot deform and crack in the manufacturing process by controlling process parameters in degreasing and sintering steps, the laminated ceramics with micron-scale thickness can be manufactured and are uniform in compactness, good in surface smoothness, high in accuracy and excellent in performance, and manufactured ceramic products are high in reliability. The manufacturing method adopts a two-step degreasing method integrating vacuum / atmosphere protection degreasing and air degreasing, can remarkably improve the degreasing efficiency, enables the degreasing time to be shortened from 48-60 hours required by an existing method to 8-20 hours and can also decrease the defects including deformation, cracking, blistering and the like of the bodies due to the too high one-step degreasing and heating rate or the too high pyrolysis rate of organic matter in the bodies.

Description

technical field [0001] The invention relates to the technical field of ceramic preparation, in particular to a method for preparing layered ceramics. Background technique [0002] Layered ceramic composite materials use the idea of ​​bionics to design the structure of ceramic materials. Layered ceramics are mainly composed of high-modulus and low-modulus ceramic materials. At present, the molding process of layered ceramic composite materials mainly includes: (1) stacking and forming of prefabricated layers, the matrix layer and interlayer materials are prefabricated sheets, which are stacked in sequence for pressing and forming; (2) layered laying of dry powder Compression molding, the matrix layer and the interlayer material are dry powder, which are sequentially placed in the mold for pressing and forming; (3) the substrate is coated with the interlayer material slurry and then laminated, the substrate is a prefabricated sheet, the interlayer material is slurry, coated A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/111C04B35/119C04B35/488C04B35/58C04B35/622
Inventor 伍尚华伍海东周茂鹏刘伟吴子薇程利霞李强
Owner 广东金瓷三维技术有限公司
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