TWI453251B - Polycarbonate composition and applications thereof - Google Patents

Description

Polycarbonate composition and its application

The present invention relates to a polycarbonate composition and application thereof, and more particularly to a polycarbonate composition suitable for use in electronics, automotive and optoelectronic components, the information industry, and the biotechnology industry, and a polycarbonate composition. A thin component made of matter.

In recent years, polycarbonate resin (Polycarbonate Resin) has been widely used in the optoelectronic industry, biotechnology industry or information electronics industry due to its impact resistance, light weight per unit volume, easy processing, and strong insulation. field.

When the product made of the polycarbonate resin (such as a computer case, a mobile phone case, etc.) is used with a heating element (such as a motherboard or a circuit board), when the heating element is improperly operated or damaged, the instantaneous temperature is too high. Therefore, the polycarbonate resin cannot withstand the temperature and is easy to burn. Therefore, the flame retardancy requirement of the polycarbonate resin needs to be limited. At present, governments have established clear flame retardancy requirements for electronics and electrical appliances.

In order to enhance the flame retardancy of the polycarbonate resin, a commonly used method is to add a halogen-based flame retardant or a phosphorus-based flame retardant to improve the fire safety of various products. However, although the halogen-based flame retardant can be ignited, it is corrosive to the mold in the processing process, and it causes yellowing of the polycarbonate resin, resulting in poor thermal stability of the polycarbonate resin. After being subjected to high temperature, it will be cleaved to produce toxic substances such as dioxin or benzofuran, which may endanger human health and pollute the environment. As for the phosphorus-based flame retardant, although it does not generate toxic fumes, it will be free after high temperature, and will affect the physical properties of the polycarbonate resin, resulting in embrittlement of the polycarbonate resin, poor impact resistance and moldability. Good and other shortcomings. Therefore, although the prior art can improve the flame resistance of the polycarbonate resin, it also affects the original good physical properties of the polycarbonate resin.

In addition, the current design of various electronic and electrical appliances has a tendency to be light and thin, and when polycarbonate is applied to a thin product, it is necessary to have good fluidity, so that it can be formed in a processing process of injection molding. Further, the thin product is not only more flammable due to the limitation of the thickness condition but also has a problem of poor flame retardancy, and is easily broken and has a problem of impact resistance.

As can be seen from the above, it is an urgent task to develop a physical activity that can comply with various environmental regulations and effectively improve the flame retardant properties and processing fluidity of polycarbonate resins while maintaining the original physical properties (such as impact resistance). The needs of the industry.

Accordingly, a first object of the present invention is to provide a polycarbonate composition which has improved flame retardancy, process fluidity and good impact resistance.

Thus, the polycarbonate composition of the present invention comprises 100 parts by weight of the polycarbonate (A), 1 to 15 parts by weight of the phosphate compound (B), 1 to 15 parts by weight of the phosphazene compound (C), 0.1 to 5 Parts by weight of the polyfluororesin (D), 0.5 to 10 parts by weight of the rubber graft polymer (E), and 1 to 10 parts by weight of the ethylene-carbon monoxide-vinyl acetate terpolymer (F).

A second object of the present invention is to provide a thin component having flame retardancy.

Thus, the thin component of the present invention is produced using a polycarbonate composition as described above.

The effect of the present invention is that the present invention is made by adding a component capable of improving the flame retardant effect and by adjusting the amount of the rubber graft polymer (E) and the ethylene-carbon monoxide-vinyl acetate terpolymer (F). The polycarbonate composition has better impact resistance, process fluidity and flame retardancy, and is less flammable in use.

The polycarbonate composition of the present invention comprises a polycarbonate (A), a phosphate compound (B), a phosphazene compound (C), a polyfluororesin (D), a rubber graft polymer (E), and an ethylene-carbon monoxide-acetic acid. a terpolymer of vinyl ester (F).

The following is a detailed description of each component:

[Polycarbonate (A)]

The method for synthesizing the polycarbonate (A) is not particularly limited, and general methods include a phosgene method, a transesterification method, a ring-opening polymerization method, and a carbon dioxide polymerization method. Wherein, the phosgene method is carried out by using an amine as a catalyst for a dihydroxy aryl compound dissolved in an alkali solution and a phosgene dissolved in a solvent such as dichloromethane in a homogeneous system or a heterogeneous system. Polymerization. The transesterification method is a transesterification reaction of a dihydroxyaryl compound with a carbonate compound such as diphenyl carbonate or dimethyl carbonate in a molten state.

Preferably, the synthesis method is a transesterification reaction of a dihydroxyaryl compound and a carbonate compound in a molten state.

The type of the polycarbonate (A) is not particularly limited. Preferably, the polycarbonate (A) is optionally obtained by transesterification of a dihydroxy aryl compound with a carbonate compound.

Preferably, the dihydroxy aryl compound includes, but is not limited to, 2,2-bis(4-hydroxyphenyl)propane, referred to as bisphenol A. Halogenated bisphenol, hydroquinone, bis(4-hydroxyphenyl)methane, 1,1-bis(4-hydroxyphenyl)cyclohexane Alkyl [1,1-bis(4-hydroxyphenyl)cyclohexane], 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane [2,2-bis(3,5-dimethyl-4) -hydroxyphenyl)propane], bis(4-hydroxyphenyl)sulfide, bis(4-hydroxyphenyl)sulfone, bis(4-hydroxybenzene) Bis (4-hydroxyphenyl)sulfoxide, bis(4-hydroxyphenyl)ketone, bis(4-hydroxyphenyl)ether And 2,2-bis(3,5-dibromo-4-hydroxyphenyl)propane or a combination thereof.

Preferably, the dihydroxyaryl compound may be a homopolymer of the above compound, a copolymer of the above compound or a combination thereof.

More preferably, the dihydroxyaryl compound is 2,2-bis(4-hydroxyphenyl)propane.

Preferably, the carbonate-based compound includes, but is not limited to, diphenyl carbonate, dimethyl carbonate, diethyl carbonate, or a combination thereof.

Preferably, the terminal group structure of the polycarbonate (A) is not particularly limited. The terminal group includes, but is not limited to, a hydroxyl group, an aromatic hydrocarbon carbonate, an alkyl carbonate, and the like. The polycarbonate (A) used in the present invention contains one or more terminal groups of a hydroxyl group. The hydroxyl group of the terminal group of the polycarbonate (A) is derived from a dihydroxyaryl compound.

In order to obtain a thin component during the subsequent molding, the melt flow coefficient of the polycarbonate (A) needs to be appropriately adjusted. Preferably, the polycarbonate (A) has a melt flow coefficient ranging from 15 g/10 min. to 25 g/10 min. More preferably, the polycarbonate (A) has a melt flow coefficient ranging from 15 g/10 min. to 22 g/10 min. When the melt flow coefficient of the polycarbonate (A) is more than 25 g/10 min., although a thin component can be obtained, the molded article may be fragile due to insufficient strength in subsequent processing; When the melt flow coefficient of the ester (A) is less than 15 g/10 min., the entire mold is not easily filled due to poor fluidity, and only thicker members can be produced under the same conditions.

Preferably, the polycarbonate (A) has a weight average molecular weight ranging from 20,000 to 24,000. More preferably, the polycarbonate (A) has a weight average molecular weight ranging from 22,000 to 24,000.

In one embodiment of the present invention, the polycarbonate (A) used is obtained by transesterification of bisphenol A and diphenyl carbonate, and each of them is a polycarbonate having a melt flow coefficient of 15 (A). This article is abbreviated as PC1; polycarbonate (A) with a melt flow coefficient (MI) of 22, referred to herein as PC2.

[Phosphate compound (B)]

The phosphate compound (B) exhibits a glassy melt when exposed to high temperatures, and can cover the surface of the combustion product to prevent the approach of oxygen and prevent the release of flammable volatile products, and protect against flammable polymer materials. combustion.

Preferably, the phosphate compound (B) is represented by the following formula (I), and may be used alone or in combination of two or more.

^{Wherein, R 1, R 12, R} 14 and R ¹⁵ is independently C ₆ ~ C ₂₀ aromatic group of the substituted or via C ₁ ~ C ₈ alkyl aromatic group of C ₆ ~ C _20; R ¹³ represents a C _a C ₆ -C ₂₀ extended aromatic derivative substituted with ₆ to C ₃₀ or a C ₁ -C ₈ alkyl group; m represents a number average degree of polymerization of 0 to 3.

More preferably, R ¹ , R ¹² , R ¹⁴ and R ^{15 are} independently represented by a phenyl group or a phenyl group substituted by a C ₁ -C ₄ alkyl group.

Preferably, the aryl group includes, but is not limited to, resorcinol, hydroquinone, bisphenol A, or a combination thereof.

Preferably, the aryl derivative includes, but is not limited to, a resorcinol derivative, a hydroquinone derivative, a bisphenol A derivative, or a combination thereof.

Preferably, the phosphate compound (B) includes, but is not limited to, tri(alkylphenyl)phosphate, di(alkylphenyl)monophenylphosphate ], diphenylmono (alkylphenyl) phosphate, triphenylphosphate or a combination thereof.

In one embodiment of the present invention, the phosphate compound (B) used is bisphenol A bis (diphenyl phosphate), referred to herein as BDP].

Preferably, the content of the phosphate compound (B) is in the range of 1 to 15 parts by weight based on 100 parts by weight of the polycarbonate (A). More preferably, the content of the phosphate compound is from 3 to 10 parts by weight.

If the content of the phosphate compound (B) is less than 1 part by weight, the flame retardancy of the polycarbonate composition may be deteriorated; if the content of the phosphate compound (B) exceeds 15 parts by weight, the polycarbonate The impact resistance of the composition is lowered.

[phosphazene compound (C)]

The phosphazene compound (C) can promote the dehydration reaction of the polymer substance at a high temperature to lower the combustion temperature; and the phosphoric acid decomposed by the heat can promote the carbonization of the organic substance to form a non-combustible coke layer to isolate the heat source and the combustible material directly. Contact, increase the flame retardant effect.

Preferably, the phosphazene compound (C) is represented by the following formula (II):

Wherein X is represented by -N=P(OR ²² ) ₃ or -N=P(O)OR ²³ ; Y represents -P(OR ²⁴ ) ₄ or -P(O)(OR ²⁵ ) ₂ ; R ² , R ²¹ , R ²² , R ²³ , R ²⁴ and R ²⁵ are the same or different and each represents a phenyl group, a phenyl group substituted with a C ₁ -C ₆ alkyl group, a phenyl group substituted with an alkenyl group; n represents 3 to An integer of 1000.

Preferably, the alkenyl group is an allyl group.

Preferably, the phosphazene compound (C) can be produced by substituting a phenoxy group or an epoxy group with dichlorophosphazene.

The phosphazene compound (C) includes, but is not limited to, a commercial product of Otsuka Chemical Co. Ltd., such as phenoxyphosphazene oligomer, degree of polymerization ≧3, trade name SPS-100; Fushimi A product of Fushimi Pharmaceutical Co. Ltd., such as the trade name FP-110.

Preferably, the content of the phosphazene compound (C) is in the range of 1 to 15 parts by weight based on 100 parts by weight of the polycarbonate (A). More preferably, the content of the phosphazene compound (C) is in the range of 4 to 10 parts by weight.

Preferably, the content of the phosphorus atom in the range of from 13% by weight to 15% by weight based on the total weight of the phosphazene compound (C).

In one embodiment of the present invention, the phosphazene compound (C) is FP-110.

If the content of the phosphazene compound (C) is less than 1 part by weight, the flame retardancy of the polycarbonate composition may be deteriorated; if the content of the phosphazene compound (C) exceeds 15 parts by weight, the polycarbonate may be used. The impact resistance of the ester composition is lowered.

[Polyfluororesin (D)]

The polyfluororesin (D) has characteristics such as weather resistance, solvent resistance, and high temperature resistance. Moreover, when the polyfluororesin (D) is subjected to high-temperature combustion, it may have characteristics of preventing the polymer material from igniting other flammable materials due to high-temperature heat fusion.

Preferably, the polyfluororesin (D) comprises, but is not limited to, polytetrafluoroethylene (PTFE), ethylene-propylene fluoride resin (copolymer made of tetrafluoroethylene and hexafluoropropylene, and emit ethylene Propylene (FEP), polyfluoroalkoxy resin (copolymer made of tetrafluoroethylene and perfluoroalkyl vinyl ether, polyfluoroalkoxy, PFA for short) or a combination of these.

In one embodiment of the present invention, the polyfluororesin (D) used is polytetrafluoroethylene.

Preferably, the content of the polyfluororesin (D) is in the range of 0.1 to 5 parts by weight based on 100 parts by weight of the polycarbonate (A). More preferably, the content of the polyfluororesin is in the range of 1 to 2 parts by weight.

If the content of the polyfluororesin (D) is less than 0.1 parts by weight, the drip resistance of the polycarbonate composition may be deteriorated; and if the content of the polyfluororesin (D) exceeds 5 parts by weight, the polycarbonate may be used. The impact resistance of the ester composition is lowered.

[Rubber amine branch polymer (E)]

The kind of the rubber graft polymer (E) is not particularly limited and can be generally used. The rubber graft polymer (E) is a core-shell type graft polymer which is made of ruthenium rubber as a core and a double bond-containing compound as a shell, which is prepared by making the double bond compound and ruthenium rubber A polymerization reaction is carried out to graft the double bond-containing compound onto the ruthenium rubber.

Preferably, the ruthenium rubber is produced by polymerization of a cyclodecane. Preferably, the cyclodecane oxide includes, but is not limited to, hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, ten Dodecamethylcyclohexasiloxane, trimethyltriphenylcyclotrisiloxane, tetramethyltetraphenylcycloteltrosiloxane, octaphenylcyclotetraoxane [octaphenylcyclotetrasiloxane] and the like.

Preferably, the double bond-containing compound includes, but is not limited to, (a) a styrene-based compound: styrene, α-methylstyrene, halogen-substituted styrene, hydrocarbyl-substituted styrene (b) acrylonitrile-based compound: methacrylonitrile; (c) (meth) acrylate compound: C ₁ - C ₈ alkyl methacrylate and C ₁ - C the alkyl acrylate _8; (d) other compounds: maleic anhydride (maleic anhydride), by phenyl - N - acyl-substituted maleic imide the (phenyl N-substituted maleimide); or (e One of the above combinations.

Preferably, the (meth) acrylate compound is an ester formed by esterification of a C ₁ - C ₈ monohydril alcohol with (meth)acrylic acid.

Preferably, the (meth) acrylate compound includes, but is not limited to, methyl methacrylate, ethyl methacrylate, propyl methacrylate, and the like.

More preferably, the (meth) acrylate compound is methyl methacrylate.

In one embodiment of the present invention, the rubber graft polymer (E) used is a product of Kaneka Corporation, trade name is MR-01, and is abbreviated herein as MR-01.

The rubber graft polymer (E) can be produced by a conventionally used method such as an emulsion polymerization method, a melt polymerization method or the like.

Preferably, the content of the ruthenium rubber ranges from 30 wt% to 90 wt%, based on the total weight of the rubber graft polymer (E). If the ruthenium rubber content is less than 30% by weight, the flame retardancy of the polycarbonate composition may be deteriorated; if the ruthenium rubber content exceeds 90% by weight, the impact resistance of the polycarbonate composition may be lowered.

Preferably, the content of germanium atoms in the range of 60 wt% to 70 wt% is based on the total weight of the rubber graft polymer (E).

If the content of the ruthenium atom is less than 60% by weight, the flame retardancy of the polycarbonate composition may be deteriorated; if the content of ruthenium atoms exceeds 70% by weight, the impact resistance of the polycarbonate composition may be lowered.

Preferably, the rubber graft polymer (E) is contained in an amount ranging from 0.5 to 10 parts by weight based on 100 parts by weight of the polycarbonate (A). More preferably, the rubber graft polymer (E) is contained in an amount ranging from 2 to 6 parts by weight.

If the content of the rubber graft polymer (E) is less than 0.5 parts by weight, the impact strength effect and flame retardancy of the polycarbonate composition may be deteriorated; if the content of the rubber graft polymer (E) When it exceeds 10 parts by weight, the polycarbonate composition may affect the mechanical properties such as fluidity, tensile strength, and bending coefficient of the product.

[Ethylene-carbon monoxide-vinyl acetate terpolymer (F)]

The ethylene-carbon monoxide-vinyl acetate terpolymer (F) has better thermal stability and has a ketone carbonyl group in the copolymer to improve compatibility with the polycarbonate (A). Further, the ethylene-carbon monoxide-vinyl acetate terpolymer (F) enhances the toughness of the polycarbonate composition and thereby imparts better impact resistance to the polycarbonate composition.

The ethylene-carbon monoxide-vinyl acetate terpolymer (F) includes, but is not limited to, Elvaloy products manufactured by DuPont, such as EP4051, HP441, HP4051, and the like.

In one embodiment of the present invention, the ethylene-carbon monoxide-vinyl acetate terpolymer (F) used is EP4051.

Preferably, the ethylene-carbon monoxide-vinyl acetate (F) terpolymer is contained in an amount ranging from 1 to 10 parts by weight based on 100 parts by weight of the polycarbonate (A). More preferably, the ethylene-carbon monoxide-vinyl acetate (F) terpolymer is contained in an amount ranging from 2 to 8 parts by weight.

In order to obtain a thin component during subsequent molding, the melt flow coefficient of the polycarbonate composition needs to be appropriately adjusted. Preferably, the polycarbonate composition has a melt flow coefficient ranging from 16 g/10 min. to 26 g/10 min. When the melt flow coefficient of the polycarbonate composition is more than 26 g/10 min., although a thin component can be obtained, the molded article may be fragile due to insufficient strength in subsequent processing; the polycarbonate When the melt flow coefficient of the composition is less than 16 g/10 min., the entire mold is not easily filled due to poor fluidity, and only thicker components can be produced under the same conditions.

The polycarbonate composition may optionally further be added with additives, including but not limited to eucalyptus oil, inorganic additives, heat stabilizers, antioxidants, light stabilizers, flame retardants, without departing from the effects of the present invention. , lubricants, pigments and dyes. The inorganic additive is such as glass fiber, carbon fiber, talc, ceria, mica, alumina, etc. or a combination thereof.

The method for producing the polycarbonate composition of the present invention is not particularly limited. Preferably, the preparation method is prepared by mixing with a high speed mixer, a twin screw extruder, a single screw extruder or other conventional mixer.

Preferably, the polycarbonate (A), the phosphazene compound (C), the polyfluororesin (D), the rubber graft polymer (E), and the ethylene-carbon monoxide-vinyl acetate terpolymer (F) After mixing uniformly by a high-speed mixer, the main feed port of the twin-screw extruder is fed, and the phosphate compound (B) is fed from the side to be mixed to obtain the polycarbonate composition of the present invention. .

The polycarbonate composition of the present invention is suitable for the production of thin components of products for the automotive parts, photovoltaic industry, biotechnology industry or information electronics industry. The thin component can be an electronic and power tool component, an outer casing of the information industry and communication equipment, and an outer casing of other products (such as home appliances).

At present, the polycarbonate composition is widely studied by the automobile industry, mainly because it has good light transmittance and temperature resistance, and can be used as a car headlight, and has better impact resistance, and can be used as a bumper for a car. Lightweight can be used as a car window. Further, the polycarbonate resin composition of the present invention is easier to process than the glass material, and the energy emission can be reduced at the processing stage.

The present invention will be further illustrated by the following examples, but it should be understood that this embodiment is intended to be illustrative only and not to be construed as limiting.

<Examples> [Preparation of carbonate resin composition] <Examples 1 to 8 and Comparative Examples 1 to 5>

According to the types and amounts of the components in Table 1, the components were mixed in a high-speed mixer (manufactured by MIXACO), and then placed in a main hopper of a two-axis extruder (manufactured by W&P, injection molding temperature: 270 ° C), BDP side A polycarbonate composition can be obtained by feeding the mixture into a biaxial extruder mixer chain and forming granules.

The obtained polycarbonate composition was formed into a thin element by an injection molding machine (manufactured by JSW, injection molding temperature: 290 ° C), and each test item was evaluated. The results are shown in Table 1.

【Test items】 1. Melt flow index (MI)

Tested according to ASTM D-1238 method, the test temperature is 300 ° C, and the load is 1.2 kg. The unit is gram/10 minutes (g/10min).

2. IZOD impact resistance

The impact resistance (1/8") of each sample was measured according to ASTM D256. Generally, the impact resistance needs to be above 48 to meet the needs of the industry.

3. UL flame retardancy

The test piece was produced in accordance with the standard method of UL-94, and the flame retardancy was measured using a test sample having a thickness of 0.8 mm. There are five test strips for each test sample. Each test piece is subjected to a secondary combustion test with a firing interval of 10 ± 0.5 seconds. The time from the first ignition to the extinction is t ₁ and the time from the second ignition to the extinction. For t ₂ , the total burning time (t ₁ +t ₂ ) is the total burning time, and the evaluation method is:

V0: The total burning time is ≦30 seconds and no dripping problem is generated, and it has anti-drip property.

V1: The total burning time is ≦250 seconds, and no dripping problem is generated, and it has anti-drip property.

V2: The total burning time is ≦250 seconds, and there is a problem of dripping.

It can be seen from Comparative Examples 2 to 4 in the test results of Table 1 that the addition amount of the (F) is sufficiently high (for example, up to 10 parts by weight) to enhance the impact resistance (12.23 is raised to 73.8), but the resistance is lost. Flammability (V0 fell to V1), but it can be seen from Comparative Examples 2 and 5 that increasing the amount of (C) added to improve the flame retardancy not only greatly reduces the impact resistance (73.8 to 16.1), but also hinders Flammability cannot be improved. Therefore, the characteristics of the polycarbonate composition are not controlled by a single additive, and the design of Examples 1 to 8 of the present invention not only has better flame retardancy under the control of the combination and content of (E) and (F). (V0) also has good impact resistance (49.4 ~ 80.8). Furthermore, it can be seen from Examples 5 to 8 that under the control of the combination and content of (E) and (F), compared with Comparative Examples 2 to 5, even if the amount of (C) is reduced to half, The flame retardancy is maintained above a certain level (V0) and has good impact resistance (69.6-80.8), and the melt flow coefficient of the polycarbonate composition is 16.28 g/10 min. to 24.02 g/10 min. ., indeed meet the needs of the industry.

The polycarbonate composition of the present invention is used by the polycarbonate (A), the phosphate compound (B), the phosphazene compound (C) and the polyfluororesin (D), together with the rubber graft polymer (E) And the terpolymer (F) of ethylene-carbon monoxide-acetic acid acetate and regulating the amount of these components not only exhibits excellent flame retardancy, but also maintains impact resistance above a certain level. Further, since the polycarbonate composition does not contain a halogen flame retardant such as chlorine or bromine, it does not emit a halogen-containing toxic gas, and it can comply with environmental regulations and does not cause harm to the environment and the human body.

In summary, the present invention provides a polycarbonate composition having better flame retardancy, better processing fluidity and good mechanical properties, and a thin component formed from the polycarbonate composition, and The thin component can be used as an electronic and power tool component, an outer casing of the information industry and communication equipment, and an outer casing of other products (for example, home appliances), so that the object of the present invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

Claims (15)

A polycarbonate composition comprising: 100 parts by weight of a polycarbonate (A); 1 to 15 parts by weight of a phosphate compound (B); 1 to 15 parts by weight of a phosphazene compound (C); 0.1 to 5 parts by weight Polyfluororesin (D); 0.5 to 10 parts by weight of the rubber graft polymer (E); and 1 to 10 parts by weight of the ethylene-carbon monoxide-vinyl acetate terpolymer (F). The polycarbonate composition according to claim 1, wherein the polycarbonate composition has a melt flow coefficient ranging from 16 g/10 min. to 26 g/10 min. The polycarbonate composition according to claim 1, wherein the polycarbonate (A) has a melt flow coefficient ranging from 15 g/10 min. to 22 g/10 min. The polycarbonate composition according to the first aspect of the invention, wherein the content of the phosphate compound (B) is from 3 to 10 parts by weight, based on 100 parts by weight of the polycarbonate (A), phosphorus The content of the nitrile compound (C) is 4 to 10 parts by weight, the content of the polyfluororesin (D) is 1 to 2 parts by weight, the content of the rubber graft polymer (E) is 2 to 6 parts by weight, and ethylene-carbon monoxide. The content of the vinyl acetate terpolymer (F) is 2 to 8 parts by weight. The polycarbonate composition according to claim 1, wherein the content of the ruthenium atom is 60% by weight to 70% by weight based on the total weight of the rubber graft polymer (E). The polycarbonate composition according to the above aspect of the invention, wherein the content of the phosphorus atom is from 13 wt% to 15 wt% based on the total weight of the phosphazene compound (C). The polycarbonate composition according to claim 1, wherein the polycarbonate (A) is obtained by transesterification of a dihydroxyaryl compound and a carbonate compound. According to the polycarbonate composition of claim 7, the dihydroxyaryl compound is selected from the group consisting of 2,2-bis(4-hydroxyphenyl)propane, halogenated bisphenol, hydroquinone, Bis(4-hydroxyphenyl)methane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, bis ( 4-hydroxyphenyl)sulfide, bis(4-hydroxyphenyl)fluorene, bis(4-hydroxyphenyl)hydrazine, bis(4-hydroxyphenyl)one, bis(4-hydroxyphenyl)ether, and 2,2-bis(3,5-dibromo-4-hydroxyphenyl)propane or a combination of these. The polycarbonate composition according to claim 7, wherein the carbonate compound is selected from the group consisting of diphenyl carbonate, dimethyl carbonate, diethyl carbonate or a combination thereof. . The polycarbonate composition according to claim 1, wherein the phosphate compound (B) is represented by the following formula (I): ^{Wherein, R 1, R 12, R} 14 and R ¹⁵ is independently C ₆ ~ C ₂₀ aromatic group of the substituted or via C ₁ ~ C ₈ alkyl aromatic group of C ₆ ~ C _20; R ¹³ represents a C _a C ₆ -C ₂₀ extended aromatic derivative substituted with ₆ to C ₃₀ or a C ₁ -C ₈ alkyl group; m represents a number average degree of polymerization of 0 to 3. The polycarbonate composition according to claim 1, wherein the phosphazene compound (C) is represented by the following formula (II): Wherein X is represented by -N=P(OR ²² ) ₃ or -N=P(O)OR ²³ ; Y represents -P(OR ²⁴ ) ₄ or -P(O)(OR ²⁵ ) ₂ ; R ² , R ²¹ , R ²² , R ²³ , R ²⁴ and R ²⁵ are the same or different and each represents a phenyl group, a phenyl group substituted with a C ₁ -C ₆ alkyl group, a phenyl group substituted with an alkenyl group; n represents 3 to An integer of 1000. The polycarbonate composition according to claim 1, wherein the polyfluororesin is selected from the group consisting of polytetrafluoroethylene, ethylene-propylene fluoride resin, polyfluoroalkoxy resin or a combination thereof. . The polycarbonate composition according to claim 1, wherein the rubber graft polymer (E) is obtained by polymerization of a ruthenium rubber and a double bond-containing compound. The polycarbonate composition according to claim 13, wherein the double bond-containing compound is selected from the group consisting of a styrene compound, an acrylonitrile compound, a (meth) acrylate compound, and a butylene compound. An acid anhydride, a phenyl-nitrogen-substituted maleimide or a combination of the above. A thin component prepared by using the polycarbonate composition according to any one of claims 1 to 14.