As people's living standards gradually improve, the application of powder coatings, as an environmentally friendly coating, is expanding from traditional metal substrates (home appliances, building materials, transportation equipment, machine casings, etc.) to non-metallic substrates (plastic products, glass products, medium-density fiberboard, etc.).
With the expansion of application areas, powder coatings, when used in humid and moderately warm environments, are susceptible to damage from bacteria, mold, and other harmful microorganisms on the coating surface. This can lead to contamination, discoloration, chalking, and peeling, resulting in the loss of the coating's protective and decorative functions.
In certain special occasions or public places, antibacterial products are indispensable. Facilities in public areas prone to cross-infection, such as hospital beds, elevators, aluminum alloy doors and windows, metal doors, ceilings, and chairs, are particularly susceptible to bacterial and mold growth. Similarly, household appliances frequently exposed to water, such as refrigerators, freezers, dishwashers, washing machine casings, kitchen cabinets, and shop shelves, are also particularly prone to bacterial and mold growth.
European and American countries have successively developed antibacterial powder coatings, giving the coating antibacterial properties that can kill or inhibit bacteria adhering to the coating. These coatings are widely used in home appliances, automobiles, and other fields. The functionality of antibacterial coatings is achieved by adding antibacterial agents to the coating. In recent years, my country's antibacterial coating field has made significant progress. In the liquid coating field, antibacterial and antifungal coatings are now widely used in all aspects of people's lives. However, in the powder coating field, powder coatings undergo a high-temperature process during baking and curing, during which most antibacterial agents become ineffective, significantly reducing their antibacterial performance.