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Preparation method of antimicrobial coating for metal of medical equipment

A medical device and antibacterial coating technology, applied in the field of plating metal materials, can solve the problem of high cost, and achieve the effects of low cost, good antibacterial effect and convenient operation

Active Publication Date: 2014-12-10
刘军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, these two antibacterial stainless steels are obtained by adding silver or copper to molten steel during steelmaking, and the cost is very high for metals used in medical and medical devices that only need to have antibacterial properties on the surface

Method used

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  • Preparation method of antimicrobial coating for metal of medical equipment
  • Preparation method of antimicrobial coating for metal of medical equipment
  • Preparation method of antimicrobial coating for metal of medical equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Preparation of titanium oxide paint: under stirring, add ethanol, butanol, butyl titanate, nitric acid, ethyl silicate, triazole, silver nitrate and zinc nitrate in sequence, the addition amounts are 70%, 21.435%, 5%, 1.5%, 2%, 0.01%, 0.05%, 0.005%, stirring for 5 hours to prepare titanium oxide coating.

[0025] After immersing the metal of the medical device in the titanium oxide coating for 5 minutes, the metal is evenly lifted upward at a speed of 1-5cm / min, and baked at 80°C for 1 hour. Then, the metal was placed in a muffle furnace and calcined at 150° C. for 4 hours. After being taken out, it is naturally cooled to room temperature to obtain a metal antibacterial coating for medical devices. The surface of the coating is smooth, still has the color of the underlying metal material, does not turn black, and has a good antibacterial effect, and the antibacterial rate against Staphylococcus aureus and Escherichia coli is above 99.98%.

[0026] Test report of titan...

Embodiment 2

[0058] Preparation of titanium oxide paint: under stirring, add ethanol, isopropanol, butanol, isopropanol titanate, hydrochloric acid, methyltrichlorosilane, benzotriazole, silver nitrate and zirconium nitrate in sequence, and the addition amounts are 60%, 21%, 12.96%, 4%, 0.5%, 1.5%, 0.005%, 0.005%, 0.03%, stirring for 7 hours to prepare titanium oxide coating.

[0059] After immersing the metal of the medical device in the titanium oxide coating for 10 minutes, the metal is evenly lifted upward at a speed of 1-5cm / min, and blown by a fan for 1.5 hours. After drying, the metal was placed in a muffle furnace and calcined at 120°C for 8 hours. After being taken out, it is naturally cooled to room temperature to obtain a metal antibacterial coating for medical devices. The surface of the coating is smooth, still has the color of the underlying metal material, does not turn black, and has a good antibacterial effect.

Embodiment 3

[0061] Preparation of titanium oxide paint: under stirring, add methanol, butanol, butyl titanate, hydrochloric acid, ethyl silicate, methyl benzotriazole, silver nitrate and zirconium oxychloride in sequence, the addition amount is 80%, 13.454%, 3%, 1.5%, 2%, 0.003%, 0.003%, 0.04%, stirring for 5 hours to prepare titanium oxide coatings.

[0062] After immersing the metal of the medical device in the titanium oxide coating for 10 minutes, the metal is evenly lifted upward at a speed of 1-5 cm / min, and baked at 50°C for 3 hours. After drying, the metal was placed in a muffle furnace and calcined at 230° C. for 1 hour. After being taken out, it is naturally cooled to room temperature to obtain a metal antibacterial coating for medical devices. The surface of the coating is smooth, still has the color of the underlying metal material, does not turn black, and has a good antibacterial effect.

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Abstract

The invention relates to a preparation method of an antimicrobial coating for metal of medical equipment and belongs to the technical field of plating of metal materials. The preparation method comprises the following steps: after titanate is dissolved with a solvent, adding acid, water, silicon-contained compounds, dispersing agents, silver salt and synergists in sequence in the mixing process and uniformly stirring to prepare a titanium oxide coating; upwardly and uniformly taking out the medical equipment metal immersed into the titanium oxide coating, airing, blowing or drying; then, putting the coated metal into a muffle furnace to calcine; taking out, naturally cooling to a room temperature and obtaining the antimicrobial coating on the metal of the medical equipment. According to the preparation method, as the titanium oxide coating containing silver is adopted as an antimicrobial material, and the silicon-containing compounds and the synergists are added, the preparation method has the characteristics that the preparation method is simple, the operation is convenient, the cost is low, and the antibacterial effect is good, the falling-off of coating materials can be prevented during the use, and the prepared coating can be stored for a long time.

Description

technical field [0001] The invention belongs to the technical field of plating on metal materials, and in particular relates to a method for preparing a metal antibacterial coating for medical devices. Background technique [0002] Metal ions have different antibacterial effects, among which the order of antibacterial activity is: Hg>Ag>Cd>Cu>Zn>Fe>Ni, etc. However, it is not enough to have antibacterial activity, and it is also required not to cause harm to the human body , and the safety ranking of metal ions is: Ag>Co>Ni>Al>Zn>Cu=Fe>Mn>Sn>Ba>Mg>Ca, so considering both safety and antibacterial properties, Ag ions are the most Well, followed by Cu-based and Zn-based. [0003] Studies have proved that antibacterial stainless steel obtained by adding antibacterial metal elements to molten steel through steelmaking will have a good antibacterial effect, and the antibacterial material is easy to process and has excellent performa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/14
Inventor 周海燕姜华刘军
Owner 刘军
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