What are the effects of iron oxide pigments on the thermal degradation rate of WPC planters?

Iron oxide pigments are widely used in wood-plastic composite (WPC) planters to enhance color stability and aesthetic appeal. However, their impact on the thermal degradation rate of WPC materials is a critical factor for outdoor applications. Studies indicate that iron oxide pigments can act as thermal stabilizers, slowing down the degradation process by absorbing UV radiation and reducing oxidative damage. This stabilization effect improves the longevity of WPC planters exposed to high temperatures and sunlight. Additionally, the type and concentration of iron oxide pigments play a significant role in determining the extent of thermal protection. Understanding these effects helps manufacturers optimize WPC formulations for better performance and durability in harsh environmental conditions.