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Antibacterial stainless steel and preparation method thereof

An antibacterial stainless steel and stainless steel technology, which is applied in the direction of liquid chemical plating, metal material coating technology, coating, etc., can solve the problems of high preparation equipment and technology requirements, high processing costs, etc., and achieve strong catalytic sterilization ability and low production cost Low, strong binding effect

Inactive Publication Date: 2013-12-18
庞晋山
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the objectives of the present invention is to provide a method for chemically depositing nano-titanium dioxide to prepare antibacterial stainless steel, so as to solve the above-mentioned problems of high processing cost, high requirements for preparation equipment and process technology

Method used

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  • Antibacterial stainless steel and preparation method thereof
  • Antibacterial stainless steel and preparation method thereof
  • Antibacterial stainless steel and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A preparation method of antibacterial stainless steel, comprising the following steps:

[0038] (1) Take stainless steel, see the microstructure of stainless steel figure 1 , using acetone to remove oil stains on the stainless steel surface in an ultrasonic environment, and the ultrasonic time is 8 minutes;

[0039] (2) pickling, the stainless steel after ultrasonic degreasing is pickled in hydrochloric acid for 2 minutes;

[0040] (3) Plating, add ammonium titanate, boric acid and deionized water into the container to prepare a plating solution, then keep the solution temperature at 40°C, place the pickled stainless steel in the plating solution for 48 hours ;

[0041] (4) Rinse and dry, rinse the surface after the permeation and plating is completed, and then dry, that is.

[0042] figure 2 is the SEM picture (ie scanning electron microscope picture) of the prepared antibacterial stainless steel, from figure 2 It can be seen that the coating on the surface of s...

Embodiment 2

[0046] A preparation method of antibacterial stainless steel, comprising the following steps:

[0047] (1) Take stainless steel and polish the surface of the stainless steel with 1000-mesh sandpaper to make the surface roughness Ra0.045;

[0048] (2) Use ethyl acetate and remove oil stains on the stainless steel surface in an ultrasonic environment. The amount of ethyl acetate is just enough to cover the stainless steel sample, and the ultrasonic time is 15 minutes;

[0049] (3) Use NaOH, NaCO 3 、Na 3 PO 4 and NaSiO 4 Prepare chemical degreasing fluid, in which NaOH concentration is 50g / L, NaCO 3 The concentration is 35g / L, Na 3 PO 4 The concentration is 30g / L, NaSiO 4 The concentration is 6g / L, the temperature of the chemical degreasing solution is maintained at 50°C, and the sample treated in step (2) is placed in the chemical degreasing solution for 20 minutes;

[0050] (4) Pickling, pickling the sample treated in step (3) in hydrochloric acid solution for 1 minute, a...

Embodiment 3

[0055] A preparation method of antibacterial stainless steel, comprising the following steps:

[0056] (1) Take stainless steel, first use 800-mesh sandpaper, and then use 1000-mesh sandpaper to polish the stainless steel surface, so that the surface roughness is Ra0.042;

[0057] (2) Use acetone to remove oil stains on the stainless steel surface in an ultrasonic environment. The amount of acetone is just enough to cover the stainless steel sample, and the ultrasonic time is 12 minutes; after ultrasonic degreasing, wash with absolute ethanol for 6 minutes, and then use deionized water Blow dry after washing;

[0058] (3) Use NaOH, NaCO 3 、Na 3 PO 4 and NaSiO 4 Prepare chemical degreasing fluid, in which NaOH concentration is 60g / L, NaCO 3 The concentration is 30g / L, Na 3 PO 4 The concentration is 20g / L, NaSiO 4 The concentration is 8g / L, the temperature of the chemical degreasing solution is maintained at 60°C, and the sample treated in step (2) is placed in the chemi...

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Abstract

The invention discloses antibacterial stainless steel and a preparation method thereof. The method comprises the steps of ultrasonic deoiling, pickling, diffusion coating, flushing and drying. According to the method, a nano-titanium-dioxide antibacterial material is formed on the surface of stainless steel through diffusion coating, the preparation cost is low, the process is simple, and the bonding force between an antibacterial layer and a stainless steel base body is strong. Different from that antibacterial elements are added into the stainless steel, nano titanium dioxide is formed on the surface of the stainless steel through diffusion coating, so that the mechanical properties of the stainless steel are not affected, and the processability of a stainless-steel material is not changed. Different from ionic antibacterial materials, nano titanium dioxide is non-toxic and harmless and can not release metal ions to a contact environment during the process of disinfecting bacteria or inhibiting bacterial growth; meanwhile, the catalytic disinfection capacity of nano titanium dioxide is strong, so that harmful bacteria, such as Escherichia coli, staphylococcus aureus and the like, can be effectively disinfected.

Description

technical field [0001] The invention relates to the technical field of stainless steel, in particular to an antibacterial stainless steel and a preparation method thereof. Background technique [0002] In modern life, people are always faced with the intrusion of microorganisms, and harmful bacteria such as pathogenic bacteria are a serious threat to human health. People pay attention to their environment and their own health, which promotes the research and development of antibacterial materials and antibacterial products. Due to its good processability and corrosion resistance, stainless steel is mostly used to make tableware containers. Endowing stainless steel tableware containers with antibacterial properties can effectively extend the shelf life of the stored food on the one hand and ensure people's healthy consumption of food; Or utensils can also be used to hold and preserve food. [0003] At present, the research on antibacterial stainless steel is mainly divided ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/00
Inventor 庞晋山
Owner 庞晋山
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