Contact is essential
An adhesive must reach enough of the surface to interact effectively.
Surface energy affects wetting
Some materials are easier for liquids to spread across than others.
Curing builds internal strength
Solvent loss, cooling or chemical reactions can transform the adhesive after application.
Failure has two modes
A bond can fail at the interface or within the adhesive itself.
This page explains scientific concepts for general learning. It does not replace laboratory safety procedures, professional engineering guidance, or individualized medical advice.