The warmer the temperature, the faster the adhesive will cure. The cure temperature is determined by the ambient temperature plus the exothermic heat generated during cure. Ambient temperature is the temperature of the air or material in contact with the adhesive. Air temperature is most often the ambient temperature unless the adhesive is applied to a surface with a different temperature. Generally, the adhesive cures faster when it is warmer.
Exothermic heat is produced by the chemical reaction during cure.
The amount of heat produced depends on the thickness and surface area of mixed adhesive. In a thicker mass, more heat is retained, causing a faster reaction and more heat. A contained mass of curing adhesive can quickly generate enough heat raise its temperature significantly above the ambient level and increase the curing rate. However, if the same quantity is-spread into a thin layer, exothermic heat is dissipated, and the ambient temperature determines the adhesive s cure time. The thinner the layer of curing adhesive, the less it is affected by exothermic heat, and the slower it cures.