NOVELTY - An insulating material comprises (pts.wt.) ethylene vinyl acetate copolymer EVA2803G (15-20), ethane-octylene elastomer POE DF810 (15-20), ethylene vinyl acetate copolymer EVA6110M (20-25), aluminum hydroxide fire retardant (30-35), thermoplastic elastomer (5-8), stabilizing agent AD-160 (0.5-1), crosslinking agent triallyl isocyanurate (0.5-1), halogen-free fire retardant red phosphorus (2-3), and high density polyethylene (3-5).    USE - Insulating material for photovoltaic cable.    ADVANTAGE - The material has high fire resistance completely meeting the need of Tropospheric Ultraviolet and Visible (TUV) vertical combustion; good weather resistance meeting the need of TUV low-temperature - 40 degrees C/4H; and good physical performance. The extension ratio can reach 250-300%. The tensile strength is remained to be more than 10.5 MPa.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of insulating material comprising: (A) mixing the aluminum hydroxide fire retardant, the ethylene vinyl acetate copolymer EVA2803G, the ethane-octylene elastomer POE DF810, the ethylene vinyl acetate copolymer EVA6110M, the thermoplastic elastomer, the high density polyethylene, the stabilizing agent AD-160, the crosslinking agent triallyl isocyanurate with the halogen-free fire retardant red phosphorus; (B) placing the above mixed material in a mixing tank to stir for 5-10 minutes, then, pouring the mixed raw material in a banburying tank; (C) material clearing and material overturning action for 8-10 times in the middle; mixing the mixed material into material paste when the banburying temperature is 165-170 degrees C and the banburying time is 25-28 minutes; (D) conveying the mixed material paste to a forcible feeder tank, extruding the material paste to a high-temperature extruder double-step threaded rod at 110-120 degrees C; and (E) plastifying at high temperature through the double-step threaded rod, enabling the plastic paste to enter a single threaded rod at 130-135 degrees C to plastify again, cutting bar-shaped material into finished plastic particles via a granulator after plastifying, where the diameter of the particle is 3 mm.