FIELD: chemistry.
SUBSTANCE: invention relates to production of composite materials for use in aerospace industry and relates to composite materials with high specific electric conductivity in z-direction. Curable composite material includes two or more layers of reinforcing carbon fibers which are poured or impregnated with a curable matrix resin, and an interlayer area containing at least conducting nanosized particles, particularly carbon nanotubes dispersed throughout the matrix resin, and a nonwoven carbon veil. Veil is immersed in the curable matrix resin in the interlayer area. Conductive nanosized particles and nonwoven carbon veil are the only conducting components in the interlayer area. According to another embodiment, the interlayer region additionally contains polymer reinforcing particles. Also disclosed is a method of making composite materials and structures.
EFFECT: invention provides increased specific electrical conductivity of fiber-reinforced polymer composites in order to meet aircraft protection requirements against lightning.
30 cl, 8 dwg, 9 tbl
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