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A UV-assisted electrostatic atomization forming system and preparation method of titanium dioxide coating

An electrostatic atomization, titanium dioxide technology, applied in surface reaction electrolytic coatings, coatings, electrolytic coatings, etc., can solve the problems of poor antibacterial persistence and fast silver ion release speed, and achieve biocompatibility and rich applications. Effect

Active Publication Date: 2019-01-25
ZHEJIANG CANWELL MEDICAL DEVICES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional silver-based antibacterial agents have the disadvantages of excessively fast release of silver ions and poor antibacterial persistence.

Method used

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  • A UV-assisted electrostatic atomization forming system and preparation method of titanium dioxide coating
  • A UV-assisted electrostatic atomization forming system and preparation method of titanium dioxide coating
  • A UV-assisted electrostatic atomization forming system and preparation method of titanium dioxide coating

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] 1) Add 0.5mol / L Na 2 SiO 3 and 0.05mol / L NaOH mixed solution as electrolyte;

[0024] 2) With the cleaned titanium sheet as the anode and the platinum sheet as the cathode, the titanium sheet was micro-arc oxidized for 2 minutes at 220V, 1min; 235V, 1min sub-voltage;

[0025] 3) Dry the amorphous titanium dioxide coating material obtained in step 2 micro-arc oxidation in an oven at 80°C, take it out after drying, put it into a sintering furnace for heat treatment, increase the temperature at a rate of 5°C / min to 450°C, and keep it for 3 to 4 hours to remove organic ingredients.

[0026] 4) Under dark conditions, immerse the micro-arc oxidation titanium dioxide coating material after the heat treatment in step 3 into a 0.1M silver nitrate solution for 4 hours.

[0027] 5) Wash and dry the titanium sheet treated in step 4, and irradiate it with ultraviolet light (wavelength ~250nm) for 30 minutes to obtain a titanium dioxide nanostructure coating with biocompatibility ...

Embodiment 1

[0028] The nano-Ag particle-doped micro-arc oxidation titanium dioxide coating structure that embodiment 1 obtains is as follows figure 2 (a) shown.

example 2

[0030] Considering that the loading of nano-Ag particles on the micro-arc oxidation titanium dioxide coating obtained by the method of Example 1 is not uniform enough and stable. Therefore, the method was improved, and the micro-arc oxidation titanium dioxide coating doped with nano-Ag particles was prepared after surface modification of the material.

[0031] 1) Add 0.5mol / L Na 2 SiO 3 and 0.05mol / L NaOH mixed solution as electrolyte;

[0032] 2) With the cleaned titanium sheet as the anode and the platinum sheet as the cathode, the titanium sheet was micro-arc oxidized for 2 minutes at 220V, 1min; 235V, 1min sub-voltage;

[0033] 3) Dry the amorphous titanium dioxide coating material obtained in step 2 micro-arc oxidation in an oven at 80°C, take it out after drying, put it into a sintering furnace for heat treatment, increase the temperature at a rate of 5°C / min to 450°C, and keep it for 3 to 4 hours to remove organic ingredients.

[0034] 4) The titanium dioxide coatin...

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Abstract

The invention discloses a UV assistant electrostatic atomization moulding system and a manufacture method for a titanium dioxide coating. The method is characterized by integrating micro-arc oxidation technology and electrostatic atomization technology, and specifically comprises the steps of electrolyte preparation, micro-arc oxidation, drying, thermal treatment, electrostatic atomization and photoreduction, so that the porous titanium dioxide coating doped with silver nanoparticles is manufactured. According to research, the titanium dioxide coating doped with the silver nanoparticles has good bacterium resistance and biological activity. The manufacture method is simple, high in operability and low in raw material cost; and the whole manufacture process is performed in an air atmosphere, and no special devices are needed.

Description

technical field [0001] The invention relates to a bone tissue engineering coating material, in particular to a UV-assisted electrostatic atomization forming system and a preparation method of a titanium dioxide coating (on the surface of an artificial joint prosthesis). Background technique [0002] In the past half century, due to the continuous emergence of new biosynthetic materials and the continuous advancement of surgical technology, the application of various new materials in the field of surgery has been significantly promoted, accompanied by the significant growth of various artificial joint prostheses . At the same time, the high infection rate of joint prosthesis and the resulting complications such as prosthesis loosening are becoming more and more prominent. Previous studies have demonstrated that the mechanism leading to periarticular prosthetic infection is the first adhesion of floating bacteria to the surface of the prosthesis followed by the formation of a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26A61L27/30A61L27/02A61L27/54A61L27/50
CPCA61L27/025A61L27/306A61L27/50A61L27/54A61L2300/104A61L2300/404A61L2300/602A61L2430/24C25D11/26
Inventor 李翔方思懿方明
Owner ZHEJIANG CANWELL MEDICAL DEVICES CO LTD
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