How do composite materials handle prolonged exposure to fireworks residue?

Composite materials are widely used in industries requiring high strength-to-weight ratios and corrosion resistance. However, prolonged exposure to fireworks residue can pose unique challenges. Fireworks contain oxidizing agents, metals, and sulfur compounds that may degrade composites over time.

The impact depends on the composite's matrix (e.g., epoxy, polyester) and reinforcement (e.g., carbon fiber, fiberglass). Resins with high chemical resistance, like vinyl ester, fare better against acidic residues. Meanwhile, carbon fiber composites generally outperform fiberglass in resisting oxidative damage from metallic particles.

To mitigate degradation, protective coatings or hybrid composites are often employed. Regular cleaning after exposure is also recommended to prevent residue buildup. Research shows that while short-term exposure causes minimal harm, repeated contact may reduce tensile strength by up to 15-20% over several years.

For critical applications near firework displays, material selection should prioritize chemical inertness and include sacrificial layers when possible. Accelerated aging tests simulating decades of exposure help engineers predict long-term performance.