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Preparation of ceramic slurry for 3D printing, and 3D printing photocuring molding method thereof

A technology of ceramic slurry and 3D printing, applied in the direction of additive processing, etc., can solve the problems of long curing time of ceramic slurry, high shrinkage rate of ceramic products, easy cracks or deformation, etc., achieve deep curing depth and shorten printing cycle , spreading fine and no bubble effect

Pending Publication Date: 2021-02-23
上海魅湃实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing ceramic slurry has a low powder loading of the slurry, resulting in high shrinkage of the final ceramic product, which is prone to cracks or deformation; and the curing time of the ceramic slurry is long and the molding cycle is long

Method used

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  • Preparation of ceramic slurry for 3D printing, and 3D printing photocuring molding method thereof
  • Preparation of ceramic slurry for 3D printing, and 3D printing photocuring molding method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A ceramic slurry for 3D printing, comprising the following components: 780g of ceramic powder, and 220g of organic mixture.

[0030] In the above formula, the ceramic powder is alumina powder, zirconia powder or silicon dioxide powder.

[0031] The organic mixture includes the following components: 370g of photosensitive resin premix, 1.5g of photoinitiator, 5g of dispersant and 50g of polyethylene glycol.

[0032] Wherein, the photosensitive resin premix is ​​1,6-hexanediol diacrylate (HDDA), dipentaerythritol hexaacrylate (DPHA) and ethoxylated trimethylolpropane triacrylate ( 3EOTMPTA) mixture; photoinitiator is 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO); dispersant is acrylic block copolymer.

[0033] The preparation method of ceramic slurry for above-mentioned 3D printing, such as figure 1 shown, including the following steps:

[0034] S1. Preparation of organic mixture: Stir and mix the photosensitive resin premix, photoinitiator, dispersant and polye...

Embodiment 2

[0045] A ceramic slurry for 3D printing, comprising the following components: 750g of ceramic powder, and 250g of organic mixture.

[0046] In the above formula, the ceramic powder is alumina powder, zirconia powder or silicon dioxide powder.

[0047] The organic mixture includes the following components: 350 g of photosensitive resin premix, 0.5 g of photoinitiator, 8 g of dispersant and 105 g of polyethylene glycol.

[0048] Wherein, the photosensitive resin premix is ​​1,6-hexanediol diacrylate (HDDA), dipentaerythritol hexaacrylate (DPHA) and ethoxylated trimethylolpropane triacrylate ( 3EOTMPTA) mixture; All the other components are identical to Example 1.

[0049] The preparation method of the ceramic slurry for above-mentioned 3D printing comprises the following steps:

[0050] S1. Preparation of organic mixture: Stir and mix the photosensitive resin premix, photoinitiator, dispersant and polyethylene glycol according to a certain ratio for 20-30 minutes, so that all ...

Embodiment 3

[0061] A ceramic slurry for 3D printing, comprising the following components: 800g of ceramic powder, and 200g of organic mixture.

[0062] In the above formula, the ceramic powder is alumina powder, zirconia powder or silicon dioxide powder.

[0063] The organic mixture includes the following components: 410g of photosensitive resin premix, 3.6g of photoinitiator, 12g of dispersant and 180g of polyethylene glycol.

[0064] Wherein, the photosensitive resin premix is ​​1,6-hexanediol diacrylate (HDDA), dipentaerythritol hexaacrylate (DPHA) and ethoxylated trimethylolpropane triacrylate ( 3EOTMPTA) mixture; All the other components are identical to Example 1.

[0065] The preparation method of the ceramic slurry for above-mentioned 3D printing comprises the following steps:

[0066] S1. Preparation of organic mixture: Stir and mix the photosensitive resin premix, photoinitiator, dispersant and polyethylene glycol according to a certain ratio for 20-30 minutes, so that all com...

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Abstract

The invention discloses ceramic slurry for 3D printing. The ceramic slurry comprises the following components in percentage by mass: 75-82% of ceramic powder and 18-25% of an organic matter mixture, wherein the ceramic powder is aluminum oxide powder, zirconium oxide powder or silicon dioxide powder, and the organic matter mixture comprises the following components in parts by mass: 70-90 parts ofa photosensitive resin pre-mixture, 0.1-1 part of a photoinitiator, 1-3 parts of a dispersing agent and 5-40 parts of polyethylene glycol. The ceramic slurry for 3D printing is uniform in dispersion,high in powder loading capacity, short in curing time and more environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of 3D printing ceramic materials, in particular to a preparation of ceramic slurry for 3D printing and a 3D printing photocuring molding method thereof. Background technique [0002] 3D printing technology is a solid rapid prototyping manufacturing technology. It adopts the discrete-accumulation principle and integrates the advantages of computer graphics processing, digital information and control, opto-mechanical technology and material technology. Through the accumulation of different graphics layer by layer , and finally form a three-dimensional object. With the development and application of 3D printing technology, 3D printing materials have become one of the key factors limiting the future direction of 3D printing technology. To a certain extent, the development of materials determines whether 3D printing can be more widely used. At present, 3D printing materials mainly include polymer materials, meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/14C04B35/48C04B35/622C04B35/632B33Y10/00B33Y70/10
CPCC04B35/10C04B35/48C04B35/14C04B35/622C04B35/632B33Y70/00B33Y10/00C04B2235/6026C04B2235/606C04B2235/656C04B2235/6562C04B2235/6567C04B2235/77
Inventor 李宏书
Owner 上海魅湃实业有限公司
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