How does the thermal expansion of polypropylene compare to PVC in outdoor tables?

When selecting materials for outdoor tables, understanding thermal expansion is crucial for durability and performance. Polypropylene and PVC are two popular choices, but they behave differently under temperature changes. Polypropylene has a higher coefficient of thermal expansion compared to PVC, meaning it expands and contracts more significantly with temperature fluctuations. This characteristic makes polypropylene more susceptible to warping or cracking in extreme outdoor conditions. On the other hand, PVC exhibits lower thermal expansion, providing greater dimensional stability over time. For outdoor tables exposed to varying climates, PVC may offer better long-term performance, while polypropylene could require more frequent maintenance or replacement. Consider these factors when choosing the right material for your outdoor furniture needs.