Polycarbonate/ABS composition, alloy, and preparation method thereof

The invention relates to a polycarbonate/ABS alloy with improved impact properties and heat resistance. The polycarbonate/ABS alloy is mainly used for solving a problem of polycarbonate/ABS alloy prepared via the prior art that balance of impact properties and heat resistance is impossible to achieve via using of a compatilizer. The polycarbonate/ABS composition comprises, by weight, a) 50 to 99 parts of polycarbonate with a weight-average molecular weight ranging from 2*10 to 8*10 g/mol; b) 1 to 50 parts of bulk polymerization ABS containing 1 to 10wt% of N-phenylmaleimide and 5 to 20% of rubber, wherein average particle size of the bulk polymerization ABS ranges from 1 to 10 m; and c) 0.01 to 1 part of an antioxidant. The polycarbonate/ABS composition is prepared via mixing extrusion. The preparation method is capable of solving the problem preferably, and the polycarbonate/ABS composition can be applied in industrial production such as automobile and household electrical appliance polycarbonate/ABS alloy.