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Ceramic pulp for photo-curable 3D printing and preparation method and application of ceramic pulp

A ceramic slurry, 3D printing technology, applied in ceramic molding machines, manufacturing tools, additive processing, etc., can solve the problems of unsuccessfully preparing high-density ceramic parts, and achieve high-density effects

Active Publication Date: 2019-12-31
SHENZHEN RES INST CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that although the existing research has prepared a slurry with a high solid content and a viscosity that meets the requirements, many documents have not successfully prepared high-density ceramic parts. The density of the ceramics prepared by the above ceramic slurry is average <98%, and most studies focus on the preparation and rheological properties of slurry, or the control of parameters in the molding process

Method used

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  • Ceramic pulp for photo-curable 3D printing and preparation method and application of ceramic pulp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take bisphenol A epoxy acrylate (BAEA), trimethylolpropane triacrylate (TMPTA), tripropylene glycol diacrylate (TPGDA), isobornyl methacrylate (IBMA), initiator diphenyl (2,4,6-Trimethylbenzoyl)phosphine oxide (TPO), stirring and defoaming to obtain a premix, adding powdered ZrO 2 , PVP mixed evenly to obtain ceramic slurry,

[0033] The addition amount of each component in the ceramic slurry is as follows:

[0034] BAEA: 2.00g

[0035] TMPTA: 2.00g

[0036] TPGDA: 3.00g

[0037] IBMA: 3.00g

[0038] TPO: 0.2000g..

[0039] ZrO 2 : 30.0000g

[0040] PVP: 0.1500g

[0041] The slurry obtained in Example 1 was subjected to a sedimentation test and a viscosity test. As a result, it was found that the slurry did not settle significantly after standing for 7 days, indicating that the slurry had better stability. Viscosity test finds that the slurry in embodiment 1 is 10s at shear rate -1 , the viscosity is 16.85Pa·s, which is lower than that without dispersant.

Embodiment 2

[0046] Take bisphenol A epoxy acrylate (BAEA), trimethylolpropane triacrylate (TMPTA), tripropylene glycol diacrylate (TPGDA), isobornyl methacrylate (IBMA), initiator diphenyl (2,4,6-Trimethylbenzoyl)phosphine oxide (TPO), stirring and defoaming to obtain a premix, adding powdered ZrO 2 , PVP mixed evenly to obtain ceramic slurry,

[0047] The addition amount of each component in the ceramic slurry is as follows:

[0048]

[0049] Carry out viscosity test to the slurry gained in embodiment 2, be 10s at shear rate -1 At the time, the slurry viscosity was 28.28Pa·s, slightly higher than the slurry viscosity in Example 1.

Embodiment 3

[0055] Take bisphenol A epoxy acrylate (BAEA), trimethylolpropane triacrylate (TMPTA), tripropylene glycol diacrylate (TPGDA), isobornyl methacrylate (IBMA), diphenyl (2 , 4,6-trimethylbenzoyl) phosphine oxide (TPO) was stirred and defoamed to obtain a premix, and powder ZrO was added to the premix 2 , PVP and mix to obtain ceramic slurry.

[0056] The addition of each component in the ceramic slurry is as follows: the solid content is 70wt%

[0057]

[0058] Carry out viscosity test to the slurry gained in embodiment 3, be 10s at shear rate -1 , the slurry viscosity was 12.33Pa·s.

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Abstract

The invention discloses ceramic pulp for photo-curable 3D printing and a preparation method and application of the ceramic pulp. The ceramic pulp includes ceramic powder, photo-curable resin, a photoinitiator and a dispersant, wherein the photo-curable resin comprises the components: in percent by mass, 10-60% of bisphenol A epoxy acrylate, 10-60% of trimethylolpropane triacrylate, 10-60% of tripropylene glycol diacrylate and 10-60% of isobornyl methacrylate. The rheological performance of the slurry can be adjusted through selection of reactive diluents with different functionalities and adjustment of the ratio of the diluents, needs of light curing molding can be met by the slurry, and degreasing and sintering are performed on a molded sample so as to obtain a high-density zirconia ceramic product with a relative density of up to 98.8%.

Description

technical field [0001] The invention relates to a ceramic slurry for photocuring 3D printing and a preparation method and application thereof, belonging to the field of photocuring 3D printing. Background technique [0002] Ceramics have the advantages of high strength, corrosion resistance, and friction resistance, and can play an important role in aerospace and other fields. However, due to its inherent characteristics of high hardness and poor toughness, the use of traditional molding methods to manufacture ceramic parts with complex structures has high processing costs and difficulty in ensuring precision. The use of additive manufacturing technology is not limited by traditional processing techniques, and complex structural ceramic parts can be rapidly manufactured without molds, which has great potential in opening up the application of advanced structural ceramics. Light-curing molding technology (SL) is a kind of 3D printing technology. The first step of light-curin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622B28B1/00B33Y70/00B33Y10/00
CPCB28B1/001B33Y70/00C04B35/48C04B35/622B33Y10/00C04B2235/5445C04B2235/6562C04B2235/6565C04B2235/48C04B2235/6026
Inventor 刘绍军李青刘耀蔡伟金石原
Owner SHENZHEN RES INST CENT SOUTH UNIV
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