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A composite transparent film, its preparation method and continuous light curing 3D printing ceramic method based thereon

A 3D printing and light curing technology, applied in the field of 3D printing, can solve the problems of decreased light source penetration, affecting light transmittance, affecting printing quality, etc., to reduce temperature, improve printing accuracy, and reduce costs.

Active Publication Date: 2022-08-05
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The patent application number 201910090004.6 discloses a continuous surface exposure ceramic 3D printing device and its working method, which uses a composite oxygen-enriched membrane to form a dead zone in the ceramic slurry, but the composite oxygen-enriched membrane used The micro-holes in the PET porous film will seriously affect the light transmittance, thus resulting in a decrease in the light source penetration and affecting the printing quality

Method used

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  • A composite transparent film, its preparation method and continuous light curing 3D printing ceramic method based thereon
  • A composite transparent film, its preparation method and continuous light curing 3D printing ceramic method based thereon
  • A composite transparent film, its preparation method and continuous light curing 3D printing ceramic method based thereon

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Experimental program
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Effect test

Embodiment 1

[0057] ① Take spherical SiO with a particle size of 200 nm 2 Granules with Dow Corning PDMS Master Mix, SiO 2 The mass ratio is 20%, and manual stirring is carried out at 200r / min for 2min;

[0058] ②Put the above mixed solution into Songneng DL-3150 ultrasonic cleaning machine and mix for 15min;

[0059] ③ After standing to cool, add PDMS curing agent, the mass ratio of curing agent and PDMS premix is ​​1 / 10, and stir manually at 200r / min for 3min;

[0060] ④Stand at 4℃ for 24h until there are no bubbles at all;

[0061] ⑤Using Jingyan CNC3040 CNC engraving machine to print the mixed solution into a film with the base plate heating at 90°C, the air pressure of 35Kpa, and 320km / h;

[0062] ⑥ Put the printed film in a drying box and heat it at 90°C for 2h;

[0063] ⑦The fully cured SiO 2 / PDMS hybrid film immersion filled with SiO 2 Suspension container in which SiO 2 The particle size is 3 μm, and the pulling machine is used to pull up vertically at a uniform speed of 2...

Embodiment 2

[0070] ①Pour 30vol% ZrO into the storage tank 2 ceramic paste;

[0071] ②Control the bottom of the printing platform to stop 20μm above the composite film;

[0072] ③Introduce cooling oxygen;

[0073] ④Turn on the light source so that the pre-processed image is projected on the composite film;

[0074] ⑤After 10s, control the printing platform to move up at a constant speed of 200mm / h, and at the same time, the projected image is transformed accordingly;

[0075] ⑥ After printing, turn off the light source, pause the printing platform, and stop the circulation of cooling oxygen;

[0076] ⑦Remove the printed ceramic blank and wash off the micro-cured slurry residue with alcohol;

[0077] ⑧Using a UV curing lamp to perform secondary curing on the printed parts, and finally obtain the required ceramic printing blanks;

[0078] ⑨ The required ceramic parts can be obtained after sintering according to the corresponding sintering process.

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Abstract

The invention discloses a composite transparent film, a preparation method thereof and a continuous photocuring 3D printing ceramic method based on the same. The film is made by mixing silica microspheres and PDMS, and a hydrophobic layer is formed on the film with silica. Combined with specific optimized parameters, it is more suitable for continuous photo-curing 3D printing ceramics, realizes continuous printing of ceramic slurry, solves the problem of delamination of printed parts obtained by existing ceramic 3D printing methods, improves printing accuracy and reduces printing time. cost.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a composite transparent film, a preparation method thereof and a continuous light curing 3D printing ceramic method based thereon. Background technique [0002] Ceramic materials have outstanding advantages such as high strength, high hardness, high temperature resistance, oxidation resistance, corrosion resistance, stable chemical properties and light weight, and are widely used in aerospace, biomedical, automotive, electricity, energy, national defense and many other fields. However, the traditional ceramic molding technology faces difficulties in processing (especially the molding of complex shapes and structures), long manufacturing cycle, high production cost, and limitations, which restrict the wider application of ceramic parts. Compared with the traditional ceramic molding process, ceramic 3D printing technology has the following significant advantages: (1) no blank and mold, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/00C08J7/04C08L83/04C08K7/18C04B35/486C04B35/111C04B35/053C04B35/505C04B35/587C04B35/622C04B35/626C04B38/00B33Y70/10B33Y10/00B33Y30/00
CPCC08J7/00C08J7/0427C04B35/486C04B35/111C04B35/053C04B35/505C04B35/587C04B35/622C04B35/6261C04B38/00B33Y70/10B33Y10/00B33Y30/00C04B2235/5445C04B2235/5436C08J2383/04C08K7/18B33Y40/20B33Y80/00C04B2235/6026C04B2235/528B28B1/001B28B11/243B33Y40/10B28B1/008B28B13/0275
Inventor 张广明蒋进兰红波王飞宋道森黄辉李汶海于尊
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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