What are the differences in thermal deformation between PVC and polypropylene tables?

When comparing PVC and polypropylene tables, thermal deformation is a critical factor to consider. PVC (Polyvinyl Chloride) has a higher coefficient of thermal expansion, meaning it expands and contracts more significantly with temperature changes. In contrast, polypropylene exhibits better heat resistance and lower thermal deformation, making it more stable in varying temperatures. PVC tables may warp or distort under high heat, while polypropylene maintains its shape better. This difference is due to polypropylene's semi-crystalline structure, which provides greater dimensional stability. For outdoor or high-temperature environments, polypropylene tables are often the superior choice due to their reduced thermal deformation.