Photo-curable 3D (three-dimensional) printing aluminum-base ceramic slurry and method for preparing ceramic mold cores

A 3D printing, aluminum-based ceramic technology, applied in ceramic products, ceramic molding machines, cores, etc., can solve the problems of easy agglomeration, uneven dispersion, and low solid phase content of ceramic particles, and achieve good fluidity and uniform dispersion , the effect of high solid content

Active Publication Date: 2018-05-29
SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the slurry used for photocuring 3D printing ceramics has high viscosity, poor fluidity, ceramic particles are easy to agglomerate, unevenly dispersed, and low solid content in the slurry, which limits the application of photocuring 3D printing in ceramic precision parts. There are currently no reports on the use of light-curing 3D printing technology to prepare complex structural ceramic cores

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] An aluminum-based ceramic slurry for photocuring 3D printing, which is composed of the following raw materials in mass fractions: 40% of ceramic formula powder, 50% of photocurable resin, 2% of photoinitiator, 3% of dispersant, and 2% of anti-settling agent , Leveling agent 2%, defoamer 1%.

[0046] The preparation method of this slurry:

[0047] The slurry described in any of the above is prepared from the following steps:

[0048] (1) Add the photoinitiator to part of the photocurable resin to fully dissolve the photoinitiator;

[0049] (2) Mix the remaining photocurable resin with the solution in step (1), and stir to obtain a low-viscosity photosensitive resin;

[0050] (3) The ceramic formula powder, the low-viscosity photosensitive resin prepared in step (2), the defoamer, the anti-sedimentation agent, and the leveling agent are sequentially added and mixed to obtain a slurry for photocuring 3D printing ceramic cores.

[0051] Preferably: the mixing in the step...

Embodiment 2

[0054] The features of this embodiment that are the same as those of Embodiment 1 will not be repeated here. The difference between this embodiment and Embodiment 1 is that the aluminum-based ceramic slurry for light-curing 3D printing is composed of the following raw materials in mass fraction: ceramic formula powder 60 %, photocurable resin 30%, photoinitiator 2%, dispersant 3%, anti-settling agent 2%, leveling agent 2%, defoamer 1%.

Embodiment 3

[0056] The features of this embodiment that are the same as those of Embodiment 1 will not be described in detail. The difference between this embodiment and Embodiment 1 is that: the aluminum-based ceramic slurry for light-curing 3D printing is composed of the following raw materials in mass fraction: ceramic formula powder 55 %, photocurable resin 43%, photoinitiator 1.6%, dispersant 0.1%, anti-settling agent 0.1%, leveling agent 0.1%, defoamer 0.1%.

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PUM

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Abstract

The invention discloses photo-curable 3D (three-dimensional) printing aluminum-base ceramic slurry and a method for preparing ceramic mold cores. The photo-curable 3D printing aluminum-base ceramic slurry comprises ceramic formula powder, photo-curable resin systems and additives. The photo-curable 3D printing aluminum-base ceramic slurry and the method have the advantages that the photo-curable 3D printing aluminum-base ceramic slurry is high in solid phase content, low in viscosity and applicable to photo-curable 3D printing photo-polymerization, the problems of high viscosity and poor flowability of existing slurry for photo-curable 3D printing ceramics, easiness in agglomerating ceramic particles in the existing slurry, uneven dispersion of the ceramic particles, low solid phase contents and the like can be solved, and application of photo-curable 3D printing to ceramic precision components can be expanded.

Description

technical field [0001] The invention belongs to the technical field of ceramic core preparation, and in particular relates to a method for preparing an aluminum-based ceramic slurry for photocuring 3D printing and a ceramic core. Background technique [0002] Ceramic core is one of the necessary consumables for casting hollow blades of aero-engines. With the improvement of the thrust-to-weight ratio requirements of aero-engines, it is necessary to design complex cooling passages inside the engine blades and design many holes of various shapes on the surface of the blades to meet the cooling requirements of high-temperature working engine blades. [0003] At present, the most commonly used molding processes are hot die casting and injection molding. The principles of the two are similar, that is, mixing ceramic raw materials with plasticizers, injecting them into ceramic core molds under high temperature through pressure, filling the mold cavity, and obtaining complex shapes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/634C04B35/626C04B35/638C04B38/06B28B1/00B22C1/00B22C9/10B22C9/24B33Y10/00B33Y70/00B33Y80/00
CPCB22C1/00B22C9/10B22C9/24B28B1/001B33Y10/00B33Y70/00B33Y80/00C04B35/10C04B35/62625C04B35/63444C04B35/638C04B38/0645C04B38/068C04B2235/3206C04B2235/3225C04B2235/3227C04B2235/3232C04B2235/3248C04B2235/3418C04B2235/656Y02P10/25
Inventor 李伶王再义王营营刘时浩周欣
Owner SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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