This work analyzes the main features of structural adhesives influencing composite bonding with reference to examples from wind energy and transportation industry. The focus is set on innovative two-component epoxy- and polyurethane-based products, which maximize load transfer within the bond lines without damaging the composite substrates. Static and dynamic tests prove that the new adhesive systems provide superior toughness and fatigue resistance combined with high strength and stiffness. Moreover, results at diverse environmental conditions show a unique stability of mechanical properties over the whole service temperature range. Finally, advantages in terms of process savings (shorter curing at lower temperatures) are highlighted.
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