What are the fire-resistant additives used in PVC public art sculptures?
PVC public art sculptures require fire-resistant additives to ensure safety and longevity, especially in high-traffic areas. Common flame retardants used in PVC include antimony trioxide, aluminum hydroxide, and phosphate esters. These additives work by reducing flammability and slowing down the spread of fire. Antimony trioxide acts as a synergist with halogenated compounds, while aluminum hydroxide releases water vapor to cool the material. Phosphate esters form a protective char layer. Choosing the right additive depends on the sculpture's design, location, and regulatory requirements. Proper application of these materials helps maintain both artistic integrity and public safety.
