Method for preparing ceramic material through ultraviolet light beam synchronous curing assisted direct writing 3D printing

A technology of ceramic materials and ultraviolet light beams, applied in ceramic molding machines, manufacturing tools, additive processing, etc., can solve problems such as uneven curing, cumulative defects, and overexposure of light-assisted direct writing molding processes, and achieve easy promotion, Broad application prospects and low curing shrinkage

Pending Publication Date: 2021-09-17
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a method for preparing ceramic materials by UV beam synchronous curing assisted direct writing 3D printing, which can solve the problems of uneven curing, printing broken wires, local overexposure, and cumulative Defects and other issues

Method used

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  • Method for preparing ceramic material through ultraviolet light beam synchronous curing assisted direct writing 3D printing
  • Method for preparing ceramic material through ultraviolet light beam synchronous curing assisted direct writing 3D printing
  • Method for preparing ceramic material through ultraviolet light beam synchronous curing assisted direct writing 3D printing

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Embodiment 1

[0029] In this embodiment, the method for preparing ceramic materials by direct writing 3D printing assisted by ultraviolet beam synchronous curing is as follows:

[0030] Step 1. Create a simple three-dimensional cube model, slice the three-dimensional model to obtain a series of two-dimensional cross-sectional slices, set the layer height to 0.8mm, fill the pattern with a grid grid structure, and fill the rate to 80%;

[0031] Step 2, pre-preparing the syringe and needle of the dispensing machine containing the slurry, the diameter of the needle is 0.8mm, the slurry is composed of about 80wt% of BTO ceramic base material, about 20wt% of PEGDA photosensitive resin, about 0.6wt% of photoinitiator TPO, About 1.6wt% of triton;

[0032] Step 3. Turn on the moving point light source according to the settings in step 1. The point light source moves synchronously with the printing needle, and the initial curing and finalization are performed synchronously during printing. The single...

Embodiment 2

[0036] In this embodiment, the method for preparing ceramic materials by direct writing 3D printing assisted by ultraviolet beam synchronous curing is as follows:

[0037] Step 1. Create a simple three-dimensional cube model; slice the three-dimensional model to obtain a series of two-dimensional cross-sectional slices, set the layer height to 0.4mm, fill the pattern with a grid grid structure, and fill the rate to 100%;

[0038] Step 2, pre-preparing the syringe and needle of the dispensing machine containing the slurry, the diameter of the needle is 0.8mm, the slurry is composed of about 80wt% of BTO ceramic base material, about 20wt% of PEGDA photosensitive resin, about 0.6wt% of photoinitiator TPO, About 1.6wt% of triton;

[0039] Step 3. Turn on the point light source according to the settings in step 1. The point light source moves synchronously with the printing needle, and the initial curing and finalization are carried out synchronously during printing. The single-lay...

Embodiment 3

[0043] In this embodiment, the method for preparing ceramic materials by direct writing 3D printing assisted by ultraviolet beam synchronous curing is as follows:

[0044] Step 1, establish a simple three-dimensional cube model, slice the three-dimensional model to obtain a series of two-dimensional cross-sectional slices, set the layer height to 0.8mm, fill the pattern to zigzag zigzag, and fill the rate to 50%;

[0045] Step 2, pre-preparing the syringe and needle of the dispensing machine containing the slurry, the diameter of the needle is 0.8mm, the slurry is composed of about 80wt% of BTO ceramic base material, about 20wt% of PEGDA photosensitive resin, about 0.6wt% of photoinitiator TPO, About 1.6wt% of triton;

[0046] Step 3. According to the settings in step 1, turn on the moving point light source. The point light source moves synchronously with the printing needle, and the initial curing and shaping are performed synchronously during printing. The double-layer cros...

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Abstract

The invention relates to a method for preparing a ceramic material through ultraviolet light beam synchronous curing assisted direct writing 3D printing. The method comprises the steps that 1, a three-dimensional model of the ceramic material is established; 2, gas is pushed to extrude slurry by using an air pump; 3, before printing is started, an irradiation point coincides with a beating material extrusion position, during printing, a point light source synchronously moves along with a printing needle, and after single-time printing is completed, a printer stops printing, the needle returns to the original position, an ultraviolet lamp point light source is turned off, and a high-power ultraviolet lamp is turned on for surface exposure till complete curing is achieved; 4, the printer adjusts height parameters according to the height of a specific printing layer, continuously prints one to two layers on the cured printing layer and exposes, and the operation is cycled until printing is completed; and 5, the printed and molded ceramic body is degreased and sintered according to a sintering system. The problems of non-uniform curing, printing wire breakage, local overexposure, accumulative defects and the like in the photo-assisted direct writing forming process can be solved.

Description

technical field [0001] The invention relates to the technical field of ceramic forming technology, and more specifically, relates to a method for preparing ceramic materials by synchronous curing of ultraviolet beams assisted by direct writing 3D printing. Background technique [0002] With the development of modern high-tech industries, many industrial fields have put forward higher requirements for material performance. As an important part of new materials, advanced ceramics are playing an increasingly important role in the national economy. Advanced ceramics, also known as high-performance ceramics, refer to high-purity, ultra-fine artificially synthesized or selected inorganic compounds as raw materials, through composition and structure design and the use of precise stoichiometry and new preparation techniques with excellent performance of ceramics. High hardness, high strength and high wear resistance are the essential characteristics of ceramic materials. With exce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/00B28B11/24C04B35/468C04B35/622B33Y10/00B33Y70/10
CPCB28B1/001B28B11/243C04B35/468C04B35/622B33Y10/00B33Y70/10C04B2235/6026
Inventor 刘凯周枢宇张毓振张庆庆孙华君黄尚宇李天杨李世龙
Owner WUHAN UNIV OF TECH
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