What are the effects of resin oxidation on the structural performance of aged WPC tree boxes?

Resin oxidation in aged wood-plastic composite (WPC) tree boxes can significantly degrade their structural performance over time. As the resin component oxidizes, it weakens the bond between wood fibers and plastic matrices, leading to reduced load-bearing capacity, increased brittleness, and susceptibility to cracking. Environmental factors like UV exposure and moisture accelerate this process, causing discoloration and surface deterioration. Over time, oxidized WPC tree boxes may lose dimensional stability, compromising their functionality in urban landscaping. Preventive measures, such as UV stabilizers and antioxidant additives, can mitigate these effects, extending the lifespan of WPC tree boxes in outdoor applications. Understanding these oxidation mechanisms is crucial for improving material formulations and maintenance practices.