THERMOPLASTICAL HAIR COMPOSITION WITH EXCEPTED HIGHNESS PERFORMANCE AND ABBREVIATIONS FOR ELECTROMAGNETICAL PURPOSES, PROCEDURES FOR THEIR MANUFACTURING AND THEIR PRESENTED SPRITTY GOODS

摘要

The present invention relates to a thermoplastic resin composition having excellent heat resistance and electromagnetic wave shielding capacity including (a) 100 parts by weight of a thermoplastic resin including 80 to 100 % by weight of a base resin and 0 to 20 % by weight of a reinforcing resin; (b) 2 to 60 parts by weight of a linear carbon fiber having an average diameter of 1 to 15 µm; (c) 1 to 5 parts by weight of a carbon nanofibril having a BET specific surface area of 200 to 400 m2/g; (d) 1 to 15 parts by weight of a carbon nanoplate; and (e) 1 to 25 parts by weight of a metal powder, a method of preparing the thermoplastic resin composition; and an injection-molded article manufactured using the thermoplastic resin composition.According to the present invention, a thermoplastic resin composition having excellent mechanical properties, such as impact strength, conductivity, heat resistance, appearance, and electromagnetic wave shielding capacity, especially having high shielding efficiency against high-frequency electromagnetic waves; a method of preparing the thermoplastic resin composition; and an injection-molded article manufactured using the thermoplastic resin composition may be provided. With these advantages, the injection-molded article manufactured using the thermoplastic resin composition may be used as automobile parts and electric and electronic parts, and the thermoplastic resin composition may be used as a substitute for aluminum alloys and magnesium alloys.