INTERFACIAL ADHESION BETWEEN CARBON FIBRE THERMOPLASTIC COMPOSITES AND FOAM IN SANDWICH STRUCTURES

摘要

Sandwich structures comprising carbon fibre thermoplastic composite facesheets and polymeric foam cores provide high mechanical performance in combination with light weight. In order to ensure an effective stress transfer between the composite facesheet and the foam core, a strong interfacial adhesion between the two materials is a prerequisite. In this study, several investigations of the skin-core interface of sandwich structures are conducted, including physico-chemical interactions based on surface energies and mechanical interlocking influenced by foam surface morphology. The findings were compared against the experimentally measured adhesion forces via peel-off tests. The results suggest that both factors have a significant influence on the skin-core adhesion of the studied systems.