How does the durability of PVC compare to polyethylene?

When comparing the durability of PVC (polyvinyl chloride) and polyethylene, several factors come into play, including strength, flexibility, and resistance to environmental conditions. PVC is known for its rigidity and high tensile strength, making it ideal for applications requiring structural integrity, such as pipes and window frames. However, it can become brittle over time when exposed to UV light or extreme temperatures unless additives are included to enhance its durability.

On the other hand, polyethylene is more flexible and resistant to impact, making it suitable for products like plastic bags, containers, and tubing. It also exhibits excellent resistance to moisture and chemicals, which contributes to its longevity in harsh environments. However, polyethylene is less rigid than PVC and may deform under heavy loads or high temperatures.

In summary, PVC excels in applications requiring rigidity and structural strength, while polyethylene is better suited for flexible, impact-resistant uses. The choice between the two depends on the specific requirements of the application and the environmental conditions they will face.