Thermoplastic resin composition and article produced therefrom

1. A thermoplastic resin composition comprising:

about 100 parts by weight of a polycarbonate resin;

about 1 to about 15 parts by weight of a rubber-modified vinyl copolymer resin;

about 10 to about 30 parts by weight of a phosphorus flame retardant;

about 3 to about 12 parts by weight of calcium carbonate;

about 5 to about 40 parts by weight of talc; and

about 0.001 to about 5 parts by weight of a black pigment,

wherein a weight ratio of calcium carbonate to talc ranges from about 1:1.5 to about 1:6 and the black pigment has an average particle size of about 10 nm to about 24 nm.

2. The thermoplastic resin composition according to claim 1 , wherein the rubber-modified vinyl copolymer resin comprises a rubber-modified aromatic vinyl graft copolymer obtained by grafting an aromatic vinyl monomer and an alkyl (meth)acrylate monomer to a rubber polymer.

3. The thermoplastic resin composition according to claim 1 , wherein the phosphorus flame retardant comprises at least one selected from among phosphate, phosphonate, phosphinate, phosphine oxide, and phosphazene compounds.

4. The thermoplastic resin composition according to claim 1 , wherein the rubber-modified vinyl copolymer resin is present in a lower amount than the phosphorus flame retardant.

5. The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin composition has a melt-flow index (MI) of about 30 g/10 min to about 50 g/10 min, as measured at 220° C. under a load of 5 kgf in accordance with ASTM D1238, and a notched Izod impact strength of about 5 kgf·cm/cm or more, as measured on a ⅛″ thick specimen in accordance with ASTM D256.

6. The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin composition has a glass transition temperature of about 82° C. to about 90° C. and a flame retardancy of V1 or higher, as measured on a 1.0 mm thick specimen in accordance with the UL94 standard.

7. The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin composition has a coefficient of linear expansion of about 20 cm/cm° C. to about 45 cm/cm° C., as measured on a 6.4 mm thick flexural specimen at 90° C. in accordance with ASTM D696, and a longitudinal length of about 390 mm to about 400 mm, as measured on a specimen prepared by injection molding at a temperature of 260° C. and at each holding pressure (30 bar, 50 bar and 70 bar) using a luminous mold having a size of 400 mm×100 mm×10 mm (length×width×thickness) so as not to form burrs, and left at 23° C. for 24 hours.

8. The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin composition has a gloss (60°) of about 95% to about 100%, as measured on an injection molded specimen at an angle of 60° in accordance with ASTM D523, and a luminance (L*) of about 90 to about 100, a* of about −0.1 to about 0.3, and b* of about −0.1 to about 0.3, as measured on a 3.2 mm thick specimen in accordance with ASTM D2244.

9. A molded article formed from the thermoplastic resin composition according to claim 1 .

10. The molded article according to claim 9 , wherein the molded article is a plastic member of a housing of an electronic product, the housing comprising a metal frame and the plastic member adjoining at least one surface of the metal frame.