houtplastic

Houtplastic, also known as wood-plastic composite (WPC), is a composite material made from a combination of wood fibers or wood flour and a thermoplastic polymer. The wood component provides rigidity and texture, while the plastic matrix binds the material and provides moisture resistance. WPC aims to combine the natural appearance of wood with the durability and low maintenance of plastics, making it a common choice for outdoor structures.

Common polymers include polypropylene, polyethylene, polystyrene, or PVC. The typical composition ranges from roughly 50 to 70% wood by weight and 30 to 50% plastic, with additives such as UV stabilizers, coupling agents to improve adhesion between wood and plastic, lubricants, colorants, and flame retardants. The material is usually produced by compounding and forming through extrusion, injection molding, or compression molding.

Properties: WPC boards are generally resistant to rot, decay, and insect attack and require less maintenance than solid wood, as they do not need regular painting or staining. They tend to be dimensionally stable and have good moisture resistance. Drawbacks can include higher initial cost, surface scratching and fading with exposure to sunlight, and moisture migration at cut ends if not properly sealed. They can also exhibit creep under long-term load and may expand and contract with temperature changes.

Applications: The most common use is outdoor decking and railings, but WPC is also used for fencing, cladding, outdoor furniture, landscaping elements, and some interior trim components or automotive components. The look can resemble natural wood, with a variety of finishes and textures available.

Environmental aspects: WPC is often made from recycled wood fibers and post-consumer plastics. Its environmental impact depends on the production process, the ratio of wood to plastic, and end-of-life handling, including recycling potential. The use phase generally offers lower maintenance demands, reducing cleaning chemicals and coatings.