Mechanical and Viscoelastic Properties of Carbon Fibre Epoxy Composites with Interleaved Graphite Nanoplatelet Layer

The use of interleaving material with viscoelastic properties is one the most effective solutions to improve damping capacity carbon fibre-reinforced polymer (CFRP) laminates. Improving composite without threatening mechanical performance challenging and nanomaterials should lead target. In this paper, effect a nanostructured interlayer based on graphite nanoplatelets (GNPs) fracture toughness CFRP laminates has been investigated. High-content GNP/epoxy (70 wt/30 wt) coating was sprayed surface CF/epoxy prepregs at two different contents (10 40 g/m2) incorporated middle plane laminate. GNP areal weights behaviour Coupons low content showed 25% increase in trivial reduction storage modulus. Moreover, interlaminar shear strength (ILSS) (both mode I II) observed. alignment degree compaction reached during process were found be key parameters performances. By increasing compaction, mitigation drop achieved (−15%).