The core technologies of PC plastic antibacterial agents and antibacterial masterbatches
Types and mechanisms of action of antibacterial agents
Silver ion antibacterial agent
Technical features: With inorganic silver ions as the core component, Ag⁺ is continuously released through sustained-release technology to destroy the bacterial cell membrane and enzyme system.
Advantages:
Broad-spectrum antibacterial: The antibacterial rate against Escherichia coli, Staphylococcus aureus, Candida albicans, etc. is ≥99.99%.
High-temperature resistance: With a temperature resistance of up to 380℃, it is suitable for high-temperature processing of PC plastics (such as injection molding and extrusion).
Long-lasting effect: By controlling the release rate of silver ions through a special process, the antibacterial effect can last for more than 8 years.
Safe and environmentally friendly: Certified by FDA and REACH, with no VOCs emissions, it can be safely used in baby products and food packaging.
Organic antibacterial agent
Technical features: Mainly composed of quaternary ammonium salts, phenols, aldehydes, etc., it disrupts the bacterial metabolic process through chemical combination.
Advantages:
Quick effect: Inhibits bacterial growth in a short period of time.
Low cost: Suitable for application scenarios that are sensitive to price.
Limitations:
Poor heat resistance: It is prone to decomposition at high temperatures and is not suitable for high-temperature processing of PC plastic.
Insufficient durability: The antibacterial effect declines over time and the product needs to be replaced regularly.
Compound antibacterial agent
Technical features: Combining inorganic silver ions with organic antibacterial components, it has both broad-spectrum and rapidity.
Advantages:
Synergistic effect: Silver ions and organic components work together to enhance the antibacterial efficiency.
Wide applicability: Suitable for various plastic substrates (such as PP, ABS, PE, etc.).
Ii. Technical Advantages and Application Scenarios of Antibacterial Masterbatches
The core advantages of antibacterial masterbatches
Uniformity of dispersion: Through pre-dispersion technology, the antibacterial agent is evenly dispersed in the carrier resin to avoid agglomeration during processing.
Processing convenience: It can be directly mixed with PC plastic particles without the need for additional equipment, simplifying the production process.
Performance stability: The antibacterial agent is closely combined with the carrier resin to ensure the persistence and consistency of the antibacterial effect.
Application cases of antibacterial masterbatches
Medical field
Disposable syringes, infusion sets and surgical instrument casings: After adding antibacterial masterbatches, the antibacterial rate reaches 99.99%, reducing the risk of cross-infection within the hospital.
Food packaging
Food storage containers and beverage bottles: Extend the shelf life of food and reduce spoilage caused by bacterial contamination.
Household goods
Baby bottles and tableware: Inhibit bacterial growth and ensure children's health.
