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3. Theoretical aspects of wood bonding. Adhesion phenomena
3.1 Glues and adhesives, definitions
An adhesive is a chemical product used to join two materials. Whether liquid or solid, it is applied in a fluid state to the material(s) to be joined, where it must first adhere through various physico-chemical phenomena that we will now examine: this is the phenomenon of adhesion or bonding.
The materials are then joined together, and the glue hardens or dries, through various physical or chemical phenomena; this is known as curing or drying, or glue setting.
Glues and adhesives are therefore characterized by two essential elements: adhesion and the final cohesion of the adhesive joint.
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Theoretical aspects of wood bonding. Adhesion phenomena