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A kind of magnesium alloy jet printing paste and preparation method thereof

A magnesium alloy and slurry technology, which is used in metal processing equipment, transportation and packaging, additive processing, etc., can solve the problems that the neutralization effect needs to be improved, and the hydroxyapatite is difficult to achieve, and achieves good consistency and smooth printing dots. The effect of plumping and increasing the degree of dispersion

Active Publication Date: 2019-10-11
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because hydroxyapatite is difficult to dissolve and absorb, its neutralization effect on the local acidic environment caused by the degradation of polylactic acid in the body needs to be improved.

Method used

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  • A kind of magnesium alloy jet printing paste and preparation method thereof
  • A kind of magnesium alloy jet printing paste and preparation method thereof
  • A kind of magnesium alloy jet printing paste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of auxiliary agents: Weigh the solvent, the consistency regulator, the active agent and the thixotropic agent respectively according to the mass ratio of 10:7:2:1. It is first prepared by mixing and stirring, and then shearing with a three-roll machine.

[0034] (2) Polylactic acid modification: Take polylactic acid, nano-hydroxyapatite, and dispersant respectively according to the mass ratio of 3:1:1, stir to make them fully mixed, and use a high-speed centrifuge to centrifuge the prepared solution, and then It is then washed and dried to obtain a composite powder.

[0035] (3) Preparation of magnesium alloy spray printing paste: take magnesium alloy particles (25-38 μm) and modified polylactic acid particles (1-10 μm) and the additives prepared in step (1), according to the mass ratio of 1:1:1 mix. First use a spiral oscillator to carry out mechanical stirring, and then use an ultrasonic cleaner to carry out ultrasonic oscillation, stir evenly, and t...

Embodiment 2

[0037](1) Preparation of auxiliary agents: Weigh the solvent, the consistency regulator, the active agent and the thixotropic agent respectively according to the mass ratio of 10:7:2:1. It is first prepared by mixing and stirring, and then shearing with a three-roll machine.

[0038] (2) Polylactic acid modification: Take polylactic acid, nano-hydroxyapatite, and dispersant respectively according to the mass ratio of 3:1:1, stir to make them fully mixed, and use a high-speed centrifuge to centrifuge the prepared solution, and then It is then washed and dried to obtain a composite powder.

[0039] (3) Preparation of magnesium alloy spray printing paste: take magnesium alloy particles (25-38 μm) and modified polylactic acid particles (1-10 μm) and the additives prepared in step (1), according to the mass ratio of 2:1:1 mix. First use a spiral oscillator to carry out mechanical stirring, and then use an ultrasonic cleaner to carry out ultrasonic oscillation, stir evenly, and th...

Embodiment 3

[0041] (1) Preparation of auxiliary agents: Weigh the solvent, the consistency regulator, the active agent and the thixotropic agent respectively according to the mass ratio of 10:7:2:1. It is first prepared by mixing and stirring, and then shearing with a three-roll machine.

[0042] (2) Polylactic acid modification: Take polylactic acid, nano-hydroxyapatite, and dispersant respectively according to the mass ratio of 3:1:1, stir to make them fully mixed, and use a high-speed centrifuge to centrifuge the prepared solution, and then It is then washed and dried to obtain a composite powder.

[0043] (3) Preparation of magnesium alloy spray printing paste: take magnesium alloy particles (25-38 μm) and modified polylactic acid particles (1-10 μm) and the additives prepared in step (1), according to the mass ratio of 3:1:1 mix. First use a spiral oscillator to carry out mechanical stirring, and then use an ultrasonic cleaner to carry out ultrasonic oscillation, stir evenly, and t...

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Abstract

A magnesium alloy spray printing slurry and a preparation method thereof, the slurry includes 5-50wt% magnesium alloy particles, 10-40% by mass of modified polylactic acid particles and the balance of additives in terms of weight percentage; The auxiliary agent is composed of a solvent, a consistency regulator, an active agent and a thixotropic agent; the magnesium alloy particles are AZ31 magnesium alloy, and the particle size is 25-38 μm. The method is: weigh the solvent, consistency regulator and mix and stir, then use a three-roll machine to shear and add the thixotropic agent and active agent, weigh polylactic acid, nano-hydroxyapatite, solvent and dispersant and mix, weigh magnesium Alloy particles are mixed with modified polylactic acid particles and additives. By adopting the above technical scheme, by adding modified polylactic acid particles with a specific particle size, when the slurry is stressed and slides, a small particle can lubricate the large magnesium alloy particles, thereby improving the printing performance of the slurry.

Description

technical field [0001] The invention relates to the technical field of metal material preparation, in particular to a magnesium alloy jet printing paste and a preparation method thereof. Background technique [0002] In recent years, magnesium and its alloys have gradually become a research hotspot in the field of biodegradable biomaterials. Compared with existing bone tissue engineering materials, magnesium and its alloys have the following advantages: (1) have good biocompatibility with the human body, and magnesium can also promote bone healing, so magnesium can be used as a bone graft in the oral cavity and jaw defects. It has great potential for repair; (2) It can be completely degraded into magnesium ions in the body, which can be absorbed by surrounding body tissues and discharged through body fluids, avoiding secondary operations and reducing the burden on patients; (3) It has suitable physical and mechanical properties and has The density and elastic modulus are si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00C22C23/02B33Y70/00
CPCC22C23/02B33Y70/00B22F1/107B22F1/102
Inventor 周健李赛鹏龚晓花薛烽白晶
Owner SOUTHEAST UNIV