environmental stress cracking

Environmental stress cracking (ESC) occurs when a plastic material develops cracks due to the combined effects of internal stress and exposure to certain environmental factors like chemicals, UV light, or temperature fluctuations. These external conditions weaken the plastic's structure, causing it to crack over time even under normal use. ESC is common in plastics used in containers, piping, and outdoor products, where environmental exposure accelerates deterioration. Proper material selection and design can help prevent ESC, ensuring longer-lasting products by reducing internal stresses and minimizing contact with harmful environmental agents.