AMPP Certified Coatings Inspector (CIP Level 2) Certification Practice Exam

A convertible cured coating refers to a type of coating that can transition between curing mechanisms, typically from a reaction occurring through either a chemical or physical process. Polyurethanes are a prime example because they often cure through both moisture and heat, allowing for versatility in application and curing conditions.

Their structure allows for the possibility of reaction with moisture in the air after being applied, in addition to the potential for heat to accelerate the curing process. This flexibility can be advantageous in various environments and applications, accommodating ranges of humidity and temperature, which can affect curing behavior.

In contrast, the other coatings mentioned have more defined curing processes. Vinyl coatings are typically solvent-based and require solvent evaporation for curing. Bituminous coatings cure primarily through solvent loss or oxidation, and chlorinated rubber coatings also have a more specific curing mechanism through evaporation of solvents. None of these options demonstrate the same dual curing approach present in polyurethanes.