Antibacterial stainless steel and preparing method thereof

Abstract

The invention particularly relates to antibacterial stainless steel and a preparing method thereof. According to the technical scheme of the antibacterial stainless steel and the preparing method thereof, stainless steel obtained after surface pretreatment is put into a dopamine buffer solution to be deposited for 0.1 h to 72 h under the condition with the temperature ranging from -5 DEG C to 40 DEG C; then the obtained stainless steel is put into a solution containing titanium ions to be deposited for 0.1 h to 6 h; and finally the obtained stainless steel is put into a solution containing silver ions to be deposited for 0.1 h to 6 h, and therefore the antibacterial stainless steel is obtained. The concentration of the dopamine buffer solution ranges from 0.01 mol / L to 1 mol / L, the concentration of the solution containing the titanium ions ranges from 0.001 mol / L to 1 mol / L, and the concentration of the solution containing the silver ions ranges from 0.001 mol / L to 1 mol / L. By means of the antibacterial stainless steel and the preparing method thereof, the technology is simple, environment friendliness is achieved, and the cost is low; the surface antibacterial nanometer film layer structure of the antibacterial stainless steel prepared through the method is well-defined and orderly, is firmly combined with a base material, is high in corrosion resistance and hardness and has good antibacterial performance both under the illumination condition and the non-illumination condition.

Description

technical field [0001] The invention belongs to the field of stainless steel materials. Specifically relates to an antibacterial stainless steel and a preparation method thereof. Background technique [0002] Stainless steel is widely used in daily life. It is not only clean and beautiful, but also resistant to corrosion and rust. With the increasing awareness of people's health and sanitation and antibacterial, antibacterial stainless steel with antibacterial, antibacterial and sterilizing functions has emerged as the times require. From the perspective of practical application, antibacterial stainless steel uses more antibacterial properties on the surface of stainless steel, while alloy antibacterial stainless steel contains antibacterial metal ions on the surface and inside of stainless steel, which not only causes a certain amount of waste, but also increases Therefore, surface antibacterial stainless steel has great application prospects and research value. However,...

AI Technical Summary

Problems solved by technology

[0004] Second, the antibacterial conditions are limited

Some surface antibacterial stainless steel needs ultraviolet light irradiation to achieve photocatalytic antibacterial effect, which is not only difficult to meet the requirements in public places, but also will cause certain harm to the human body in industrial and household fields, and it is difficult to maintain the antibacterial effect in the absence of light

[0005] Third, there are defects in the antibacterial film preparation process

The prepared coating is too thick, it is not firmly bonded to the substrate, and it is easy to peel off. At the same time, the surface structure of the film is uncontrollable, and it is difficult to maintain a uniform nanometer size effect.