Polycarbonate resin composition and molded article containing the same

Abstract

To provide a polycarbonate-based resin composition which achieves improved rigidity, heat resistance, moldability (flowability), dimensional stability and appearance of the resulting molded article, and also to provide a molded article containing the same.SOLUTION: A polycarbonate-based resin composition contains, with respect to 100 pts.mass of a resin component composed of 20-99 mass% of a polycarbonate resin (A) and 1-80 mass% of an acrylonitrile-butadiene-styrene resin (B), 0-10 pts.mass of an acrylic triblock copolymer (C) that contains a polymer block (a) containing an acrylate monomer unit and a polymer block (b) containing a methacrylate monomer unit, and 5-30 pts.mass of an inorganic filler (D).SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a resin composition obtained by blending an acrylic copolymer into a composition comprising a polycarbonate resin, an acrylonitrile-butadiene-styrene resin, and a specific inorganic filler, and a molded article containing the same.

Background Art

[0002] As a general-purpose engineering plastic, polycarbonate resin is a thermoplastic resin excellent in transparency, impact resistance, heat resistance, dimensional stability, etc. Due to its excellent properties, it is widely used in fields such as electric and electronic, ITE, machinery, and automobiles.

[0003] However, polycarbonate resin has a problem that its melt viscosity is high and its moldability is poor. As the thinning and enlargement of molded articles progress, there is a strong demand to improve the moldability (fluidity).

[0004] As a means to solve the above problems, many compositions obtained by blending a rubber-modified styrene-based resin into polycarbonate resin have been proposed. For improving the moldability of polycarbonate resin, compositions obtained by blending styrene-based resins such as acrylonitrile-butadiene-styrene resin (ABS resin), rubber-modified polystyrene resin (high impact polystyrene: HIPS), acrylonitrile-styrene resin (AS resin), etc. into polycarbonate resin have been used in many molding fields as polymer alloys due to their heat resistance and moldability.

[0005] Also, as a method for improving the moldability of polycarbonate resin, a method of adding not only styrene-based resins but also phosphate ester-based compounds has been proposed (Patent Documents 1 to 3).

[0006] However, these resin compositions cannot simultaneously satisfy the heat resistance, moldability, rigidity, dimensional stability (low linear expansion rate), etc. required for automotive exterior parts.

[0007] While it is common practice to add glass fibers, carbon fibers, and other fibrous fillers to improve the rigidity, heat resistance, and dimensional stability of materials, the addition of these fibrous fillers results in a poor appearance of the molded product, making it difficult to obtain a good painted finish. Therefore, improvements were needed. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 6-228426 [Patent Document 2] Japanese Patent Application Publication No. 8-151493 [Patent Document 3] Patent No. 3638806 [Overview of the project] [Problems that the invention aims to solve]

[0009] The present invention aims to provide a polycarbonate-based resin composition with improved rigidity, heat resistance, moldability (fluidity), dimensional stability, and molded product appearance, as well as a molded product containing the same. [Means for solving the problem]

[0010] In view of the above problems, the inventors conducted diligent research and, as a result, discovered that by blending a predetermined amount of inorganic filler with a resin component consisting of polycarbonate resin and acrylonitrile-butadiene-styrene resin, it is possible to achieve a good balance of rigidity, heat resistance, moldability, dimensional stability, and a good molded product appearance, thus completing the present invention.

[0011] In other words, the present invention contains, for every 100 parts by mass of a resin component consisting of 20 to 99% by mass of polycarbonate resin (A) and 1 to 80% by mass of acrylonitrile-butadiene-styrene resin (B), 0 to 10 parts by mass of an acrylic triblock copolymer (C) containing a polymer block (a) containing acrylic acid ester monomer units and a polymer block (b) containing methacrylic acid ester monomer units, and 5 to 30 parts by mass of an inorganic filler (D).Furthermore, the inorganic filler (D) is mica. The present invention provides a polycarbonate-based resin composition and a molded article containing the same, characterized by the above. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a polycarbonate-based resin composition that has a good balance of rigidity, heat resistance, moldability, dimensional stability, and a good molded product appearance, and a molded product containing the same. [Modes for carrying out the invention]

[0013] The polycarbonate resin composition and molded articles of the present invention possess not only high rigidity and heat resistance, but also excellent moldability, dimensional stability, and molded article appearance. The polycarbonate composition and molded articles of the present invention can be used in a wide range of fields and are useful for various applications such as electrical and electronic equipment components, office automation equipment, machine parts, and automotive parts, and are particularly suitable for automotive exterior material applications.

[0014] The polycarbonate resin composition according to the present invention contains a polycarbonate resin (A), an acrylonitrile-butadiene-styrene resin (B), an inorganic filler (D), and optionally an acrylic triblock copolymer (C).

[0015] The polycarbonate resin (A) used in the present invention is a polymer obtained by the phosgene method, which involves reacting various dihydroxydiaryl compounds with phosgene, or by the transesterification method, which involves reacting dihydroxydiaryl compounds with carbonate esters such as diphenyl carbonate. A typical example is 2,2-bis(4-hydroxyphenyl)propyl One example is polycarbonate resin manufactured from bisphenol A (commonly known as bisphenol A).

[0016] In addition to bisphenol A, the above dihydroxydiaryl compounds include bis(4-hydroxyphenyl)methane, 1,1-bis(4-hydroxyphenyl)ethane, 2,2-bis(4-hydroxyphenyl)butane, 2,2-bis(4-hydroxyphenyl)octane, bis(4-hydroxyphenyl)phenylmethane, 2,2-bis(4-hydroxyphenyl-3-methylphenyl)propane, 1,1-bis(4-hydroxy-3-tert-butylphenyl)propane, 2,2-bis(4-hydroxy-3-bromophenyl)propane, 2,2-bis(4-hydroxy-3,5-dibromophenyl)propane, 2,2-bis(4-hydroxy-3,5-dichlorophenyl)propane, and other bis(hydroxyaryl)alkanes, as well as 1,1-bis(4-hydroxyphenyl) Examples include bis(hydroxyaryl)cycloalkanes such as hydroxyphenyl)cyclopentane and 1,1-bis(4-hydroxyphenyl)cyclohexane, dihydroxydiaryl ethers such as 4,4′-dihydroxydiphenyl ether and 4,4′-dihydroxy-3,3′-dimethyldiphenyl ether, dihydroxydiaryl sulfides such as 4,4′-dihydroxydiphenyl sulfide, dihydroxydiaryl sulfoxides such as 4,4′-dihydroxydiphenyl sulfoxide and 4,4′-dihydroxy-3,3′-dimethyldiphenyl sulfoxide, and dihydroxydiaryl sulfones such as 4,4′-dihydroxydiphenyl sulfone and 4,4′-dihydroxy-3,3′-dimethyldiphenyl sulfone.

[0017] These are used individually or in combination of two or more, but in addition to these, piperazine, di Piperidyl hydroquinone, resorcinol, 4,4′-dihydroxydiphenyl, etc. may be used in combination.

[0018] Furthermore, the above dihydroxyaryl compound may be mixed with a trivalent or higher phenolic compound as shown below. Examples of the trivalent or higher phenol include phloroglucinol, 4,6-dimethyl-2,4,6-tri-(4-hydroxyphenyl)-heptene, 2,4,6-dimethyl-2,4,6-tri-(4-hydroxyphenyl)-heptane, 1,3,5-tri-(4-hydroxyphenyl)-benzole, 1,1,1-tri-(4-hydroxyphenyl)-ethane, and 2,2-bis-[4,4-(4,4'-dihydroxydiphenyl)-cyclohexyl]-propane.

[0019] The viscosity average molecular weight of the polycarbonate resin (A) is preferably 17,000 to 30,000 from the viewpoint of strength. By using a polycarbonate resin having such a viscosity average molecular weight, a polycarbonate-based resin composition having high impact strength can be obtained. From the viewpoints of molding processability and strength, the viscosity average molecular weight of the polycarbonate resin (A) is more preferably 19,000 to 28,000. When the viscosity average molecular weight exceeds 30,000, the processability may deteriorate. Further, when producing such a polycarbonate resin, a molecular weight regulator, a catalyst, etc. can be used as necessary.

[0020] Examples of the polymerization method of the acrylonitrile-butadiene-styrene resin (hereinafter also referred to as ABS resin) used in the present invention include polymerization methods such as emulsion polymerization, suspension polymerization, and bulk polymerization. In particular, an ABS resin obtained by a bulk polymerization method (continuous bulk polymerization method) is suitable.

[0021] The blending amount of the ABS resin (B) is preferably 1 to 80 parts by mass, more preferably 10 to 70 parts by mass, out of 100 parts by mass of the resin components composed of the polycarbonate resin (A) and the ABS resin (B). When the blending amount of the ABS resin (B) is less than 1 part by mass, the molding processability may be insufficient. When the blending amount of the ABS resin (B) exceeds 80 parts by mass, the heat resistance may decrease, which is not preferable.

[0022] The acrylic triblock copolymer (C) used in the present invention is composed of a polymer block (a) containing acrylate monomer units and a polymer block (b) containing methacrylate monomer units.

[0023] The content of the acrylate monomer units contained in the polymer block (a) is preferably 60% by mass or more and 100% by mass or less (i.e., the main component), more preferably 70% by mass or more and 100% by mass or less, based on 100% by mass of the polymer block (a). Examples of the acrylate monomer units in the polymer block (a) include structural units derived from monomers such as methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, isobutyl acrylate, n-octyl acrylate, dodecyl acrylate, 2-ethylhexyl acrylate, stearyl acrylate, phenyl acrylate, and dimethylaminoethyl acrylate. One or more of these are used.

[0024] This polymer block (a) is obtained by the polymerization reaction of the above monomers. The weight-average molecular weight of the polymer block (a) is desirably 6,000 or more and 1,000,000 or less, more desirably 10,000 or more and 800,000 or less, and particularly desirably 15,000 or more and 500,000 or less. When the weight-average molecular weight of the polymer block (a) is within the above range, it is desirable from the viewpoint of obtaining an acrylic triblock copolymer (C) excellent in impact resistance and fluidity.

[0025] In addition, the polymer block (a) may contain other structural units as long as the desired effects are not impaired. Examples of the other structural units include other monomers such as glycidyl acrylate, allyl acrylate, acrylonitrile, methacrylonitrile, and olefins.

[0026] The content of methacrylic acid ester monomer units in polymer block (b) is preferably 60% to 100% by mass (i.e., the main component) and more preferably 70% to 100% by mass based on 100% by mass of polymer block (b). Examples of methacrylic acid ester monomer units in polymer block (b) include constituent units derived from monomers such as methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate, isobutyl (meth)acrylate, n-octyl (meth)acrylate, dodecyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, stearyl (meth)acrylate, phenyl (meth)acrylate, and dimethylaminoethyl (meth)acrylate, and one or more of these are used.

[0027] This polymer block (b) is obtained by the polymerization reaction of the above monomers, and the weight-average molecular weight of polymer block (b) is preferably 1,000 to 1,000,000, more preferably 2,000 to 750,000, and particularly preferably 3,000 to 500,000. It is desirable that the weight-average molecular weight of polymer block (b) be within the above range from the viewpoint of obtaining an acrylic triblock copolymer (C) with excellent dispersibility in the matrix resin.

[0028] Furthermore, polymer block (b) may contain other constituent units in addition to those derived from methacrylic acid ester, as long as the desired effect is not impaired. Examples of other constituent units include other monomers such as acrylic acid esters, methacrylic acid, acrylic acid, aromatic vinyl compounds, acrylonitrile, methacrylonitrile, and olefins.

[0029] In the present invention, it is preferable to use a triblock structure with a (b)-(a)-(b) structure as the acrylic triblock copolymer, in which one end of polymer block (b) is bonded to each of the ends of polymer block (a). By using the above (b)-(a)-(b) triblock structure, it is possible to improve the moldability while maintaining the high impact strength of the polycarbonate resin composition.

[0030] The following methods can be used to produce the acrylic triblock copolymer. Specifically, one method is to perform living polymerization on the monomers constituting each block. Examples of such living polymerization methods include anionic polymerization using an organic alkali metal compound as a polymerization initiator in the presence of mineral salts such as alkali metal or alkaline earth metal salts, anionic polymerization using an organic alkali metal compound as a polymerization initiator in the presence of an organoaluminum compound, polymerization using an organic rare earth metal complex as a polymerization initiator, and radical polymerization using an α-halogenated ester compound as an initiator in the presence of a copper compound. Another method is to polymerize the monomers constituting each block using a polyvalent radical polymerization initiator or a polyvalent radical chain transfer agent to produce a mixture containing the acrylic triblock copolymer of the present invention. Among these methods, the method of anionic polymerization using an organic alkali metal compound as a polymerization initiator in the presence of an organoaluminum compound is preferred because it yields a block copolymer with high purity and does not contain oligomers that reduce the impact strength and heat resistance of the polycarbonate resin composition of the present invention, i.e., high molecular weight substances that reduce fluidity.

[0031] The weight-average molecular weight of the acrylic triblock copolymer (C) in the present invention is impact resistance From the perspective of improving liquidity and diversification, it is desirable for the number to be between 1,000 and 1,000,000, and even more desirable for it to be between 2,000 and 500,000.

[0032] In the present invention, the acrylic triblock copolymer (C) is preferably a triblock copolymer comprising a polymer block with butyl polyacrylate as the monomer unit and a polymer block with methyl polymethacrylate as the monomer unit.

[0033] Furthermore, the acrylic triblock copolymer (C) may be used alone or in combination of two or more types. When using two or more types in combination, block copolymers with different molecular weights or block copolymers with different content of polymer blocks containing acrylic acid ester monomers (a) and polymer blocks containing monomer units derived from methacrylic acid esters (b) may be used.

[0034] Furthermore, commercially available acrylic triblock copolymers (C) may be used, including "LA2149e (product name)", "LA2250 (product name)", "LA4285 (product name)", "LA1114 (product name)", and "LA2140 (product name)" manufactured by Kuraray Co., Ltd.

[0035] The amount of acrylic triblock copolymer (C) is preferably 0 to 10 parts by mass, and more preferably 0.5 to 10 parts by mass, per 100 parts by mass of the total of polycarbonate resin (A) and ABS resin (B). If the amount of acrylic triblock copolymer (C) is less than 10 parts by mass, it is undesirable because it may reduce rigidity and heat resistance.

[0036] Examples of inorganic fillers (D) used in the present invention include silicate compounds such as talc, mica, wollastonite, kaolin, and montmorillonite, and titanate compounds such as calcium carbonate, sepiolite, synthetic smectite, zonolite, and potassium titanate whiskers. Among these, mica and wollastonite are preferred from the viewpoint of the appearance of the molded product and the coefficient of linear expansion, with mica being particularly preferred. These may be used individually or mixed in combination of two or more types.

[0037] The average particle size of the inorganic filler (D) is preferably 0.1 to 30 μm, more preferably 0.2 to 28 μm, and even more preferably 0.3 to 25 μm. If the average particle size is less than 0.1 μm, the rigidity and heat resistance may be insufficient, and if it exceeds 30 μm, the appearance of the molded product may deteriorate.

[0038] The aspect ratio of the inorganic filler (D) is preferably 5 or greater. If the aspect ratio is less than 5, the rigidity and heat resistance may be insufficient.

[0039] The inorganic filler (D) content of the polycarbonate resin composition of the present invention is 5 to 30 parts by mass, preferably 7 to 25 parts by mass, and more preferably 10 to 20 parts by mass, based on 100 parts by mass of the total of polycarbonate resin (A) and ABS resin (B). If the inorganic filler (D) content is less than 5 parts by mass, the rigidity, heat resistance, and dimensional stability are insufficient, and if it exceeds 30 parts by mass, problems arise with deterioration of the appearance of the molded product, which is undesirable.

[0040] Furthermore, the polycarbonate resin composition according to the embodiment may contain, to the extent that it does not impair the effects of the present invention, for example, antioxidants (e.g., 2,4,8,10-tetra-t-butyl-6-[3-(3-methyl-4-hydroxy-5-t-butylphenyl)propoxy]dibenzo[d,f][1,3,2]dioxaphosfepine, Sumirizer GP manufactured by Sumitomo Chemical Co., Ltd. ("Sumirizer" is a registered trademark)), mold release agents (e.g., fatty acid ester: glycerin monostearate, Rikemar S-100A manufactured by Riken Vitamin Co., Ltd.), heat stabilizers, colorants, softeners, etc. Various additives such as conditioning agents, antistatic agents, and impact modifiers, as well as polymers other than aromatic polycarbonate resin (A), ABS resin (B), and acrylic triblock copolymer (C), may be appropriately blended.

[0041] The polycarbonate resin composition according to the present invention can be manufactured by mixing a polycarbonate resin (A), an ABS resin (B), an acrylic triblock copolymer (C), and an inorganic filler (D), and optionally mixing in various additives and / or other polymers. The manufacturing method is not particularly limited as long as the polycarbonate resin composition targeted by the present invention can be obtained, and the type and amount of each component can be adjusted as appropriate. The method of mixing the components is also not particularly limited, and examples include mixing using known mixers such as tumblers and ribbon blenders, or melt-kneading using an extruder. By these methods, pellets of the polycarbonate resin composition can be easily obtained.

[0042] The molded article according to the present invention can be obtained by molding the above-mentioned polycarbonate-based resin composition.

[0043] As long as the molded article intended by the present invention can be obtained, the method of manufacturing the molded article is not particularly limited, and examples include methods of molding a polycarbonate resin composition by known injection molding methods, compression molding methods, etc.

[0044] The molded articles according to the present invention can be used in a wide range of fields and are useful for various applications such as electrical and electronic equipment components, office automation equipment, machine parts, and automotive parts, and are particularly suitable for automotive exterior material applications.

[0045] As described above, embodiments have been explained as examples of the present invention. However, the technology in the present invention is not limited thereto and can be applied to embodiments that are modified, replaced, added, or omitted as appropriate. [Examples]

[0046] The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. Unless otherwise specified, "parts" and "%" are based on mass.

[0047] The following ingredients were used:

[0048] 1. Polycarbonate resin (A) "SD Polycarbonate (registered trademark) 200-20" manufactured by Sumika Polycarbonate Co., Ltd. (Polycarbonate resin synthesized from bisphenol A and carbonyl chloride, viscosity-average molecular weight: 19100, hereinafter abbreviated as "PC")

[0049] 2.ABS resin (B) "Suntac AT05 (product name)" manufactured by Japan A&L Co., Ltd. (Hereafter abbreviated as "ABS")

[0050] 3. An acrylic triblock copolymer (C) composed of a polymer block (a) containing acrylic acid ester monomer units and a polymer block containing methacrylic acid ester monomer units. Kuraray Co., Ltd.'s "Clarity LA2140 (product name)" (Hereafter abbreviated as "MAM")

[0051] 4.Inorganic filler (D) 4-1. "AB-25S (product name)" manufactured by Yamaguchi Mica Co., Ltd. (Average particle size: 24 μm, aspect ratio: 80, hereinafter abbreviated as "mica") 4-2. IMERYS Wollastonite "NYGLOS 4W (product name)" (Average particle size: 7 μm, aspect ratio: 9, hereinafter abbreviated as "Wollastonite")

[0052] (Examples 1-10 and Comparative Examples 1-5) The various compounding components mentioned above were added together to a tumbler in the mixing ratios shown in Tables 1 to 3, and after dry mixing for 10 minutes, the mixture was kneaded at a melting temperature of 260°C using a twin-screw extruder (TEM-37SS manufactured by Shibaura Machinery Co., Ltd.) to obtain resin composition pellets. The resin composition contains 0.2 parts by mass of SumiLizer GP as a phosphorus-based antioxidant and 0.1 parts by mass of S-100A as a release agent per 100 parts by mass of the resin component.

[0053] (Evaluation of rigidity) The pellets of the various resin compositions obtained above were dried at 100°C for 4 hours. Then, test specimens were prepared using an injection molding machine (FANUC ROBOSHOT S2000i100B) at a set temperature of 250°C in accordance with the ISO test method, and the flexural modulus of the obtained test specimens was measured in accordance with ISO 178. A flexural modulus of 2000 MPa or higher was considered acceptable.

[0054] (Evaluation of heat resistance) After drying the pellets of the various resin compositions obtained above at 100°C for 4 hours, test specimens were prepared in accordance with the ISO test method using an injection molding machine (FANUC ROBOSHOT S2000i100B) at a set temperature of 250°C. The deflection temperature at 1.8 MPa was measured using the obtained test specimens in accordance with ISO 75-2Af. A deflection temperature of 90°C or higher was considered acceptable.

[0055] (Evaluation of linear thermal expansion coefficient) The pellets of the various resin compositions obtained above were dried at 100°C for 4 hours. Then, using an injection molding machine (FANUC ROBOSHOT S2000i100B), flat plates (150 mm × 90 mm × 2 mm thickness) were produced at a set temperature of 260°C, and these were cut into 10 mm × 5 mm × 2 mm thickness test specimens. Using the obtained test specimens, the average linear expansion coefficient was measured in two directions (MD direction / TD direction) at a measurement temperature of -40 to 90°C in accordance with JIS K 7197. The linear expansion coefficient was 6.2 × 10⁻⁶. -5 ℃ -1 The following were deemed acceptable.

[0056] (Evaluation of the appearance of molded products) The pellets of the various resin compositions obtained above were dried at 100°C for 4 hours. Then, flat plates (150 mm × 90 mm × 2 mm thickness) were manufactured using an injection molding machine (FANUC ROBOSHOT S2000i100B) at a set temperature of 260°C, and the surface roughness (arithmetic mean roughness) Ra was measured in accordance with ISO 25178-6. An Ra of 0.5 μm or less was considered acceptable.

[0057] (Evaluation of moldability) The pellets of the various resin compositions obtained above were dried at 100°C for 4 hours. Then, using an injection molding machine (FANUC ROBOSHOT S2000i100B) at a set temperature of 260°C, the flow length at a thickness of 1 mm was measured using an Archimedes spiral flow mold. A flow length of 110 mm or more was considered acceptable.

[0058] [Table 1]

[0059] [Table 2]

[0060] [Table 3]

[0061] As shown in Tables 1 and 2, when the polycarbonate resin composition satisfied all the constituent requirements of the present invention (Examples 1 to 10), it showed good results across all evaluation items.

[0062] On the other hand, as shown in Table 3, in cases where the polycarbonate resin composition did not satisfy the constituent requirements of the present invention (Comparative Examples 1 to 5), all cases had some kind of drawback.

[0063] Comparative Example 1 had a load deflection temperature of less than 90°C because the amount of ABS resin blended with the polycarbonate resin was higher than the specified amount, resulting in inferior heat resistance.

[0064] Comparative Example 2, which did not contain ABS resin, exhibited poor fluidity.

[0065] Comparative Example 3 showed inferior rigidity and heat resistance when the amount of acrylic triblock copolymer was greater than the specified amount.

[0066] Comparative Example 4 showed a lower coefficient of linear expansion when the amount of inorganic filler was less than the specified amount.

[0067] Comparative Example 5 showed that when the amount of inorganic filler was greater than the specified amount, the appearance of the molded product was inferior. [Industrial applicability]

[0068] The polycarbonate composition and molded articles of the present invention possess not only high rigidity and heat resistance, but also excellent moldability, dimensional stability, and molded article appearance. The polycarbonate composition and molded articles of the present invention can be used in a wide range of fields and are useful for various applications such as electrical and electronic equipment components, office automation equipment, machine parts, and automotive parts, and are particularly suitable for automotive exterior material applications.

Claims

1. The resin component comprises 100 parts by mass of a resin component consisting of 20 to 99% by mass of polycarbonate resin (A) and 1 to 80% by mass of acrylonitrile-butadiene-styrene resin (B), and contains 0 to 10 parts by mass of an acrylic triblock copolymer (C) containing a polymer block (a) containing acrylic acid ester monomer units and a polymer block (b) containing methacrylic acid ester monomer units, and 5 to 30 parts by mass of an inorganic filler (D). A polycarbonate-based resin composition characterized in that the inorganic filler (D) is mica.

2. The polycarbonate resin composition according to claim 1, characterized in that it does not contain a polyester resin.

3. The polycarbonate resin composition according to claim 1 or 2, wherein the acrylic triblock copolymer (C) is a triblock copolymer in which one end of the polymer block (b) is bonded to each of the ends of the polymer block (a).

4. The polycarbonate resin composition according to claim 1 or 2, wherein the average particle size of the inorganic filler (D) is 0.1 to 30 μm and the aspect ratio is 5 or more.

5. A molded article comprising the polycarbonate resin composition described in claim 1.

6. The molded article according to claim 5, wherein the molded article is an automobile exterior part.

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