The antibacterial effect of nano-zinc oxide in coatings is mainly attributed to its unique physical and chemical properties, which enable nano-zinc oxide to exhibit excellent antibacterial properties in coatings. The following is a detailed explanation of the antibacterial effect of nano-zinc oxide in coatings:
1.
Antibacterial Mechanism:
Antibacterial Mechanism of Photocatalysis: Nanometer zinc oxide can decompose negatively charged electrons and positively charged holes by itself under sunlight, especially ultraviolet light. These holes can stimulate the oxygen in the air to form reactive oxygen species, which can then oxidize a variety of microorganisms, effectively killing bacteria.
Antibacterial Mechanism of Metal Ion Dissolution: The zinc ions in nano-zinc oxide will gradually be released. Upon contact with bacteria, antibodies will bind to the active protease in the bacteria, rendering it inactive, and subsequently leading to bacterial death.
2.Antibacterial Effect:
Nanometer zinc oxide antibacterial agent has a broad spectrum of bactericidal and antibacterial effects. It can effectively inhibit and kill harmful bacteria in the environment, reducing the harm of environmental microorganisms to the human body.
The antibacterial effect of nano-zinc oxide is long-lasting because zinc ions can be released from the cell after killing the bacteria and can repeat the antibacterial process.
Due to the small particle size, the number of surface atoms of nano-zinc oxide is significantly higher than that of traditional particles. This enhances the affinity between nano-zinc oxide and bacteria, thereby improving the efficiency of antibacterial action.
3.Application Example:
Nanometer zinc oxide can be prepared as nanometer antibacterial and mildew-resistant coatings, multifunctional mildew-resistant coatings, multifunctional environmental protection coatings, etc., for indoor and outdoor environmental protection.
The incorporation of nano-zinc oxide in latex paint can enhance its resistance to ultraviolet radiation, reduce its sensitivity to wet conditions, and improve its aging resistance.
4.
Dosage:
The recommended dosage of nano-zinc oxide in the coating is 1-5% to achieve a potent antibacterial effect. The specific amount of the addition can be determined based on the customer’s application requirements.
Pe scurt, the antibacterial effect of nano-zinc oxide in coatings is mainly attributed to its photocatalytic antibacterial mechanism and metal ion dissolution antibacterial mechanism. These mechanisms work together to enable nano-zinc oxide in coatings to exhibit excellent antibacterial effects, characterized by durability, a broad spectrum, and high efficiency.
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