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Bionic human bone based on 3D printing and manufacturing method thereof

A 3D printing and manufacturing method technology, applied in tissue regeneration, medical science, prosthesis, etc., can solve problems such as slow molding speed, brittle parts, and limited space for adjusting sintering shrinkage rate, and achieve the effect of avoiding cracks and bending

Pending Publication Date: 2021-09-17
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages are: the molding accuracy is lower than that of the SLA process, and the molding speed is relatively slow
Disadvantages: the cost of equipment is very high, toxic gas will be generated during the molding process, and the rough surface of the molding surface needs secondary treatment
Disadvantages: Parts are brittle and easy to break after printing
Traditional bioceramic human bone technology usually uses a single powder to make compact bone materials. The particle size distribution, specific surface area, powder shape and other parameters have been determined, and the adjustment space for the corresponding sintering shrinkage rate is limited.
Therefore, when the co-firing shrinkage ratio is mismatched, it is difficult to achieve effective adjustment through a single powder

Method used

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  • Bionic human bone based on 3D printing and manufacturing method thereof
  • Bionic human bone based on 3D printing and manufacturing method thereof
  • Bionic human bone based on 3D printing and manufacturing method thereof

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Experimental program
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Effect test

Embodiment

[0039] see Figure 5 , the present embodiment provides a bionic human bone manufacturing method based on 3D printing:

[0040] The ceramic raw materials used include: A-type silicon nitride, B-type silicon nitride, sintering aids, and silane coupling agents.

[0041]a) setting the initial ratio of A-type silicon nitride and B-type silicon nitride in the ceramic raw material;

[0042] b) Use a planetary ball mill to mill each component in the ceramic raw material at 350r / min for 6h, and mix them uniformly;

[0043] c) drying at 60°C, and sieving to 100 mesh;

[0044] d) Design the first layer model of the bionic human bone;

[0045] e) adding resin, photoinitiator, and dispersant to the mixed ceramic raw materials to prepare 3D printing slurry, and then 3D printing;

[0046] f) degreasing;

[0047] g) sintering into porcelain at 1800°C to obtain the first layer of ceramic parts, and measuring the shrinkage of the first layer of ceramic parts;

[0048] h) Design the second...

Embodiment 2

[0072] According to the performance results in Table 1 and Table 2, the ratio of A-type silicon nitride and B-type silicon nitride in the first layer of ceramic raw materials was adjusted according to the shrinkage rate of the second layer ceramic part No. 22. The proportion of A-type silicon nitride and B-type silicon nitride in the first layer of ceramic raw materials for preparing bionic human bones is 3.4:6.6, and the corresponding linear shrinkage rate of the obtained first layer of ceramic parts is 22.60%, and the porosity is 27.34%. , The flexural strength is 350.68MPa. The shrinkage ratio of the first layer of ceramic parts and the second layer of ceramic parts is matched, and the joint surface will not bend and crack.

[0073] Bionic human bone embodiment 3

[0074] According to the performance results in Table 1 and Table 2, the ratio of A-type silicon nitride and B-type silicon nitride in the first layer of ceramic raw materials was adjusted according to the shrink...

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Abstract

The invention discloses a bionic human bone based on 3D printing and a manufacturing method thereof, and relates to the technical field of biological ceramic human bone materials. According to the corresponding relation between the proportion of A-type silicon nitride and B-type silicon nitride contained in the ceramic raw materials of the first-layer ceramic piece and the shrinkage rate, the shrinkage rate of the second-layer ceramic piece is matched, and the bionic human bone with the porosity and the bending strength changing in a gradient mode can be manufactured; cracks and bending of a connection interface caused by mismatching of shrinkage rates of the compact bone and the cancellous bone can be effectively avoided; according to the present invention, by using the different particle sizes of the single powder and adopting the mode of compounding the A-type silicon nitride and the B-type silicon nitride, the sample shrinkage rate and the bending strength after sintering can be adjusted, and when the ratio of the A-type silicon nitride to the B-type silicon nitride is a certain value, the bending strength of the sintered sample achieves the peak value;.

Description

technical field [0001] The invention relates to the technical field of bioceramic human bone materials, in particular to a bionic human bone based on 3D printing and a manufacturing method thereof. Background technique [0002] With the continuous development of economy, science and technology and medicine, the average life expectancy continues to increase, and senile osteoarthritis is becoming more and more serious. At the same time, industrial, traffic, sports and other accidents will also cause certain bone trauma, and these problems all affect the quality of human life. The implantation or replacement of bionic human bones can greatly reduce people's pain and improve the quality of life of patients with bone injuries. The currently researched and applied bionic human bone materials mainly include: (1) metal materials such as stainless steel, titanium alloy, cobalt-chromium-molybdenum alloy, etc. Because metal materials have high strength, high toughness and good machin...

Claims

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Application Information

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IPC IPC(8): C04B35/584C04B35/622C04B35/638B33Y70/10B33Y10/00B33Y80/00A61L27/40A61L27/10A61L27/02A61L27/50
CPCC04B35/584C04B35/622C04B35/638B33Y70/10B33Y10/00B33Y80/00A61L27/10A61L27/025A61L27/50A61L2430/02C04B2235/483C04B2235/3217C04B2235/3225C04B2235/3206C04B2235/96C04B2235/9615
Inventor 伍尚华黄生武孙振飞杨平
Owner GUANGDONG UNIV OF TECH
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