Thermoplastic resin composition and molded article thereof

A thermoplastic resin composition, comprising

• 100 parts by weight of a styrene-based resin and
• 3 to 6 parts by weight of a surface modifier,
• wherein the surface modifier is a nylon-based surface modifier,
• wherein the nylon-based surface modifier comprises polyamide 66 (PA 6.6),
• wherein the thermoplastic resin composition has a skewness (Rsk) of 0.8 to 1.3,
• wherein the styrene-based resin comprises one or more selected from the group consisting of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (a), and a methacrylate-aromatic vinyl compound-vinyl cyanide compound copolymer (d),
• wherein the styrene-based resin is free of an aromatic vinyl compound-vinyl cyanide compound copolymer (b) consisting of an aromatic vinyl compound and a vinyl cyanide compound,
• wherein the acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (a) comprises:
• an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (i) comprising:
• 40 to 60% by weight of acrylate rubber having an average particle diameter of 0.35 to 0.5 μm,
• 20 to 45% by weight of a first aromatic vinyl compound, and
• 10 to 20% by weight of a first vinyl cyanide compound, and
• an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (ii) comprising:
• 40 to 60% by weight of acrylate rubber having an average particle diameter of 0.05 to 0.25 μm,
• 20 to 40% by weight of a second aromatic vinyl compound, and
• 10 to 20% by weight of a second vinyl cyanide compound.