What temperature does EVA degrade at?

EVA (Ethylene Vinyl Acetate) degrades at elevated temperatures, typically starting around 150°C (302°F) to 220°C (428°F). The exact temperature can vary depending on the specific formulation and presence of any additives or stabilizers. Here is a more detailed explanation:

1. Thermal Degradation Onset: EVA begins to degrade thermally at around 150°C to 160°C (302°F to 320°F). At this temperature, the material starts to lose its mechanical properties and begins to break down chemically.

2. Significant Degradation: More significant degradation of EVA occurs at higher temperatures, around 220°C (428°F). At this point, the material undergoes substantial chemical changes, leading to a breakdown of the polymer structure and release of by-products such as acetic acid.

3. Complete Degradation: At even higher temperatures, the degradation process accelerates, leading to complete breakdown and charring of the material.

For practical applications, it is crucial to consider these temperatures to avoid compromising the integrity and performance of EVA-based products.