How does wood-plastic composite (WPC) compare to resin in terms of thermal insulation?

When evaluating thermal insulation properties, Wood-Plastic Composite (WPC) and synthetic resin exhibit distinct characteristics rooted in their material composition. WPC, a blend of wood fibers and thermoplastics, generally provides moderate thermal insulation due to the natural insulating properties of wood. Its cellular structure traps air, reducing heat transfer, and typically offers a higher R-value (a measure of thermal resistance) than many pure plastics. However, its insulation performance can vary with the ratio of wood flour to polymer.

In contrast, pure synthetic resins (like polyethylene or polypropylene) are poorer insulators. They possess higher thermal conductivity, meaning they transfer heat more readily than WPC. For instance, the thermal conductivity of common resins often ranges between 0.15-0.25 W/m·K, while WPC can be lower, around 0.10-0.20 W/m·K, depending on its formulation. This makes WGB the superior choice for applications where reduced heat transfer is desired, such as decking, fencing, or outdoor furniture in varying climates. Resin, while durable and waterproof, tends to feel colder in winter and hotter in summer due to its conductive nature.

Ultimately, for projects prioritizing thermal insulation and a more comfortable surface temperature, WPC holds a clear advantage over pure resin materials.