A Comprehensive Introduction to Plastic Antibacterial Agents 2
II. Technical Principle
Take the silver ion antibacterial agent as an example. Its mechanism of action is as follows:
Release and Adsorption: Under the influence of water, silver ions slowly migrate to the surface of the plastic, and because bacteria carry a negative charge, they are adsorbed onto the surface of the bacteria.
Cell Penetration: Silver ions enter the cells through the cell wall and react with the sulfur groups in the cell enzymes and combine.
Enzyme Inactivation and Cell Death: Destroying the composition and activity of the cell enzymes leads to metabolic disorder and death of the bacteria, thereby inhibiting reproduction.
III. Application Scenarios
Food Packaging
Extended Shelf Life: Adding antibacterial agents to food storage containers and packaging bags can inhibit the growth of bacteria and mold, preventing food from spoiling and turning moldy.
Compliance: Compliant with the requirements of GB9685-2016 for food contact materials, with low migration, ensuring food safety.
Medical Field
Reduced Infection Risk: Used in medical devices (such as catheters, wound dressings) and medical packaging to reduce cross-infection.
Long-term Protection: The antibacterial property runs through the product's service life. For example, antibacterial PP plastic plates pass the GB/T31402-2015 test, with an antibacterial rate of ≥99%. Household items
Health improvement: Antibacterial agents are added to chopping boards, kitchen utensils, storage containers, etc., to inhibit bacterial growth and promote food safety.
Durability enhancement: For example, PVC plastic rubber sealing strips are treated with anti-mold treatment to improve durability and hygiene performance.
Building materials field
Pipeline protection: The inner walls of PVC, PE, and PPR pipes are treated with antibacterial agents to prevent secondary water pollution and ensure drinking water safety.
Floor and wallpaper: PVC floors, wood-plastic floors, and wallpapers are treated with antibacterial agents to reduce the risk of bacterial transmission and extend service life.
Public facilities
High-traffic scenarios: PVC floors, light switches, etc. in places such as hospitals, schools, and shopping malls are coated with antibacterial coatings to reduce the risk of cross-infection.
V. Product Types
Nano silver antibacterial plastic masterbatch
Suitable for packaging materials, household items, and household appliances, it achieves long-term antibacterial effect through slow-release technology.
Example: After adding it to food packaging films, it can extend the shelf life of food and maintain transparency.
Organic composite antibacterial agent
Such as pyridine class, thiazole class, polyguanidine class, etc., are suitable for scenarios with high requirements for temperature resistance.
Example: The thermoplastic coating antibacterial agent LD904 remains stable at temperatures above 400°C, with an antibacterial effect of 99.99%.
Fiber antibacterial agent
Used in textile fabrics, such as ZW-20 can be adsorbed inside the fibers, improving water-wash resistance, and meeting hygiene requirements for household clothing.
