3D printing porous zirconium oxide ceramic and preparation method thereof

A zirconia ceramic, 3D printing technology, applied in ceramic products, ceramic molding machines, manufacturing tools, etc., can solve the problems of high pore connectivity and high porosity, and achieve high pore connectivity, high porosity, and large surface area. Effect

Pending Publication Date: 2021-01-22
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing 3D printing technology still fails to realize the effective preparation of porous zirconia ceramics with controllable pore structure, high pore connectivity, high porosity, thin pore wall and good mechanical properties.

Method used

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  • 3D printing porous zirconium oxide ceramic and preparation method thereof
  • 3D printing porous zirconium oxide ceramic and preparation method thereof
  • 3D printing porous zirconium oxide ceramic and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0030] The invention provides a preparation method of 3D printing porous zirconia ceramics, comprising the following steps:

[0031] Mixing main ingredients and dispersant to obtain ceramic slurry;

[0032] 3D modeling software is used to construct the parameters of the 3D model of porous zirconia ceramics, and the ceramic slurry is subjected to light-cured 3D printing to obtain a porous zirconia ceramic green body;

[0033] The porous zirconia ceramic green body is subjected to high-temperature debinding and sintering to obtain 3D printed porous zirconia ceramics;

[0034] The main ingredients include the following components in mass percentage: 20-90% of zirconia powder, 10-80% of photosensitive resin premix; the particle size of the zirconia powder is less than 100 μm;

[0035] The exposure intensity of the photocuring 3D printing is 10-500mw / cm 2 , the exposure time is 1-60s, and the paving thickness is 20-500μm;

[0036] The process of high-temperature debinding and si...

Embodiment 1

[0060] In this embodiment, the raw materials of the ceramic slurry include the following components in mass percentage: 99% of the main material, 1% of the dispersant (sodium polyacrylate);

[0061] Among them, the main material includes the following components in mass percentage: 60% of zirconia powder, 40% of photosensitive resin premix, wherein the photosensitive resin premix is ​​a mixture of photosensitive resin and initiator, and the photosensitive resin is polyether acrylate and Polyester acrylate, the mass ratio of polyether acrylate and polyester acrylate is 1:1; Photoinitiator is (2,4,6-trimethylbenzoyl) diphenylphosphine oxide); The photosensitive The mass ratio of resin and photoinitiator is 99:1;

[0062] Composition of zirconia powder: ZrO 2 90wt%, Y 2 o 3 4.5wt%, Ce 2 o 3 3wt%, MgO content 2.5wt%; particle size of zirconia powder 50 0.33μm, D 90 1.1 μm;

[0063] Add the zirconia powder and photosensitive resin premix into a homogenizer, homogenize at a s...

Embodiment 2

[0071] In this embodiment, the raw materials of the ceramic slurry include the following components in mass percentage: main ingredient 99%, dispersant (polyammonium methacrylate) 1%;

[0072] Among them, the main material includes the following components in mass percentage: 70% of zirconia powder, 30% of photosensitive resin premix, wherein the photosensitive resin premix is ​​a mixture of photosensitive resin and initiator, and the photosensitive resin is polyether acrylate and Epoxy acrylate, the mass ratio of polyether acrylate and epoxy acrylate is 1:1; Photoinitiator is phenyl bis (2,4,6-trimethylbenzoyl) phosphine oxide); The photosensitive The mass ratio of resin and photoinitiator is 98.5:1.5;

[0073] Composition of zirconia powder: ZrO 2 88wt%, Y 2 o 3 4.5wt%, Ce 2 o 3 3.5wt%, MgO content 4wt%; particle size of zirconia powder 50 0.29μm, D 90 0.9 μm;

[0074] Add the zirconia powder and photosensitive resin premix into a homogenizer, homogenize at a speed of...

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Abstract

The invention provides 3D printing porous zirconia ceramic and a preparation method thereof, and belongs to the technical field of advanced ceramic materials and additive manufacturing. Zirconia powder serves as a main raw material, the 3D printing zirconia porous ceramic is prepared through photocuring 3D printing and high-temperature glue discharging sintering, rapid and accurate forming of theporous zirconia ceramic can be achieved by accurately controlling the content of the zirconia powder, parameters of photocuring printing and the specific process of high-temperature glue discharging sintering, the pore channel structure is controllable, and ceramic products with complex structures and shapes can be prepared; the method does not need a mold, a pore-forming agent or a pore-forming template, and is low in preparation cost and high in production efficiency. The 3D printing porous zirconium oxide ceramic product prepared by the method is good in mechanical property, high in porosity, thin in pore wall, large in surface area and high in pore passage connectivity, and can be widely applied to the industrial field as a filter, a catalyst carrier, a heat exchanger, a heat accumulator, a bone tissue engineering bracket and the like.

Description

technical field [0001] The invention relates to the technical field of advanced ceramic materials and additive manufacturing, in particular to a 3D printed porous zirconia ceramic and a preparation method thereof. Background technique [0002] Zirconia ceramics have the advantages of corrosion resistance, high temperature resistance, wear resistance, high strength and good toughness, and are known as "ceramic steel" in the field of advanced ceramic materials. Porous zirconia ceramics are widely used in eco-environmental protection, water purification, petrochemical industry, metal smelting, mining metallurgy, automotive machinery, etc. , aerospace and waste heat recovery and other industrial fields. It is very difficult to prepare regular channels and thin-walled porous zirconia ceramics by traditional techniques, and the mechanical properties need to be improved. The pore diameter and pore wall thickness of honeycomb porous zirconia ceramics for catalyst carrier and heat ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B35/48C04B35/622B33Y10/00B33Y70/10B28B1/00
CPCC04B38/00C04B35/48C04B35/622B33Y10/00B33Y70/10B28B1/001C04B2235/6026
Inventor 左洋博杨景周高海瑞金霞张树培
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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