Structural design to improve the electromagnetic shielding effectiveness of conductive core-spun yarn woven composites

The main objective of this paper is to explore structural design of conductive core-spun yarn woven composites to improve their electromagnetic shielding effectiveness. Conductive core-spun yarns were woven into single-layer and double-layer fabrics with different structural parameters, and their electromagnetic shielding effectiveness was compared. Between different structures, in general, woven composites with high compact ratio have high shielding effectiveness. However, for honeycomb structures, due to their honeycomb appearance, they exhibit a higher electromagnetic shielding effectiveness when its compact ratio is slightly lower than other structures. The electromagnetic shielding effectiveness of double-layer woven composites is higher than that of single-layer woven composites. In double-layer woven composites, especially double-layer honeycomb woven composites with opposite sides, their electromagnetic shielding effectiveness is the best. The electromagnetic shielding effectiveness of woven composites can be improved through structural design. For example, the compact rate of the composite is increased, the surface of the composite is formed into a concave and convex shape, the number of conductive core-spun yarns per unit area is increased, and a double-layer or multi-layer structure with intermediate air layer and multiple reflections is formed.