| 摘要 |
PURPOSE: A semitransparent polycarbonate-based resin composition is provided, to improve the thin film impact strength with deterioration of the transparency of a polycarbonate resin by introducing a polyurethane resin whose refractive index is similar to that of a polycarbonate resin to a polycarbonate resin as a reinforcement. CONSTITUTION: The semitransparent polycarbonate-based resin composition comprises 100 parts by weight of a thermoplastic polycarbonate resin; 5-30 parts by weight of a polyurethane resin; and optionally an inorganic filler selected from the group consisting of glass fiber, carbon fiber, talc, silica, mica and alumina or at least one additive selected from the group consisting of a UV absorbing agent, a heat stabilizer, an antioxidizing agent, a flame retardant, a lubricant, a dye and a pigment. Preferably the polyurethane resin has a weight average molecular weight of 50,000-500,000 g/mol and a hardness of Shore A 75 to Shore D 55, and is selected from the group consisting of a polyester-type polyurethane resin, polyether-type polyurethane resin and a polycaprolactam-type polyurethane resin. |
