What are the differences in chemical resistance between polyethylene and PVC outdoor chairs?

When selecting outdoor chairs, understanding the chemical resistance of materials like polyethylene and PVC is crucial for durability. Polyethylene, a thermoplastic polymer, offers excellent resistance to acids, alkalis, and most solvents, making it ideal for harsh environments. However, it can degrade under prolonged exposure to UV light unless treated with stabilizers.

PVC (polyvinyl chloride), on the other hand, is highly resistant to chemicals, oils, and fats, but it may become brittle over time when exposed to extreme temperatures or certain solvents. PVC chairs often include additives to enhance UV and weather resistance, but they can still be less flexible than polyethylene.

In summary, polyethylene excels in general chemical resistance and flexibility, while PVC provides superior resistance to oils and fats but may require more maintenance to prevent brittleness. Your choice depends on the specific environmental conditions and usage requirements.