2014年12月3日星期三

Antibacterial stainless steel

In the production of kitchen equipment, medical equipment, toiletries and cleaning decoration, people have been looking forward to both the shape of the metal new antibacterial material can appear.
Both structural and functional properties of new materials - both antibacterial stainless steel mechanical properties of structural materials, functional materials have physical and chemical properties, it is like that with the general 409 stainless steel plate decorative and landscaping as a member, as well as anti-bacterial self-cleaning effect of sterilization.
Data show now widely used antibacterial agent mainly organic antibacterial agents and inorganic antibacterial agent categories. Organic antibacterial agent has a long history in the medical field has been widely used, mainly in the use of spray or immersion. But they are in safety, durability, broad-spectrum antimicrobial resistance, heat resistance insufficient, especially for serious damage to humans and the environment can not be used on many occasions. Inorganic antimicrobial agent is mainly used as an additive, made with antibacterial fabric, plastic products, activated carbon, sanitary ceramics, etc., use of increasingly widespread. But in the heat, wear and corrosion resistance, strength and formability, can not meet the many needs of everyday use. Therefore, in the manufacture of kitchen machinery, medical equipment, bathroom cleaning supplies and carry out renovation, you must use has an antibacterial effect and shapes, appearance of metal products. This 304 stainless steel coil has antibacterial effect of the new birth, is an ideal product in people's minds.
Antibacterial stainless steel produced by antimicrobial resistance is divided into two types: type and their antimicrobial coating type. The former can be modified existing stainless steel products, i.e., on a stainless steel plated with a metal material with a germicidal, bactericidal effect, or other inorganic material, but the drawback is easy to wear, easy to aging, temperature changes and with the external environment and change, so that the loss of antibacterial stainless steel; the latter is added in the stainless steel production process some of the metallic elements having antimicrobial activity, through special processing to make antibacterial stainless steel itself, it does not have the disadvantages of the former, and low cost, easy to processing.
99.9% kill rate of E. coli, Staphylococcus aureus killing rate of 99.5%, 99.0% kill rate of Candida albicans, Kuhei bacteria kill rate of 86.6%. Common sense tells us that four kinds of bacteria are the most common ordinary life, to achieve such a killing effect, demonstrated broad-spectrum antibacterial antibacterial stainless steel.
With the material composition and microstructure of the adjustment and optimization, will further enhance the antibacterial effect. Antibacterial in an aqueous solution / antibacterial test, the antibacterial stainless steel test piece was immersed in the prepared bacteria liquid, by soaking at different times after the bacteria was observed in the number of colonies. The results showed that E. coli and Staphylococcus aureus killing rate of 90% -95%, indicating that the material in an aqueous solution can kill bacteria. That is not only able to kill bacteria in direct contact, but also to kill bacteria without direct contact through the diffusion of the solution.
Currently materials in the field for the "sterilization" and "antibacterial" there is no clear definition. Generally understood to inhibit bacterial antimicrobial development, growth and reproduction, sterilization is to kill microorganisms. Antibacterial stainless steel can not make it on the attached bacteria multiply, the bacteria are killed or inhibited at low level state, but does not change the intensity of ordinary stainless steel, corrosion resistance, aesthetic features, has a very broad application prospects. Look forward into people's homes.

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