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Carbon/carbon composite material containing bioactive calcium phosphate coating on surface and preparation method for carbon/carbon composite material

A carbon composite material, bioactive technology, applied in coatings, electrolytic coatings, surface reaction electrolytic coatings, etc., can solve the problems of weak C/C surface bonding, poor stability of HA coating, etc. Good compatibility, easy to metabolize effect

Inactive Publication Date: 2015-07-01
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, to provide a carbon / carbon composite material containing a bioactive calcium phosphate coating on the surface and its preparation method and application, to solve the poor stability of the HA coating prepared by the prior art, The combination with the C / C surface is not strong, and it is not suitable for technical problems formed on the surface of implants with complex shapes

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  • Carbon/carbon composite material containing bioactive calcium phosphate coating on surface and preparation method for carbon/carbon composite material
  • Carbon/carbon composite material containing bioactive calcium phosphate coating on surface and preparation method for carbon/carbon composite material
  • Carbon/carbon composite material containing bioactive calcium phosphate coating on surface and preparation method for carbon/carbon composite material

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preparation example Construction

[0025] The embodiment of the present invention provides a method for preparing a carbon / carbon composite material having a bioactive calcium phosphate coating on the surface of the prepared HA coating with high stability and strong bonding with the C / C surface. The preparation method technology of the embodiment of the present invention is as figure 1 As shown, it includes the following steps:

[0026] Step S01. Hydrothermal treatment of the carbon / carbon composite material: placing the carbon / carbon composite material in a solution containing 1-4 mol / L oxidant for hydrothermal treatment, and performing surface treatment on the carbon / carbon composite material;

[0027] Step S02. Using the cathode micro-arc method to grow a bioactive calcium phosphate coating on the surface of the hydrothermally treated carbon / carbon composite material: the carbon / carbon composite material after the hydrothermal treatment is used as the cathode, and the stainless steel is used as the anode, an...

Embodiment 1

[0050] A carbon / carbon composite material with a bioactive calcium phosphate coating on its surface and a preparation method thereof, comprising the steps of:

[0051] S11: 10×10×2mm 3 After grinding and polishing, the carbon / carbon composite material was ultrasonically cleaned with acetone, ethanol, and deionized water in sequence, placed in an aqueous solution of 4mol / L ammonium persulfate, hydrothermally treated at 413K (140°C) for 24h, and cooled Take it out and clean it ultrasonically with deionized water;

[0052] S12: Prepare an ethanol solution containing calcium nitrate at a concentration of 0.01mol / L and phosphorus pentoxide at a concentration of 0.006mol / L; and an ultrasonic nebulizer can be placed in the solution to make the solution ultrasonically bubble;

[0053] S13: Soak the treated carbon / carbon as the cathode and the stainless steel as the anode in the solution described in S12, and apply a voltage, the pulse voltage is 450V, the pulse frequency is 600Hz, th...

Embodiment 2

[0058] A carbon / carbon composite material with a bioactive calcium phosphate coating on its surface and a preparation method thereof, comprising the steps of:

[0059] S21: Will be 10×10×2mm 3 After grinding and polishing, the carbon / carbon composite material was ultrasonically cleaned with acetone, ethanol, and deionized water in sequence, placed in a 1mol / L hydrogen peroxide aqueous solution, hydrothermally treated at 99°C for 12h, cooled, taken out, and used Ultrasonic cleaning with ionized water;

[0060] S22: Prepare an ethanol solution containing 0.4 mol / L calcium nitrate and 0.4 mol / L triethyl phosphate, ethylene glycol and glycerin account for 30% of the volume of the ethanol solution; wherein the volume ratio of ethylene glycol and glycerin is 1 :50;

[0061] S23: Soak the treated carbon / carbon as the cathode and the stainless steel as the anode in the solution described in S22, and apply a constant voltage mode voltage of 500V for 12 hours;

[0062] S24: Take it o...

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Abstract

The invention discloses a carbon / carbon composite material containing bioactive calcium phosphate coating on surface and a preparation method for the carbon / carbon composite material. The preparation method for the carbon / carbon composite material containing bioactive calcium phosphate coating on surface comprises the following steps: performing hydro-thermal treatment on the carbon / carbon composite material, and growing the bioactive calcium phosphate coating on the surface of the carbon / carbon composite material through a cathode differential-arc method. According to the preparation method for the carbon / carbon composite material containing bioactive calcium phosphate coating on surface disclosed by the invention, the bioactive calcium phosphate coating is grown on the surface of the carbon / carbon composite material through the cathode differential-arc method, so that the grown bioactive calcium phosphate coating has very high adhesive strength and high stability which can be as good as those of an induction heating method. The preparation method can overcome the limitation that an existing high-frequency induction heating / hydrothermal method is only suitable for a rotary body, and the preparation method is suitable for the rotary body, and also can be suitable for growing the bioactive calcium phosphate coating on a complex molding surface.

Description

technical field [0001] The invention belongs to the field of biomaterials, in particular to a carbon / carbon composite material with a bioactive calcium phosphate coating on the surface and a preparation method thereof. Background technique [0002] Carbon / carbon composites (C / C) have excellent properties, such as good biocompatibility, designable mechanical properties, fatigue resistance, corrosion resistance, stable physiological properties, light weight, pseudoplasticity, and micropores that are conducive to tissue growth. etc., especially its elastic modulus is comparable to that of human bone, and it is a bone repair substitute material with excellent comprehensive performance. Then C / C is a biologically inert material. After implanted in the human body, it is easily surrounded by connective tissue and cannot be integrated with the formed bone. For this reason, calcium phosphate bioactive coatings, such as hydroxyapatite and brushite, are often applied on the surface. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/00A61L27/08A61L27/32A61L27/50
Inventor 熊信柏曾燮榕王海瑞邹继兆钱海霞谢盛辉
Owner SHENZHEN UNIV
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