What are the effects of prolonged UV exposure on WPC structural integrity?
Prolonged UV exposure significantly affects the structural integrity of Wood Plastic Composites (WPC). Over time, ultraviolet radiation breaks down the polymer matrix in WPC, leading to surface discoloration, reduced mechanical strength, and increased brittleness. The lignin in wood fibers also degrades under UV light, accelerating material fatigue. This results in cracks, warping, and loss of load-bearing capacity. Manufacturers often add UV stabilizers to mitigate these effects, but unprotected WPC products exposed to sunlight for extended periods will experience faster deterioration, shortening their usable lifespan. Regular maintenance and protective coatings can help delay UV-induced damage.
