Thermoplastic resin composition and article manufactured using the same

Abstract

The present invention relates to a thermoplastic resin composition and a molded article made therefrom, comprising (A) 20% to 40% by weight of an acrylonitrile-butadiene-styrene graft copolymer having an average particle size of 250 nm to 350 nm of a rubbery polymer; and (B) 60% to 80% by weight of a styrene-acrylonitrile copolymer containing 30% to 40% by weight of an acrylonitrile-derived component, and (C) 0.1% to 0.5% by weight of an oil having a triglyceride structure, based on 100 parts by weight of a base resin.

Description

Technology Field

[0001] The invention relates to a thermoplastic resin composition and a molded article manufactured therefrom. Background Technology

[0002] Thermoplastic resins, which are being widely applied in the electrical and electronic, automotive, and construction materials sectors recently, are rapidly replacing traditional glass and metal. Consequently, there is an increasing demand for thermoplastic resins capable of achieving excellent impact resistance, weather resistance, moldability, and high-quality appearance.

[0003] As thermoplastic resins, rubber-modified aromatic vinyl copolymer resins, such as acrylonitrile-butadiene-styrene (ABS) copolymer resin, are widely used as interior and exterior materials for electrical and electronic products, automotive interior and exterior materials, and construction materials due to their excellent mechanical properties, processability, and appearance characteristics.

[0004] Meanwhile, due to recent concerns regarding environmental pollution, such as increased carbon dioxide emissions and climate change, there has been a growing number of attempts in the plastic product market to recycle waste plastics from sources like waste and use them as raw materials for thermoplastic resins. For example, there are attempts to manufacture thermoplastic resins using naphtha derived from pyrolysis oil obtained by heating waste plastics to high temperatures. Furthermore, there are ongoing efforts to incorporate naturally derived materials into thermoplastic resin compositions. The problem to be solved

[0005] One embodiment provides a thermoplastic resin composition having excellent impact resistance, heat resistance, and low-temperature appearance characteristics without a decrease in rigidity, and a molded article manufactured therefrom. means of solving the problem

[0006] A thermoplastic resin composition according to one embodiment may comprise (A) 20% to 40% by weight of an acrylonitrile-butadiene-styrene graft copolymer having an average particle size of 250 nm to 350 nm of a rubbery polymer; and (B) 60% to 80% by weight of a styrene-acrylonitrile copolymer containing 30% to 40% by weight of an acrylonitrile-derived component, and (C) 0.1% to 0.5% by weight of an oil having a triglyceride structure, based on 100 parts by weight of a base resin.

[0007] The acrylonitrile-butadiene-styrene graft copolymer having an average particle size of 250 nm to 350 nm of the above (A) rubbery polymer may have a core-shell structure comprising a core made of a butadiene-based rubbery polymer and a shell formed by graft polymerization of acrylonitrile and styrene on the core.

[0008] The acrylonitrile-butadiene-styrene graft copolymer having an average particle size of 250 nm to 350 nm of the above (A) rubbery polymer may comprise 40% to 70% by weight of the core based on the total weight of the above acrylonitrile-butadiene-styrene graft copolymer.

[0009] The styrene-acrylonitrile copolymer containing 30% to 40% by weight of the above (B) acrylonitrile-derived component may have a weight-average molecular weight of 80,000 g / mol to 200,000 g / mol.

[0010] The oil containing the above (C) triglyceride structure may be characterized by being represented by the following chemical formula 1:

[0011] [Chemical Formula 1]

[0012]

[0013] In the above chemical formula 1,

[0014] R 1 , R 2 , and R3 can be identical or different from each other, and R 1 , R 2 , and R 3 Each is independently a substituted or unsubstituted saturated or unsaturated aliphatic hydrocarbon group of C4 to C30.

[0015] The oil containing the above (C) triglyceride structure may be characterized by being represented by the following chemical formula 2 or the following chemical formula 3:

[0016] [Chemical Formula 2]

[0017]

[0018] [Chemical Formula 3]

[0019]

[0020] The oil containing the above (C) triglyceride structure may be one or more selected from castor oil, palm oil, soybean oil, canola oil, corn oil, rapeseed oil, sunflower oil, grapeseed oil, safflower oil, cottonseed oil, sesame oil, rice bran oil, palm kernel oil, camellia oil, olive oil, coconut oil, beef tallow, lard, beef fat, fish oil, whale oil, tuna oil, and waste oils thereof.

[0021] The above thermoplastic resin composition may further include one or more additives selected from flame retardants, nucleating agents, coupling agents, glass fibers, fillers, plasticizers, lubricants, mineral fillers, antibacterial agents, release agents, heat stabilizers, antioxidants, UV stabilizers, impact modifiers, pigments, dyes, and antistatic agents.

[0022] A molded article according to another embodiment can be manufactured from a thermoplastic resin composition according to the above embodiment. Effects of the invention

[0023] A thermoplastic resin composition according to one embodiment and a molded article using the same can exhibit excellent impact resistance and heat resistance without a decrease in rigidity, and can also exhibit excellent low-temperature appearance characteristics without a low-temperature clouding phenomenon. Brief explanation of the drawing

[0024] Figure 1 is a photograph showing the appearance of a cloudy phenomenon occurring at a low temperature of -30℃ (Comparative Example 5). Specific details for implementing the invention

[0025] Hereinafter, embodiments of the present invention will be described in detail. However, these are presented as examples and are not intended to limit the present invention, and the present invention is defined only by the appended claims.

[0026] Unless specifically stated otherwise in this specification, "copolymer" means block copolymer, random copolymer, and graft copolymer, and "copolymer" means block copolymer, random copolymer, and graft copolymer.

[0027] Unless specifically stated otherwise in this specification, the average particle size of a rubbery polymer refers to the volume-average diameter and means the Z-average particle size measured using a dynamic light scattering analyzer.

[0028] Unless otherwise specifically stated in this specification, the weight-average molecular weight is measured by dissolving a powder sample in a suitable solvent and then using Agilent Technologies’ 1200 series Gel Permeation Chromatography (GPC) (using Shodex’s polystyrene as the standard sample).

[0029] According to one embodiment, the thermoplastic resin composition of the present invention may comprise (A) 20% to 40% by weight of an acrylonitrile-butadiene-styrene graft copolymer having an average particle size of 250 nm to 350 nm of a rubbery polymer; and (B) 60% to 80% by weight of a styrene-acrylonitrile copolymer containing 30% to 40% by weight of an acrylonitrile-derived component, and (C) 0.1% to 0.5% by weight of an oil having a triglyceride structure, based on 100 parts by weight of a base resin comprising (A) 20% to 40% by weight of an acrylonitrile-butadiene-styrene graft copolymer having an average particle size of 250 nm to 350 nm; and (B) 60% to 80% by weight of a styrene-acrylonitrile copolymer containing 30% to 40% by weight of an acrylonitrile-derived component.

[0030] A thermoplastic resin composition according to one embodiment can exhibit excellent impact resistance, heat resistance, and low-temperature appearance characteristics without reducing stiffness.

[0031] Hereinafter, each component included in the above thermoplastic resin composition will be described in detail.

[0033] (A) Acrylonitrile-butadiene-styrene graft copolymer having an average particle size of 250 nm to 350 nm of the rubbery polymer

[0034] A thermoplastic resin composition according to one embodiment can achieve excellent impact resistance by including (A) an acrylonitrile-butadiene-styrene graft copolymer having an average particle size of 250 nm to 350 nm of the rubbery polymer.

[0035] The acrylonitrile-butadiene-styrene graft copolymer having an average particle size of 250 nm to 350 nm of the above (A) rubbery polymer may have a core-shell structure comprising a core made of a butadiene-based rubbery polymer and a shell formed by graft polymerization of acrylonitrile and styrene on the core. The rubbery polymer component constituting the core improves impact resistance, particularly at low temperatures, and the shell component can improve adhesion at the interface by lowering the interfacial tension with the matrix resin component.

[0036] The average particle size of the butadiene-based rubbery polymer in the acrylonitrile-butadiene-styrene graft copolymer, in which the average particle size of the rubbery polymer (A) is 250 nm to 350 nm, may be, for example, 260 nm to 350 nm, 270 nm to 350 nm, 250 nm to 340 nm, 250 nm to 330 nm, 260 nm to 340 nm, 260 nm to 330 nm, 270 nm to 340 nm, or 270 nm to 330 nm. If the average particle size of the butadiene-based rubbery polymer in the acrylonitrile-butadiene-styrene graft copolymer, in which the average particle size of the rubbery polymer (A) is 250 nm to 350 nm, satisfies the above range, the thermoplastic resin composition containing it may exhibit excellent impact resistance.

[0037] The acrylonitrile-butadiene-styrene graft copolymer having an average particle size of 250 nm to 350 nm of the above (A) rubbery polymer can be prepared by adding styrene and acrylonitrile to a butadiene-based rubbery polymer and graft copolymerizing through a conventional polymerization method such as emulsion polymerization or bulk polymerization. The above butadiene-based rubbery polymer may be selected from the group consisting of butadiene rubbery polymers, butadiene-styrene rubbery polymers, butadiene-acrylonitrile rubbery polymers, butadiene-acrylate rubbery polymers, and mixtures thereof.

[0038] The acrylonitrile-butadiene-styrene graft copolymer having an average particle size of (A) rubbery polymer of 250 nm to 350 nm may comprise 40% to 70% by weight of the core based on the total weight of the acrylonitrile-butadiene-styrene graft copolymer, for example, 40% to 65% by weight, 40% to 60% by weight, 45% to 70% by weight, 50% to 70% by weight, 55% to 70% by weight, 45% to 65% by weight, and 50% to 65% by weight. When the core, which is made of a butadiene-based rubbery polymer, is included in the acrylonitrile-butadiene-styrene graft copolymer within the above content range, the mechanical properties, appearance characteristics, and fluidity of the thermoplastic resin composition containing it can be optimized.

[0039] The weight ratio of styrene and acrylonitrile graft-polymerized onto a core made of the butadiene-based rubbery polymer may be 6:4 to 8:2, and if the above range is satisfied, the thermoplastic resin composition containing it can achieve superior impact resistance and appearance characteristics.

[0040] The acrylonitrile-butadiene-styrene graft copolymer having an average particle size of (A) the rubbery polymer of 250 nm to 350 nm may be included in an amount of 20% to 40% by weight based on the total weight of the base resin comprising the acrylonitrile-butadiene-styrene graft copolymer having an average particle size of (A) the rubbery polymer of 250 nm to 350 nm and the styrene-acrylonitrile copolymer containing 30% to 40% by weight of (B) the acrylonitrile-derived component described later, and may be included in an amount of, for example, 20% to 35% by weight or 20% to 30% by weight. By including an acrylonitrile-butadiene-styrene graft copolymer having an average particle size of 250 nm to 350 nm of the above (A) rubbery polymer in the base resin to the above range, the thermoplastic resin composition containing it can have excellent impact resistance and stiffness.

[0042] (B) Styrene-acrylonitrile copolymer containing 30% to 40% by weight of an acrylonitrile-derived component

[0043] A thermoplastic resin composition according to one embodiment comprises (B) a styrene-acrylonitrile copolymer containing 30% to 40% by weight of an acrylonitrile-derived component, which can improve the processability and fluidity of the thermoplastic resin composition and maintain compatibility between components at a certain level, and can impart chemical resistance and heat resistance to the thermoplastic resin composition.

[0044] The styrene-acrylonitrile copolymer containing 30% to 40% by weight of the acrylonitrile-derived component (B) above comprises a styrene-derived component and an acrylonitrile-derived component, and based on the total weight of the styrene-acrylonitrile copolymer containing 30% to 40% by weight of the acrylonitrile-derived component (B), the acrylonitrile-derived component may be included, for example, in amounts of 30% to 39% by weight, 30% to 38% by weight, 30% to 37% by weight, 30% to 36% by weight, and 30% to 35% by weight. By including the acrylonitrile-derived component in the styrene-acrylonitrile copolymer within the above content range, the effect of the oil containing the triglyceride structure (C) described later is further exerted, thereby further increasing the impact resistance of the thermoplastic resin composition containing them. In addition, the above thermoplastic resin composition may exhibit the above characteristics without reducing processability.

[0045] The weight-average molecular weight of the styrene-acrylonitrile copolymer containing 30% to 40% by weight of the acrylonitrile-derived component (B) above may be 80,000 g / mol to 200,000 g / mol, for example, 80,000 g / mol to 180,000 g / mol, 80,000 g / mol to 150,000 g / mol, 90,000 g / mol to 200,000 g / mol, 90,000 g / mol to 180,000 g / mol, or 90,000 g / mol to 150,000 g / mol. If the weight-average molecular weight of the styrene-acrylonitrile copolymer containing 30% to 40% by weight of the acrylonitrile-derived component (B) above satisfies the above range, the fluidity of the thermoplastic resin composition containing it can be improved while maintaining compatibility between the components.

[0046] The styrene-acrylonitrile copolymer containing 30% to 40% by weight of the acrylonitrile-derived component (B) above may be included in a range of 60% to 80% by weight based on the total weight of the base resin containing the acrylonitrile-butadiene-styrene graft copolymer having an average particle size of 250 nm to 350 nm of the rubbery polymer (A) above and the styrene-acrylonitrile copolymer containing 30% to 40% by weight of the acrylonitrile-derived component (B) above, for example, 65% to 80% by weight or 70% to 80% by weight. By including the styrene-acrylonitrile copolymer containing 30% to 40% by weight of the acrylonitrile-derived component (B) above within the above range in the base resin, the processability of the thermoplastic resin composition containing it is further improved, and it may have even better appearance characteristics.

[0048] (C) Oils containing a triglyceride structure

[0049] A thermoplastic resin composition according to one embodiment includes (C) an oil having a triglyceride structure, which complements the stiffness of the thermoplastic resin composition, such as tensile strength or flexural strength, while preventing whitening at low temperatures, thereby enabling excellent appearance characteristics not only at room temperature but also at low temperatures.

[0050] The oil containing the above (C) triglyceride structure can be represented by the following chemical formula 1:

[0051] [Chemical Formula 1]

[0052]

[0053] In the above chemical formula 1,

[0054] R 1 , R 2 , and R 3 can be identical or different from each other, and R 1 , R 2 , and R 3Each is independently a substituted or unsubstituted saturated or unsaturated aliphatic hydrocarbon group of C4 to C30.

[0055] For example, R of the above chemical formula 1 1 , R 2 , and R 3 Each may be an independently substituted or unsubstituted saturated or unsaturated aliphatic hydrocarbon group of C6 to C30, for example, a substituted or unsubstituted saturated or unsaturated aliphatic hydrocarbon group of C12 to C30, for example, a substituted or unsubstituted unsaturated aliphatic hydrocarbon group of C12 to C30, for example, a substituted unsaturated aliphatic hydrocarbon group of C12 to C30, for example, an unsaturated aliphatic hydrocarbon group of C12 to C30 substituted with a hydroxyl group.

[0056] For example, an oil containing the above (C) triglyceride structure can be represented by the following chemical formula 2 or the following chemical formula 3.

[0057] [Chemical Formula 2]

[0058]

[0059] [Chemical Formula 3]

[0060]

[0061] The oil containing the above (C) triglyceride structure may be a natural oil or a synthetic oil, for example, a natural oil, for example, a vegetable oil or an animal oil.

[0062] For example, the oil containing the above (C) triglyceride structure may be one or more oils selected from castor oil, palm oil, soybean oil, canola oil, corn oil, rapeseed oil, sunflower oil, grapeseed oil, safflower oil, cottonseed oil, sesame oil, rice bran oil, palm kernel oil, camellia oil, olive oil, palm oil, beef tallow, lard, beef fat, fish oil, whale oil, tuna oil, and waste oils thereof, and may be one or more vegetable oils selected from, for example, castor oil, palm oil, soybean oil, canola oil, corn oil, rapeseed oil, sunflower oil, grapeseed oil, safflower oil, cottonseed oil, sesame oil, rice bran oil, palm kernel oil, camellia oil, olive oil, and palm oil, and may be, for example, canola oil or castor oil, but is not limited thereto.

[0063] As described above, an eco-friendly and carbon-reducing thermoplastic resin composition and a molded product can be obtained by using a natural oil among oils containing (C) a triglyceride structure.

[0064] The oil containing the above (C) triglyceride structure may be included in an amount of 0.1 to 0.5 parts by weight, for example, 0.15 to 0.5 parts by weight, 0.2 to 0.5 parts by weight, 0.1 to 0.45 parts by weight, 0.1 to 0.4 parts by weight, 0.1 to 0.35 parts by weight, 0.1 to 0.3 parts by weight, 0.15 to 0.45 parts by weight, or 0.15 to 0.4 parts by weight, based on 100 parts by weight of the base resin, but is not limited thereto. By including the oil containing the above (C) triglyceride structure in the thermoplastic resin composition within the above content range, the impact resistance and appearance characteristics of the thermoplastic resin composition and the molded article according to one embodiment can be further improved.

[0066] (D) Additives

[0067] In addition to the above components (A) to (C), the thermoplastic resin composition according to one embodiment may further include one or more additives necessary for the final use of the thermoplastic resin composition.

[0068] The above additive may be one or more selected from flame retardants, nucleating agents, coupling agents, glass fibers, fillers, plasticizers, lubricants, mineral fillers, antibacterial agents, release agents, heat stabilizers, antioxidants, UV stabilizers, impact modifiers, pigments, dyes, and antistatic agents.

[0069] These additives may be appropriately included within a range that does not impair the physical properties of the thermoplastic resin composition, and, for example, may be included in an amount of 20 parts by weight or less per 100 parts by weight of the base resin, but are not limited thereto.

[0070] The thermoplastic resin composition according to the present invention can be prepared by a known method for preparing a thermoplastic resin composition. For example, the thermoplastic resin composition according to the present invention can be prepared in the form of pellets by mixing the components of the present invention and other additives, and then melting and kneading them in an extruder.

[0071] A molded article according to another embodiment of the present invention may be manufactured from the thermoplastic resin composition described above through a known molding method. For example, the molded article may be manufactured by methods such as extrusion molding or injection molding, but is not limited thereto.

[0072] The present invention will be explained in more detail below through examples and comparative examples, but the following examples and comparative examples are for illustrative purposes only and are not intended to limit the invention.

[0074] Examples 1 to 2 and Comparative Examples 1 to 7

[0075] The thermoplastic resin compositions of Examples 1 to 2 and Comparative Examples 1 to 7 were prepared according to the component content ratios listed in Table 1 below.

[0076] In Table 1, (A) and (B) are included in the base resin and are expressed as weight % based on the total weight of the base resin, and (C) is added to the base resin and is expressed as weight parts per 100 weight parts of the base resin.

[0077] The components listed in Table 1 were dry-mixed and quantitatively fed continuously into the feed section of a twin-screw extruder (L / D = 29, Φ = 45 mm) and melted / kneaded at 250°C. Subsequently, the thermoplastic resin composition pelletized through the twin-screw extruder was dried at approximately 100°C for approximately 2 hours, and then injection-molded specimens for evaluating physical properties were prepared using a 6 oz injection molding machine under conditions of a cylinder temperature of approximately 250°C and a mold temperature of approximately 60°C.

[0078] Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 (A) 25 25 25 25 25 25 25 25 25 (b1) - - 75 - 75 - - - 75 (b2) - - - - - 75 - - - (B1) 75 - - - - - 75 - - (B2) - 75 - 75 - - - 75 - (c) - - - - 0.02 0.02 0.02 0.02 - (C) 0.25 0.25 - - - - - - 0.25

[0079] (A) Acrylonitrile-butadiene-styrene graft copolymer

[0080] A core-shell structured acrylonitrile-butadiene-styrene graft copolymer comprising approximately 58% by weight of a core made of a butadiene rubbery polymer (Manufacturer: Lotte Chemical)

[0081] (b1) Styrene-acrylonitrile copolymer

[0082] Styrene-acrylonitrile copolymer containing approximately 24% by weight of acrylonitrile-derived components and a weight-average molecular weight of approximately 142,000 g / mol (Manufacturer: Lotte Chemical)

[0083] (b2) Styrene-acrylonitrile copolymer

[0084] Styrene-acrylonitrile copolymer containing approximately 27.5 wt% of acrylonitrile-derived components and a weight-average molecular weight of approximately 136,000 g / mol (Manufacturer: Lotte Chemical)

[0085] (B1) Styrene-acrylonitrile copolymer

[0086] Styrene-acrylonitrile copolymer containing approximately 32% by weight of acrylonitrile-derived components and a weight-average molecular weight of approximately 133,000 g / mol (Manufacturer: Lotte Chemical)

[0087] (B2) Styrene-acrylonitrile copolymer

[0088] Styrene-acrylonitrile copolymer containing approximately 34% by weight of acrylonitrile-derived components and a weight-average molecular weight of approximately 97,000 g / mol (Manufacturer: Lotte Chemical)

[0089] (c) Silicone oil

[0090] XIAMETER™ PMX-200 Silicone Fluid 100 cSt (Manufacturer: Dow)

[0091] (C) Oils containing a triglyceride structure

[0092] Unrefined yellow liquid canola oil containing 90% by weight or more of unsaturated fatty acids (Manufacturer: Lotte Well Food)

[0094] Experimental Example

[0095] The evaluation was performed according to the following evaluation method, and the results are shown in Table 2 below.

[0096] (1) Room temperature impact resistance (unit: kgf·cm / cm)

[0097] The notched Izod impact strength of a 6.4 mm thick specimen was measured at 23℃ according to ASTM D256 standards.

[0098] (2) Low-temperature impact resistance (unit: kgf·cm / cm)

[0099] A 6.4 mm thick notched Izod impact strength test specimen was aged in a -30°C low-temperature chamber for 4 hours, and then the notched Izod impact strength was measured according to ASTM D256.

[0100] (3) Fluidity (Unit: g / 10 min)

[0101] The melt flow index (MI) was measured according to ASTM D1238 under conditions of 250℃ and 10 kg.

[0102] (4) Heat resistance (unit: ℃)

[0103] The Vicat softening temperature (VST) was measured under B50 conditions according to ISO 306 standards.

[0104] (5) Low temperature cloudiness

[0105] After aging a 6.4 mm thick notched Izod impact strength specimen in a -30°C low-temperature chamber for 4 hours, the occurrence of cloudiness was visually checked. As a result, in Table 2 below, cases where no cloudiness occurred (good) were marked “O”, and cases where cloudiness occurred were marked “X”. As shown in Figure 1, specimens in which cloudiness was observed appear opaque and hazy.

[0106] (6) Tensile strength (unit: kgf / cm²) 2 )

[0107] The tensile strength of a 3.2 mm thick specimen was measured at 50 mm / min according to ASTM D638 standards.

[0108] (7) Flexural strength (unit: kgf / cm²) 2 )

[0109] The flexural strength of a 6.4 mm thick specimen was measured at 2.8 mm / min according to ASTM D790 standards.

[0110] Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Room temperature Izod impact strength (kgf·cm / cm) 24.8 19.4 13.8 17.3 16.9 19.8 23.9 18.3 14.9 Low-temperature Izod impact strength (kgf·cm / cm) 10.4 7.8 4.3 7.0 7.1 8.8 9.4 7.4 5.9 Melt flow index (g / 10min) 13.6 29.6 22.3 30.5 22.8 18.4 13.4 29.5 23.3 VST(℃) 99.4 98.1 97.4 98.3 97.7 98.5 99.7 98.3 97.0 Low-temperature cloudiness O O O O X X X X O Tensile strength (kgf / cm²) 2 ) 536 534 527 533 507 501 508 511 520 Flexural strength (kgf / cm²) 2 ) 699 689 691 716 655 666 681 677 671

[0111] Referring to Table 2 above, it can be confirmed that the thermoplastic resin composition according to the example exhibits excellent impact strength at room temperature and low temperature, as well as excellent tensile strength and flexural strength, while not exhibiting cloudiness at low temperatures. In other words, it can be seen that the thermoplastic resin composition according to one embodiment has excellent stiffness, impact resistance, heat resistance, and low-temperature appearance characteristics.

[0112] Although the present invention has been described above through preferred embodiments as previously described, those skilled in the art will readily understand that the present invention is not limited thereto and that various modifications and variations are possible without departing from the concept and scope of the claims set forth below.

Claims

Claim 1 A thermoplastic resin composition comprising (A) 20% to 40% by weight of an acrylonitrile-butadiene-styrene graft copolymer having an average particle size of 250 nm to 350 nm of a rubbery polymer; and (B) 60% to 80% by weight of a styrene-acrylonitrile copolymer containing 30% to 40% by weight of an acrylonitrile-derived component, wherein (C) 0.1% to 0.5% by weight of an oil having a triglyceride structure, based on 100 parts by weight of a base resin. Claim 2 A thermoplastic resin composition according to claim 1, wherein the acrylonitrile-butadiene-styrene graft copolymer having an average particle size of (A) a rubbery polymer of 250 nm to 350 nm has a core-shell structure comprising a core made of a butadiene-based rubbery polymer and a shell formed by graft polymerization of acrylonitrile and styrene on the core. Claim 3 A thermoplastic resin composition according to claim 2, wherein the acrylonitrile-butadiene-styrene graft copolymer having an average particle size of (A) rubbery polymer of 250 nm to 350 nm comprises 40% to 70% by weight of the core based on the total weight of the acrylonitrile-butadiene-styrene graft copolymer. Claim 4 A thermoplastic resin composition according to claim 1, wherein the styrene-acrylonitrile copolymer containing 30% to 40% by weight of the (B) acrylonitrile-derived component has a weight-average molecular weight of 80,000 g / mol to 200,000 g / mol. Claim 5 A thermoplastic resin composition according to claim 1, characterized in that the oil comprising the (C) triglyceride structure is represented by the following chemical formula 1: [Chemical Formula 1] In the above chemical formula 1, R 1 , R 2 , and R 3 can be identical or different from each other, and R 1 , R 2 , and R 3 Each is independently a substituted or unsubstituted saturated or unsaturated aliphatic hydrocarbon group of C4 to C30. Claim 6 A thermoplastic resin composition according to claim 1, wherein the oil comprising the (C) triglyceride structure is represented by the following chemical formula 2 or the following chemical formula 3: [Chemical Formula 2] [Chemical Formula 3] Claim 7 A thermoplastic resin composition according to claim 1, wherein the oil containing the (C) triglyceride structure is one or more selected from castor oil, palm oil, soybean oil, canola oil, corn oil, rapeseed oil, sunflower oil, grapeseed oil, safflower oil, cottonseed oil, sesame oil, rice bran oil, palm kernel oil, camellia oil, olive oil, coconut oil, beef tallow, lard, beef fat, fish oil, whale oil, tuna oil, and waste oils thereof. Claim 8 A thermoplastic resin composition according to claim 1, wherein the thermoplastic resin composition further comprises one or more additives selected from flame retardants, nucleating agents, coupling agents, glass fibers, fillers, plasticizers, lubricants, mineral fillers, antibacterial agents, release agents, heat stabilizers, antioxidants, UV stabilizers, impact modifiers, pigments, dyes, and antistatic agents. Claim 9 A molded article manufactured from a thermoplastic resin composition according to any one of claims 1 to 8.

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