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How to choose antimicrobial agents for antimicrobial plastics

Antimicrobial plastics are plastics with antimicrobial functions, a class of materials that inhibit or kill bacteria, mold, algae, viruses, etc., that stain them during use, and achieve their own cleanliness and long-lasting durability by inhibiting the survival and reproduction of such microorganisms. Antimicrobial plastics are realized by adding a small amount of antimicrobial agent to ordinary plastics. Adding a small amount of antimicrobial agent does not change the physical, chemical, mechanical and other properties of the original plastic, while increasing the antimicrobial special features. At present, the domestic antimicrobial agents used in industry are silver ions, zinc ions, organic types. The following classification is introduced:

1, silver ion antimicrobial agent

This is the current common and efficient plastic antimicrobial agent. Since ancient times, silver has been used by mankind to disinfect and sterilize, but silver ions can easily react with sulfur components in the air, causing discoloration, and reduce the antimicrobial effect, to control the uniform release of silver ions is the key to the silver ion antimicrobial agent technology controlled by the Japanese company, in the market to provide the main Japanese company's products such as the Japanese Zeomic Ze0mic, Japan, Ishizuka Nitoko IONPURE Japan Zeomic Ze0mic, Japan Ishizuka IONPURE series of silver ion antimicrobial system, Japan Zeomic zeolite carrier silver ion antimicrobial agent, Japan Ishizuka nitrate glass carrier silver ion antimicrobial agent, both types of carrier antimicrobial agent have good silver ion load, can ensure sufficient silver ion content, but also to ensure that the appropriate concentration of silver ions released and the rate of the silver ions, and also can withstand high temperatures, to meet the current plastics, coatings, and even ceramics, the processing of the requirements. It can meet the current processing requirements of plastics, coatings and even ceramics. These two antimicrobial agents have been through the European and American food contact, safety application test.

2、Zinc ion antimicrobial agent

Compared with silver ion antimicrobial, antimicrobial activity is slightly worse, but its dispersion and compatibility with plastics, stability are better, the current market supply of the United States of America Oki's ZNPT and other products, which have been registered in the European Union, the United States registered in accordance with the requirements of the relevant safety regulations, and can be used for export of products in Europe and the United States.

3、Organic - inorganic composite antimicrobial agent

Organic-inorganic composite antimicrobial agents have both the high efficiency of organic antimicrobial agents, continuity and inorganic antimicrobial agent safety, heat resistance. Compound products are not only good antimicrobial effect, not subject to ultraviolet interference, and good compatibility with polymers, silver ions and organic antimicrobial agents can be slowly released together, to receive a comprehensive antimicrobial, anti-mold effect, experiments have shown that Escherichia coli, Staphylococcus aureus, molds have a very good antimicrobial effect, and has a better thermal stability and long-lasting effect.