Application of Titanium Dioxide in the Plastic Industry

The application of titanium dioxide (TiO ₂) in the plastic industry is mainly reflected in the following aspects: as a core pigment, it can significantly improve the whiteness and covering power of plastic products, achieve high light reflectivity through scattering and absorption of light, especially in yellowing prone resins, fine particle titanium dioxide with a diameter of 0.15-0.3 μ m can produce a blue background phase to enhance the covering effect; At the same time, titanium dioxide effectively delays plastic aging and improves weather resistance by absorbing ultraviolet light. Outdoor products need to use rutile type and be supplemented with surface treatment technologies such as silicon, aluminum, and zirconium to prevent pore problems caused by water evaporation during high-temperature processing; In terms of thermal stability, titanium dioxide can improve the performance of plastics in high-temperature environments by reducing photochemical activity through surface modification techniques (such as inorganic coating), ensuring the mechanical strength and color durability of products under complex conditions. The application strategies of titanium dioxide vary for different types of plastics – polyolefins require attention to dispersibility and anti discoloration properties, PVC hard materials rely on the anti powdering ability of titanium dioxide, while ABS focuses on balancing optical and mechanical properties. In typical applications, the amount of titanium dioxide added is usually controlled at 3%~5% to balance economy and functionality, and the concentration in special colorants can reach 40%~70%; By optimizing particle size distribution (such as 2-35 μ m) and surface treatment processes, Bontecn Group China titanium dioxide has achieved high whiteness, weather resistance, and processing stability in fields such as plastic films, door and window profiles, and automotive components.