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A method for preparing zinc-magnesium alloy products by 3D gel printing

A magnesium alloy, 3D technology, applied in the field of additive manufacturing, can solve the problems of difficult 3D printing, easy splash and volatilization, low melting point of magnesium, etc., and achieve the effect of high solid content, high strength and high porosity

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

AI Technical Summary

Problems solved by technology

However, due to problems such as low melting point of zinc and magnesium, high activity, and easy splash and volatilization, 3D printing is still a problem.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) The composition of the zinc-magnesium alloy is: Mg15.5wt.%, the rest is Zn, with zinc powder and magnesium powder as raw materials mixed in proportion, the particle size of the zinc powder and magnesium powder is less than 150 μm, will account for 0.5% of the powder mass wt.% zinc naphthenate is dissolved in the organic solvent benzene, and uniformly mixed zinc powder and magnesium powder are added, stirred and dispersed, and vacuum-dried at 40° C. to obtain zinc-magnesium mixed powder;

[0026] (2) Mix the organic monomer acrylamide and the organic solvent methanol according to the volume ratio of 1:5 to prepare a premix solution with an organic monomer concentration of 16.6vol.%, and mix the zinc-magnesium mixed powder with the premix solution according to the volume ratio For 1:1 mixing and stirring, add 0.3wt.% dispersant DISPERBYK-110, mix evenly, and obtain a slurry with a solid content of 50vol.% and a viscosity of 1200Pa.s;

[0027] (3) Put the slurry into t...

Embodiment 2

[0030] (1) The composition of zinc-magnesium alloy is: Mg48.5wt.%, the rest is Zn, take zinc powder and magnesium powder as raw material and mix evenly in proportion, the particle size of described zinc powder and magnesium powder is less than 150 μ m, will account for powder quality 2.5 wt.% of zinc naphthenate is dissolved in toluene, an organic solvent, and uniformly mixed zinc powder and magnesium powder are added, stirred and dispersed, and vacuum-dried at 50° C. to obtain zinc-magnesium mixed powder;

[0031] (2) Mix the organic monomer hydroxyethyl methacrylate (HEMA) and the organic solvent isopropanol according to the volume ratio of 5:1 to prepare a premix solution with an organic monomer concentration of 83.3vol.%, and mix zinc and magnesium Mix and stir the powder and the premixed liquid according to the volume ratio of 4:1, add 4.5wt.% dispersant oleic acid, and mix evenly to obtain a slurry with a solid phase content of 80vol.% and a viscosity of 3600Pa.s;

[003...

Embodiment 3

[0035] (1) The composition of the zinc-magnesium alloy is: Mg25wt.%, the rest is Zn, and the zinc powder and the magnesium powder are mixed evenly in proportion as raw materials, and the particle size of the zinc powder and the magnesium powder is less than 150 μm, which will account for 1.2wt. % of zinc naphthenate is dissolved in the organic solvent xylene, and uniformly mixed zinc powder and magnesium powder are added and stirred to disperse, and vacuum-dried at 45° C. to obtain zinc-magnesium mixed powder;

[0036] (2) The organic monomer methacrylamide and the organic solvent ethanol are mixed evenly according to the volume ratio of 1:1, and the premix solution with the organic monomer concentration of 50vol.% is prepared, and the zinc-magnesium mixed powder and the premix solution are mixed according to the volume Mix and stir at a ratio of 2:1, add 3.0wt.% dispersant lauric acid, and mix evenly to obtain a slurry with a solid phase content of 66.7vol.% and a viscosity of...

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Abstract

The invention provides a method for preparing zinc-magnesium alloy products by 3D gel printing. The zinc-magnesium alloy powder is pretreated first, and then mixed with the organic premix to prepare a slurry that is stable, not easy to settle, not easy to agglomerate, high in solid content, and has the characteristics of shear thinning. It is printed with a 3D gel printer. The printed body is dried and sintered to obtain zinc-magnesium alloy products. The slurry preparation of the present invention uses zinc naphthenate to coat the active zinc and magnesium powders to slow down their oxidation in the slurry preparation, printing process and drying process, and ensure that the sintering process can form an alloy and sinter densely. The method of the present invention can conveniently solve the additive manufacturing of active metal zinc-magnesium alloys that are difficult to prepare by common metal 3D printing methods, so that zinc-magnesium alloy products can be easily prepared by 3D printing; the degradation rate of the prepared zinc-magnesium alloys in body fluids Suitable, porous scaffolds have higher strength and good medical prospects at higher porosity.

Description

technical field [0001] The invention relates to a method for preparing zinc-magnesium alloy products by 3D printing, which belongs to the field of additive manufacturing (3D printing). Background technique [0002] Zinc alloy has low melting point, good fluidity, strong plasticity, and can be remelted and recycled. It has strong corrosion resistance and is not easy to oxidize compared with magnesium alloy. Therefore, zinc alloy plays an important role in the fields of electronic devices and auto parts. In addition, zinc is an important constant element in the human body and plays an important role in human body functions and cell metabolism. Zinc is the most widely distributed trace element in organisms. Almost all cells with vital activities contain zinc. Zinc participates in catalyzing the activities of various enzymes in the body, regulating cell differentiation and gene expression, maintaining the stability of cell membrane structure, and participating in immunity. Fu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/22B22F3/10B22F5/10B22F1/02C22C18/00A61L27/04A61L27/56A61L27/58A61L31/02A61L31/14B33Y10/00B33Y70/10
CPCB22F3/227B22F3/1007B22F3/1021B22F5/10C22C18/00B33Y10/00B33Y70/10A61L27/047A61L27/56A61L27/58A61L31/022A61L31/146A61L31/148A61L2430/06B22F1/102
Inventor 林涛靳浏平邵慧萍李继康韩宇
Owner UNIV OF SCI & TECH BEIJING
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