| abstract |
A photovoltaic cable sheath material and a preparation method therefor. The photovoltaic cable sheath material comprises, in weight percentage, 20-40% of hyperbranched polyethylene, 40-60% of a flame retardant, 5-10% of maleic anhydride grafted EVA, 1-5% of a stabilizer, 1-5% of a silicone master batch and 1-5% of a silane coupling agent. The photovoltaic cable sheath material has extremely high insulation resistance, excellent flame retardancy, good mechanical strength and smoke density light transmittance, and can fully meet the performance requirements in the IEC62930 standard by means of single vertical combustion. |