How does the ratio of wood fibers to plastic influence the durability of outdoor armchairs?

The durability of outdoor armchairs made from wood-plastic composites (WPC) is significantly influenced by the ratio of wood fibers to plastic. A higher proportion of wood fibers can enhance the natural aesthetic and stiffness of the material, but it may also increase susceptibility to moisture absorption and fungal growth, reducing longevity. Conversely, a higher plastic content improves weather resistance, UV stability, and overall durability but may compromise the chair's rigidity and eco-friendly appeal.

Optimal performance is achieved with a balanced ratio, typically around 50-60% wood fibers and 40-50% plastic, which combines strength, moisture resistance, and aesthetic appeal. Manufacturers often adjust this ratio based on climate conditions—higher plastic for humid or extreme environments, and higher wood fibers for milder climates where natural looks are prioritized.

Testing shows that armchairs with a well-calibrated wood-to-plastic ratio withstand prolonged outdoor exposure better, resisting warping, cracking, and fading. For consumers, understanding this balance helps in selecting durable, low-maintenance outdoor furniture.