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Preparing method of zinc magnesium function gradient biological composite

A technology of functionally gradient and composite materials, applied in the field of preparation of functionally gradient biomaterials, can solve the problems of high brittleness of pure zinc, poor tensile strength and elongation, inferior mechanical properties to magnesium, etc., and achieve accurate and detailed data and bonding strength. High, avoids the effect of stress shadowing effect

Active Publication Date: 2017-11-24
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure zinc has high brittleness, poor tensile strength and elongation, and its mechanical properties are not as good as magnesium, so it has not been widely used in the field of medical implant devices.

Method used

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  • Preparing method of zinc magnesium function gradient biological composite
  • Preparing method of zinc magnesium function gradient biological composite
  • Preparing method of zinc magnesium function gradient biological composite

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Experimental program
Comparison scheme
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Embodiment Construction

[0060] Its preparation consumption of the chemical substance material that this method uses is as follows: Take gram, millimeter, milliliter as unit of measurement

[0061] Zinc powder: 200g±0.01g

[0062] Magnesium powder: 100g±0.01g

[0063] HA powder: 100g±0.01g

[0064] Deionized water: H 2 O 3000mL±10mL

[0065] Graphite block: C 500mm×500mm×100mm

[0066] Graphite block: C 200mm×160mm×50mm

[0067] Graphite compact: C 200mm×160mm×50mm

[0068] Graphite paper: C 1000mm×1mm×500mm

[0069] Absolute ethanol: C 2 h 6 O 1000mL±10mL

[0070] Sandpaper: 400 mesh 300mm×0.5mm×200mm

[0071] In step (1), the chemical substances and materials used in the preparation should be selected, and the quality and purity should be controlled:

[0072] Zinc: solid powder 99.99%

[0073] Magnesium: solid powder 99.99%

[0074] Acetone: liquid liquid 99.9%

[0075] Deionized Water: Liquid Liquid 99.9%

[0076] Graphite block: solid block 98.5%

[0077] Graphite spacer: solid blo...

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Abstract

The invention relates to a preparing method of a zinc magnesium function gradient biological composite. Magnesium powder, zinc powder and HA powder are adopted to serve as raw materials, ball milling powder mixing, die filling and vacuum discharge plasma sintering are carried out, and a zinc magnesium composite of two gradient structures is prepared. The preparing method is advanced in technology, data are full and accurate, a prepared zinc magnesium gradient material is high in combination strength on the interface, the debinding phenomenon is avoided, wear resistance and mechanical properties(the crush resistance strength is 293.66MPa, the elasticity modulus is 8.0 GPa, and breaking tenacity is 9.327 MPa.mm<1 / 2>) of all gradient layers are matched with the natural bone, the stress shielding effect is effectively avoided, and the preparing method is an ideal preparing method for a degradable biomedical metal gradient material.

Description

Technical field [0001] The present invention relates to a method for preparing functionally graded biological materials, specifically to a method for preparing a zinc-magnesium alloy layered gradient material and a concentric gradient composite material, and belongs to the technical field of preparation and application of medical biological materials. Background technique [0002] The biomaterials currently used in clinical applications mainly include bioinorganic materials, biopolymer materials, biometallic materials, and biocomposite materials. Medical metal materials have the advantages of strength, plastic toughness, and fatigue resistance, so they are the most widely used in clinical applications. [0003] At present, medical metal materials are often used as long-term implants. However, the generation of metal ions under physiological corrosion can lead to negative problems such as toxic side effects and the "stress shielding" effect caused by excessive elastic modulus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04C22C18/00
CPCC22C1/0483C22C18/00
Inventor 崔泽琴张亚凯李国凯宫殿清王文先程伟丽
Owner TAIYUAN UNIV OF TECH
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