Double-layer mica tape structure for high-temperature fire-resistant cable and preparation method

The invention discloses a double-layer mica tape structure for a high-temperature fire-resistant cable and a preparation method, and the double-layer mica tape comprises a mica paper layer which is located at the center of the whole mica tape structure layer and is a base material; the first protection layer is located on the first surface of the mica paper layer, and the first protection layer sequentially comprises a first alkali-free glass cloth layer, a first flame retardant layer and a first fireproof agent layer from inside to outside; the second protection layer is located on the second surface of the mica paper layer, and the second protection layer sequentially comprises a second alkali-free glass cloth layer, a second flame retardant layer and a second fireproof agent layer from inside to outside; according to the double-layer mica tape structure for the high-temperature fire-resistant cable, the flame retardant layer and the fireproof agent layer are arranged, so that the cable has the fireproof an