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A kind of medical biodegradable zinc alloy and preparation method thereof

A zinc alloy and biological technology, applied in the field of materials, can solve problems such as limiting the scope of application, increasing inflammation, and low mechanical properties of polymer materials, so as to avoid infection and relieve pain and trouble.

Inactive Publication Date: 2016-07-13
NORTHEASTERN UNIV LIAONING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The degradable implant materials currently used in clinical practice mainly include polymer materials and bioactive ceramic materials, but these degradable materials still have obvious defects: the mechanical properties of polymer materials are too low, and the acidic environment generated by degradation will increase the degree of inflammation. Possibility; the plasticity and toughness of bioactive ceramics are poor, which limits its application range
However, the mechanical properties of pure zinc are poor, and the strength and plasticity cannot meet the requirements of implant materials.

Method used

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  • A kind of medical biodegradable zinc alloy and preparation method thereof
  • A kind of medical biodegradable zinc alloy and preparation method thereof
  • A kind of medical biodegradable zinc alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The composition contains Mg0.05%, Ag0.5%, Ca0.1%, Mn0.1% by weight percentage, unavoidable impurities ≤ 0.2%, and the balance is Zn;

[0040] Metal zinc, metal magnesium, metal silver, metal calcium and metal manganese are used as raw materials; pure metal zinc is heated to 520±5°C, and metal manganese, metal silver, metal calcium and metal magnesium are added sequentially after the metal zinc is melted, and when all the metal After melting, stir until evenly mixed to obtain alloy melt;

[0041] Cool down the alloy melt to 460±5°C, press hexachloroethane into the alloy melt using a graphite bell jar, the pressed hexachloroethane is 0.2% of the total weight of the alloy melt, and then heat it at 460±5°C Keep warm for 20 minutes;

[0042] After the heat preservation and standing, the alloy melt is cooled to 440±5°C and cast into a mold, and the mold is cooled by water during the casting process to obtain an ingot;

[0043]The ingot is kept at 300°C±5 for 100 minutes, th...

Embodiment 2

[0048] The composition contains Mg1%, Ag0.01%, Ca0.5%, Mn0.01% by weight percentage, unavoidable impurities ≤0.2%, and the balance is Zn;

[0049] Metal zinc, metal magnesium, metal silver, metal calcium and metal manganese are used as raw materials; pure metal zinc is heated to 520±5°C, and metal manganese, metal silver, metal calcium and metal magnesium are added sequentially after the metal zinc is melted, and when all the metal After melting, stir until evenly mixed to obtain alloy melt;

[0050] Cool the alloy melt to 460±5°C, press hexachloroethane into the alloy melt using a graphite bell jar, the pressed hexachloroethane is 0.25% of the total weight of the alloy melt, and then heat the alloy at 460±5°C Keep warm for 10 minutes;

[0051] After the heat preservation and standing, the alloy melt is cooled to 440±5°C and cast into a mold, and the mold is cooled by water during the casting process to obtain an ingot;

[0052] The ingot is kept at 300°C ± 5 for 150 minutes...

Embodiment 3

[0057] The composition contains Mg0.005%, Ag0.1%, Ca0.15%, Mn0.15% by weight percentage, unavoidable impurities ≤ 0.2%, and the balance is Zn;

[0058] Metal zinc, metal magnesium, metal silver, metal calcium and metal manganese are used as raw materials; pure metal zinc is heated to 520±5°C, and metal manganese, metal silver, metal calcium and metal magnesium are added sequentially after the metal zinc is melted, and when all the metal After melting, stir until evenly mixed to obtain alloy melt;

[0059] Cool the alloy melt to 460±5°C, press hexachloroethane into the alloy melt using a graphite bell jar, the pressed hexachloroethane is 0.3% of the total weight of the alloy melt, and then heat the alloy at 460±5°C Keep warm for 20 minutes;

[0060] After the heat preservation and standing, the alloy melt is cooled to 440±5°C and cast into a mold, and the mold is cooled by water during the casting process to obtain an ingot;

[0061] The ingot is kept at 300°C±5 for 200 minut...

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Abstract

A medical biodegradable zinc alloy and its preparation method, which belongs to the field of material technology. The alloy composition contains Mg 0.005~1%, Ag 0.01~0.5%, Ca 0.01~0.5%, Mn 0.01~0.5% by weight, which is inevitable Impurities ≤0.2%, the balance is Zn; the preparation method is: (1) Heat pure metal zinc to 520±5℃, add metal manganese, metal silver, metal calcium and metal magnesium in sequence after melting, and stir until evenly mixed; ( 2) Cool down to 460±5℃, press in hexachloroethane, keep warm and let stand for 10~20min; (3) Keep and cool down to 440±5℃ for casting; (4) Keep at 300℃±5 for 100~200min, heat up to Insulate at 330~360℃ for 3~5 hours, then water cool to normal temperature; (5) Keep at 150~350℃ for 20~40min, then perform high temperature deformation, air cooling to normal temperature; (6) Perform multiple normal temperature deformation-intermediate annealing, and finally Air cool to room temperature. The zinc alloy of the present invention can be used to prepare various degradable medical devices to meet different clinical use requirements.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a medical biodegradable zinc alloy and a preparation method thereof. Background technique [0002] Due to their good mechanical properties and processing properties, metal materials have become widely used implant materials in clinical practice, mainly including pure metals (tantalum, niobium, zirconium, etc.), stainless steel, titanium alloys, cobalt-based alloys, shape memory alloys, precious metals, etc. These materials have good corrosion resistance and can remain stable for a long time after being implanted in the human body; but they also bring some problems, such as the need for secondary surgery to remove; the release of alloy elements may cause potential harm to the human body and other adverse effects. [0003] In order to avoid the problems caused by the above-mentioned implant materials, a technique of using degradable implant materials has been proposed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/00C22F1/16
Inventor 秦高梧王利卿肖驰王欢任玉平李松左良
Owner NORTHEASTERN UNIV LIAONING