How do resin processing temperatures influence the color stability of WPC?
The color stability of wood-plastic composites (WPC) is significantly influenced by resin processing temperatures. Excessive heat during extrusion or molding can cause thermal degradation of the polymer matrix, leading to discoloration or fading. Higher temperatures accelerate oxidative reactions, breaking down pigments and additives that maintain WPC's aesthetic appeal. Optimal temperature control is crucial to prevent yellowing or darkening, especially in light-colored WPC products. Manufacturers must balance processing efficiency with thermal limits to ensure long-term color consistency and product quality. Additionally, UV stabilizers and heat-resistant additives can mitigate temperature-induced color changes in WPC applications.
