Ageing resistances of lattice structures in order to increase the bonding strengths of adhesive-bonded joints

In the Design2Bond project (IGF 21138 N), investigations were conducted into the use of complex lattice structures in order to improve the adhesive bonding suitability of plastics with poor adhesive bondability. When adhesives fl ow around these three-dimensional lattice structures, this results in positive-locking joints whose strengths no longer depend solely on the adhesive bonding properties of the utilised materials but instead on the geometry of the lattice too. In this respect, the strengths of such joints mostly exceed the strengths of plasma-pretreated adhesive-bonded joints. In this publication, the usability of such structures is proven by means of mechanical characterisation in the form of tensile and tensile shear tests as well as additional climate change tests.