Super-tough flame-retardant polycarbonate composite material and preparation method thereof

The invention discloses a super-tough flame-retardant polycarbonate composite material and a preparation method thereof.The polycarbonate composite material comprises polycarbonate and a flame-retardant-toughening additive, and the flame-retardant-toughening additive comprises an organic silicon polymer, a flame retardant and a toughening agent. A molecular main chain of the organic silicon polymer simultaneously comprises an inorganic structure of a Si-O bond and an organic structure of a benzene ring-Si-benzene ring, the organic silicon polymer has dual properties of an inorganic compound and an organic polymer, and as an additive, the organic silicon polymer not only can endow a substrate with good flame retardant property, high-temperature oxidation resistance and excellent mechanical property, but also is eco-friendly, and has a good application prospect. And no toxic or harmful gas is released to the environment in the combustion process, so that the halogen-free, low-toxicity and low-smoke flame-retard