KR20230116572A - Thermoplastic resin composition and molded product using the same - Google Patents

Abstract

Provided are a thermoplastic resin composition, which contains, based on 100 parts by weight of a basic material containing: (A) 40 to 70 wt% of a polyamide resin; (B) 5 to 10 wt% of a phosphorus-based flame retardant; (C) 2 to 5 wt% of a melamine-based flame retardant; and (D) 20 to 50 wt% of glass fiber, (E) 0.5 to 3 parts by weight of zinc borate (ZnB), (F) 1 to 5 parts by weight of an ethylene-alpha-olefin copolymer and (G) 0.2 to 2 parts by weight of amino-silane, and a molded article using the same. One embodiment provides the thermoplastic resin composition with excellent flame retardancy, impact resistance, and fluidity, and the molded article using the same.

Description

Thermoplastic resin composition and molded product using the same {THERMOPLASTIC RESIN COMPOSITION AND MOLDED PRODUCT USING THE SAME}

The present invention relates to a thermoplastic resin composition and a molded article using the same.

Thermoplastic resin compositions used in automobile parts or electrical appliances have industry standards for flame retardancy, and excellent electrical insulation and flame retardancy are required. In accordance with recent environmental issues, the supply of electric vehicles is being supported by governments of each country, and accordingly, the demand for electric vehicle batteries is increasing. Although important in general electrical appliances, flame retardancy and electrical insulation in a thin film of a thermoplastic resin composition are becoming important as safety becomes an issue in automotive battery applications. In addition, in order to be used in automobile parts or electrical appliances, the above characteristics must be satisfied and excellent mechanical properties must be satisfied, for example, tensile strength and flexural modulus must not be reduced.

Polyamide resins provide excellent heat resistance and formability, so they are useful as materials for automobile parts or electrical appliances. However, polyamide resins lack flame resistance, so a flame retardant must be added to provide flame retardancy required for specific applications. Bromine-based compounds and antimony-based compounds may be used as the flame retardant, but especially bromine-based compounds may cause environmental problems when a resin composition containing them is burned, so when a bromine-based compound and an antimony-based compound are included, the use is may be limited.

Accordingly, a non-halogen flame retardant is used to improve the flame retardancy of the polyamide resin composition, but the non-halogen flame retardant must be used in a large amount compared to the halogen-based flame retardant, thereby reducing the impact resistance and fluidity of the material, resulting in a decrease in moldability. occurs. In addition, when an impact modifier is additionally added to compensate for impact resistance, flame retardancy of the thermoplastic resin composition is lowered again.

Therefore, it is necessary to develop a thermoplastic resin composition capable of solving the above problems.

One embodiment provides a thermoplastic resin composition having excellent flame retardancy, impact resistance and fluidity, and a molded article using the same.

According to one embodiment, (A) 40 to 70% by weight of a polyamide resin; (B) 5 to 10% by weight of a phosphorus-based flame retardant; (C) 2 to 5% by weight of a melamine-based flame retardant; and (D) 0.5 to 3 parts by weight of zinc borate (ZnB) based on 100 parts by weight of a base material containing 20 to 50% by weight of glass fiber; (F) 1 to 5 parts by weight of an ethylene-alpha-olefin copolymer, and (G) 0.2 to 2 parts by weight of amino-silane.

The polyamide resin (A) is polyamide 6, polyamide 66, polyamide 46, polyamide 11, polyamide 12, polyamide 610, polyamide 612, polyamide 6I, polyamide 6T, polyamide 4T, polyamide 410, polyamide 510, polyamide 1010, polyamide 1012, polyamide 10T, polyamide 1212, polyamide 12T, polyamide MXD6, or combinations thereof.

The (A) polyamide resin may include polyamide 66.

The (B) phosphorus-based flame retardant is aluminum diethyl phosphinate, triphenyl phosphate, ammonium polyphosphate, resorcinol-di (bis-2,6-dimethylphenyl) phosphate (resorcinol-di(bis-2,6-dimethylphenyl) phosphate), bisphenol A diphenyl phosphate, cyclophosphazene, diethyl phosphinate ammonium salt, or It may be any one of these combinations.

In one embodiment, the (B) phosphorus-based flame retardant may be aluminum diethyl phosphinate.

The (C) melamine-based flame retardant is melamine polyphosphate, melamine/ammonium polyphosphate, melamine phosphate, melamine pyrophosphate, or any combination thereof can be one

In one embodiment, the (C) melamine-based flame retardant may be melamine polyphosphate.

The (F) ethylene-alpha-olefin copolymer may have a weight average molecular weight of 10,000 to 500,000 g/mol.

The (F) ethylene-alpha-olefin copolymer may be an ethylene-octene copolymer.

The thermoplastic resin composition may further include at least one additive selected from an antibacterial agent, a nucleating agent, a coupling agent, a filler, a plasticizer, an impact modifier, a lubricant, a release agent, a heat stabilizer, an antioxidant, a UV stabilizer, a pigment, and a dye.

In another embodiment, a molded article manufactured from the thermoplastic resin composition is provided.

In the molded article, the sum of burning times t1 and t2 measured for a 1.5 mm thick specimen according to the UL94 standard may be less than 35 seconds.

The molded article may have a flame retardancy of V-0 or higher measured for a 1.5 mm thick specimen according to UL94 standard.

The molded product may have an Izod impact strength of 8 kgf·cm/cm or more measured for a 1/8 inch thick specimen having a notch in accordance with ASTM D256 standard.

The molded article may have a melt-flow index (MI) of 85 g/10 min or more, measured under a condition of 275° C. and a load of 2.16 kg according to ASTM D1238 standard.

A thermoplastic resin composition having excellent flame retardancy, impact resistance and fluidity and a molded article using the same can be provided.

Hereinafter, embodiments of the present invention will be described in detail. However, this is presented as an example, and the present invention is not limited thereby, and the present invention is only defined by the scope of the claims to be described later.

In this specification, unless otherwise specified, "copolymerization" means block copolymerization, random copolymerization, and graft copolymerization, and "copolymer" means block copolymer, random copolymer, and graft copolymer.

Unless otherwise specified in the present specification, the weight average molecular weight is measured by dissolving a powder sample in an appropriate solvent and using Agilent Technologies' 1200 series Gel Permeation Chromatography (GPC) (standard sample is Shodex's polystyrene). used).

The thermoplastic resin composition according to one embodiment includes (A) 40 to 70% by weight of a polyamide resin; (B) 5 to 10% by weight of a phosphorus-based flame retardant; (C) 2 to 5% by weight of a melamine-based flame retardant; and (D) 0.5 to 3 parts by weight of zinc borate (ZnB) based on 100 parts by weight of a base material containing 20 to 50% by weight of glass fiber; (F) 1 to 5 parts by weight of an ethylene-alpha-olefin copolymer, and (G) 0.2 to 2 parts by weight of amino-silane.

Hereinafter, each component included in the thermoplastic resin composition will be described in detail.

(A) polyamide resin

In one embodiment, the polyamide resin enables the thermoplastic resin composition to realize excellent fluidity and mechanical properties.

In one embodiment, various polyamide resins known in the art may be used as the polyamide resin, for example, an aromatic polyamide resin, an aliphatic polyamide resin, or a mixture thereof, and is not particularly limited.

The aromatic polyamide resin is a polyamide resin including an aromatic group in a main chain, and may be a wholly aromatic polyamide resin, a semi-aromatic polyamide resin, or a mixture thereof.

The wholly aromatic polyamide resin refers to a polymer of aromatic diamine and aromatic dicarboxylic acid, and the semi-aromatic polyamide resin includes at least one aromatic unit and at least one non-aromatic unit between amide bonds. do. For example, the semi-aromatic polyamide resin may be a polymer of an aromatic diamine and an aliphatic dicarboxylic acid, or a polymer of an aliphatic diamine and an aromatic dicarboxylic acid.

Meanwhile, the aliphatic polyamide resin refers to a polymer of aliphatic diamine and aliphatic dicarboxylic acid.

Examples of the aromatic diamine include p-xylene diamine and m-xylene diamine, but are not limited thereto. In addition, these may be used alone or in combination of two or more.

Examples of the aromatic dicarboxylic acid include, but are not limited to, phthalic acid, isophthalic acid, terephthalic acid, 2,6-naphthalenedicarboxylic acid, and (1,3-phenylenedioxy)diacetic acid. . In addition, these may be used alone or in combination of two or more.

Examples of the aliphatic diamine include, but are not limited to, ethylenediamine, trimethylenediamine, hexamethylenediamine, dodecamethylenediamine, and piperazine. In addition, these may be used alone or in combination of two or more.

Examples of the aliphatic dicarboxylic acid include adipic acid, sebacic acid, succinic acid, glutaric acid, azelaic acid, dodecanedioic acid, dimer acid, cyclohexanedicarboxylic acid, and the like, but are not limited thereto no. In addition, these may be used alone or in combination of two or more.

In one embodiment, the polyamide resin is polyamide 6, polyamide 66, polyamide 46, polyamide 11, polyamide 12, polyamide 610, polyamide 612, polyamide 6I, polyamide 6T, polyamide 4T, polyamide amide 410, polyamide 510, polyamide 1010, polyamide 1012, polyamide 10T, polyamide 1212, polyamide 12T, polyamide MXD6, or combinations thereof.

In one embodiment, the polyamide resin may include polyamide 66.

In one embodiment, the polyamide resin may be included in 40 to 70% by weight, for example, 50 to 70% by weight, for example, 50 to 60% by weight, based on 100% by weight of the base material.

When the content of the polyamide resin satisfies the above-described range, the thermoplastic resin composition and molded articles manufactured therefrom may exhibit excellent fluidity and mechanical properties due to the polyamide resin.

(B) phosphorus flame retardant

In one embodiment, the phosphorus-based flame retardant is used together with the melamine-based flame retardant to reinforce the flame retardancy of the thermoplastic resin composition to realize a high level of flame retardancy.

As the phosphorus-based flame retardant usable in one embodiment, a conventional phosphorus-based flame retardant used to reinforce flame retardancy of a thermoplastic resin composition may be used. For example, phosphate compounds, phosphonate compounds, phosphinate compounds, phosphine oxide compounds, phosphazene compounds, metal salts thereof, and the like can be used. . The phosphorus-based flame retardants may be used alone or in combination of two or more.

Specifically, the phosphorus-based flame retardant is aluminum diethyl phosphinate, triphenyl phosphate, ammonium polyphosphate, resorcinol-di (bis-2,6-dimethylphenyl) phosphate (resorcinol-di(bis-2,6-dimethylphenyl) phosphate), bisphenol A diphenyl phosphate, cyclophosphazene, diethyl phosphinate ammonium salt, or Combinations of these may be included.

In one embodiment, the phosphorus-based flame retardant may be aluminum diethyl phosphinate.

The phosphorus-based flame retardant may be included in 5 to 10% by weight, for example, 5 to 8% by weight based on 100% by weight of the base material. When the content of the phosphorus-based flame retardant satisfies the aforementioned range, the thermoplastic resin composition may have excellent flame retardancy and excellent mechanical properties and fluidity.

(C) Melamine-based flame retardant

In one embodiment, the melamine-based flame retardant is used together with the phosphorus-based flame retardant to reinforce the flame retardancy of the thermoplastic resin composition to realize a high level of flame retardancy.

As the melamine-based flame retardant that can be used in one embodiment, a conventional melamine-based flame retardant used to reinforce the flame retardancy of a thermoplastic resin composition may be used.

Specifically, the melamine-based flame retardant includes melamine polyphosphate, melamine/ammonium polyphosphate, melamine phosphate, melamine pyrophosphate, or a combination thereof can do.

In one embodiment, the melamine-based flame retardant may be melamine polyphosphate.

The melamine-based flame retardant may be included in 2 to 5% by weight, for example, 2 to 3% by weight based on 100% by weight of the base material. When the content of the melamine-based flame retardant satisfies the aforementioned range, the thermoplastic resin composition may have excellent flame retardancy and excellent mechanical properties and formability.

(D) glass fiber

In one embodiment, the glass fiber may serve to improve flame retardancy as well as improve mechanical properties such as tensile strength of the thermoplastic resin composition.

Glass fibers usable in one embodiment may be glass fibers used in conventional thermoplastic resin compositions.

The glass fiber may have a diameter of 1 to 20 μm, for example 1 to 15 μm, for example 1 to 10 μm, for example 1 to 5 μm, but is not limited thereto.

The average length of the glass fiber before processing may be 10 mm or less, for example, 1 to 8 mm, for example, 1 to 5 mm, for example, 1 to 3 mm, but is not limited thereto.

When the diameter and average length of the glass fibers are within the above ranges, mechanical properties may be excellent.

The glass fiber may be circular, elliptical, rectangular, or dumbbell-shaped with two circular cross sections connected, or a mixture of two or more types having different cross-sectional shapes, diameters, and average lengths may be used.

Meanwhile, in order to improve bonding between the glass fiber and the thermoplastic resin, the surface of the glass fiber may be surface-treated with a predetermined material, and the fluidity and impact resistance of the thermoplastic resin composition may vary depending on the type of surface treatment agent.

As the surface treatment agent, a silane-based compound, an epoxy-based compound, or a urethane-based compound may be used, and surface treatment agents that are commonly commercialized and used may be used without limitation.

In one embodiment, the glass fiber may be included in 20 to 50% by weight, for example, 20 to 40% by weight, for example, 30 to 40% by weight based on 100% by weight of the base material. When the content of the glass fiber satisfies the aforementioned range, the thermoplastic resin composition and molded products manufactured therefrom may exhibit excellent mechanical properties and flame retardancy.

(E) Zinc borate

In one embodiment, zinc borate may further improve flame retardancy of the thermoplastic resin composition.

The zinc borate is Above basic material Based on 100 parts by weight, it may be included in 0.5 to 3 parts by weight, for example, 0.5 to 2 parts by weight. Within the above range, flame retardancy of the thermoplastic resin composition and molded articles using the same may be further improved.

(F) ethylene-alpha-olefin copolymer

In one embodiment, the ethylene-alpha-olefin copolymer may impart excellent impact resistance and fluidity to the thermoplastic resin composition.

The ethylene-alpha-olefin copolymer is prepared by copolymerizing at least one ethylene and alpha-olefin monomer. The alpha-olefin monomer is not particularly limited, but non-limiting examples include propylene, 1-butene, 1-hexene, 1-octene, and the like.

In one embodiment, the ethylene-alpha-olefin copolymer may be an ethylene-octene copolymer.

The ethylene-alpha-olefin copolymer may have a weight average molecular weight of 10,000 to 500,000 g/mol, eg 30,000 to 400,000 g/mol, eg 60,000 to 300,000 g/mol.

The ethylene-alpha-olefin copolymer may be included in an amount of 1 to 5 parts by weight, for example, 1 to 3 parts by weight, based on 100 parts by weight of the base material. When the content of the ethylene-alpha-olefin copolymer satisfies the above-described range, the thermoplastic resin composition and molded articles manufactured therefrom may exhibit excellent impact resistance and fluidity.

(G) aminosilane

In one embodiment, aminosilane may impart excellent impact resistance and flame retardancy to the thermoplastic resin composition.

The above-mentioned ethylene-alpha-olefin copolymer (F) can improve the impact resistance and fluidity of the thermoplastic resin composition, but can lower the flame retardancy.

However, the thermoplastic resin composition of the present invention includes aminosilane and an ethylene-alpha-olefin copolymer together, so that flame retardancy can be improved while maintaining good physical properties such as impact resistance and flowability of the thermoplastic resin composition.

As the aminosilane usable in one embodiment, aminosilane used in conventional thermoplastic resin compositions may be used. For example, 3-aminopropyltriethoxysilane (3-aminopropyltriethoxysilane), 3-aminopropyltrimethoxysilane (3-aminopropyltrimethoxysilane), etc. may be mentioned, but is not limited to these.

The aminosilane may be included in an amount of 0.2 to 2 parts by weight, for example, 0.5 to 1.5 parts by weight, based on 100 parts by weight of the base material. When the content of the aminosilane satisfies the aforementioned range, the thermoplastic resin composition and molded articles manufactured therefrom may exhibit excellent flame retardancy.

(H) Additives

In addition to the components (A) to (G), the thermoplastic resin composition according to one embodiment is required to balance each physical property without deterioration of other physical properties or according to the final use of the thermoplastic resin composition. One or more additives may be included.

Specifically, as the additives, antibacterial agents, nucleating agents, coupling agents, fillers, plasticizers, lubricants, release agents, heat stabilizers, antioxidants, UV stabilizers, pigments, dyes, etc. may be used, and these may be used alone or in combination of two or more. .

These additives may be appropriately included within a range that does not impair the physical properties of the thermoplastic resin composition, for example, may be included in an amount of 20 parts by weight or less based on 100 parts by weight of the base material, but is not limited thereto.

Meanwhile, the thermoplastic resin composition according to one embodiment may be mixed with other resins or other rubber components and used together.

Meanwhile, another embodiment provides a molded article manufactured using the thermoplastic resin composition according to the embodiment. The molded article may be manufactured by various methods known in the art, such as injection molding and extrusion molding, using the thermoplastic resin composition.

In the molded article, the sum of burning times t1 and t2 measured for a 1.5 mm thick specimen according to the UL94 standard may be less than 35 seconds.

The molded article may have a flame retardancy of V-0 or higher measured for a 1.5 mm thick specimen according to UL94 standard.

The molded product may have an Izod impact strength of 8 kgf·cm/cm or more measured for a 1/8 inch thick specimen having a notch in accordance with ASTM D256 standard.

The molded article may have a melt-flow index (MI) of 85 g/10 min or more, measured under a condition of 275° C. and a load of 2.16 kg according to ASTM D1238 standard.

Hereinafter, preferred embodiments of the present invention will be described. However, the following examples are only preferred examples of the present invention, and the present invention is not limited by the following examples.

Examples 1 to 4 and Comparative Examples 1 to 7

The thermoplastic resin compositions of Examples 1 to 4 and Comparative Examples 1 to 7 were prepared according to the component content ratios respectively described in Table 1 below.

After mixing the components listed in Table 1, they were quantitatively and continuously introduced into the feed section of a twin-screw extruder (L/D: 44, diameter: 45 mm), and extruded/kneaded at a barrel temperature of about 260° C. to form pellets. A thermoplastic resin composition was prepared. Subsequently, after drying the thermoplastic resin composition at about 80 ° C. for about 2 hours, a cylinder temperature of about 250 ° C. and a mold temperature of about 60 ° C. were set using a 6 oz injection molding machine, and a specimen for measuring physical properties was prepared. The measured physical properties are shown in Table 2 below.

In Table 1, the content of each of (A), (B), (C) and (D) is a weight% value expressed as a percentage of the weight of each component when the sum of their total weight is 100% by weight And, the content of components (E), (F), and (G) is a relative weight part when the total weight of (A), (B), (C), and (D) is 100 parts by weight. is the value

division Example comparative example One 2 3 4 One 2 3 4 5 6 7 (A) 54 54 54 54 54 54 54 54 54 54 54 (B) 8 8 8 8 8 8 8 8 8 8 11 (C) 3 3 3 3 3 3 3 3 3 3 - (D) 35 35 35 35 35 35 35 35 35 35 35 (E) One One One One One One - One One One One (F) 2 2 One 3 - - 2 2 - 6 2 (G) 0.8 1.5 0.8 0.8 - 5.0 0.8 - 0.8 0.8 0.8

A description of each component described in Table 1 is as follows.

(A) polyamide resin

Polyamide 66 resin (product name: Leona™ 1200) from Ashahi Kasei Corporation was used.

(B) phosphorus flame retardant

Clariant's aluminum diethylphosphinate (product name: Exolite® OP 1230) was used.

(C) Melamine-based flame retardant

BASF's melamine polyphosphate (product name: Melapur® 200) was used.

(D) glass fiber

Glass fiber (product name: ECS03T-251H) of Nippon Electric Glass, which has a circular cross section, a diameter of about 10 μm, and an average length before processing of about 3 mm, and which has been surface-treated with a urethane-based compound, was used.

(E) Zinc borate

U.S. Borax's zinc borate (product name: Firebrake® 500) was used.

(F) ethylene-alpha-olefin copolymer

DuPont's ethylene-octene copolymer (product name: Fusabond® MN493D) was used.

(G) aminosilane

Aminosilane (product name: SiSiB® PC1100) from Power Chemical Corporation was used.

Property evaluation

The experimental results are shown in Table 2 below.

(1) Flame retardancy (unit: grade)

For the 1.5 mm thick specimen, the flame retardance was evaluated according to the vertical test method of the UL94 standard. Specifically, ① After attaching a 20 mm long flame to the specimen for 10 seconds, measure the burning time t1 of the specimen and record the combustion pattern, ② When the combustion is finished after the 1st welding, burn time t2 of the specimen after welding again for 10 seconds And the glowing time t3 was measured, and the combustion pattern was recorded. ③ The burning time and combustion pattern of t1, t2, and t3 (whether cotton wool was ignited by dropping, whether burning up to the clamp, etc.) By judging, the rating was calculated.

(2) Combustion time (unit: seconds)

In the flame retardancy evaluation of (1) above, the sum of the burning times t1 and t2 was calculated. Even if the flame retardance grade is the same, it was determined that the shorter the burning time (t1 + t2), the better the flame retardance.

(3) Impact resistance (unit: kgf cm/cm)

Izod impact strength was measured for a 1/8 inch thick specimen having a notch in accordance with ASTM D256 standard.

(4) Fluidity (unit: g/10min)

According to the ASTM D1238 standard, the melt-flow index (MI) was measured at 275° C. under a load of 2.16 kg.

(5) Stiffness (unit: kgf/cm ² )

Tensile strength was measured for a 3.2 mm thick specimen in accordance with the ASTM D638 standard under the condition of a tensile speed of 5 mm/min.

division Example comparative example One 2 3 4 One 2 3 4 5 6 7 flame retardancy V-0 V-0 V-0 V-0 V-0 V-0 out of class V-0 V-0 out of class out of class burning time 28.0 26.1 25.8 32.2 37.5 26.8 88.5 45.8 25.8 125.6 130.1 Izod impact strength 8.7 8.3 8.0 9.2 7.0 5.0 8.8 9.0 6.8 12.1 8.0 melt flow index 88.5 90.1 85.0 95.5 32.5 145.5 90.2 62.2 82.1 105.2 87.1 tensile strength 1,490 1,440 1,520 1,430 1,540 1,240 1,430 1,470 1,560 1,100 1,490

From Tables 1 and 2, it can be seen that the thermoplastic resin compositions of Examples can maintain excellent flame retardancy while having excellent impact resistance, fluidity and stiffness compared to the thermoplastic resin compositions of Comparative Examples.

In particular, some of the Comparative Examples 1 to 7 also had a flame retardancy rating of V-0, but the sum of the burning times t1 and t2 was lower than that of the Comparative Example in the Example of the present application, which indicates that the flame retardancy of the molded article prepared from the composition of the Example of the present application is comparative. indicates that it is superior to

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concept of the present invention defined in the appended claims are also provided. It falls within the scope of the right of invention.

Claims (15)

(A) 40 to 70% by weight of a polyamide resin;
(B) 5 to 10% by weight of a phosphorus-based flame retardant;
(C) 2 to 5% by weight of a melamine-based flame retardant; and
(D) 100 parts by weight of a base material containing 20 to 50% by weight of glass fiber
(E) 0.5 to 3 parts by weight of zinc borate (ZnB);
(F) 1 to 5 parts by weight of an ethylene-alpha-olefin copolymer, and
(G) A thermoplastic resin composition comprising 0.2 to 2 parts by weight of amino-silane. In paragraph 1,
The polyamide resin (A) is polyamide 6, polyamide 66, polyamide 46, polyamide 11, polyamide 12, polyamide 610, polyamide 612, polyamide 6I, polyamide 6T, polyamide 4T, polyamide 410, polyamide 510, polyamide 1010, polyamide 1012, polyamide 10T, polyamide 1212, polyamide 12T, polyamide MXD6, or combinations thereof. In paragraph 1,
The (A) polyamide resin is polyamide 66, a thermoplastic resin composition. In paragraph 1,
The (B) phosphorus-based flame retardant is aluminum diethyl phosphinate, triphenyl phosphate, ammonium polyphosphate, resorcinol-di (bis-2,6-dimethylphenyl) phosphate (resorcinol-di(bis-2,6-dimethylphenyl) phosphate), bisphenol A diphenyl phosphate, cyclophosphazene, diethyl phosphinate ammonium salt, or Any one of these combinations, the thermoplastic resin composition. In paragraph 4,
The (B) phosphorus-based flame retardant is aluminum diethyl phosphinate, a thermoplastic resin composition. In paragraph 1,
The (C) melamine-based flame retardant is melamine polyphosphate, melamine/ammonium polyphosphate, melamine phosphate, melamine pyrophosphate, or any combination thereof One, thermoplastic resin composition. The thermoplastic resin composition of claim 6, wherein the (C) melamine-based flame retardant is melamine polyphosphate. In paragraph 1,
The (F) ethylene-alpha-olefin copolymer has a weight average molecular weight of 10,000 to 500,000 g / mol, the thermoplastic resin composition. The thermoplastic resin composition of claim 8, wherein the (F) ethylene-alpha-olefin copolymer is an ethylene-octene copolymer. The thermoplastic of claim 1, further comprising at least one additive selected from antibacterial agents, flame retardants, nucleating agents, coupling agents, fillers, plasticizers, impact modifiers, lubricants, release agents, heat stabilizers, antioxidants, UV stabilizers, pigments, and dyes. resin composition. A molded article manufactured from the thermoplastic resin composition according to any one of claims 1 to 10. In paragraph 11,
The molded article is a molded article in which the sum of burning times t1 and t2 measured for a 1.5 mm thick specimen according to the UL94 standard is less than 35 seconds. In paragraph 11,
The molded article has a flame retardancy of V-0 or higher measured on a 1.5 mm thick specimen according to the UL94 standard. In paragraph 11,
The molded article has an Izod impact strength of 8 kgf cm / cm or more, measured for a 1/8 inch thick specimen that is notched according to ASTM D256 standard. In paragraph 11,
The molded article has a melt flow index of 85 g / 10min or more, measured under 275 ° C. and 2.16 kg load conditions according to ASTM D1238 standard.