What are the differences in fire resistance between WPC and phenolic resin outdoor tree boxes?

When comparing the fire resistance of WPC (Wood-Plastic Composite) and phenolic resin outdoor tree boxes, several key differences emerge. WPC, a blend of wood fibers and plastic, typically has moderate fire resistance due to its plastic content, which can melt or ignite under high heat. However, some WPC products are treated with flame retardants to improve performance.

Phenolic resin, on the other hand, is inherently more fire-resistant. As a thermosetting plastic, it chars rather than melts when exposed to flames, providing better protection against fire spread. This makes phenolic resin tree boxes a safer choice for high-risk areas.

Factors like material composition, additives, and manufacturing processes also influence fire performance. Always check fire ratings (e.g., ASTM E84) and local regulations when selecting materials for outdoor applications.