What are the differences in thermal expansion coefficients between WPC and aluminum tree boxes?
When comparing WPC (Wood-Plastic Composite) and aluminum tree boxes, one critical factor to consider is their thermal expansion coefficients. WPC, a blend of wood fibers and plastic, tends to have a higher thermal expansion coefficient than aluminum. This means WPC expands and contracts more significantly with temperature changes, which can affect its durability and fit over time. Aluminum, on the other hand, has a lower thermal expansion coefficient, making it more stable in varying temperatures. For outdoor applications like tree boxes, this difference is crucial—aluminum may offer better long-term structural integrity, while WPC requires design accommodations to account for expansion. Understanding these properties helps in selecting the right material for your project.
