FIRE-RESISTANT CABLE

摘要

The present invention relates to a fire-resistant cable. The fire-resistant cable comprises a heat-expandable polyolefin resin layer and a ceramic mica tape layer. The heat-expandable polyolefin resin layer is formed on an outer surface of an insulated conductor, and self-expands as the temperature rises, to form a charring layer having an air gap. The ceramic mica tape layer is formed on the outer surface of the heat-expandable polyolefin resin layer, and is made of a ceramic mica tape, wherein ceramic fibers are attached to an inner surface of the mica tape. The fire-resistant cable comprises said heat-expandable polyolefin resin layer and said ceramic mica tape layer, such that the ceramic mica tape layer prevents heat from quickly penetrating into the fire-resistant cable and minimizes the deformation of the cable, and the heat-expandable polyolefin resin layer prevents the transfer of heat and thus effectively prevents the temperature of the interior of the cable from rising excessively when the cable is exposed to a high temperature upon the outbreak of a fire or the like.