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Innovative conductive polymer composite coating for aircrafts lightning strike protection
Author(s) -
Bedel Vincent,
Lonjon Antoine,
Dantras Éric,
Bouquet Michel
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48700
Subject(s) - materials science , composite material , epoxy , coating , lightning strike , electrical conductor , electrical resistivity and conductivity , composite number , ohmic contact , lightning (connector) , carbon fiber reinforced polymer , delamination (geology) , lightning arrester , electrical engineering , paleontology , power (physics) , physics , subduction , layer (electronics) , quantum mechanics , biology , tectonics , engineering
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 × 10 5 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.