How do polypropylene outdoor chairs compare to PVC in terms of thermal expansion?
Polypropylene and PVC are popular materials for outdoor chairs, but they behave differently under temperature changes. Polypropylene has a higher thermal expansion rate than PVC, meaning it expands and contracts more with temperature fluctuations. This can lead to slight warping or dimensional changes over time, especially in extreme climates. PVC, on the other hand, has lower thermal expansion, offering better dimensional stability. However, polypropylene is often preferred for its lightweight, UV resistance, and recyclability, while PVC is heavier and less eco-friendly. Choosing between them depends on your climate and priorities for durability versus sustainability.
