Low-smoke halogen-free fire-resistant flame-retardant B1-level power cable and insulating material manufacturing method

The invention discloses a low-smoke halogen-free fire-resistant flame-retardant B1-level power cable and an insulating material manufacturing method, and relates to the technical field of cables and insulating materials, the technical scheme is that the low-smoke halogen-free fire-resistant flame-retardant B1-level power cable comprises a sheath, a plurality of cable core assemblies are arranged in the sheath, each cable core assembly comprises a copper core conductor, the copper core conductor is sleeved with a fire-resistant layer, and the outer portion of the fire-resistant layer is sleeved with a flame-retardant layer. The cable is characterized in that a fireproof layer is arranged on the outer side of the sheath, an insulating layer is arranged outside the fireproof layer in a sleeving mode, an oxygen isolation layer is arranged on the inner side of the sheath, a flame-retardant filling layer is arranged on the inner side of the oxygen isolation layer, and the space between the insulating layer and a wr