▎ 摘　　要

NOVELTY - Polycarbonate composition comprises polycarbonate, aliphatic aromatic copolyester, graphene dispersion liquid and optionally function auxiliary agent. USE - The polycarbonate composition is useful for three-dimensional printing (claimed), which is useful in photoelectric product, energy technology, function composite material, microelectronic device and biological medicine. ADVANTAGE - The polycarbonate composition: can reduce the temperature of the printing nozzle and the bottom plate; and has high printing size precision. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a method for preparing polycarbonate composition comprising mixing the polycarbonate, the aliphatic aromatic copolyester, the toughening agent and an optional functional assistant in a molten state, and extruding and pelletizing to obtain the polycarbonate composition; and (2) a method for a three-dimensional printing material comprising melt-extruding the polycarbonate composition, cooling, and orientation drawing to obtain three-dimensional printing materials.