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Study on the mechanism of antibacterial powder coating

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Update time : 2020-05-21 16:42:38
  As a commonly used coating in the fields of construction, household appliances, furniture, and equipment, powder coatings have antibacterial requirements. Mainly used in hospitals, clinics, nursing homes, schools, restaurants, movie theaters and other occasions where more people gather or cross-use equipment such as elevators, fitness equipment, stair handrail door locks, central air conditioning vents, etc., can be effectively avoided Cross-infection of bacteria and viruses on people.
 
Powder coatings are relatively high in processing temperature and need to be baked (even more than 200 ℃ for about 20 minutes). Under such conditions, the active ingredients of many fungicides will be rapidly decomposed or volatilized, losing antibacterial effect. In addition, some fungicides added to the powder coating will affect the spraying effect of the coating, such as color, pressure resistance, gloss and so on. Therefore, in the selection of powder coating antibacterial agents, the selection surface of antibacterial ingredients is often narrow, generally silver-based antibacterial agents. Silver ions can directly inhibit the growth and reproduction of microorganisms, thereby forming an antibacterial effect, has been used as antibacterial substances for nearly a thousand years.
 
Tiansland Silver series powder coating antibacterial agent is an efficient and broad-spectrum antibacterial product, which can effectively protect powder coating spray products from the influence of bacteria and mold, and add a new function to powder coating spray products-antibacterial properties. The series of products are antibacterial powders with silver ions as the active component. The product has a very low odor and can withstand high temperatures below 400 ° C for a short time during processing.

Under the action of moisture, the silver ions slowly migrate to the surface of the coating, and the surface of the antibacterial product continuously releases Ag + slowly. Because the bacteria are negatively charged, the positively charged Ag + ions adsorb to the surface of the bacteria and enter the interior of the cell through the cell wall. The sulfur group (SH-) contained in the enzyme reacts and combines, destroying the composition and activity of cellular enzymes, resulting in bacterial cell death, thereby effectively inhibiting bacterial reproduction.
 
Combining the research results of the Tiansland Lab and the actual tests of many cooperative powder coating manufacturers, we recommend that the Tiansland silver antibacterial agent be added to the powder coating to 0.6% -0.8%, the specific amount can be based on the characteristics of the powder coating Adjustment. In the selection of silver antibacterial agents for powder coating antibacterial products, since the content of active ingredients varies from supplier to supplier, the amount of addition will also be different. Tiansland can "tailor-made" special antibacterial agents for your products. Ensure that the antibacterial rate reaches more than 99%. At the same time provide technical tracking services in the production process and product links.

 

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