Preparation method of gradient graphene/magnesium composite material

A composite material and graphene technology, applied in medical science, prosthesis, tissue regeneration, etc., can solve the problems of less research on corrosion resistance and mechanical properties of magnesium matrix, avoid delamination and cracks, and improve mechanical properties. Effect

Inactive Publication Date: 2016-11-09
LIAONING UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on how to add graphene to the magnesium matrix to improve the corrosion resistance and mechanical properties of the magnesium matrix.

Method used

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  • Preparation method of gradient graphene/magnesium composite material
  • Preparation method of gradient graphene/magnesium composite material
  • Preparation method of gradient graphene/magnesium composite material

Examples

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Effect test

example 1

[0021] 1. Preparation of graphene / magnesium composite slurry

[0022] In parts by mass, 5 parts of organic monomer hydroxyethyl methacrylate (HEMA) and 1 part of crosslinking agent trimethylolpropane triacrylate (TMPTA) were dissolved in 60.25 parts of n-butanol, and stirred evenly. Then add 1.5 parts of dispersant oleic acid, stir well, then add 27 parts of magnesium powders with a particle size of 60nm and 3 parts of graphene powder with a particle size of 500nm, stir well; add 2 parts of initiator benzoyl peroxide ( BPO) and 0.25 parts of the catalyst N,N dimethylaniline (DMA), and stirred evenly to make a graphene / magnesium composite slurry.

[0023] 2. Centrifugation, gel curing and sintering

[0024] a. Inject the above-mentioned prepared graphene / magnesium multiphase slurry into the inner mold of the centrifuge, and centrifuge for 20min at a speed of 500r / min, so that the graphene and magnesium particles form a continuous gradient distribution;

[0025] b. Put the c...

example 2

[0027] 1. Preparation of graphene / magnesium composite slurry

[0028] In parts by mass, 15 parts of organic monomer hydroxyethyl methacrylate (HEMA) and 3 parts of crosslinking agent trimethylolpropane triacrylate (TMPTA) were dissolved in 29.125 parts of n-butanol, and stirred evenly. Then add 2.25 parts of dispersant oleic acid, stir evenly, then add 40.5 parts of particle size as magnesium powder of 60nm and 4.5 parts of graphene powder of particle size 500nm, stir evenly; Add 5 parts of initiator benzoyl peroxide ( BPO) and 0.625 parts of catalyst N,N dimethylaniline (DMA), stirred evenly to make graphene / magnesium composite slurry.

[0029] 2. Centrifugation, gel curing and sintering

[0030] a. The above-mentioned prepared graphene / magnesium slurry is injected into the mold in the centrifuge, and centrifuged for 10min at a speed of 2000r / min, so that the graphene and magnesium particles form a continuous gradient distribution;

[0031] b. Put the centrifuged slurry i...

example 3

[0033] 1. Preparation of graphene / magnesium composite slurry

[0034] In parts by mass, 10 parts of organic monomer hydroxyethyl methacrylate (HEMA) and 2 parts of crosslinking agent trimethylolpropane triacrylate (TMPTA) were dissolved in 47.875 parts of n-butanol, and stirred evenly. Then add 1.75 parts of dispersant oleic acid, stir evenly, then add 31.5 parts of particle size as magnesium powder of 60nm and 3.5 parts of graphene powder of particle size 500nm, stir evenly; Add 3 parts of initiator benzoyl peroxide ( BPO) and 0.375 parts of catalyst N,N dimethylaniline (DMA), stirred evenly to make graphene / magnesium composite slurry.

[0035] 2. Centrifugation, gel curing and sintering

[0036] a. The above-mentioned prepared graphene / magnesium slurry is injected into the inner mold of the centrifuge, and centrifuged for 15min at a speed of 1000r / min, so that the graphene and magnesium particles form a continuous gradient distribution;

[0037] b. Put the centrifuged sl...

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Abstract

The invention discloses a preparation method of a gradient graphene/magnesium composite material. Firstly, an organic monomer-hydroxyethyl methylacrylate, a cross linking agent-trimethylolpropane triacrylate, a dispersing agent-oleic acid, magnesium powder and graphene powder are dispersed in butanol to prepare a graphene/magnesium complex-phase pulp; an initiator-benzoyl peroxide and a catalyst N, N dimethylaniline are added in the ball-milled pulp; the prepared graphene/magnesium pulp is injected in a centrifuge for centrifugation, so that graphene and magnesium particles in the pulp form continuous gradient distribution; a mold is put in a vacuum oven for quick gel solidification after centrifugation; and a gel-cured sample is put in a pipe furnace for argon atmospheric sintering to obtain a gradient graphene/magnesium biomedical composite material after demolding and vacuum drying. The corrosion resistance and the mechanical performance of a magnesium basal body are improved.

Description

technical field [0001] The invention relates to a preparation method of a gradient graphene / magnesium composite material. Background technique [0002] As a biomedical metal material, magnesium alloy has obvious advantages compared with other biomedical metal materials that have been used clinically: (1) rich in resources and low in price, the reserve of magnesium in the earth's crust is extremely rich, and its reserve reaches 2.8%. Ranked 6th; (2) Magnesium is one of the indispensable mineral elements in the human body. Magnesium is involved in almost all metabolic processes of the human body. Its content in cells is second only to potassium. Magnesium affects potassium, sodium, and calcium ion cells (3) Good mechanical compatibility, the elastic modulus and density of magnesium-based alloys are closest to the elastic modulus and density of human bone; (4 ) Excellent biocompatibility and biodegradability, magnesium alloy itself can be gradually degraded in the organism, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/10C22C1/05A61L27/04A61L27/08A61L27/50
CPCA61L27/047A61L27/08A61L27/50A61L2430/02C22C1/0408C22C1/05C22C23/00
Inventor 于景媛魏磊山李强刘洋石萍
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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