How does the resistance to UV rays of polypropylene compare to polyethylene in outdoor tables?

When selecting materials for outdoor tables, UV resistance is a critical factor to consider. Polypropylene and polyethylene are two common plastics used in outdoor furniture, but their resistance to UV rays differs significantly.

Polypropylene is known for its excellent chemical resistance and durability, but it is more susceptible to UV degradation compared to polyethylene. Over time, prolonged exposure to sunlight can cause polypropylene to become brittle and lose its structural integrity. To mitigate this, manufacturers often add UV stabilizers to polypropylene, enhancing its resistance to sunlight.

On the other hand, polyethylene, particularly high-density polyethylene (HDPE), naturally offers better UV resistance. It is less prone to cracking or fading when exposed to sunlight, making it a more durable option for outdoor tables in sunny environments. However, polyethylene can still degrade over time without proper UV stabilizers.

In summary, while both materials can be used for outdoor tables, polyethylene generally outperforms polypropylene in terms of UV resistance. For long-lasting outdoor furniture, choosing polyethylene or UV-stabilized polypropylene is recommended to ensure durability and aesthetic appeal.