What is antibacterial material, and what are the classifications of antibacterial materials, do you know?

First, inorganic antibacterial agent

Using an antibacterial property of a metal such as silver, copper or zinc, a metal such as silver, copper or zinc (or an ion thereof) is fixed on the surface of a porous material such as fluorspar or silica gel by physical adsorption ion exchange to form an antibacterial agent, and then Adding it to the corresponding article gives a material with antibacterial ability. Mercury, cadmium, lead and other metals also have antibacterial ability, but harmful to human body; copper, nickel, cobalt and other ions with color, will affect the beauty of the product, zinc has certain antibacterial properties, but its antibacterial strength is only silver ion 1 /1000. Therefore, silver ion antibacterial agents occupy a dominant position in inorganic antibacterial agents.

Silver ion antibacterial agent is the most commonly used antibacterial agent, which is in the form of white fine powder. The heat resistant temperature can reach above 270 °C. The carrier of the silver ion type antibacterial agent is zeolite, ceramics, activated carbon or the like. Sometimes in order to improve synergy, add some copper ions and zinc ions.

In addition, inorganic antibacterial agents such as zinc oxide, copper oxide, ammonium dihydrogen phosphate, and lithium carbonate are also available.

Second, organic antibacterial agent

The main varieties of organic antibacterial materials are vanillin or ethyl vanillin compounds, which are commonly used in polyethylene food packaging films for antibacterial action. Further, there are acyl anilines, imidazoles, thiazoles, isothiazolone derivatives, quaternary ammonium salts, biguanides, phenols and the like. The safety of organic antimicrobial agents is currently under investigation. In general, organic antibacterial agents have poor heat resistance, are easily hydrolyzed, and have a short effective period.