How do composite materials handle prolonged exposure to fertilizer runoff?

Composite materials are widely used in agricultural and environmental applications due to their strength, durability, and resistance to corrosion. However, prolonged exposure to fertilizer runoff can pose challenges. Fertilizers contain chemicals like nitrates, phosphates, and salts, which may degrade certain composites over time.

The resistance of composites depends on their composition. For instance, fiberglass-reinforced polymers (FRP) generally exhibit high resistance to chemical corrosion, while some organic matrix composites may weaken when exposed to acidic or alkaline conditions. Studies show that epoxy-based composites tend to perform better than polyester-based ones in harsh environments.

To mitigate degradation, manufacturers often apply protective coatings or use chemically inert resins. Regular inspections and maintenance can also extend the lifespan of composites in fertilizer-rich environments. Understanding these factors helps in selecting the right materials for agricultural infrastructure, reducing long-term environmental impact.