How does the resistance to thermal expansion differ between WPC and resin?

The resistance to thermal expansion varies significantly between Wood-Plastic Composite (WPC) and resin due to their distinct material compositions. WPC, a blend of wood fibers and plastic, exhibits moderate thermal expansion because the wood fibers absorb moisture and expand, while the plastic matrix softens under heat. Resin, on the other hand, is a synthetic polymer with lower thermal expansion resistance, as it tends to soften and deform more easily at high temperatures. The crystalline structure of resin makes it less stable under thermal stress compared to WPC, which benefits from the reinforcing effect of wood fibers. For applications requiring stability in fluctuating temperatures, WPC often outperforms resin due to its hybrid composition. Understanding these differences helps in selecting the right material for heat-exposed environments.