How do artists address polypropylene’s susceptibility to UV degradation in outdoor art?

Artists working with polypropylene for outdoor installations face the challenge of UV degradation, which can cause discoloration, brittleness, and structural weakening over time. To address this, many incorporate UV-resistant additives during the manufacturing process, such as hindered amine light stabilizers (HALS) or carbon black, which absorb or scatter harmful radiation. Others apply protective clear coatings containing UV inhibitors, creating a barrier against sunlight exposure. Some artists strategically use thicker polypropylene sections in sun-exposed areas or design pieces with replaceable components. Innovative approaches include embedding the material with mineral-based pigments that reflect UV rays or positioning artworks in partially shaded locations. Regular maintenance, including cleaning and recoating, further extends the lifespan of polypropylene outdoor art while preserving its aesthetic qualities.