Method for 3D printing of high-solid-content low-temperature co-fired alumina ceramic complex structure

A kind of alumina ceramics, 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of high-speed, high-precision direct-write 3D printing, difficult long-term storage, poor slurry stability, etc., and achieve low sintering shrinkage , uniform shrinkage and reduced shrinkage

Active Publication Date: 2021-05-07
HARBIN INST OF TECH
View PDF18 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem that the pH of the slurry needs to be adjusted for the existing high-solid-content alumina ceramic slurry, and the stability of the prepared slurry is poor, and it is difficult to store fo

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for 3D printing of high-solid-content low-temperature co-fired alumina ceramic complex structure
  • Method for 3D printing of high-solid-content low-temperature co-fired alumina ceramic complex structure
  • Method for 3D printing of high-solid-content low-temperature co-fired alumina ceramic complex structure

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029]DETAILED DESCRIPTION OF THE INVENTION A method of 3D printing high-solid phase content cryogenic co-calcitogenic ceramic complex structure, which is carried out as follows:

[0030]First, weigh:

[0031]According to the mass parts, 4 parts ~ 8 parts of solvent, 0.5 parts ~ 1 part dispersant, 0.5 parts ~ 1 surfactant, 0.5 parts ~ 1 parts, 0.5 parts ~ 5 parts of diluent, 2 parts ~ 4 varied agents, 60 parts to 88 parts of alumina powder, 1 part ~ 20 parts of glass powder and 300 parts to 500 parts of anhydrous ethanol;

[0032]Second, the organic gum is prepared:

[0033]4 parts ~ 8 parts of solvent, 0.5 parts to 1 parts of dispersing agent and 0.5 parts to 1 part of surfactant were mixed and stirred uniform, then 0.5 parts to 1 part of the binder, and at a temperature of 50 ° C to 90 ° C Under conditions, heating was stirred for 2 h to 4.5 h, and then mixed with vacuum deterination and mixed, then 0.5 parts ~ 5 parts of the diluent with 2 parts to 4 parts of the thixotropic agent, and the m...

Example Embodiment

[0049]DETAILED DESCRIPTION OF THE INVENTION Different: The present embodiment is different from that of the specific embodiment: the solvent described in step one or several mixtures of pine oil alcohol, ethyl acetate, butyl acetate; step one The dispersant is Evka 110; the surfactant described in the step one is a curved drawn; the adhesive described in the step one is ethylcellulose, methylcellulose, hydroxyethyl cellulose or Polyethylene alcohol isoided; the diluent described in the step one is N-ethylpyrrolidone, diluent BYK164 or diluent 4300; the thixotropic agent described in the step one is castor oil; the oxidation described in step one The aluminum powder is a spherical particle having a particle diameter of 200 nm to 10 μm; the glass powder described in the step one is a spherical particle having a particle diameter of 500 nm to 10 μm. Other as the specific embodiment.

Example Embodiment

[0050]DETAILED DESCRIPTION OF THE INVENTION Third: The present embodiment is different from one or two of the specific embodiment: the vacuum dead stirring mixing mixing as described in step i is specifically 500r / min ~ 2000R / min and Under the conditions of the vacuum of 30 kPa to 50 kPa, the vacuum is mixed for 5 min to 20 min. Others are the same as those of the specific embodiments.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Storage modulusaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for 3D printing of an aluminum oxide ceramic complex structure and discloses a method for 3D printing of a high-solid-content low-temperature co-fired aluminum oxide ceramic complex structure. The invention aims to solve the problems that the pH value of existing high-solid-phase-content aluminum oxide ceramic slurry needs to be adjusted, the prepared slurry is poor in stability and difficult to store for a long time, and high-speed and high-precision direct-writing type 3D printing is difficult to achieve. The method comprises the following steps: 1, weighing; 2, preparation of an organic colloid; 3, mixing of alumina powder and ceramic glass powder; 4, preparation of slurry; 5, heating for 3D printing; and 6, drying, glue discharging and sintering. The method is used for 3D printing of the high-solid-content low-temperature co-fired aluminum oxide ceramic complex structure.

Description

technical field [0001] The invention relates to a method for 3D printing complex structures of alumina ceramics. Background technique [0002] Direct writing 3D printing low-temperature co-fired alumina ceramics requires low and controllable sintering shrinkage. Therefore, the green body is required to have high solid content and low viscosity. The ceramic slurry with high solid phase content prepared by the conventional method needs to adjust the pH of the slurry, the process is complex, involves acid and alkali and other environmentally unfriendly materials, and the prepared slurry has poor stability and is difficult to store for a long time. If the viscosity of the slurry is too high, the extrusion speed of the slurry is too slow, which limits the speed of 3D printing; if the viscosity of the slurry is too small, the fluidity of the slurry during the molding process is high, and the molding accuracy is low. Writing 3D printing. Contents of the invention [0003] The p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B35/10C04B35/622C04B35/638B33Y10/00B33Y70/10
CPCB33Y10/00B33Y70/10C04B35/10C04B35/622C04B35/638C04B2235/36C04B2235/6026C04B2235/6562C04B2235/6567
Inventor 杨治华周国相贾德昌周玉
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap