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A kind of antibacterial stainless steel and preparation method thereof

An antibacterial stainless steel and stainless steel technology, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve the problems of high technical requirements for preparation equipment and process, high processing cost, and achieve strong catalytic sterilization ability and high preparation cost. Low, strong binding effect

Inactive Publication Date: 2016-06-15
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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  • A kind of antibacterial stainless steel and preparation method thereof
  • A kind of antibacterial stainless steel and preparation method thereof
  • A kind of antibacterial stainless steel and preparation method thereof

Examples

Experimental program
Comparison scheme
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 an antibacterial stainless steel and a preparation method thereof, wherein the preparation steps include ultrasonic degreasing, pickling, infiltration plating and rinsing and drying. The method infiltrates and plating nano-titanium dioxide antibacterial material on the surface of the stainless steel, and the preparation cost is low and the process is simple. The antibacterial layer has a strong binding force with the stainless steel substrate. This method is different from adding antibacterial elements to the stainless steel, in that the infiltration and plating of nano-titanium dioxide on the surface of the stainless steel does not affect the mechanical properties of the stainless steel and does not change the processing performance of the stainless steel material. This method is different from ionic antibacterial materials. Nano-titanium dioxide is non-toxic and harmless. During the process of killing or inhibiting bacterial growth, it will not release metal ions into the contact environment. At the same time, its catalytic sterilization ability is strong, which can effectively kill E. coli, Harmful bacteria such as Staphylococcus aureus.

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 Patents(China)
IPC IPC(8): C23C18/00
Inventor 庞晋山
Owner 庞晋山
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