Thermoplastic Resin Composition, Preparation Method Therefor, And Molded Article Including Same

Abstract: The present disclosure relates to a thermoplastic resin composition, a method for preparing same, and a molded article including same and, more specifically, to a thermoplastic resin composition, a method for preparing same, and a molded article including same, the thermoplastic resin composition comprising: 100 parts by weight of a base resin including (A) 25 to 75 wt% of at least one copolymer selected from the group consisting of a copolymer (a-1) comprising alkyl acrylate rubber, an aromatic vinyl compound, and a vinyl cyanide compound, with an average particle diameter of 50 to 150 nm, a copolymer (a-2) comprising alkyl acrylate rubber, an aromatic vinyl compound, and a vinyl cyanide compound, with an average particle diameter of 150 nm (exclusive) to 600 nm (inclusive), and a copolymer (a-3) comprising alkyl acrylate rubber, an aromatic vinyl compound, and a vinyl cyanide compound, with an average particle diameter of 50 to 120 nm and (B) 25 to 75 wt% of at least one matrix resin selected from the group consisting of an aromatic vinyl compound-vinyl cyanide compound copolymer (b-1) and an (meth)acrylate ester polymer (b-2); and (C) 0.3 to 2 parts by weight of a pentaerythritol-based lubricant, wherein the graft copolymer (A-3) has an alkyl acrylate coverage (X) value of 65 wt% or higher as calculated by mathematical formula 1. Provided according to the present invention are a thermoplastic resin composition, a method for preparing same, and a molded article comprising same, wherein the thermoplastic resin composition exhibits processing performance comparable to or better than conventional PVC resins for calendaring, without the occurrence of flow marks, bubbles, and plate-out, thereby ensuring excellent surface quality and can be calendar-processed with existing calendaring equipment.

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