Method for preparing zirconium oxide ceramic by 3D (Three Dimensional) printing based on photo-curing molding

A technology of zirconia ceramics and ceramic powders, applied in the field of 3D printing, can solve the problems of heavy dependence on molds and the inability to prepare complex and precise structures

Inactive Publication Date: 2017-05-17
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention provides a method for preparing zirconia ceramics based on 3D printing based on photocuring molding, which is used to solve the problem that in the prior art, the molding method of zirconia ceramics has a large dependence on molds and cannot prepare complex and precise structures. technical flaws

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  • Method for preparing zirconium oxide ceramic by 3D (Three Dimensional) printing based on photo-curing molding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Dissolve 80g of solute in 70g of solvent and mix to obtain premix 1. After mixing 150g of premix 1, 0.8g of photoinitiator and 1g of dispersant evenly, add 150g of zirconia ceramic powder to the mixing system and mix evenly to obtain the first product 1. In this embodiment, the solute is pentaerythritol diacrylate and trimethylolpropane triacrylate, the solvent is polyethylene glycol 300, and the photoinitiator is 2-hydroxyl-2-methyl-1-phenyl-1-acetone , the dispersant is BYK-9076.

[0040] The first product 1 was ball milled to obtain slurry 1. In this embodiment, the ball milling time is 2 hours, the ball milling medium is zirconia ceramic balls, the shape of the ball milling medium is cylindrical, and the diameter of the ball milling medium is 50 mm.

[0041] The slurry 1 is placed in a light curing molding device based on digital light processing (DLP), and the green body 1 is drawn according to the designed ceramic shape through the light curing molding method. ...

Embodiment 2

[0047] 62.5g of solute was dissolved in 87.5g of solvent and mixed to obtain premix 2. After 150g of premix 2, 1g of photoinitiator and 1g of dispersant were mixed uniformly, 225g of zirconia ceramic powder was added to the mixing system and mixed uniformly to obtain the first Product 2. In this example, the solute is 1,6-hexanediol diacrylate, the solvent is n-octanol and polyethylene glycol 300, and the photoinitiator is 2-hydroxy-2-methyl-1-phenyl-1-acetone , the dispersant is BYK-9077.

[0048] The first product 2 was ball milled to obtain slurry 2. In this embodiment, the ball milling time is 3 hours, the ball milling medium is alumina grinding balls, the shape of the ball milling medium is circular, and the diameter of the ball milling medium is 3 mm.

[0049] The slurry 2 is placed in a light-curing molding device based on digital light processing (DLP), and the green body 2 is drawn according to the designed ceramic shape through the light-curing molding method. Amo...

Embodiment 3

[0055] Dissolve 85g of solute in 65g of solvent and mix to obtain premix 3. After mixing 150g of premix 3, 1.5g of photoinitiator and 2g of dispersant, add 225g of zirconia ceramic powder to the mixing system and mix evenly to obtain the first product 3. In this example, the solute is ethoxylated trimethylolpropane triacrylate, the solvent is glycerin and polyethylene glycol 300, and the photoinitiator is 2,2-dimethoxy-1,2-benzophenone. The dispersant is BYK-9076.

[0056] The first product 3 was ball milled to obtain slurry 3. In this embodiment, the ball milling time is 3 hours, the ball milling medium is zirconia grinding balls, the shape of the ball milling medium is cylindrical, and the diameter of the ball milling medium is 3 mm.

[0057] The slurry 3 is placed in a light curing molding device based on digital light processing (DLP), and the green body 3 is drawn according to the designed ceramic shape through the light curing molding method. Among them, the exposure ...

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Abstract

The invention belongs to the technical field of 3D (Three Dimensional) printing and particularly relates to a method for preparing zirconium oxide ceramic by 3D printing based on photo-curing molding. The invention provides a composition which is prepared from the following raw materials: ceramic powder, a pre-mixed solution, a photoinitiator and a dispersant. The invention further provides a preparation method for preparing the zirconium oxide ceramic by utilizing the composition; and the preparation method comprises the following steps: preparing slurry, molding, curing, drying, degreasing and sintering. According to the technical scheme provided by the invention, the molding efficiency is high, and ceramic particles are uniformly dispersed; a prepared blank body is not cracked or deformed, is dense and uniform and has good surface gloss finish, high precision and excellent blank body performances; and meanwhile, the method also has the advantage of high preparation efficiency. According to the technical scheme provided by the invention, the technical defects of a zirconium oxide ceramic molding method in the prior art that the dependence on a mold is too great and a complicated and precise structure cannot be prepared are overcome.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a method for preparing zirconia ceramics by 3D printing based on photocuring molding. Background technique [0002] Because zirconia ceramics have the characteristics of high melting point, stable chemical properties, low high temperature vapor pressure, excellent corrosion resistance and low thermal conductivity, zirconia ceramics have attracted the attention of more and more scientific and technological workers. One of the most actively developed ceramic materials. Nowadays, the research on the application of zirconia ceramics is relatively mature, and various uses have been developed by taking advantage of its excellent properties. Among them, zirconia ceramics with high hardness can be used to prepare forming tools, shaping dies, wire drawing dies, cutting tools, warm extrusion dies, scissors, and golf club heads; zirconia ceramics with high strength and good...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622C04B35/632
CPCC04B35/48C04B35/622C04B35/632B33Y10/00B33Y70/00C04B2235/6026C04B35/63C04B2235/6562C04B2235/6581
Inventor 刘伟吴子薇蒋强国伍尚华伍海东杨玉平
Owner GUANGDONG UNIV OF TECH
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