What are the effects of saltwater spray on the surface finish of polyethylene?
Saltwater spray can significantly affect the surface finish of polyethylene, a widely used polymer in marine and coastal applications. Prolonged exposure to saltwater leads to surface degradation, including discoloration, loss of gloss, and increased roughness. The chloride ions in saltwater accelerate oxidation, causing micro-cracks and reduced mechanical strength. Additionally, UV radiation in marine environments synergizes with saltwater to worsen polymer breakdown. While polyethylene is inherently resistant to moisture, frequent saltwater exposure compromises its durability, making protective coatings or UV stabilizers necessary for long-term use. Understanding these effects helps in selecting the right polyethylene grade for saltwater-exposed applications.
