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Core-shell-shaped black ceramic particle for 3D printing and preparation method and application thereof

A black ceramic, 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of low thickness of single-layer cured layer, complicated preparation method, small thickness of coating layer, etc., achieve efficient preparation, reduce operation difficulty, and improve strength Effect

Inactive Publication Date: 2021-07-16
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem that the thickness of the black ceramic particle coating layer is small, the preparation method is complicated, and the thickness of the single-layer solidified layer of the ceramic body prepared from the black ceramic particle is low, and the molding is difficult, the present invention proposes a core-shell-shaped black ceramic material for 3D printing. Ceramic particles and their preparation method and application, the thickness of the coating layer of the core-shell black ceramic particles prepared by the present invention is 50-100nm, and the effects of reducing scattering and light absorption are obvious. At the same time, the preparation method of the present invention is simple and does not need to be provided with multiple coating layers

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  • Core-shell-shaped black ceramic particle for 3D printing and preparation method and application thereof
  • Core-shell-shaped black ceramic particle for 3D printing and preparation method and application thereof

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preparation example Construction

[0037] In the second aspect of the present invention, there is provided a method for preparing core-shell black ceramic particles for 3D printing, which includes: mixing the black ceramic matrix with a metal oxide precursor, adjusting the pH, standing still, drying, and calcining. have to.

[0038] In one or more embodiments of the present invention, the metal oxide precursor is selected from aluminum isopropoxide, magnesium nitrate hexahydrate, tetrabutyl titanate, and methyltriethoxysilane.

[0039] Different precursors correspond to different ratios and acid catalysts. The acid corresponding to aluminum isopropoxide is nitric acid, the acid corresponding to magnesium nitrate hexahydrate is citric acid, the acid corresponding to tetrabutyl titanate is nitric acid, and the acid corresponding to methyltriethoxysilane is hydrochloric acid.

[0040] The precursor raw materials are all analytically pure.

[0041] In the present invention, the reaction principle between the blac...

Embodiment 1

[0075] Mix and stir aluminum isopropoxide and deionized water at 90°C, the molar ratio is 1:120, after stirring evenly, add 60g of silicon carbide fiber powder and ultrasonically disperse for 2h, add nitric acid to adjust the pH of the solution to 6 and stir for 20min, 90 After standing at ℃ for 12 hours, it was dried at 80℃ and calcined at 1000℃ for 1 hour to obtain core-shell black ceramic particles for 3D printing.

[0076] Mix the core-shell black ceramic particles used for 3D printing with photosensitive resin to prepare a mixed slurry. The solid content of the mixed slurry is 35%. The 3D printing parameters are: ultraviolet light wavelength 405nm, optical power 50mW / cm 2 Expose for 30s to obtain a cured ceramic green body, degrease at 1000°C for 2h, and sinter at 1500°C for 1.5h to obtain a ceramic sample.

[0077] figure 1 The flow chart of preparing composite ceramic material by 3D printing for this embodiment using core-shell black ceramic particles; figure 2 It is...

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Abstract

The invention belongs to the technical field of black powder ceramic and composite ceramic additive manufacturing, and particularly relates to a core-shell-shaped black ceramic particle for 3D printing and a preparation method and application thereof. The core-shell-shaped black ceramic particle for 3D printing comprises a black ceramic matrix and a coating layer, and the thickness of the coating layer is 50-100 nm; the material of the coating layer is selected from metal oxides. The preparation method comprises the following steps: uniformly dispersing the black ceramic matrix in a precursor suspension, carrying out a polymerization reaction under a certain condition, forming a modified layer with a certain space structure on the surface layer of the coated black ceramic matrix, and carrying out drying and heat treatment to obtain the required powder material coated with the low-scattering and reinforced phase modified layer. The absorption and scattering of the black ceramic material on ultraviolet light in the photocuring process are reduced. Meanwhile, the ceramic material prepared from the core-shell-shaped black ceramic particle through 3D printing is large in thickness and excellent in compactness and mechanical property.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing of black powder ceramics and composite ceramics, and in particular relates to a core-shell black ceramic particle for 3D printing and a preparation method and application thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] 3D printing (3DP) is a kind of rapid prototyping technology, also known as additive manufacturing. It is based on digital model files, using powdered metal or plastic and other bondable materials to construct by layer-by-layer printing. object technology. The representative 3D printing manufacturing technologies mainly include: photocuring molding technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/628C04B35/622C04B35/638C04B35/64B33Y70/10B33Y10/00
CPCC04B35/62805C04B35/62821C04B35/62813C04B35/62852C04B35/622C04B35/638C04B35/64B33Y70/10B33Y10/00C04B2235/656C04B2235/6567C04B2235/6581C04B2235/96
Inventor 刘战强辛明泽王兵
Owner SHANDONG UNIV