Methods for developing carbon composites with functional properties

Abstract

The paper discusses the results of experimental analyses of carbon tape properties for FibArmTape-230/300 and LUP grades, and carbon composites based on the same. Metal coatings were applied to carbon tapes by magnetron sputtering. To apply metal coatings, two magnetron sputters were used: a laboratory MIR-2 and an industrial MMR-188M. Metal coatings were applied using stainless steel and copper targets. The values of breaking force under tension, relative elongation, and filament diameter before and after applying the metal coating, as well as the carbon composite interlayer shear strength, have been experimentally determined. The parameters of electrical conductivity, thermal conductivity, and shielding properties have been assessed. It has been found that applying a copper coating on carbon tapes allows to increase their thermal conductivity coefficient almost twice and decreases their heat capacity. The electrical resistance of metal-coated carbon tapes and carbon composites was lower than that of the same uncoated materials. The electrical conductivity of the LUP carbon tape, both with a metal coating of different thickness and without a coating, was higher than that of FibArm Tape-230|300 carbon tape. Metal coating on carbon tapes allows to improve significantly the carbon composites shielding properties.