Which of the following is a defect caused by incorrect application temperatures?

The phenomenon referred to as "failure to cure" occurs when the application temperature is not within the recommended range for a specific coating. Coatings have optimal temperature ranges for application to ensure proper chemical reactions take place during the curing process. When the temperature is too low, the curing agents may not activate correctly, resulting in incomplete or improper curing of the coating. This can lead to various issues, including poor adhesion, reduced durability, and compromised protective qualities of the coating.

In contrast, improved adhesion, accelerated curing, and increased flexibility are outcomes that tend to occur within the appropriate application temperature range rather than as a result of incorrect temperatures. Therefore, understanding the critical role of temperature in the curing process is essential for achieving the desired performance of coatings.