In order to solve the poor electric conductivity of composite material metals,an electric conductive functional layer can be added to the surface of composite materials to solve the problem of lightning strike damage of composite materials.Based on this condition,this paper designs two forms of lightning strike protection layer,namely composite material surface flame sprayed aluminum coating and bonded copper mesh surface film.The actual electric conduction effect and process performance of the two processes are evaluated for the dimensions of preparation process characteristics and conductivity performance through test plate manufacturing.The results show that the copper mesh surface film is superior to flame sprayed aluminum coating protective layer in terms of conductivity performance and process performance.
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