Thermoplastic resin composition and molded body comprising same

Abstract

Disclosed are a thermoplastic resin composition and a molded body including the same. By introducing the inorganic filler and the aromatic polyester into the polycarbonate resin and the polycarbonate-polysiloxane copolymer, the resin composition can obtain good dimensional stability and thermal deformation resistance at high temperatures.

Description

Technical Field

[0001] The present disclosure relates to a thermoplastic resin composition and a molded body including the same. Specifically, by introducing an inorganic filler and an aromatic polyester into a polycarbonate resin and a polycarbonate-polysiloxane copolymer, the resin composition can obtain good dimensional stability and heat resistance to deformation at high temperatures. Background Art

[0002] Among all thermoplastic resins, acrylonitrile-butadiene-styrene (ABS) resin has excellent mechanical strength, moldability, color realization, and plating properties, and is thus used in a wide range of fields, including automobiles, household appliances, office automation (OA), etc. However, the ABS resin has insufficient heat resistance and impact resistance, so its use is restricted. On the other hand, although having excellent heat resistance and impact resistance, the polycarbonate resin is characterized by poor moldability and impact resistance at low temperatures, which limits its use.

[0003] To solve these problems, a method of blending ABS resin and polycarbonate resin is widely used to complement the disadvantages of each material. Specifically, a polycarbonate-ABS (PC-ABS) resin having excellent mechanical strength, moldability, impact resistance, and heat resistance can be obtained by blending ABS resin and polycarbonate resin. Such PC-ABS resin is being used in various fields of interior and exterior parts, including automotive interior parts that require stability in the event of a collision.

[0004] With recently strengthened environmental regulations, the market for electric vehicles has expanded. In this case, electric vehicles generally have a shorter driving range than internal combustion engine vehicles, making it important to achieve their highest level. Specifically, the battery installed in each electric vehicle is very heavy, so efforts are being made to reduce the weight of the components used in electric vehicles to increase the driving range and improve fuel economy or electrical economy.

[0005] To reduce the weight of the components used in electric vehicles, attempts have been made to replace metals with the above-described PC-ABS resin and reduce the thickness of the molded body. However, reducing the thickness causes problems such as vulnerability to thermal deformation, so efforts should be made to improve the quality. Summary of the Invention

[0006] The present disclosure is made to solve the above-mentioned problems, and the present disclosure aims to improve good dimensional stability and heat resistance to deformation at high temperatures by introducing an inorganic filler and an aromatic polyester into a thermoplastic resin used in automobiles.

[0007] In addition, the present disclosure aims to obtain interior and exterior components for automobiles, ships, and buildings having excellent mechanical properties (mechanical property) and heat resistance by producing a molded body using a thermoplastic resin composition having improved dimensional stability and heat resistance to deformation.

[0008] The object of the present disclosure is not limited to the above-mentioned objects. The above objects and other objects of the present disclosure should become more apparent from the following description.

[0009] One aspect of the present disclosure provides a thermoplastic resin composition. The composition includes: 40 to 80 weight percent (wt%) of a polycarbonate resin; 1 to 20 wt% of a polycarbonate-polysiloxane copolymer resin; 5 to 30 wt% of an aromatic polyester resin; 1 to 20 wt% of a graft copolymer resin, wherein a rubbery polymer, an aromatic vinyl monomer, and a vinyl cyanide monomer are polymerized by graft polymerization; 5 to 30 wt% of an inorganic filler; 0.01 to 1 wt% of an organophosphate ester compound; and 1 to 5 wt% of a vinyl-based copolymer resin.

[0010] In one embodiment, the polycarbonate resin may have a melt flow index in the range of 10 to 35 grams per 10 minutes (g / 10min) measured under the conditions of a temperature of 300 °C and a load of 1.2 kg according to the ISO 1133 standard.

[0011] In one embodiment, at least a part of the polycarbonate resin may include a post-consumer recycled polycarbonate (PCR-PC) resin. Based on the weight of the composition, the PCR-PC resin may be included in an amount of 10 to 30 wt%. The PCR-PC resin may have a melt flow index in the range of 10 to 35 g / 10min measured under the conditions of a temperature of 300 °C and a load of 1.2 kg according to the ISO 1133 standard.

[0012] In one embodiment, the polycarbonate-polysiloxane copolymer resin may have a melt flow index in the range of 1 to 10 g / 10min measured under the conditions of a temperature of 300 °C and a load of 1.2 kg according to the ISO 1133 standard.

[0013] In one embodiment, the aromatic polyester resin may include at least one selected from the group consisting of or comprising polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyethylene terephthalate glycol (PETG), or any combination thereof.

[0014] In one embodiment, the rubber polymer of the graft copolymer resin may include a diene-based rubber polymer.

[0015] In this case, the diene-based rubber polymer may include at least one selected from the group consisting of or comprising polybutadiene, a butadiene-aromatic vinyl compound copolymer, a butadiene-vinyl cyanide compound copolymer, polyisoprene, or any combination thereof. The butadiene-aromatic vinyl compound copolymer may include a butadiene-styrene copolymer and a butadiene-vinyltoluene copolymer. The butadiene-vinyl cyanide compound copolymer may include a butadiene-acrylonitrile copolymer and a butadiene-methacrylonitrile copolymer.

[0016] In one embodiment, the graft copolymer resin may contain a first graft copolymer resin and a second graft copolymer resin. Based on the total weight of the composition, each of the first graft copolymer resin and the second graft copolymer resin may be contained in the graft copolymer resin in an amount of 1 to 10 wt%. In addition, the first graft copolymer resin may be polymerized by graft polymerization of 55 to 65 wt% of a diene-based rubber polymer with a monomer mixture of 35 to 45 wt% of an aromatic vinyl monomer and a vinyl cyanide monomer. The second graft copolymer resin may be polymerized by graft polymerization of 45 to 55 wt% of a diene-based rubber polymer with a monomer mixture of 45 to 55 wt% of an aromatic vinyl monomer and a vinyl cyanide monomer.

[0017] In this case, the diene-based rubber polymer may include at least one selected from the group consisting of or comprising polybutadiene, a butadiene-aromatic vinyl compound copolymer, a butadiene-vinyl cyanide compound copolymer, polyisoprene, or any combination thereof. The butadiene-aromatic vinyl compound copolymer may include a butadiene-styrene copolymer and a butadiene-vinyltoluene copolymer. The butadiene-vinyl cyanide compound copolymer may include a butadiene-acrylonitrile copolymer and a butadiene-methacrylonitrile copolymer.

[0018] In one embodiment, the first graft copolymer resin may have a grafting ratio in the range of 30% to 40%, an average particle size in the range of 0.2 to 0.5 micrometers (μm), and a weight average molecular weight in the range of 105,000 to 120,000 grams per mole (g / mol).

[0019] In one embodiment, the second graft copolymer resin may have a grafting ratio in the range of 40% to 50%, an average particle size in the range of 0.05 to 0.15 μm, and a weight average molecular weight in the range of 90,000 to 105,000 g / mol.

[0020] In one embodiment, based on 100 parts by weight of the diene-based rubber polymer and monomer mixture, each of the first graft copolymer resin and the second graft copolymer resin may further comprise 0.1 to 4.0 parts by weight of an initiator.

[0021] In one embodiment, the initiator may include at least one selected from the group consisting of or comprising: succinic peroxide, benzoyl peroxide, tert-butyl lauroperoxide, 2,5-dimethyl-2,5-di(benzoyl peroxide)hexane, tert-butyl peroxyacetate, di-tert-butyl diperoxyphthalate, tert-butyl peroxymaleate, cyclohexanone peroxide, tert-butyl hydroperoxide, tert-butyl peroxy-2-ethylhexanoate, p-chlorobenzoyl peroxide, tert-butyl peroxyisobutyrate, t-butyl peroxy isopropyl carbonate, tert-butyl peroxybenzoate, dicumyl peroxide, 2,5-dimethyl-2,5-di(tert-butyl-peroxy)hexane, tert-butyl cumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane-3, α'-bis(tert-butylperoxy)-1,4-diisopropylbenzene, or any combination thereof.

[0022] In one embodiment, the inorganic filler may include at least one selected from the group consisting of or comprising: acicular inorganic materials, plate-like inorganic materials, quicklime, meerschaum, or any combination thereof.

[0023] In one embodiment, the acicular inorganic material may include at least one selected from the group consisting of or comprising: whiskers, wollastonite, glass fiber, basalt fiber, or any combination thereof.

[0024] In one embodiment, the plate-like inorganic material may include at least one selected from the group consisting of or comprising: talc, mica, kaolin, or any combination thereof.

[0025] In one embodiment, the organophosphate compound may include at least one selected from the group consisting of or consisting of monomeric phosphates, monomeric phosphonates, oligomeric phosphates, oligomeric phosphonates, phosphonate amines, phosphazenes, or any combination thereof.

[0026] In one embodiment, the vinyl-based copolymer resin may include a copolymer of an aromatic vinyl monomer and a vinyl cyanide monomer.

[0027] In addition, the vinyl-based copolymer resin may be polymerized by graft polymerization of one selected from the group consisting of or consisting of an anhydride monomer, an acrylate monomer, or any combination thereof in a copolymer of an aromatic vinyl monomer and a vinyl cyanide monomer.

[0028] In this case, the vinyl-based copolymer resin may be polymerized by graft polymerization of 99.0 to 99.9 mol% of a copolymer of an aromatic vinyl monomer and a vinyl cyanide monomer with 0.1 to 1.0 mol% of one selected from the group consisting of or consisting of an anhydride monomer, an acrylate monomer, or any combination thereof.

[0029] In one embodiment, the vinyl-based copolymer resin may include at least one selected from the group consisting of or consisting of glycidyl methacrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-hydroxyethyl methacrylate, or any combination thereof.

[0030] Another aspect of the present disclosure provides a molded body including the composition according to the various embodiments mentioned above.

[0031] According to one aspect of the present disclosure, the thermoplastic resin composition can obtain excellent compatibility and dimensional stability by introducing an aromatic polyester and an inorganic filler into a polycarbonate resin and a polycarbonate-polysiloxane copolymer resin and exhibits heat resistance to deformation at high temperatures.

[0032] In addition, according to another aspect of the present disclosure, a molded body including the thermoplastic resin composition having excellent mechanical properties and heat resistance can be applied to various fields, including interior and exterior components for automobiles or ships, interior and exterior materials for buildings, and the like.

[0033] The effects of the present disclosure are not limited to the effects mentioned above. It should be understood that the effects of the present disclosure include all effects that can be derived from the following description. Detailed Description

[0034] The above objects, other objects, features, and advantages of the present disclosure should be more easily understood from the following embodiments. However, the present disclosure is not limited to the embodiments described herein and can be embodied in other forms. The embodiments described herein are provided so that this disclosure can be fully and completely disclosed, and the spirit of this disclosure can be fully conveyed to those of ordinary skill in the art.

[0035] Terms such as "first", "second", etc. used herein may be used to describe various components, but these components should not be construed as being limited to these terms. These terms are only used for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, the first component may be referred to as the second component, and the second component may also be referred to as the first component. Unless the context clearly indicates otherwise, singular expressions include plural expressions.

[0036] It should be further understood that the terms "comprising", "including", or "having" and their variants used herein specify the presence of the described features, regions, integers, steps, operations, elements, and / or components. However, these terms do not exclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and / or combinations thereof. It should also be understood that when an element such as a layer, film, region, or sheet is referred to as being "on" another element, it can be directly on the other element, or intervening elements may be present therebetween. Similarly, when an element such as a layer, film, region, or sheet is referred to as being "under" another element, it can be directly under the other element, or intervening elements may be present therebetween.

[0037] Unless otherwise specified, all numerical values, values, and / or representation terms representing the amounts of components, reaction conditions, polymer compositions, and mixtures used herein should be considered approximate values, including various uncertainties inherent in obtaining these values that affect measurements, etc., and should therefore be understood to be modified by the term "about" in all cases. In addition, when a numerical range is disclosed in this specification, the range is continuous and includes all values from the minimum value to the maximum value of the range, unless otherwise indicated. In addition, when such a range relates to integer values, all integers from the minimum value to the maximum value are included, unless otherwise indicated.

[0038] As used herein, when a range is described for a variable, the variable shall be understood to include all values within the described range, including the endpoints of the described range. For example, the range of "5 to 10" includes the values 5, 6, 7, 8, 9, and 10, and any sub-ranges such as 6 to 10, 7 to 10, 6 to 9, and 7 to 9. This range shall be understood to include any value between reasonable integers within the described range, such as 5.5, 6.5, 7.5, 5.5 to 8.5, and 6.5 to 9. Additionally, for example, the range of "10% to 30%" includes values such as 10%, 11%, 12%, and 13%, and all integers up to and including 30%, and any sub-ranges such as 10% to 15%, 12% to 18%, and 20% to 30%. This range shall be understood to include any value between reasonable integers within the described range, such as 10.5%, 15.5%, and 25.5%.

[0039] Thermoplastic resin composition

[0040] According to one aspect of the present disclosure, a thermoplastic resin composition comprises: 40 to 80 weight percent (wt%) of a polycarbonate resin; 1 to 20 wt% of a polycarbonate-polysiloxane copolymer resin; 5 to 30 wt% of an aromatic polyester resin; 1 to 20 wt% of a graft copolymer resin, wherein a rubber polymer, an aromatic vinyl monomer, and a vinyl cyanide monomer are polymerized by graft polymerization; 5 to 30 wt% of an inorganic filler; 0.01 to 1 wt% of an organic phosphate compound; and 1 to 5 wt% of a vinyl-based copolymer resin.

[0041] Hereinafter, the polycarbonate resin, polycarbonate-polysiloxane copolymer resin, aromatic polyester resin, graft copolymer resin, inorganic filler, organic phosphate compound, vinyl copolymer resin, and other additives contained in the thermoplastic resin composition will be explained in detail.

[0042] (A) Polycarbonate resin

[0043] The thermoplastic resin composition may comprise 40 to 80 wt% of a polycarbonate resin. When the amount of the polycarbonate resin is less than 40 wt%, the impact resistance and heat resistance of the final commercial molded article containing the thermoplastic resin composition may be poor. When the amount of the polycarbonate resin exceeds 80 wt%, the amounts of the aromatic polyester resin and the inorganic filler in the thermoplastic resin composition decrease, and thus the moldability and mechanical stiffness (mechanical hardness) are poor.

[0044] The polycarbonate resin can be prepared by a method of reacting a diphenol-based compound with phosgene, a haloformate, or a carbonic acid diester, including but not limited to this, and can be prepared by various methods used in the art to which the present disclosure pertains.

[0045] In one embodiment, at least a part of the polycarbonate resin can be a post-consumer recycled polycarbonate (PCR-PC) resin. The PCR-PC resin can refer to a product containing plastic that is discharged after being used by the end consumer, recovered from the source, and then mechanically and chemically recycled.

[0046] Mechanical recycling can refer to crushing the collected plastic, washing and melting the plastic to form pellets, and mixing the plastic in pellet form with a pure raw material containing polycarbonate at a predetermined ratio for reuse. Chemical recycling can refer to a method of extracting only a specific polymer from the plastic or recovering a specific polymer as a pure monomeric substance for repolymerization.

[0047] The polycarbonate resin recovered by this process can have a chemical composition similar to or the same as that of the polycarbonate resin produced from petrochemical raw materials.

[0048] The thermoplastic resin composition according to the present disclosure can contain 10 to 30 wt% of the PCR-PC resin. When the amount of the PCR-PC resin is less than 10 wt%, the eco-friendliness may be insufficient. When the amount of the PCR-PC resin exceeds 30 wt%, the process cost may increase.

[0049] In one embodiment, the polycarbonate resin can include at least one selected from the group consisting of or consisting of bisphenol-A-polycarbonate resin, tetramethyl-polycarbonate resin, bisphenol-Z-polycarbonate resin, tetrabromo-polycarbonate resin, tetraacrylo-polycarbonate resin, or any combination thereof. In one example, bisphenol-A-polycarbonate resin is used to obtain excellent compatibility and impact resistance.

[0050] In one embodiment, the polycarbonate resin may have a weight-average molecular weight (Mw) in the range of 10,000 to 40,000. When the weight-average molecular weight of the polycarbonate resin is less than 10,000, the impact resistance of the molded body containing the thermoplastic resin composition may be poor. When the weight-average molecular weight of the polycarbonate resin exceeds 40,000, the dispersibility and elongation rate of the thermoplastic resin composition may be poor. In addition, the impact resistance of the molded body containing the thermoplastic resin composition may be poor.

[0051] In one example, the polycarbonate resin has a weight-average molecular weight in the range of 15,000 to 35,000. When the weight-average molecular weight of the polycarbonate resin falls within the above numerical range, the impact resistance and heat resistance temperature of the molded body containing the thermoplastic resin composition can be significantly improved.

[0052] In one embodiment, the polycarbonate resin may have a melt flow index in the range of 10 to 35 grams per 10 minutes (g / 10min) measured under the conditions of a temperature of 300 °C and a load of 1.2 kg according to ISO 1133 standard. In addition, the PCR-PC resin may have a melt flow index in the range of 10 to 35 g / 10min measured under the conditions of a temperature of 300 °C and a load of 1.2 kg according to ISO 1133 standard.

[0053] When the melt flow index of the polycarbonate resin or PCR-PC resin is less than 10 g / 10min, the fluidity of the thermoplastic resin composition may be poor, resulting in deterioration of moldability. When the melt flow index of the polycarbonate resin or PCR-PC resin exceeds 35 g / 10min, the mechanical properties of the thermoplastic resin composition and the molded body including it may deteriorate.

[0054] (B) Polycarbonate-polysiloxane copolymer resin

[0055] According to the present disclosure, the thermoplastic resin composition may contain 1 to 20 wt% of a polycarbonate-polysiloxane copolymer resin. When the amount of the polycarbonate-polysiloxane copolymer resin is less than 1 wt%, the mold release property may be poor, and the impact resistance of the finally commercialized plastic molded body may be poor, especially at low temperatures. When the amount of the polycarbonate-polysiloxane copolymer resin exceeds 20 wt%, the reduction of the heat resistance temperature of the thermoplastic resin may lead to deterioration of heat resistance deformation.

[0056] The polycarbonate-polysiloxane copolymer can be formed by copolymerizing a polycarbonate block and a poly(diorganosiloxane) block. A monomer mixture of a polycarbonate block monomer and a poly(diorganosiloxane) block monomer mixed in a weight ratio in the range of 70:30 to 90:10 can be copolymerized.

[0057] In this case, the poly(diorganosiloxane) block monomer can be included in an amount in the range of 10 to 30 wt% in the monomer mixture. When the amount of the poly(diorganosiloxane) block monomer is less than 10 wt%, the ductility of the thermoplastic resin may be poor, resulting in deterioration of the surface impact strength of the molded body. When the amount of the poly(diorganosiloxane) block monomer exceeds 30 wt%, the low glass transition temperature of the poly(diorganosiloxane) block may cause a decrease in the heat resistance temperature of the thermoplastic resin composition.

[0058] In one embodiment, the polycarbonate-polysiloxane copolymer resin may have a melt flow index in the range of 1 to 10 g / 10 min measured at a temperature of 300 °C under a load of 1.2 kg according to the ISO 1133 standard. When the melt flow index of the polycarbonate-polysiloxane copolymer resin is less than 1 g / 10 min, the thermoplastic resin composition may have poor fluidity, which results in deterioration of moldability. When the melt flow index of the polycarbonate-polysiloxane copolymer resin exceeds 10 g / 10 min, the mechanical properties of the thermoplastic resin composition and the molded body including the same may deteriorate.

[0059] (C) Aromatic polyester resin

[0060] According to the present disclosure, the thermoplastic resin composition may include 5 to 30 wt% of an aromatic polyester resin. When the amount of the aromatic polyester resin is less than 5 wt%, the moldability and chemical resistance may be poor.

[0061] In one embodiment, the aromatic polyester resin may have an intrinsic viscosity in the range of 0.6 to 1.3 deciliters per gram (dL / g). When the intrinsic viscosity of the aromatic polyester resin does not fall within the above numerical range, the impact strength, tensile strength, heat resistance temperature, light resistance, and chemical resistance of the final molded body may be poor.

[0062] An aromatic polyester resin can generally be obtained by polycondensation of terephthalic acid (TPA), isophthalic acid (IPA), 1,2-naphthalenedicarboxylic acid, 1,4-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, 1,6-naphthalenedicarboxylic acid, 1,7-naphthalenedicarboxylic acid, 1,8-naphthalenedicarboxylic acid, 2,3-naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, dimethyl terephthalate (DMT), an aromatic dicarboxylate in which the acid is replaced by a dimethyl group, dimethyl isophthalate, an alkyl ester of naphthalenedicarboxylic acid or dimethyl 1,2-naphthalenedicarboxylate, dimethyl 1,5-naphthalenedicarboxylate, dimethyl 1,6-naphthalenedicarboxylate, dimethyl 1,7-naphthalenedicarboxylate, dimethyl 1,8-naphthalenedicarboxylate, dimethyl 2,3-naphthalenedicarboxylate, dimethyl 2,6-naphthalenedicarboxylate, dimethyl 2,7-naphthalenedicarboxylate, or any mixture thereof. The aromatic polyester resin can also be obtained by polycondensation of ethylene glycol having 2 to 12 carbon atoms, 1,2-propanediol, 1,3-propanediol, 2,2-dimethyl-1,3-propanediol, 2,2-dimethyl-1,3-propanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, or any mixture thereof, which can be easily implemented by those of ordinary skill in the art to which the present disclosure pertains.

[0063] The aromatic polyester resin can be a component in which inorganic particles are mixed by an existing method. The inorganic particles can be titanium dioxide (TiO2), silicon dioxide (SiO2), or aluminum hydroxide (Al(OH)3), but are not limited thereto.

[0064] In one embodiment, the aromatic polyester resin can include at least one selected from the group consisting of or consisting of polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyethylene terephthalate glycol (PETG), or any combination thereof.

[0065] (D) Graft copolymer resin

[0066] According to the present disclosure, the thermoplastic resin composition can contain 1 to 20 wt% of a graft copolymer resin, in which a rubber polymer, an aromatic vinyl monomer, and a vinyl cyanide monomer are polymerized by graft polymerization. In this case, the rubber polymer of the graft copolymer resin can include a diene-based rubber polymer.

[0067] In one embodiment, the diene-based rubber polymer may include at least one selected from the group consisting of or comprising polybutadiene, a butadiene-aromatic vinyl compound copolymer, a butadiene-vinyl cyanide compound copolymer, polyisoprene, or any combination thereof. The butadiene-aromatic vinyl compound copolymer may include a butadiene-styrene copolymer and a butadiene-vinyltoluene copolymer. The butadiene-vinyl cyanide compound copolymer may include a butadiene-acrylonitrile copolymer and a butadiene-methacrylonitrile copolymer.

[0068] The graft copolymer resin includes a first graft copolymer resin and a second graft copolymer resin, each of which is described below.

[0069] (D-1) First graft copolymer resin

[0070] The thermoplastic resin composition may contain 1 to 10 wt% of the first graft copolymer resin. When the amount of the first graft copolymer resin is less than 1 wt%, the impact strength characteristics may be poor. On the contrary, when the amount of the first graft copolymer resin exceeds 10 wt%, the glass transition temperature of the thermoplastic resin composition may decrease, resulting in deterioration of heat resistance.

[0071] In one embodiment, the first graft copolymer resin may be polymerized by graft polymerization of a diene-based rubber polymer of 55 to 65 wt% with a monomer mixture of 35 to 45 wt% of an aromatic vinyl monomer and a vinyl cyanide monomer.

[0072] The first graft copolymer resin may be polymerized using known polymerization methods such as emulsion polymerization, suspension polymerization, solution polymerization, block polymerization, or a combination of two or more of them. During the graft polymerization, if necessary, the monomer mixture may be simultaneously given to the diene-based rubber polymer together with known emulsifiers, polymerization initiators, catalysts, etc., or may be continuously given for a predetermined period. The graft copolymer resin initially obtained by graft polymerization may be obtained in the form of a latex, or may be obtained in the form of a powdery solid by treating the resin with an acid or a salt, followed by coagulation and drying.

[0073] The first graft copolymer resin may be prepared by an emulsion polymerization method, which helps to control the particle size, but is not limited thereto. The first graft copolymer resin may be polymerized by graft polymerization of a monomer mixture of an aromatic vinyl monomer and a vinyl cyanide monomer mixed in a weight ratio in the range of 60:40 to 80:20 in the diene-based rubber polymer. In addition, based on the total weight of the monomer mixture, the monomer mixture may further include 0 to 20 wt% of a mono-vinyl monomer.

[0074] In one embodiment, based on the total weight of the monomer mixture, the vinyl cyanide monomer may be included in the monomer mixture in an amount of 20 to 40 wt%. When the amount of the vinyl cyanide monomer is less than 20 wt%, the kneadability and impact resistance of the final molded body may be significantly poor. When the amount of the vinyl cyanide monomer exceeds 40 wt%, the surface characteristics may be poor due to yellowing that occurs when molding the thermoplastic resin composition at high temperature. In addition, the kneadability with other resins may be poor.

[0075] The monovinyl monomer may include at least one selected from the group consisting of or consisting of maleimide, N-methyl maleimide, N-ethyl maleimide, N-propyl maleimide, N-phenyl maleimide, methyl methacrylate, methyl acrylate, butyl acrylate, acrylic acid, maleic anhydride, or any combination thereof, but not limited thereto.

[0076] The first graft copolymer resin may have a graft ratio in the range of 30% to 40%, an average particle diameter in the range of 0.2 to 0.5 micrometers (μm), and a weight average molecular weight in the range of 105,000 to 120,000 grams per mole (g / mol). When the graft ratio of the first graft copolymer resin does not fall within the above numerical range, the dispersibility of the thermoplastic resin composition may be reduced, resulting in deterioration of moldability and heat resistance performance.

[0077] The graft ratio can be obtained from Equation 1 below.

[0078] Equation 1

[0079]

[0080] In Equation 1 above, G is the graft ratio (%), M g is the weight (g) of the monomer polymerized by graft polymerization in the rubber polymer, and W c is the weight (g) of the rubber polymer.

[0081] (D-2) Second graft copolymer resin

[0082] The thermoplastic resin composition may contain 1 to 10 wt% of the second graft copolymer resin. When the amount of the second graft copolymer resin is less than 1 wt%, the appearance quality (including gloss and color realization) may be poor. When the amount of the second graft copolymer resin exceeds 10 wt%, the compatibility with other resins may be poor due to an increase in viscosity, resulting in deterioration of mechanical properties.

[0083] In one embodiment, the second graft copolymer resin may be polymerized by graft polymerization of a diene-based rubber polymer in an amount of 45 to 55 wt% with a monomer mixture of an aromatic vinyl monomer and a vinyl cyanide monomer in an amount of 45 to 55 wt%.

[0084] The second graft copolymer resin can be polymerized by using known polymerization methods such as emulsion polymerization, suspension polymerization, solution polymerization, block polymerization, or a combination of two or more of them. During the graft polymerization, if necessary, the monomer mixture can be simultaneously fed together with known emulsifiers, polymerization initiators, catalysts, etc. to the diene-based rubber polymer, or can be continuously fed for a predetermined period of time. The graft copolymer resin initially obtained by graft polymerization can be obtained in the form of a latex, or can be obtained in the form of a powdery solid by treating the resin with an acid or a salt, followed by coagulation and drying.

[0085] The second graft copolymer resin can be prepared by an emulsion polymerization method, which helps to control the particle size, but is not limited thereto.

[0086] The second graft copolymer resin can be polymerized by graft-polymerizing a monomer mixture of an aromatic vinyl monomer and a vinyl cyanide monomer mixed in a weight ratio in the range of 60:40 to 80:20 in the diene-based rubber polymer. In addition, based on the total weight of the monomer mixture, the monomer mixture can further include 0 to 20 wt% of a mono-vinyl monomer.

[0087] In one embodiment, the second graft copolymer resin can have a grafting rate in the range of 40% to 50%, an average particle size in the range of 0.05 to 0.15 μm, and a weight average molecular weight in the range of 90,000 to 105,000 g / mol. When the grafting rate of the second graft copolymer resin does not fall within the above numerical range, the dispersibility of the thermoplastic resin composition may be reduced, which results in deterioration of moldability and heat resistance. On the other hand, the grafting rate can be obtained from Equation 1 above.

[0088] (D-3) Initiator

[0089] In one embodiment, based on 100 parts by weight of the diene-based rubber polymer and the monomer mixture, each of the first graft copolymer and the second graft copolymer can further contain 0.1 to 4.0 parts by weight of an initiator.

[0090] In one embodiment, the initiator may include at least one selected from the group consisting of or comprising succinic peroxide, benzoyl peroxide, tert-butyl lauroperoxide, 2,5-dimethyl-2,5-di(benzoyl peroxide)hexane, tert-butyl peracetate, di-tert-butyl diperphthalate, tert-butyl peroxymaleate, cyclohexanone peroxide, tert-butyl hydroperoxide, tert-butyl peroxy-2-ethylhexanoate, p-chlorobenzoyl peroxide, tert-butyl peroxyisobutyrate, tert-butyl peroxyisopropyl carbonate, tert-butyl peroxybenzoate, dicumyl peroxide, 2,5-dimethyl-2,5-di(tert-butyl-peroxy)hexane, tert-butyl cumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane-3,α'-bis(tert-butylperoxy)-1,4-diisopropylbenzene, or any combination thereof.

[0091] In addition, the initiator may include a first initiator containing one peroxide group and a second initiator containing two or more peroxide groups, and the initiator may include the first initiator and the second initiator in a weight ratio in the range of 40:60 to 60:40.

[0092] (E) Inorganic filler

[0093] According to the present disclosure, the thermoplastic resin composition may contain 5 to 30 wt% of an inorganic filler. When the amount of the inorganic filler is less than 5 wt%, the dimensional stability of the finally commercialized plastic molded body may be low, the heat-resistant temperature may be reduced, and the mechanical rigidity may be poor. When the amount of the inorganic filler exceeds 30 wt%, poor impact resistance and low fluidity may cause deterioration of the appearance quality.

[0094] In one embodiment, the inorganic filler may include at least one selected from the group consisting of or comprising acicular inorganic materials, plate-like inorganic materials, quicklime, sepiolite, or any combination thereof. The inorganic filler may be a mixture of acicular inorganic materials and plate-like inorganic materials. The inorganic filler may be a mixture of acicular inorganic materials and plate-like inorganic materials in a weight ratio in the range of 30:70 to 70:30.

[0095] In one embodiment, the acicular inorganic material may include at least one selected from the group consisting of or comprising whiskers, wollastonite, glass fiber, basalt fiber, or any combination thereof.

[0096] For example, the whiskers can be potassium titanate whiskers, magnesium sulfate whiskers, calcium carbonate whiskers, or aluminum borate whiskers. In addition, wollastonite can be subjected to a hydrophobic surface treatment. Further, the glass fiber can be a glass fiber reinforcement, in which glass filaments coated with a sizing agent such as epoxy, polyurethane, or silane are aggregated to form a fiber, but is not limited thereto. In this case, based on 100 parts by weight of the glass filaments, the sizing agent can be included in an amount of 0.05 to 0.1 parts by weight, but is not limited thereto.

[0097] In addition, the acicular inorganic material has an acicular (fibrous) form and can have an average diameter (D) in the range of 0.1 μm to 20 μm, which in one example is in the range of 1.0 μm to 15 μm, and can have an average length (L) in the range of 1 μm to 3,000 μm, which in one example is in the range of 100 μm to 3,000 μm. Further, the aspect ratio (L / D) of the average length to the average diameter can be in the range of 10 to 200, which in one example is in the range of 20 to 100.

[0098] In one embodiment, the plate-shaped inorganic material can include at least one selected from the group consisting of or consisting of talc, mica, kaolin, or any combination thereof.

[0099] The plate-shaped inorganic material has a thin film form, in which the Z-axis length (thickness) is smaller than the cross-sectional area represented by the X-axis length and the Y-axis length. The thin film can have an average thickness in the range of 30 to 700 nanometers (nm), which in one example is in the range of 30 to 300 nm, and can have an average particle size in the range of 0.5 to 20 μm, which in one example is in the range of 1.0 to 10.0 μm. Further, the aspect ratio (diameter / thickness) of the average diameter (average of the X-axis length and the Y-axis length) to the average thickness (Z-axis length) is in the range of 4 to 30, which in one example is in the range of 10 to 30.

[0100] The average particle size of the plate-shaped inorganic material refers to the median of the particle size distribution measured by X-ray transmission. Specifically, the particle size distribution of the plate-shaped inorganic material can be obtained by passing the sedimented particles through X-rays. Then, the average particle size can be obtained by calculating the median.

[0101] (F) Organic phosphate compound

[0102] According to the present disclosure, the thermoplastic resin composition may contain 0.01 to 1 wt% of an organophosphate compound. When the amount of the organophosphate compound does not fall within the above numerical range, it may be difficult to inhibit the thermal decomposition reaction of the polycarbonate resin generated during the production of a molded body or the like. Therefore, metal ions contained in the inorganic filler to enhance the dimensional stability of the thermoplastic resin composition accelerate the thermal decomposition of the polycarbonate resin, resulting in deterioration of impact resistance, dimensional stability, and appearance quality.

[0103] In one embodiment, the organophosphate compound may include at least one selected from the group consisting of or comprising monomeric phosphates, monomeric phosphonates, oligomeric phosphates, oligomeric phosphonates, phosphonate amines, phosphazenes, or any combination thereof, but is not limited thereto.

[0104] (G) Vinyl-based copolymer resin

[0105] According to the present disclosure, the thermoplastic resin composition may contain 1 to 5 wt% of a vinyl-based copolymer resin. When the amount of the vinyl-based copolymer resin is less than 1 wt%, the compatibility between the polycarbonate resin and the graft copolymer resin may be poor, resulting in deterioration of mechanical properties (including impact resistance). When the amount of the vinyl-based copolymer resin exceeds 5 wt%, an increase in the viscosity of the thermoplastic resin may lead to deterioration of moldability.

[0106] In one embodiment, the vinyl-based copolymer resin may include a copolymer of an aromatic vinyl monomer and a vinyl cyanide monomer.

[0107] In addition, the vinyl-based copolymer resin may be polymerized by graft-polymerizing one selected from the group consisting of or comprising an acid anhydride monomer, an acrylate monomer, or any combination thereof, but is not limited thereto, in a copolymer of an aromatic vinyl monomer and a vinyl cyanide monomer.

[0108] In this case, the vinyl-based copolymer resin may be polymerized by graft-polymerizing 99.0 to 99.9 mol% of a copolymer of an aromatic vinyl monomer and a vinyl cyanide monomer with 0.1 to 1.0 mol% of one selected from the group consisting of or comprising an acid anhydride monomer, an acrylate monomer, or any combination thereof.

[0109] The acid anhydride monomer may include at least one selected from the group consisting of or consisting of maleic anhydride, 2-methylmaleic anhydride, 2,3-dimethylmaleic anhydride, 2-ethylmaleic anhydride, 2,3-diethylmaleic anhydride, 2-trifluoromethylmaleic anhydride, 2,3-bis(trifluoromethyl)maleic anhydride, 2-methyl-3-trifluoromethylmaleic anhydride, citraconic anhydride, aconitic anhydride, itaconic anhydride, or any combination thereof, but not limited thereto.

[0110] The acrylate monomer may include at least one selected from the group consisting of or consisting of glycidyl methacrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-hydroxyethyl methacrylate, or any combination thereof, but not limited thereto.

[0111] (H) Additive

[0112] As needed, the thermoplastic resin composition may further contain other additives.

[0113] Additives for additionally providing various functions to the thermoplastic resin composition may include at least one selected from the group consisting of or consisting of common stabilizers, lubricants, metal soaps, ultraviolet absorbers, plasticizers, colorants (pigments and dyes), glass fibers, fillers (silica, wood powder, etc.), flame retardants, anti-dripping agents, antibacterial agents, antifungal agents, or any combination thereof, but not limited thereto.

[0114] In particular, the flame retardant can provide flame retardancy to a thermoplastic resin composition having poor heat resistance and flame resistance, and can be classified into halogen-based flame retardants, inorganic flame retardants, phosphorus-based flame retardants, and melanin-based flame retardants according to the components.

[0115] Halogen-based flame retardants can be classified into bromine-based flame retardants and chlorine-based flame retardants. Even a small amount of bromine-based flame retardants can provide excellent flame retardant effects, but plastics are non-recyclable and may emit toxic environmental pollutants such as dioxins when burned.

[0116] Inorganic flame retardants may include, for example, aluminum hydroxide, antimony oxide, magnesium hydroxide, zinc stannate, molybdate, guanidine, zirconium, etc. Such aluminum hydroxide is non-toxic, low-smoke, has excellent electrical insulation, and is affordable, but its decomposition temperature range is 180°C to 220°C. For this reason, aluminum hydroxide is only suitable for plastics with low processing temperatures. In addition, the mechanical properties and processability of plastic materials may deteriorate because a large amount is required to provide flame retardancy.

[0117] Phosphorus-based flame retardants can include, for example, red phosphorus, ammonium phosphate, ammonium polyphosphate, haloalkyl phosphate / salts, etc. Phosphorus-based flame retardants exhibit excellent flame retardant effects in solid-state reactions and may be particularly effective for plastics containing a large amount of oxygen.

[0118] Melanin-based flame retardants can include, for example, melanin phosphate, melanin cyanurate, etc. Melanin-based flame retardants do not produce toxic gases during combustion and produce less smoke, thus reducing the risk of environmental pollution.

[0119] As described above, according to the present disclosure, the thermoplastic resin composition has improved plating properties such as conductivity, plating adhesion, and appearance. Therefore, a separate electroless plating process can be omitted during the plating process, thereby improving eco-friendliness and plating process efficiency. At the same time, the thermoplastic resin composition exhibits excellent impact strength and can thus be used as a suitable material for automotive interior materials and exterior materials.

[0120] Plastic molded body

[0121] Another aspect of the present disclosure provides a molded body including the composition according to various embodiments mentioned above. In other words, the molded body can be prepared by molding the thermoplastic resin composition.

[0122] The molded body is applicable to various fields according to the purpose, including automobiles, ships, and interior and exterior materials for construction.

[0123] In one embodiment, the molded body can have a cantilever beam impact strength (according to ISO 180) in the range of 5 to 20 joules per square meter (J / m 2 ), a tensile strength (according to ISO 527) in the range of 50 to 70 megapascals (MPa), a heat resistance temperature (at 1.8 MPa, according to ISO 75) in the range of 110°C to 120°C, a flexural strength (according to ISO178) in the range of 75 to 95 MPa, and a flexural modulus (according to ISO 178) in the range of 2,500 to 3,500 MPa.

[0124] Hereinafter, the present disclosure will be described in detail with reference to the following examples and comparative examples. However, the technical concept of the present disclosure is not limited thereto.

[0125] Examples 1-5 and Comparative Examples 1-7

[0126] Mix (A-1) polycarbonate resin, (A-2) post-consumer recycled polycarbonate (PCR-PC) resin, (B) polycarbonate-polysiloxane copolymer resin, (C) aromatic polyester resin, (D-1) first graft copolymer resin, (D-2) second graft resin, (E) inorganic filler, (F) organophosphate compound, and (G) vinyl copolymer resin according to the composition ratios shown in Table 1 below.

[0127] Then, melt-knead the resulting product using an extruder with a screw diameter ∮ of 30 mm and an L / D ratio of 44 (at a barrel set temperature of 250 °C), and then cut it to prepare a thermoplastic resin composition in the form of pellets.

[0128] The specific compositions used in the process of preparing the thermoplastic resin composition are as follows:

[0129] -(A-1) A polycarbonate resin (PC-1220S, purchased from LOTTE Chemical) having a melt flow index of about 22 g / 10 min measured under the conditions of a temperature of 300 °C and a load of 1.2 kg according to ISO 1133 standard;

[0130] -(A-2) A PCR-PC resin (PC-T20, purchased from Topcentral) having a melt flow index of about 22 g / 10 min measured under the conditions of a temperature of 300 °C and a load of 1.2 kg according to ISO 1133 standard;

[0131] -(B) A polycarbonate-polysiloxane copolymer resin (CLARNATE S2060, purchased from Wanhua), having a melt flow index of about 2 g / 10 min measured under the conditions of a temperature of 300 °C and a load of 1.2 kg according to ISO 1133 standard;

[0132] -(C) A polyethylene terephthalate resin (FHH22130, purchased from Toray) having an intrinsic viscosity of 0.8 dL / g according to ISO 1628 standard;

[0133] -(D-1) A first graft copolymer resin (purchased from Kumho Petrochemical), polymerized by emulsion graft polymerization of a 59 wt% diene-based rubber polymer with a monomer mixture of 41 wt% of an aromatic vinyl monomer and a vinyl cyan monomer mixed in a weight ratio of 75:25, and the first graft copolymer resin has a grafting rate of 35% and a weight average molecular weight of 110,000 g / mol;

[0134] -(D-2) Second graft copolymer resin (purchased from Kumho Petrochemical), polymerized by emulsion graft polymerization of 50 wt% of a diene-based rubber polymer and 50 wt% of a monomer mixture of an aromatic vinyl monomer and a vinyl cyanide monomer mixed at a weight ratio of 75:25, the second graft copolymer resin having a grafting rate of 45% and a weight average molecular weight of 100,000 g / mol;

[0135] -(E) Talc (KC2000C, purchased from Kotz), having a median particle size (D50) of about 4.5 μm measured by a laser particle size analyzer (Mastersizer 3000, purchased from Malvern Panalytical);

[0136] -(F) Stearyl phosphate (ADK STAB AX-71, purchased from Adeka); and

[0137] -(G) Aromatic vinyl monomer, vinyl cyanide monomer and glycidyl methacrylate copolymer resin (SAG-005, purchased from Fine-blend Polymer).

[0138] Table 1

[0139]

[0140] (Unit: wt%)

[0141] Experimental example

[0142] To evaluate the physical properties of the thermoplastic resin compositions prepared in Examples 1-5 and Comparative Examples 1-7, specimens of the thermoplastic resin compositions were prepared using an injection molding machine under the conditions where the cylinder set temperature was 260 °C and the mold temperature was 80 °C. Then, the physical properties of each specimen were evaluated by the following methods:

[0143] - Impact strength (kJ / m 2 ) : Evaluated in terms of the Izod impact strength according to ISO 180;

[0144] - Tensile strength (MPa) : Measured according to ISO 527;

[0145] - Heat resistance temperature (at 1.8 MPa, °C) : Measured in terms of the heat deflection temperature according to ISO 75;

[0146] - Flexural strength (MPa) : Measured according to ISO 178;

[0147] - Flexural modulus (MPa) : Measured according to ISO 178; and

[0148] - Dimensional stability (μm / m*°C): Measured in terms of the coefficient of linear expansion at temperatures in the range of -30°C to 100°C in the resin flow direction using a thermomechanical analyzer according to ISO 11359, where the lower the coefficient of linear expansion, the better the dimensional stability.

[0149] Table 2

[0150]

[0151]

[0152] As can be confirmed from Table 1 and Table 2 above, excellent heat resistance temperature and mechanical rigidity are exhibited by using the optimal amounts of polycarbonate resin, polycarbonate-polysiloxane copolymer resin, aromatic polyester resin, graft copolymer resin, inorganic filler, and organophosphate compound.

[0153] In addition, it is confirmed that the dimensional stability is improved while maintaining a low coefficient of linear expansion.

[0154] In addition, even when the PCR-PC resin is applied to the thermoplastic resin composition, it is confirmed that there is no change in heat resistance temperature, mechanical rigidity, and coefficient of linear expansion.

[0155] Although embodiments of the present disclosure have been disclosed for illustrative purposes, those of ordinary skill in the art will understand that various changes and modifications can be made by adding, changing, deleting elements, etc., without departing from the spirit and scope of the present disclosure.

Claims

1. A thermoplastic resin composition, the composition comprising: 40 to 80 wt% of a polycarbonate resin; 1 to 20 wt% of a polycarbonate-polysiloxane copolymer resin; 5 to 30 wt% of an aromatic polyester resin; 1 to 20 wt% of a graft copolymer resin, wherein, A rubber polymer, an aromatic vinyl monomer, and a vinyl cyanide monomer are polymerized by graft polymerization; 5 to 30 wt% of an inorganic filler; 0.01 to 1 wt% of an organic phosphate compound; and 1 to 5 wt% of a vinyl-based copolymer resin.

2. The composition according to claim 1, wherein the polycarbonate resin has a melt flow index in the range of 10 to 35 g / 10 min measured at a temperature of 300 °C under a load of 1.2 kg according to ISO 1133 standard.

3. The composition according to claim 1, wherein: At least a part of the polycarbonate resin comprises post-consumer recycled polycarbonate resin; Based on the weight of the composition, the post-consumer recycled polycarbonate resin is contained in an amount of 10 to 30 wt%; and The post-consumer recycled polycarbonate resin has a melt flow index in the range of 10 to 35 g / 10 min measured at a temperature of 300 °C under a load of 1.2 kg according to ISO 1133 standard.

4. The composition according to claim 1, wherein the polycarbonate-polysiloxane copolymer resin has a melt flow index in the range of 1 to 10 g / 10 min measured at a temperature of 300 °C under a load of 1.2 kg according to ISO 1133 standard.

5. The composition according to claim 1, wherein the aromatic polyester resin includes polybutylene terephthalate, polyethylene terephthalate, polyethylene terephthalate diol, or any combination thereof.

6. The composition according to claim 1, wherein the rubber polymer of the graft copolymer resin includes a diene-based rubber polymer.

7. The composition according to claim 6, wherein: The diene-based rubber polymer includes polybutadiene, a butadiene-aromatic vinyl compound copolymer, a butadiene-vinyl cyanide compound copolymer, polyisoprene, or any combination thereof; The butadiene-aromatic vinyl compound copolymer includes a butadiene-styrene copolymer and a butadiene-vinyl toluene copolymer; and The butadiene-vinyl cyanide compound copolymer includes a butadiene-acrylonitrile copolymer and a butadiene-methacrylonitrile copolymer.

8. The composition according to claim 1, wherein: The graft copolymer resin comprises a first graft copolymer resin and a second graft copolymer resin; Based on the total weight of the composition, each of the first graft copolymer resin and the second graft copolymer resin is contained in the graft copolymer resin in an amount of 1 to 10 wt%; The first graft copolymer resin is polymerized by graft polymerization of 55 to 65 wt% of a diene-based rubber polymer with a monomer mixture of 35 to 45 wt% of the aromatic vinyl monomer and the vinyl cyanide monomer, and The second graft copolymer resin is polymerized by graft polymerization of 45 to 55 wt% of a diene-based rubber polymer with a monomer mixture of 45 to 55 wt% of the aromatic vinyl monomer and the vinyl cyanide monomer.

9. The composition according to claim 8, wherein: The diene-based rubber polymer includes polybutadiene, a butadiene-aromatic vinyl compound copolymer, a butadiene-vinyl cyanide compound copolymer, polyisoprene, or any combination thereof; The butadiene-aromatic vinyl compound copolymer includes a butadiene-styrene copolymer and a butadiene-vinyltoluene copolymer; and The butadiene-vinyl cyanide compound copolymer includes a butadiene-acrylonitrile copolymer and a butadiene-methacrylonitrile copolymer.

10. The composition according to claim 8, wherein the first graft copolymer resin has a grafting rate in the range of 30% to 40%, an average particle size in the range of 0.2 to 0.5 μm, and a weight average molecular weight in the range of 105,000 to 120,000 g / mol.

11. The composition according to claim 8, wherein the second graft copolymer resin has a grafting rate in the range of 40% to 50%, an average particle size in the range of 0.05 to 0.15 μm, and a weight average molecular weight in the range of 90,000 to 105,000 g / mol.

12. The composition according to claim 8, wherein based on 100 parts by weight of the diene-based rubber polymer and the aromatic vinyl monomer, each of the first graft copolymer resin and the second graft copolymer resin further contains 0.1 to 4.0 parts by weight of an initiator.

13. The composition according to claim 12, wherein the initiator includes succinic peroxide, benzoyl peroxide, tert-butyl lauroperoxide, 2,5-dimethyl-2,5-di(benzoyl peroxide)hexane, tert-butyl peracetate, di-tert-butyl diperphthalate, tert-butyl maleate peroxide, cyclohexanone peroxide, tert-butyl hydroperoxide, tert-butyl 2-ethylhexanoate peroxide, p-chlorobenzoyl peroxide, tert-butyl isobutyrate peroxide, tert-butyl isopropyl carbonate peroxide, tert-butyl benzoate peroxide, dicumyl peroxide, 2,5-dimethyl-2,5-di(tert-butyl-peroxy)hexane, tert-butyl cumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-2,5-di(tert-butyl peroxy)hexane-3,α'-bis(tert-butylperoxy)-1,4-diisopropylbenzene, or any combination thereof.

14. The composition according to claim 1, wherein the inorganic filler includes acicular inorganic materials, plate-like inorganic materials, quicklime, sepiolite, or any combination thereof.

15. The composition according to claim 14, wherein the acicular inorganic materials include whiskers, wollastonite, glass fiber, basalt fiber, or any combination thereof.

16. The composition according to claim 14, wherein the plate-like inorganic materials include talc, mica, kaolin, or any combination thereof.

17. The composition according to claim 1, wherein the organophosphate compound comprises a monomeric phosphate, a monomeric phosphonate, an oligomeric phosphate, an oligomeric phosphonate, a phosphonate amine, a phosphazene, or any combination thereof.

18. The composition according to claim 1, wherein the vinyl-based copolymer resin comprises a copolymer of an aromatic vinyl monomer and a vinyl cyanide monomer.

19. The composition according to claim 18, wherein the vinyl-based copolymer resin is polymerized by graft polymerization of an acid anhydride monomer, an acrylate monomer, or any combination thereof in the copolymer of the aromatic vinyl monomer and the vinyl cyanide monomer.

20. The composition according to claim 19, wherein the vinyl-based copolymer resin is polymerized by graft polymerization of 99.0 to 99.9 mol% of the copolymer of the aromatic vinyl monomer and the vinyl cyanide monomer with 0.1 to 1.0 mol% of the acid anhydride monomer, the acrylate monomer, or any combination thereof.

21. The composition according to claim 1, wherein the vinyl-based copolymer resin comprises glycidyl methacrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-hydroxyethyl methacrylate, or any combination thereof.

22. A molded body comprising the composition according to any one of claims 1-21.

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