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A method for preparing porous bioceramic membranes by micro-arc oxidation

A bioceramic membrane and micro-arc oxidation technology, which is applied in tissue regeneration, prosthesis, coating, etc., can solve the problems of micropores and microcracks, poor fracture toughness of micro-arc oxidation ceramic film layer, material waste, etc., to achieve Improve biological performance, facilitate operation, and promote deposition

Active Publication Date: 2019-01-04
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a material used in biological implants, this ceramic film material has many shortcomings in terms of biological performance: (1) The fracture toughness of the micro-arc oxidation ceramic film layer is poor, and HA and TiO 2 The difference in physical and thermal properties of the coating is large, resulting in low bonding strength of the coating and the formation of micropores and microcracks
(2) The specific components and crystallinity of the phase in the micro-arc oxidation coating are uncontrollable, which affects the biological activity of the coating
Adding nanoparticles directly to the electrolyte will introduce nanoparticles to the entire sample surface film layer, and the functional design of a specific area cannot be performed; in order to maintain a certain concentration of nanoparticles in the electrolyte, a large number of nanoparticles must be provided. cause serious waste of materials

Method used

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  • A method for preparing porous bioceramic membranes by micro-arc oxidation
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  • A method for preparing porous bioceramic membranes by micro-arc oxidation

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Embodiment 1

[0033] A method for preparing a porous bioceramic membrane by micro-arc oxidation, specifically comprising the following steps:

[0034] (1) For titanium alloy Ti 6 Al 4 V Surface pretreatment: Cut the titanium alloy into cylindrical titanium material, drill holes above the sample, grind and polish the surface of the titanium alloy until there is no scratch on the surface of the sample, then degrease with acetone, and use 1g / L sodium hydroxide solution alkaline washing and deionized water washing, natural drying after standby;

[0035] (2) Preparation of a gel containing nanoparticles: Mix 10 mL of tetrabutyl phthalate with 20 mL of absolute ethanol and stir to form solution A; then, add 0.14 g of ZrO 2 The nanoparticles were dispersed by adding 20 mL of absolute ethanol, mixed with 2 mL of deionized water, and 2 mL of concentrated nitric acid was added dropwise as a chelating agent to form solution B; then, solution A was added dropwise to the prepared solution B at room t...

Embodiment 2

[0040] A method for preparing a porous bioceramic membrane by micro-arc oxidation, specifically comprising the following steps:

[0041] (1) For titanium alloy Ti 6 Al 4 V Surface pretreatment: Cut the titanium alloy into cylindrical titanium material, drill holes above the sample, grind and polish the surface of the titanium alloy until there is no scratch on the surface of the sample, then degrease with acetone, and use 1g / L sodium hydroxide solution alkaline washing and deionized water washing, natural drying after standby;

[0042] (2) Preparation of a gel containing nanoparticles: Mix 20mL tetrabutyl phthalate with 40mL absolute ethanol and stir to form solution A; then, add 0.5g of anatase TiO 2 The nanoparticles were dispersed by adding 40 mL of absolute ethanol, mixed with 4 mL of deionized water, and 4 mL of concentrated nitric acid was added dropwise as a chelating agent to form solution B; then, solution A was added dropwise to the prepared solution B at room tem...

Embodiment 3

[0047] A method for preparing a porous bioceramic membrane by micro-arc oxidation, specifically comprising the following steps:

[0048] (1) For titanium alloy Ti 6 Al 4 V Surface pretreatment: Cut the titanium alloy into cylindrical titanium material, punch holes on the top of the sample, grind and polish the titanium alloy surface until there are no scratches on the surface of the sample, and then use absolute ethanol to degrease, Wash with 1g / L sodium hydroxide solution and deionized water, and dry naturally for later use;

[0049] (2) Preparation of a gel containing nanoparticles: Mix 20 mL of tetrabutyl phthalate with 40 mL of absolute ethanol and stir to form solution A; then, add 0.5 g of ZrO 2 with 0.5g of rutile TiO 2 Add 40mL of absolute ethanol to the nanoparticles for dispersion and mixing, then mix with 4mL of deionized water, and dropwise add 4mL of concentrated nitric acid as a chelating agent to form solution B; then, add solution A dropwise to the prepared ...

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Abstract

The invention discloses a method for preparing a multihole biological ceramic film through micro-arc oxidation. Firstly, nano-particles are solidified through gel, then, the gel is smeared to the surface of needed portions of a pre-treated titanium alloy sample according to the performance requirements of different portions of a material, the titanium alloy sample is hung in an electrolyte to be subjected to micro-arc oxidation, in the oxidation process, the nano reinforcement particles enter the electrolyte and take participation in oxidation to enter a multihole biological film layer, accordingly, the film layer performance is improved, the film layer toughness is enhanced, hydroxyapatite is guided to deposit, and the biological performance of the film layer is improved. By means of the method, region design of the material can be achieved, the nano reinforcement particles with different characteristics are added into the surface of a titanium alloy, the performance of the surface of the film layer is changed in an oriented manner, operation is convenient, the process is simple, and the cost is saved.

Description

technical field [0001] The invention relates to a method for preparing a porous bioceramic membrane by micro-arc oxidation, and belongs to the technical field of surface treatment of orthopedic metal materials. Background technique [0002] Titanium and its alloys are widely used as dental and orthopedic implant materials due to their excellent mechanical strength, chemical stability and biocompatibility. However, the biological inertness of titanium alloy makes it poorly integrated with the implant site, and it is easy to separate from the surrounding host bone tissue and loosen, resulting in implant failure. The surface layer of porous titanium dioxide and hydroxyapatite (HA) with high biological activity can be prepared by micro-arc oxidation technology, and the surface layer of the coating can be activated by hydroxyapatite, which can promote the osseointegration and early stage of the implant. The cell adhesion greatly improves the bonding strength between it and the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26A61L27/06A61L27/32A61L27/56A61L27/50
CPCA61L27/06A61L27/32A61L27/50A61L27/56A61L2420/02A61L2430/02C25D11/024C25D11/26
Inventor 严继康刘明唐婉霞倪尔鑫甘国友谈松林张家敏杜景红易建宏
Owner KUNMING UNIV OF SCI & TECH
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