What are the effects of prolonged UV exposure on polypropylene bench strength?
Prolonged UV exposure significantly weakens polypropylene benches, a common material in outdoor furniture. Ultraviolet radiation breaks down the polymer chains in polypropylene, causing brittleness, discoloration, and reduced tensile strength over time. Studies show that after months of direct sunlight, polypropylene can lose up to 50% of its original strength, making benches prone to cracking under stress. Manufacturers often add UV stabilizers to slow this process, but unprotected polypropylene degrades rapidly in sunny climates. Regular maintenance and protective coatings can extend the lifespan of polypropylene outdoor furniture. For long-term durability, consider UV-resistant alternatives like high-density polyethylene or metal-framed designs with polypropylene accents.
