A preparation method of bioactive porous hydroxyapatite/barium titanate composite ceramics based on 3D printing

A hydroxyapatite, 3D printing technology, applied in medical applications, 3D printing technology and bioceramic fields, can solve the problems of low precision, difficulty, simple structure, etc., and achieve the effects of accurate precision, low cost and high molding rate

Active Publication Date: 2021-07-16
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is very difficult for the traditional ceramic technology to manufacture porous ceramics, because it needs to rely on the experience of molds and workers in the preparation of the green body, so the obtained ceramic body has a simple structure and low precision

Method used

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  • A preparation method of bioactive porous hydroxyapatite/barium titanate composite ceramics based on 3D printing
  • A preparation method of bioactive porous hydroxyapatite/barium titanate composite ceramics based on 3D printing
  • A preparation method of bioactive porous hydroxyapatite/barium titanate composite ceramics based on 3D printing

Examples

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example 1

[0028] 1. Use Solidworks, Rhino and other three-dimensional modeling software to design the required porous structure, and calculate its porosity, adjust according to the mechanical simulation results of the finite element analysis software ABAQUS, and obtain the structural model with the best porosity.

[0029] 2. Configure the special slurry required for printing, use photosensitive resin as the solvent, add appropriate amount of barium titanate powder, hydroxyapatite powder, binder, photoinitiator, photopolymerizer in sequence, mix thoroughly and then perform ball milling .

[0030] 3. Use the designed BESK printer to print. First, import the printed model data into the Q3DP software designed with the printer, adjust the parameters and slice the model, and then adjust the substrate to be parallel to the bottom resin tank and determine the best starting position , to ensure that the curing effect of the first layer is good, and start normal printing after confirming that the...

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Abstract

The invention discloses a preparation method of 3D printing bioactive porous hydroxyapatite / barium titanate composite ceramics, belonging to the fields of 3D printing technology, bioceramics, and medical applications. DLP (Digital Light Curing) 3D printing technology has the advantages of fast forming speed, high precision of printed models, and low cost. The present invention is realized by the following software and devices. Use Solidworks to design and optimize the 3D model, import the model into Q3DP software for slicing, prepare the slurry according to a specific ratio and perform ball milling, pour the slurry into the resin tank of the BESK printer to start printing, and put the green body after printing Degreasing and sintering are carried out according to specific parameters in the medium-sized furnace, and finally the porous hydroxyapatite / barium titanate composite bioceramic with excellent mechanical properties, piezoelectric properties and good biocompatibility is obtained.

Description

technical field [0001] The invention relates to 3D printing technology, bioceramics, and medical application fields, in particular, a porous hydroxyapatite / barium titanate bioceramic that meets the needs of the human body is prepared by using DLP (digital light curing) 3D printing technology. Background technique [0002] Bioceramics belongs to the field of front-end scientific research at this stage. Compared with traditional metal implants, bioceramics have better compatibility with human body. At the same time, its Young's modulus is close to the natural bone of the human body, far smaller than that of traditional metal implants, and there will be no obvious stress shielding phenomenon after implantation in the human body. Traditional bioceramics are mainly made of hydroxyapatite, zirconia, lead zirconate titanate and other materials, but each of these materials has certain shortcomings, such as the lack of piezoelectric properties of hydroxyapatite, and the wear and tear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/10C04B35/447C04B35/622B33Y50/00B33Y70/10B33Y10/00C04B38/00
CPCB33Y10/00B33Y50/00B33Y70/00C04B35/447C04B35/622C04B38/00C04B2235/3234C04B2235/6562C04B2235/6567C04B2235/96C04B38/0074
Inventor 曾勇郭晋
Owner BEIJING UNIV OF TECH
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