Method for preparing hydroxyapatite bioactive coating

A technology of hydroxyapatite and biological activity, applied in the direction of coating, etc., can solve the problem of poor bonding strength between carbon nanotubes and matrix materials

Inactive Publication Date: 2012-07-11
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the technical problem of poor bonding strength between carbon nanotubes and matrix materials in the hydroxyapatite bio

Method used

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  • Method for preparing hydroxyapatite bioactive coating
  • Method for preparing hydroxyapatite bioactive coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) The carbon fiber prefabricated body is ultrasonically cleaned with acetone, absolute ethanol and distilled water in sequence, and then placed in a vacuum drying oven to dry to obtain sample A;

[0021] (2) Sample A was placed in nitric acid (50% by volume), soaked at 50°C for 10 hours, then ultrasonically cleaned with distilled water and then dried in a vacuum oven to obtain sample B;

[0022] (3) Nickel nitrate and acetone were mixed according to the mass ratio of 1%, and ultrasonically oscillated for 30 minutes to form a uniform solution;

[0023] (4) Place sample B in the solution prepared in step (3), soak for 12 hours at 25 degrees, and then put it into a vacuum drying oven to dry to obtain sample C;

[0024] (5) Place sample C in a chemical vapor deposition furnace, calcinate at 400°C for 30 minutes, then feed in hydrogen with a flow rate of 80L / h for reduction reaction, and the reduction time is 20 minutes; then heat up to 720°C, and feed in propylene (Flow ...

Embodiment 2

[0029] (1) The carbon / carbon composite material was ultrasonically cleaned with acetone, absolute ethanol and distilled water in sequence, and then put into a vacuum drying oven to dry to obtain sample A;

[0030] (2) Sample A was placed in nitric acid (60% by volume), soaked at 60°C for 12 hours, then ultrasonically cleaned with distilled water and then dried in a vacuum oven to obtain sample B;

[0031] (3) Nickel nitrate and acetone were mixed according to a mass ratio of 3%, and ultrasonically oscillated for 60 minutes to form a uniform solution;

[0032] (4) Place sample B in the solution prepared in step (3), soak for 15 hours at 30 degrees, and then put it into a vacuum drying oven to dry to obtain sample C;

[0033] (5) Place sample C in a chemical vapor deposition furnace, calcinate at 450°C for 50 minutes, then feed in hydrogen with a flow rate of 100L / h for reduction reaction, the reduction time is 30 minutes; then heat up to 750°C, and feed in propylene (Flow rate...

Embodiment 3

[0037] (1) The carbon fiber prefabricated body is ultrasonically cleaned with acetone, absolute ethanol and distilled water in sequence, and then placed in a vacuum drying oven to dry to obtain sample A;

[0038] (2) Sample A was placed in nitric acid (55% by volume), soaked at 55°C for 11 hours, then ultrasonically cleaned with distilled water and then dried in a vacuum oven to obtain sample B;

[0039] (3) Nickel nitrate and acetone were mixed according to the mass ratio of 2%, and ultrasonically oscillated for 45 minutes to form a uniform solution;

[0040](4) Place sample B in the solution prepared in step (3), soak for 14 hours at 28 degrees, and then put it into a vacuum drying oven to dry to obtain sample C;

[0041] (5) Place sample C in a chemical vapor deposition furnace, calcinate at 420°C for 40 minutes, then feed in hydrogen with a flow rate of 90L / h for reduction reaction, the reduction time is 25 minutes; then heat up to 730°C, and feed in propylene (Flow rate ...

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Abstract

The invention discloses a method for preparing a hydroxyapatite bioactive coating, and aims to solve the technical problem that the bonding strength of carbon nano-tubes and a matrix material in a hydroxyapatite bioactive coating prepared by the conventional preparation method is low. The technical scheme is that the method comprises the following steps of: introducing the carbon nano-tubes onto the surface of the matrix material in an in-situ growth mode, and electrodepositing a hydroxyapatite coating, so that the bottoms of the carbon nano-tubes are combined with the matrix material in the in-situ growth mode, and the carbon nano-tubes are distributed in the hydroxyapatite coating to achieve a wild phase effect. A method for forming effective combination of the carbon nano-tubes and the matrix material in the hydroxyapatite coating is constructed.

Description

technical field [0001] The invention relates to a preparation method of a bioactive coating, in particular to a preparation method of a hydroxyapatite bioactive coating. Background technique [0002] Hydroxyapatite is the main inorganic component of hard tissues such as human bones and teeth. It has the characteristics of non-toxic, non-irritating and stable chemical properties, and its surface has polarity, which has a strong affinity with body tissues and can guide bones. Tissue grows and forms a firm osseointegration with bone tissue, so it is considered to be a good surface activation modified coating material. However, hydroxyapatite coating is brittle and prone to cohesive failure inside the coating; in addition, the interface bonding force between hydroxyapatite coating and substrate material is insufficient, thus affecting the stability of the coating. In order to solve the above problems, researchers at home and abroad have introduced a variety of reinforcing phase...

Claims

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Application Information

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IPC IPC(8): A61L27/30
Inventor 张磊磊李贺军宋强赵雪妮曹盛
Owner NORTHWESTERN POLYTECHNICAL UNIV
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