Innovative conductive polymer composite coating for aircrafts lightning strike protection

Abstract

A new kind of high electrical conductive epoxy coating with low filler rate was investigated for lightning strike protection (LSP) of carbon fiber reinforced polymer (CFRP). The coating without CFRP substrate was firstly studied. The influence of silver submicronic wires (AgSWs) with a high aspect ratio on the electrical behavior is observed; that is, the electrical resistivity evolution, the current density value, and the electrical conduction mechanisms as function of temperature. The preponderant electrical conduction mechanism is an Ohmic behavior. The higher level of conductivity obtained is 5.5 × 105 S m−1 for 9% vol of AgSWs. Lightning strike tests were carried out on an epoxy/AgSWs coating filled with 8% in volume (74 gsm) and deposited on a CFRP. The ultrasonic testing after lightning strike on coated CFRP shows no structural delamination and demonstrates the interest of this new route for an efficient LSP. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48700.

Dynamic electrical and mechanical properties of epoxy/silver nanowires composites

“…A previous study was carried out with a correct geometry of the samples and permitted to obtain higher value of the conductivity: 5.5.10 5 S.m 1 at 60°C for 9 vol% of AgNWs 55 . This value is one of the highest reported in the literature for this kind of composite with such a low filler ratio.…”

Nickel‐Decorated Silver Nanowires for Polymer‐Based Magnetoelectric Composite

“…Silver nanowires were produced according to previous works. [25,26] They were washed to eliminate all surface PVP residue and dispersed in 1,2 butanediol. Nickel ions came from hydrated acetate Ni(CH 3 COO) 2 .4H 2 O.…”

“…Independently, we mastered an easier process to synthesize a large amount of high-ξ silver wires (Ag NWs, ξ % 250). [25,26] To combine the large amount of high-ξ silver wires and the good magnetic properties of nickel, we present here a polyol route to decorate silver nanowires with nickel. The final aim of this work is to produce a high amount of high-aspect-ratio nickel-decorated silver nanowires for the fabrication of polymer-based magnetoelectric composites and study the influence of the morphology over the magnetoelectric coupling.…”

Ageing of PEEK/Carbon Fibre composite under electronic irradiations: Influence on mechanical behaviour and charge transport

“…Moreover, these charging phenomena are highly impacted by polymer ageing which can induces evolutions of its electrical properties and amplify electron accumulation. Optimisation of electrical properties of polymers is an important research axis for several application fields like anti-static materials [11], flexible electronics [12,13] or aerospace industry [14,15].…”