Electroconductive fibrous material

摘要

Disclosed is an electroconductive fibrous material comprising a composite yarn comprising a core yarn composed of at least one kind of fiber selected from organic fibers and inorganic fibers and a covering layer composed of a ribbon-shaped metal fiber spirally wound around the core yarn, the coverge of the ribbon-shaped metal fiber to the core yarn being at least 50%. The electroconductive fibrous material is used for a parabolic reflecting body of a parabolic antenna and as an electromagnetic were shielding material. A collapsible parbolic antenna is also disclosed which has a collapsible framework comprising a central shaft, a plurality of wing ribs rotatably pivoted on one point of the central shaft, a bracket slidably attached to the central shaft and a plurality of push-up ribs for connecting the wing ribs to the bracket, and a sheet supported by the wing ribs to cover spaces between adjacent wing ribs, which sheet is made of the electroconductive fibrous material.