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A method and device for forming fiber-reinforced ceramic matrix composites based on 3D printing technology

A ceramic matrix composite, 3D printing technology, applied in the field of 3D printing technology and ceramic sintering, can solve the problem of not considering the manufacturing method, and achieve the effect of high strength, high precision and good toughness

Active Publication Date: 2020-08-18
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, this method mainly uses ordinary thermoplastic resins as raw materials for printing, and does not consider the method of printing ceramic slurry to directly make ceramic green body parts.

Method used

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  • A method and device for forming fiber-reinforced ceramic matrix composites based on 3D printing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1), design the 3D model on the computer and convert it into a layered path file and import it into the 3D printer;

[0040] 2) After mixing acrylamide, N,N-methylenebisacrylamide, sodium polyacrylate and photocurable resin with a mass ratio of 24:1:7:40, add dendrite or ethylene glycol solvent, and stir Uniform, prepared into a resin-based premix with a concentration of 40%;

[0041] 3) Prepare ceramic powder according to the requirements of the parts to be printed. The ceramic powder is made of 2μm, 5μm, 40μm, and 100μm ceramic powders according to the performance requirements of the parts. The ceramic powder is made of alumina powder, and add 1% by mass fraction of magnesium oxide as a sintering aid;

[0042] 4), mixing and stirring tetramethylethylenediamine and deionized water evenly, and configuring it as a catalyst with a concentration of 60%;

[0043] 5) Add the powder into the premix liquid, and add the catalyst, fully stir and disperse to prepare a ceramic sl...

Embodiment 2

[0056] 1), design the 3D model on the computer and convert it into a layered path file and import it into the 3D printer;

[0057] 2) After mixing acrylamide, N,N-methylenebisacrylamide, sodium polyacrylate and photocurable resin with a mass ratio of 24:1:7:60, add dendrite or ethylene glycol solvent, and stir Uniform, prepared into a resin-based premix with a concentration of 60%;

[0058] 3) Prepare ceramic powder according to the requirements of the parts to be printed. The ceramic powder is made of 2μm, 5μm, 40μm, and 100μm ceramic powders according to the performance requirements of the parts. The ceramic powder is made of silicon oxide powder and added 5% mass fraction of yttrium oxide as sintering aid;

[0059] 4), mixing and stirring tetramethylethylenediamine and deionized water evenly, and configuring it as a catalyst with a concentration of 75%;

[0060] 5) Add the powder into the premix, and add the catalyst, fully stir and disperse to prepare a ceramic slurry wi...

Embodiment 3

[0073] 1), design the 3D model on the computer and convert it into a layered path file and import it into the 3D printer;

[0074] 2) After mixing acrylamide, N,N-methylenebisacrylamide, sodium polyacrylate and photocurable resin with a mass ratio of 24:1:7:50, add dendrite or ethylene glycol solvent, and stir Uniform, prepared into a resin-based premix with a concentration of 50%;

[0075] 3) Prepare ceramic powder according to the requirements of the parts to be printed. The ceramic powder is made of 2μm, 5μm, 40μm, and 100μm ceramic powders according to the performance requirements of the parts. The ceramic powder is made of silicon carbide powder and added 3% by mass fraction of magnesium oxide as a sintering aid;

[0076] 4), tetramethylethylenediamine and deionized water were mixed and stirred evenly, and configured as a catalyst with a concentration of 67%;

[0077] 5) Add the powder into the premix, and add the catalyst, fully stir and disperse to prepare a ceramic s...

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Abstract

The invention relates to a method for forming a fiber-reinforced ceramic-based composite material based on a 3D (three dimensional) printing technology. 3D printing and forming of ceramic slurry are realized by the 3D printing technology and a fiber-reinforced composite material technology. Before printing, the ceramic slurry containing a catalyst, resin, a monomer and a crosslinking agent and an initiator with a certain concentration are prepared and supplied to a main printing head and a secondary printing head correspondingly, and an ultraviolet source is opened. During printing, the main printing head and the secondary printing head move according to cross-section data, the ceramic slurry and the reinforced fiber are extruded from the main printing head, the initiator is sprayed from the secondary printing head and covers the surface of the ceramic slurry, and the ceramic slurry is solidified and formed under the double actions of ultraviolet irradiation and the initiator, thereby printing is completed to obtain a ceramic green body, and the ceramic green body is degreased and sintered to obtain a ceramic part. By adoption of the method, a ceramic-based composite material part with high toughness, high strength and high precision can be obtained, and rapid manufacturing of the fiber reinforced ceramic-based composite material with a complex structure can be realized.

Description

technical field [0001] The invention belongs to the fields of 3D printing technology and ceramic sintering technology, and specifically relates to a method and device for forming a fiber-reinforced ceramic matrix composite material based on 3D printing technology. Background technique [0002] 3D printing technology is an advanced manufacturing technology developed in the late 1980s. It can quickly manufacture samples, molds or models of new products directly based on product design data, greatly shortening the product processing cycle and reducing the cost of development. It has a positive role in promoting enterprise product innovation and improving product competitiveness. Modern ceramics are widely used due to their superior optical, electrical, thermal, magnetic, and mechanical properties, as well as high temperature resistance, corrosion resistance, radiation resistance, high strength, high modulus, high hardness, low density, and small thermal expansion coefficient. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/82C04B35/80C04B35/71C04B35/10C04B35/14C04B35/565B28B1/00B28B11/24B33Y70/00B33Y10/00
CPCB28B1/001B28B11/243B33Y10/00B33Y70/00C04B35/10C04B35/14C04B35/565C04B35/573C04B35/71C04B35/803C04B35/806C04B35/82C04B2235/3206C04B2235/3225C04B2235/48C04B2235/5208C04B2235/5212C04B2235/5216C04B2235/5248
Inventor 鲁中良夏园林曹继伟卢秉恒李涤尘
Owner XI AN JIAOTONG UNIV
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