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Material used for preparing gradient ceramic through 3D printing technology and preparation method of gradient ceramic

A 3D printing and gradient technology, applied in the field of 3D printing, can solve the problems of reducing sintering temperature, complicated experimental process, and high equipment requirements, and achieve the effect of enhancing connection strength, high material utilization rate, and good toughness.

Inactive Publication Date: 2017-12-01
ZRAPID TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of ultra-fine particles in this process can reduce the sintering temperature of the product, and the obtained gradient coating has fine and good crystals, which greatly improves the performance of the coating. However, the experimental process is more complicated and the equipment requirements are high.

Method used

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  • Material used for preparing gradient ceramic through 3D printing technology and preparation method of gradient ceramic

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1) Preparation of ceramic slurry

[0039] Ceramic powder: alumina, mass percentage in slurry system: 40, 41, 42, ... 76, 77, 78, 79, 80, made into 40 parts of slurry with gradient concentration;

[0040] Dispersant: BYK9076, the dosage is 2.5% of the ceramic powder in the system;

[0041] Prepolymer: 1,6 hexanediol diacrylate and pentaerythritol tetraacrylate (mass ratio 7:1);

[0042] Initiator: 1-hydroxy-cyclohexyl-phenyl ketone, the dosage is 2% of the mass of the prepolymer;

[0043] The above materials are mechanically mixed to prepare a slurry whose mass percentage sum is 100% gradient ceramics;

[0044] 2) Body making

[0045] refer tofigure 1 , spread the prepared gradient slurry layer by layer on the light-curing molding equipment, laser irradiation molding, and then spread the slurry of the next concentration gradient, and then laser irradiation molding, accumulate and irradiate layer by layer, until the entire shape is superimposed get green body;

[004...

Embodiment 2

[0051] 1) Preparation of ceramic slurry:

[0052] Ceramic powder: alumina and zirconia, the mass percentage in the slurry system: alumina is always maintained at 75%, and the percentage of zirconia is divided into 50 successively increasing gradients from 0-5% and added to the system;

[0053] Dispersant: TEGO655, the dosage is 0.3% of the ceramic powder in the system;

[0054] Prepolymer: 1,6 hexanediol diacrylate and pentaerythritol tetraacrylate (mass ratio 7:1);

[0055] Initiator: 1-hydroxy-cyclohexyl-phenyl ketone, the dosage is 2% of the mass of the prepolymer;

[0056] The above materials are mechanically mixed to prepare a slurry for preparing gradient ceramics;

[0057] 2) Body production:

[0058] The prepared gradient slurry is spread layer by layer on the photocuring molding equipment, laser irradiation molding, and then spreading the slurry of the next concentration gradient, and then laser irradiation molding, accumulation layer by layer, laser irradiation, u...

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Abstract

The invention discloses a material used for preparing gradient ceramic through the 3D printing technology and a preparation method of the gradient ceramic. The material comprises ceramic powder, a photoinitiator, prepolymer and a dispersing agent, wherein the mass percentage of the ceramic powder in the system changes in a gradient manner and sequentially increases or decreases, and the mass percentage sum of the components is 100%. The preparation method using the material to prepare the gradient ceramic includes the steps of firstly, preparing slurry, to be more specific, evenly mixing the prepolymer, the ceramic powder, the photoinitiator and the dispersing agent to obtain the series slurry with the mass percentage of the ceramic powder changing in a gradient manner; secondly, forming, to be more specific, coating the series slurry layer by layer, performing photocuring, and accumulating to obtain a green body; thirdly, performing post-processing, to be more specific, subjecting the green body to degreasing and sintering to obtain the gradient ceramic. The material is high in utilization rate and low in energy consumption. The preparation method can prepare gradient materials of optional complex shapes and can avoid subsequent processing.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a material for preparing gradient ceramics by 3D printing technology and a preparation method thereof. The invention belongs to the technical field of materials and manufacturing methods. Background technique [0002] With the development of science and technology, the use environment of materials is becoming more and more complex, and traditional materials are increasingly unable to meet the requirements of modern engineering. The design idea of ​​the gradient material is to select several different materials during the preparation process of the material, and weaken its internal interface by continuously changing the composition and structure of the material, so as to obtain a gradual change in function corresponding to the change of the structure and structure. heterogeneous materials. After nearly 30 years of development, gradient materials have made great progress in re...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/622C04B35/632C04B35/634B33Y10/00B33Y70/00
CPCB33Y10/00B33Y70/00C04B35/10C04B35/622C04B35/632C04B35/63404C04B2235/3244C04B2235/6026C04B2235/75
Inventor 周宏志邢占文戴宪光
Owner ZRAPID TECH CO LTD