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3D printing biological material as well as preparation method and printing method thereof

A biomaterial and 3D printing technology, applied in 3D object support structures, additive manufacturing, manufacturing tools, etc., can solve problems such as poor heat resistance, lack of flexibility and elasticity, poor toughness of polylactic acid, etc., to improve degradation performance and brittleness Large, toughness-enhancing effect

Inactive Publication Date: 2017-02-22
SHENZHEN EXCELLENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the disadvantages of polylactic acid such as poor toughness, lack of flexibility and elasticity, and poor heat resistance limit the further application of PLA as a 3D printing consumable.

Method used

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  • 3D printing biological material as well as preparation method and printing method thereof
  • 3D printing biological material as well as preparation method and printing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A 3D printing biomaterial, the raw material contains the following components by weight percentage:

[0044] Beta-tricalcium phosphate 90%

[0045] Racemic Polylactic Acid 10%

[0046] Prepared by:

[0047] (1) Weighing β-tricalcium phosphate and racemic polylactic acid with a quality of 9g and 1g respectively;

[0048] (2) Add β-tricalcium phosphate into 60mL of chloroform, stir and mix in a constant temperature magnetic stirrer at 30°C for 10min, and the stirring speed is 300rpm;

[0049](3) Adding racemic polylactic acid to the CHCl of the above-mentioned β-tricalcium phosphate 3 In the suspension, continue magnetic stirring at 18°C ​​for 180 minutes to fully dissolve the racemic polylactic acid;

[0050] (4) Adjust the temperature of the constant temperature magnetic stirrer to 60°C, continue magnetic stirring for 180min, and make CHCl 3 Rapid evaporation yields the biological material.

Embodiment 2

[0052] A 3D printing biomaterial, the raw material contains the following components by weight percentage:

[0053] Beta-tricalcium phosphate 45%

[0054] Racemic Polylactic Acid 55%

[0055] Prepared by:

[0056] (1) Take by weighing β-tricalcium phosphate and racemic polylactic acid with a quality of 4.5g and 5.5g respectively;

[0057] (2) Add β-tricalcium phosphate into 40mL of chloroform, stir and mix in a constant temperature magnetic stirrer at 18°C ​​for 30min, and the stirring speed is 800rpm;

[0058] (3) Adding racemic polylactic acid to the CHCl of the above-mentioned β-tricalcium phosphate 3 In the suspension, continue magnetic stirring at 30°C for 60 minutes to fully dissolve the racemic polylactic acid;

[0059] (4) Adjust the temperature of the constant temperature magnetic stirrer to 40°C, continue magnetic stirring for 40min, and make CHCl 3 Rapid evaporation yields the biological material.

Embodiment 3

[0061] A 3D printing biomaterial, the raw material mainly contains the following components by weight percentage:

[0062] Beta-tricalcium phosphate 40%

[0063] Racemic Polylactic Acid 60%

[0064] Prepared by:

[0065] (1) Take by weighing β-tricalcium phosphate and racemic polylactic acid with a quality of 4.0g and 6.0g respectively;

[0066] (2) Add β-tricalcium phosphate into 60mL of chloroform, stir and mix in a constant temperature magnetic stirrer at 20°C for 5min, and the stirring speed is 500rpm;

[0067] (3) Adding racemic polylactic acid to the CHCl of the above-mentioned β-tricalcium phosphate 3 In the suspension, continue magnetic stirring at 25°C for 30 minutes to fully dissolve the racemic polylactic acid;

[0068] (4) Adjust the temperature of the constant temperature magnetic stirrer to 70°C, continue magnetic stirring for 100min, and make CHCl 3 Rapid evaporation yields the biological material.

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Abstract

The invention discloses a 3D printing biological material as well as a preparation method and a printing method thereof. Raw materials for preparing the 3D printing biological material mainly comprise the following components in percentage by weight: 45-95% of beta-tricalcium phosphate and 5-55% of ooly-DL-lactide, wherein the sum of mass percentages of the two raw materials is less than or equal to 100%. By adopting the 3D printing biological material disclosed by the invention, normal-temperature printing can be achieved, the probability that a printing nozzle is blocked can be reduced, the defects that a single-beta-tricalcium phosphate material is high in brittleness can be solved, the toughness of the material can be improved, the degradation property of the material is improved due to addition of polylactic acid, a complex three-dimensional structure can be relatively well printed, and the application range of the 3D printing material can be widened.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a 3D printing biomaterial, a preparation method and a printing method thereof. Background technique [0002] 3D printing technology is a special printing technology, which is based on the spatial data of the model, using metal or powder and other bondable materials, which are stacked through layer-by-layer printing, and finally "print" a three-dimensional object with the same proportion as the model in the computer. Model. 3D printing technology first appeared in the late 1980s, gradually matured after 2010, and quickly became popular all over the world. After entering the Chinese market, it was quickly welcomed by consumers because of its convenient and trendy features. From ordinary cartoon characters, models or artworks such as sand tables, to printing vehicles such as cars and airplanes, and even using human cells to print normal liver tissue, 3D printing appears anywhere ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K3/32B29C64/118B33Y10/00B33Y70/00
CPCC08K3/32B33Y10/00B33Y70/00C08K2003/325
Inventor 张东锋赵小文赖文苏冬冬吴小丽
Owner SHENZHEN EXCELLENT TECH