Ultra-low temperature-resistant polycarbonate resin composition

The invention provides a polycarbonate resin composition which comprises the following components in parts by weight: 100 parts of polycarbonate, 1.5-5 parts of modified silica gel, 0.1-0.5 part of antioxidant and 0.08-0.1 part of flame retardant. All the components in the provided polycarbonate resin composition have good compatibility, so that the polycarbonate resin composition can be used for preparing a polycarbonate resin special product under the environment that the temperature is as low as minus 70 DEG C; simultaneously, a low-temperature impact modifier and the antioxidant produce the synergy, thereby increasing and recovering the original molecular weight and the intrinsic viscosity of the polycarbonate during the low-temperature processing and forming process, increasing the low-temperature impact strength, the bending strength, the tensile strength and other performances, simultaneously enhancing the low temperature resistance, being difficult to produce cracks and giving the performances of fire