Overview
Anti-reflective white masterbatch is a concentrated mixture of titanium dioxide (TiO2) or alternative white pigments dispersed in a polymer carrier resin. Primarily used as a cost-effective alternative to pure TiO2, it ensures uniform whiteness and opacity in plastic products while reducing processing complexities. Masterbatch formulations are tailored to specific polymer bases like polyethylene (PE), polypropylene (PP), or PET. The technology enables precise control over light diffusion properties, making it essential for applications requiring brightness uniformity and UV protection.
Physical and Chemical Properties
The masterbatch exhibits high thermal stability, typically withstanding processing temperatures up to 260°C. Its performance depends on the TiO2 grade (rutile or anatase) and surface treatments applied to prevent agglomeration. Key metrics include opacity (measured by contrast ratio) and yellowness index. Premium grades achieve >95% opacity at 0.3mm thickness. The material is chemically inert but may react with strong acids or alkalis at elevated temperatures.
Main Applications
Widely used in food packaging films (20-30% masterbatch content), where FDA compliance is critical. Injection-molded containers for cosmetics leverage its light-blocking properties to protect sensitive formulations. Technical applications include agricultural films (UV resistance) and synthetic fibers. Recent innovations focus on reducing TiO2 content (down to 15-20%) while maintaining performance through advanced dispersion technologies.
Safety and Storage
Classified as non-hazardous under normal handling conditions. Dust generation during bulk handling requires standard particulate controls (PPE, local exhaust ventilation). Storage life is typically 12 months in original packaging. Moisture absorption can affect dispersion quality, necessitating drying (2-4 hours at 60-80°C) before use in humidity-sensitive processes like PET fiber production.
B2B Procurement Guide
Industrial buyers should specify: 1) Carrier resin compatibility (match with base polymer), 2) TiO2 percentage (trade-off between cost and opacity), and 3) Processing aids (e.g., lubricants for high-speed extrusion). Sample testing is critical to verify dispersion quality under actual production conditions. Bulk purchases (20+ metric tons) typically attract 8-12% discounts. Consider regional suppliers for logistics efficiency with perishable grades.
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