How does polypropylene compare to PVC in terms of resistance to decay?

When comparing polypropylene and PVC in terms of resistance to decay, both materials exhibit strong durability, but they differ in specific applications and environmental conditions. Polypropylene is known for its excellent resistance to chemical corrosion, moisture, and biological decay, making it ideal for outdoor and industrial uses. It does not absorb water, which prevents microbial growth and degradation over time.

On the other hand, PVC (polyvinyl chloride) is also highly resistant to decay, particularly in environments where moisture and chemicals are present. However, PVC can degrade when exposed to UV light over extended periods unless it is treated with stabilizers. Both materials are widely used in construction, plumbing, and packaging due to their decay-resistant properties, but polypropylene is often preferred for applications requiring higher flexibility and chemical resistance, while PVC is favored for its rigidity and cost-effectiveness.

In summary, polypropylene and PVC both offer excellent decay resistance, but the choice between them depends on the specific environmental conditions and application requirements.