Gradient composites of nickel coated carbon fibre filled epoxy resin moulded under centrifugal force

摘要: Abstract Epoxy resin filled with nickel coated carbon fibres was prepared under centrifugal force in order to obtain functionally gradient materials. The fibre content evaluated from the density distribution of a sample direction force. electrical conductivity measured by either parallel plate electrode method or four-probe perpendicular direction. electrodes showed almost constant values regardless magnitude and distance bottom centre sliced specimen. In contrast, affected position conductivities both methods less than 10−3 S/cm for all samples. It confirmed optical microscopic observation that most aligned polymer composites were derived application.