Preparation method of carbon-carbon composite material/hydroxyapatite/polylactic acid biological material

A technology of carbon composite materials and hydroxyapatite, applied in electrolytic inorganic material coatings, medical science, prostheses, etc., can solve the problems that the bonding strength between the coating and the substrate is not very good, and cannot meet the requirements of practical applications, etc., to achieve The effect of easy implementation and simple process

Inactive Publication Date: 2011-03-30
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the electrochemical deposition method, (CN200410071505.3 electrochemical preparation method of nano-ordered hydroxyapatite coating), can directly prepare HAp coating from calcium phosphorus salt solution under mild conditions, and the operation is simple and controllable Strong, low cost, but the bonding strength between the coating and the substrate obtained on the surface of the material is not very good (the bonding strength between the coating and the substrate is less than 10MPa), and it cannot meet the requirements of practical applications

Method used

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  • Preparation method of carbon-carbon composite material/hydroxyapatite/polylactic acid biological material
  • Preparation method of carbon-carbon composite material/hydroxyapatite/polylactic acid biological material
  • Preparation method of carbon-carbon composite material/hydroxyapatite/polylactic acid biological material

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Experimental program
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Effect test

Embodiment 1

[0023] (1) Pretreatment of carbon-carbon composite materials

[0024] The sample matrix material is 2D C / C composite material (type and manufacturer), which is cut into a size of about 10×10×2mm. The surface is first polished with 600# sandpaper, then finely ground with 1000# sandpaper, and finally ultrasonically cleaned with acetone and distilled water respectively, and dried for later use.

[0025] (2) Preparation of calcium phosphate coating

[0026] Prepare a mixed solution containing 0.02 mol / L of calcium nitrate and 0.012 mol / L of ammonium dihydrogen phosphate, and adjust the pH of the solution to 4.5 with ammonia water. The C / C composite sample is used as the cathode, and the graphite is used as the anode. Using the constant current method, set the current density to 5mA / cm 2 , turn on the ultrasonic generator, the output power of the ultrasonic device is 100W, the output frequency is 25KHz, and the electrodeposition is 45min.

[0027] (3) Alkaline treatment

[002...

Embodiment 2

[0033] (1) Pretreatment of carbon-carbon composite materials

[0034] The sample matrix C / C composite was cut to a size of approximately 10 x 10 x 2 mm. The surface is first polished with 600# sandpaper, then finely ground with 1000# sandpaper, and finally ultrasonically cleaned with acetone and distilled water respectively, and dried for later use.

[0035] (2) Preparation of calcium phosphate coating

[0036] Prepare a mixed solution containing 0.05 mol / L of calcium chloride and 0.03 mol / L of potassium dihydrogen phosphate, and adjust the pH of the solution to 4.8 with ammonia water. The C / C composite sample is used as the cathode, and the graphite is used as the anode. Using the constant voltage method, set the voltage to 8V, turn on the ultrasonic generator, the output power of the ultrasonic device is 60W, the output frequency is 25KHz, and the electrodeposition is 60min.

[0037] (3) Alkaline treatment

[0038] Soak the calcium phosphate coating obtained above in a 1...

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Abstract

The invention discloses a preparation method of a carbon-carbon composite material/hydroxyapatite/polylactic acid biological material. The method comprises a pretreatment procedure of a carbon-carbon composite material, a preparation procedure of a calcium phosphate coating and a preparation procedure of a polylactic acid coating, wherein the preparation procedure of the calcium phosphate coating comprises the following steps of: (a) preparing an electro-deposition solution; and (b) carrying out electrochemical deposition. Compared with the prior art, on the basis of the traditional electrochemical deposition method, an ultrasonic process is introduced, and by utilizing the oscillation cavitation effect of ultrasonic waves, coatings which are deposited on the surface of a substrate but insufficiently bonded fall off and are renewedly deposited, thereby the defect that the electrochemical deposition coatings are impractical due to insufficient bonding force is overcome; and meanwhile, the method has the advantage of simple process and is easy for application.

Description

technical field [0001] The invention relates to a preparation method of a biological material containing a carbon-carbon composite material (C / C), in particular to a preparation method of a C / C composite material / hydroxyapatite (HAp) / polylactic acid biological material. Background technique [0002] Biomedical materials are used to diagnose, repair or enhance the functions of human tissues and organs. Their functions are irreplaceable by drugs, and they are a new class of high-tech materials. At present, biomaterials that have been used clinically mainly include metal materials, polymer materials, and ceramic materials. But they are not perfect. The release of metal ions affects the biological function of the tissue, and the poor fatigue performance affects the long-term effect of the implant when it is under stress; organic polymers are in danger of degrading into monomers in a physiological environment, and a single ceramic The material is too brittle and has poor fatigue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/42C25D9/04
Inventor 朱广燕
Owner CHERY AUTOMOBILE CO LTD
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