High solid phase content ceramic slurry for photo-curing 3D printing and preparation process of ceramic slurry

A 3D printing, ceramic slurry technology, applied in the field of 3D printing materials, can solve the problems of high content of organic components, poor surface quality, low density of ceramic products, etc., to improve the density, reduce adhesion, improve Effects of layer thickness accuracy and surface quality

Inactive Publication Date: 2017-09-05
NANJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-solid-content ceramic slurry for photocuring 3D printing and its preparation process. The ceramic body prepared by the slurry can be sintered into ceramic products with high density and high surface quality, which solves the problem of The problems existing in the prior art, such as high content of organic components, low density of ceramic products, and poor surface quality, can promote the industrial application of high-quality 3D printed ceramic products with complex structures, so as to solve the above-mentioned problems caused by the prior art. multiple defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Preparation of Photosensitive Ceramic Slurry for Photocuring 3D Printing of High Density Alumina Ceramics

[0014] Surface Modification of Alumina Ceramic Powder Material

[0015] Put 100 parts of superfine alumina powder materials with a maximum particle size of ≤5 μm and d0.5 of 0.7 μm into 5 parts of sodium dodecylsulfonate solution and stir, then dry at 60°C to obtain surface adsorption Modified alumina powder material.

[0016] Preparation of organic liquid phase materials

[0017] Add 0.5 parts of simethicone oil, 2.0 parts of polyethylene glycol, and 0.5 parts of acrylic rheology modifier to 97 parts of epoxy acrylic photosensitive resin in sequence and fully stir and mix to prepare an organic liquid phase material.

[0018] Preparation of Photosensitive Alumina Paste

[0019] Gradually add 75 parts of surface-modified alumina powder materials to 25 parts of premixed organic liquid phase materials, stir and mix in a vacuum mixer for 1.0 hour, and prepare photo...

Embodiment 2

[0021] Preparation of photosensitive ceramic slurry for photocuring 3D printing high-density zirconia ceramics

[0022] Surface modification of zirconia ceramic powder materials

[0023] Dissolve 5 parts of silane coupling agent γ-glycidyl etheroxypropyl trimethoxysilane in a certain amount of water to prepare a solution with a concentration of 10% and a temperature of 50°C; The zirconia powder material with a diameter of 500nm was added to the coupling agent solution, and after being stirred vigorously for 1.5 hours, it was filtered and dried to obtain surface-modified zirconia powder.

[0024] Preparation of organic liquid phase materials

[0025] Add 0.5 parts of simethicone oil, 1.0 parts of ammonium polyacrylate, and 1.0 parts of acrylic acid rheology modifier to 97.5 parts of epoxy acrylic photosensitive resin in sequence, and fully stir and mix to prepare an organic liquid phase material.

[0026] Preparation of Photosensitive Zirconia Ceramic Slurry

[0027] Gradual...

Embodiment 3

[0029] Preparation of photosensitive ceramic slurry for photocuring 3D printing high-density silicon oxide ceramics

[0030] Surface Modification of Silica Ceramic Powder Material

[0031] Dissolve 2 parts of silane coupling agent hexamethyldisiloxane in a certain amount of water to prepare a solution with a concentration of 5% and a temperature of 70°C; oxidize 100 parts of spherical particles with a maximum particle size of ≤5 μm and a d0.5 of 1 μm The silicon powder material is added into the coupling agent solution, stirred vigorously for 1.0 hour, filtered and dried to obtain surface-modified silicon oxide powder.

[0032] Preparation of organic liquid phase materials

[0033] Add 1.0 parts of polydimethylsiloxane, 1.0 parts of polyethylene glycol, and 2.0 parts of acrylic rheology modifier to 96 parts of polyurethane acrylic resin in sequence, and fully stir and mix to prepare an organic liquid phase material.

[0034] Preparation of photosensitive silica paste

[003...

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Abstract

The invention discloses high solid phase content ceramic slurry for photo-curing 3D printing, which comprises 75-90 parts by mass of inorganic ceramic powder and 10-25 parts by mass of organic liquid phase materials. The preparation process of the ceramic slurry comprises the following steps: firstly, carrying out modification treatment on the inorganic ceramic powder, and then adding the inorganic ceramic powder into the premixed organic liquid phase materials so as to be prepared into the high solid phase content ceramic slurry capable of being used for photo-curing 3D printing forming, wherein the modification treatment comprises a physical surface modification process or / and a chemical surface modification process. A ceramic green body prepared from the slurry can be sintered into a ceramic product with high compactness and high surface quality, thereby solving the problems of high contents of organic components, low compactness and poor surface quality of ceramic products, and the like in the prior art.

Description

technical field [0001] The invention relates to the technical field of 3D printing materials, in particular to a high-solid-content ceramic slurry for photocuring 3D printing and a preparation process thereof. Background technique [0002] 3D printing technology (also known as additive manufacturing technology) is a rapid manufacturing technology with broad development prospects, which is based on material accumulation and aims to directly manufacture parts. It is known as a revolution in the manufacturing industry. 3D printing technology is widely used in product prototypes, mold manufacturing, artistic creation, jewelry making and other fields to replace traditional fine processing techniques in these fields. Among other things, the technology has applications in footwear, architecture, engineering and construction, automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, weapons manufacturing, bioengineering, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/48C04B35/14C04B35/565C04B35/632C04B35/634B33Y70/00
CPCB33Y70/00C04B35/10C04B35/14C04B35/48C04B35/565C04B35/632C04B35/634C04B35/63444C04B35/63452C04B35/63456C04B35/63488C04B2235/48C04B2235/6026
Inventor 韦华唐明亮汤兵沈晓冬叶玉秋魏帅飞李启铭李传强
Owner NANJING UNIV OF TECH
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