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Preparation method of layered ceramic-based composite material

A composite material and ceramic-based technology, which is applied in the field of preparation of layered ceramic-based composite materials, can solve problems such as low toughness, poor reliability, and unsatisfactory performance, and achieve the effects of improved toughness, easy operation, and reduced stress concentration

Active Publication Date: 2018-07-13
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the low toughness and poor reliability of ceramic materials at the present stage, which cannot meet the needs of modern industrial sectors for high-performance ceramic matrix composite materials, and further provide a preparation method for preparing layered ceramic matrix composite materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0021] A preparation method for preparing a layered ceramic matrix composite material, comprising the steps of:

[0022] S1: Weigh EPTA, UDPA, and n-octanol according to mass fraction, and the ratio is 25-30%: 35-40%: 30-35%, and mix them evenly to obtain a premix, then weigh ceramic materials according to mass percentage and add them to In the premix liquid, and mix uniformly to obtain ceramic slurry;

[0023] S2: Put the uniformly stirred ceramic slurry into an ultrasonic disperser for ultrasonic dispersion for 10-15 minutes, then put the ultrasonically dispersed ceramic slurry into a plastic tank, and ball mill it at a speed of 350-400r / min for 1.5 ~2h;

[0024] S3: Take out the ball-milled ceramic slurry and place it on the 3D printer platform, turn the 3D printer platform to make the ceramic slurry pass through the scraper and become a flat slurry film, then lower the 3D printer platform and use ultraviolet light at 50-80mJ / cm 2 The energy density is cured for 30-80s ...

specific Embodiment approach 2

[0034] Embodiment 2: The difference between this embodiment and Embodiment 1 is that EPTA, UDPA, and n-octanol are weighed by mass fraction in the layered ceramic matrix composite material prepared by photocuring technology, and the ratio is 30%: 40%: 30%, and mix the premix evenly.

specific Embodiment approach 3

[0035] Embodiment 3: This embodiment differs from Embodiments 1 to 2 in that the mass fraction of silicon nitride ceramic particles in the slurry is 50-70% after the solid phase content of the ceramic particles is converted by mass percentage.

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Abstract

The invention discloses a preparation method of a layered ceramic-based composite material. The preparation method comprises the following steps: S1, weighing EPTA, UDPA and n-octanol according to themass fraction, mixing, then putting the mixture into an ultrasonic disperser for ultrasonic dispersion, then taking out ball-milled ceramic slurry, placing on a 3D printer platform, rotating the 3D printer platform to turn the ceramic slurry to smooth slurry film after the ceramic slurry passes through a scraper, then curing, and repeating the step S3 until a needed ceramic blank is obtained; then performing vacuum degreasing and air degreasing, and finally sintering under atmospheric pressure to obtain the layered ceramic-based composite material. The preparation method has the advantages ofbeing simple in preparation process, controllable on technology, convenient to adjust a material system, capable of directly preparing the layered ceramic and gradient ceramic with a one-step methodand suitable for batch production. The preparation method is suitable for preparation of ceramic-based composite materials such as the existing nitride ceramic.

Description

technical field [0001] The invention relates to a method for preparing a layered ceramic matrix composite material by adopting photocuring technology. Background technique [0002] With the rapid development of modern science and technology, various industrial sectors such as machinery manufacturing, electronic appliances, manned spaceflight, new clean energy, and fine chemicals have put forward more stringent requirements on the performance of emerging materials such as corrosion resistance, wear resistance, and high temperature resistance. requirements to meet the needs of related industries for new materials. Therefore, ceramic materials with excellent mechanical properties, high chemical stability, and corrosion resistance have attracted increasing attention. However, the inherent high brittleness of ceramic materials limits the performance of its related properties. Therefore, improving the brittleness of ceramic materials and improving the reliability of ceramic mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/584C04B35/583C04B35/622C04B35/638B33Y10/00B33Y80/00
CPCB33Y10/00B33Y80/00C04B35/583C04B35/584C04B35/622C04B35/638C04B2235/6026C04B2235/6562C04B2235/6567C04B2235/658
Inventor 伍尚华田卓杨玉平
Owner GUANGDONG UNIV OF TECH
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