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Preparation method of stannic oxide-ruthenium dioxide electroactive bacteriostatic coating on micro-arc titanium oxide surface facing implant

A technology of tin dioxide and ruthenium dioxide, which is applied in the direction of surface reaction electrolytic coating, coating, electrolytic coating, etc., can solve the unsolvable demand for synergy between biological activity and antibacterial effect, biological activity of titanium micro-arc oxidation coating Weak, the coating does not have antibacterial properties and other problems, to achieve the effect of excellent electrical properties, improved electrical properties, and improved biological activity

Active Publication Date: 2019-06-14
西安博源福创新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet this demand, there are technologies such as doping calcium, phosphorus, magnesium and other bioactive elements or post-treatment to introduce bioactive functional groups to enhance the bioactivity of the micro-arc oxidation coating, as well as pre-implantation pretreatment or implant It is a solution to load drugs on surface nanostructures to achieve antibacterial effect, but the biological activity of titanium micro-arc oxidation coating prepared according to the existing method is weak, and the antibacterial performance is not excellent enough
[0003] Patents ZL201610810740.0 and ZL201610810696.3 disclose methods for preparing bioactive micro-arc oxidation nanostructure coatings with macroscopic / microscopic multi-level pore structures, which solve the problem of low bioactivity of implants from the perspective of electrical stimulation, but the method is limited The prepared coating does not have antibacterial properties, which cannot solve the demand for synergy between biological activity and antibacterial effect in practical applications

Method used

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  • Preparation method of stannic oxide-ruthenium dioxide electroactive bacteriostatic coating on micro-arc titanium oxide surface facing implant
  • Preparation method of stannic oxide-ruthenium dioxide electroactive bacteriostatic coating on micro-arc titanium oxide surface facing implant
  • Preparation method of stannic oxide-ruthenium dioxide electroactive bacteriostatic coating on micro-arc titanium oxide surface facing implant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1) Micro-arc oxidation treatment: dissolving disodium edetate and sodium hydroxide in water to form a mixed solution, the concentration of disodium edetate in the mixed solution is 0.01mol / L, and the concentration of sodium hydroxide is 1mol / L. The mixed solution is used as the electrolyte, the titanium sample is used as the anode, and the stainless steel plate is used as the cathode; the electrolyte is added to the electrolytic container, and the titanium sample is placed in the electrolyte at 20°C for micro-arc oxidation. The micro-arc oxidation of the layer adopts pulse voltage, the positive voltage is 300V, the negative voltage is 20V, the pulse frequency of micro-arc oxidation is 600Hz, the duty cycle of micro-arc oxidation is 5%, the time of micro-arc oxidation is 3min, and titanium dioxide is formed on the surface of titanium. Micro-arc oxidation coating with microporous structure; wherein, the titanium sample is TA2 industrial pure titanium,

[0050] 2) Hydroth...

Embodiment 2

[0054] 1) Micro-arc oxidation treatment: dissolving disodium edetate and sodium hydroxide in water to form a mixed solution, the concentration of disodium edetate in the mixed solution is 0.05mol / L, and the concentration of sodium hydroxide is 0.01mol / L. The mixed solution is used as the electrolyte, the titanium sample is used as the anode, and the stainless steel plate is used as the cathode; the electrolyte is added to the electrolytic container, and the titanium sample is placed in the electrolyte at 30°C for micro-arc oxidation. The micro-arc oxidation of the layer adopts pulse voltage, the positive voltage is 500V, the negative voltage is 30V, the pulse frequency of micro-arc oxidation is 700Hz, the duty cycle of micro-arc oxidation is 7%, the time of micro-arc oxidation is 5min, and titanium dioxide is formed on the surface of titanium. Micro-arc oxidation coating with microporous structure; among them, the titanium sample is TA3 industrial pure titanium,

[0055] 2) H...

Embodiment 3

[0059] 1) Micro-arc oxidation treatment: dissolving disodium edetate and sodium hydroxide in water to form a mixed solution, the concentration of disodium edetate in the mixed solution is 0.5mol / L, and the concentration of sodium hydroxide is 0.01mol / L. The mixed solution is used as the electrolyte, the titanium sample is used as the anode, and the stainless steel plate is used as the cathode; the electrolyte is added to the electrolytic container, and the titanium sample is placed in the electrolyte at 50°C for micro-arc oxidation. The micro-arc oxidation of the layer adopts pulse voltage, the positive voltage is 400V, the negative voltage is 40V, the pulse frequency of micro-arc oxidation is 800Hz, the duty cycle of micro-arc oxidation is 13%, the time of micro-arc oxidation is 7min, and titanium dioxide with titanium dioxide is formed on the surface of titanium. Micro-arc oxidation coating with microporous structure; among them, the titanium sample is TA4 industrial pure ti...

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Abstract

The invention relates to a preparation method of a stannic oxide-ruthenium dioxide electroactive bacteriostatic coating on a micro-arc titanium oxide surface facing an implant. A titanium sample is placed in an electrolytic cell containing an electrolyte for micro-arc oxidation, then placed in a reaction vessel for hydrothermal treatment, and is finally subjected to ruthenium salt heat treatment,and the surface is formed with a stannic oxide-ruthenium dioxide composite nanostructure to obtain the electroactive bacteriostatic coating. The coating has a microscopic composite nanostructure withnanostructured stannic oxide and ruthenium dioxide grown on the surface. The coating has no discontinuous interface with a body, can rapidly induce the formation of bone-like apatite in a simulated body fluid environment, and has good biological activity; and after charging, the coating presents excellent electrical properties in the electrical performance test and presents good antibacterial properties in the antibacterial performance test.

Description

technical field [0001] The invention relates to the technical field of metal surface modification, in particular to a preparation method of a tin dioxide-ruthenium dioxide electroactive bacteriostatic coating on the surface of implant-oriented micro-arc oxidation titanium. Background technique [0002] Titanium is widely used in the field of medical implants. Using micro-arc oxidation technology, oxide coatings can be prepared on the surface of Ti and its alloys. By controlling the electrical parameters of the micro-arc oxidation and the composition and content of the electrolyte, the composition, structure and structure of the coating can be adjusted to prepare coatings with different functions. The mechanism involved in this method is the principle of plasma chemistry, the principle of electrochemical reaction and the principle of deposition of colloidal particles. According to the needs of the field of medical implants, titanium-based implants need to have biological ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/02A61L27/30A61L27/54A61L27/50A61L27/56C25D11/26C23C18/12
Inventor 周睿刘一菲谢维栋程嘉辉陈震代昊冉和祥憨勇
Owner 西安博源福创新材料有限公司