Adhesive is a substance for binding dissimilar materials by surface adhesion. The main functional principle of the adhesive is associated with the making of intermolecular bonds between it and the external surfaces of the materials being bound.
According to modern theories of adhesion, the durability of adhesive binding depends on 3 factors:
- Adhesive interaction of the surfaces to be bound to a binding (glued) interlayer.
- Cohesive strength of this layer and the material to be bound. In this case, cohesion is an intermolecular coupling of molecules of a physical body under the action of gravity force. Cohesion, thus, characterizes tensile at break of the very layer of the adhesive seam.
- Binding structure.