What chemical components make WPC resistant to rot and insects?

Wood-Plastic Composite (WPC) is renowned for its durability and resistance to rot and insects, making it a popular choice for outdoor applications. The key to this resistance lies in its unique chemical composition. WPC is typically made from a blend of wood fibers or flour and thermoplastics such as polyethylene, polypropylene, or PVC. These thermoplastics are inherently resistant to moisture and decay, which prevents rot. Additionally, the manufacturing process often includes additives like biocides and fungicides, which further enhance resistance to insects and fungal growth. The combination of these chemical components creates a material that is not only strong and durable but also highly resistant to environmental factors that typically degrade natural wood. This makes WPC an excellent alternative to traditional wood in applications where longevity and low maintenance are essential.