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Preparation method of high-adhesion ceramic slurry for DLP photocuring 3D printing

A technology of ceramic slurry and adhesion performance, applied in the field of ceramic 3D printing, can solve problems such as optimization and improvement of the adhesion performance of ceramic slurry, and achieve the effect of promoting application and promotion, improving printing stability and efficiency, and wide application range.

Pending Publication Date: 2022-04-08
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent also does not optimize and improve the adhesion performance of the ceramic slurry

Method used

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  • Preparation method of high-adhesion ceramic slurry for DLP photocuring 3D printing
  • Preparation method of high-adhesion ceramic slurry for DLP photocuring 3D printing
  • Preparation method of high-adhesion ceramic slurry for DLP photocuring 3D printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method for a high-adhesion performance ceramic slurry for DLP photocuring 3D printing, comprising the following steps:

[0026] 1) Dry the alumina ceramic powder at 120°C for 12 hours, grind it, and sieve it;

[0027] 2) 50vol% HDDA, 30vol% IBOA (isobornyl acrylate) and 20vol% TMP3EOTA (ethoxylated trimethylolpropane triacrylate) of various UV photocurable monomers are configured into a UV photocurable premix, and stirred evenly;

[0028] 3) Add BYK111 dispersant accounting for 2wt% of the premix to the UV light-curing premix in 2) and stir evenly, then add the sieved ceramic powder in 1), and continue to stir at 300 rpm for 30 minutes to obtain a ceramic slurry;

[0029] 4) Transfer the ceramic slurry in 3) to a ball mill tank, and carry out planetary ball milling at 400 rpm for 12 hours to obtain a uniformly dispersed ceramic slurry, and the mass ratio of the ball mill to the ceramic slurry is 2 to 1;

[0030] 5) Vacuum defoaming the ceramic slurry in 4...

Embodiment 2

[0033] A preparation method for a high-adhesion performance ceramic slurry for DLP photocuring 3D printing, comprising the following steps:

[0034] 1) Dry the zirconia ceramic powder at 130°C for 24 hours, grind it, and sieve it;

[0035] 2) Various UV photocurable monomers 50vol% HDDA (hexanediol acrylate), 20vol% EOEOEA (ethoxy ethoxy ethyl acrylate) and 30vol% PPTTA (ethoxylated pentaerythritol tetraacrylate) are configured into UV light curing premix, stir evenly;

[0036] 3) Add BYK180 dispersant accounting for 3wt% of the premix to the UV light-curing premix in 2) and stir evenly, then add the sieved ceramic powder in 1), and continue to stir at 400 rpm for 50 minutes to obtain a ceramic slurry;

[0037] 4) Transfer the ceramic slurry in 3) to a ball mill tank, and perform planetary ball milling at 350 rpm for 24 hours to obtain a uniformly dispersed ceramic slurry, and the mass ratio of the ball mill to the ceramic slurry is 2 to 1;

[0038] 5) Vacuum defoaming the c...

Embodiment 3

[0041] A preparation method for a high-adhesion performance ceramic slurry for DLP photocuring 3D printing, comprising the following steps:

[0042] 1) Dry the alumina ceramic powder at 120°C for 24 hours, grind it, and sieve it;

[0043] 2) 50vol% HDDA, 25vol% ACMO (acryloyl morpholine) and 25vol% TMP3EOTA (ethoxylated trimethylolpropane triacrylate) of various UV photocurable monomers are configured into a UV photocurable premix, and stirred evenly;

[0044]3) Add BYK163 dispersant accounting for 4wt% of the premix to the UV light-curing premix in 2) and stir evenly, then add the sieved ceramic powder in 1), and continue to stir at 400 rpm for 60 minutes to obtain a ceramic slurry;

[0045] 4) Transfer the ceramic slurry in 3) to a ball mill tank, and carry out planetary ball milling at 300 rpm for 15 hours to obtain a uniformly dispersed ceramic slurry, and the mass ratio of the ball mill to the ceramic slurry is 1.5 to 1;

[0046] 5) Vacuum defoaming the ceramic slurry in...

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Abstract

The invention relates to the technical field of ceramic 3D printing, in particular to a preparation method of high-adhesion ceramic slurry for DLP photocuring 3D printing, which comprises the following steps: proportionally preparing UV photocuring monomers containing large-volume side chains or ethyoxyl groups into a UV photocuring premixed solution, and uniformly stirring; a dispersing agent is added into the UV photocuring premixed liquid, then ceramic powder is added, and ceramic slurry is obtained; carrying out ball milling on the ceramic slurry; and carrying out vacuum defoaming on the ball-milled ceramic slurry. According to the preparation method, by adding the UV photocuring monomer containing a large-volume side chain or an ethyoxyl group, the shrinkage rate in the photocuring process is reduced, the adhesion performance of the ceramic slurry to a printing platform base material in the DLP photocuring 3D printing process is improved, and the printing stability and efficiency are greatly improved; the printing success rate is increased by 80% or above compared with that of a traditional UV photocuring slurry system, and application and popularization of the DLP ceramic photocuring 3D printing technology are promoted.

Description

technical field [0001] The invention relates to the technical field of ceramic 3D printing, in particular to a method for preparing a high-adhesive ceramic slurry for DLP photocuring 3D printing. Background technique [0002] Ceramic materials have excellent performance. With the development of modern industry, the demand for processing and forming ceramic devices with irregular sizes is increasing. However, the hard and brittle nature of ceramic materials brings difficulties in processing. Traditional colloidal molding methods such as ceramic dry pressing molding, gel injection molding, grouting molding, and tape casting molding are difficult to meet the processing needs of complex-shaped ceramic devices. At present, the development of additive manufacturing (Additive Manufacturing) technology (also known as 3D printing technology) has greatly reduced the processing difficulty of ceramic devices with complex shapes. Among them, stereolithography 3D printing technology is s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/185C04B35/18C04B35/14C04B35/563C04B35/565C04B35/584C04B35/632C04B35/634B33Y10/00B33Y70/10
Inventor 徐晓虹周士翔吴建锋张亚祥
Owner WUHAN UNIV OF TECH
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