KR20200049106A - Thermoplastic resin composition and article produced therefrom - Google Patents

Abstract

A thermoplastic resin composition of the present invention includes: 100 parts by weight of a thermoplastic resin comprising 75 to 95 wt% of polyester resin and 5 to 25 wt% of polycarbonate resin; 50 to 100 parts by weight of glass fibers; 5 to 10 parts by weight of an isobutylene-containing aromatic vinyl polymer; and 0.1 to 1 part by weight of sodium phosphate salt. The thermoplastic resin composition is excellent in metal bonding properties, impact resistance, appearance characteristics, and the like.

Description

Thermoplastic resin composition and molded article manufactured therefrom {THERMOPLASTIC RESIN COMPOSITION AND ARTICLE PRODUCED THEREFROM}

The present invention relates to a thermoplastic resin composition and a molded article produced therefrom. More specifically, the present invention relates to a thermoplastic resin composition excellent in metal bonding properties, impact resistance, appearance characteristics, and the like, and a molded article manufactured therefrom.

As engineering plastics, polyester resins, polycarbonate resins, and blends thereof exhibit useful properties, and are applied to various fields including interior and exterior materials of electrical and electronic products. However, the polyester resin has a problem of slow crystallization rate, low mechanical strength, and poor impact resistance.

In order to solve this, many attempts have been made to improve mechanical strength and impact resistance by mixing an additive such as an inorganic filler with a polyester resin. For example, polybutylene terephthalate (PBT) material reinforced with an inorganic filler such as glass fiber is used as a mobile phone housing. However, these materials also have limitations in improving the impact resistance, and an impact modifier may be additionally applied to improve the desired impact resistance, but in the case of a general impact modifier, it is eluted to the product surface during high temperature processing and deteriorates appearance characteristics, etc. there is a problem. In addition, the reinforced polybutylene terephthalate material is applied to a segment of a metal housing of a mobile phone, etc., but due to a fast solidifying speed during molding, there is a fear that metal bonding strength and the like are deteriorated.

Therefore, there is a need to develop a thermoplastic resin composition excellent in metal bonding properties, impact resistance, appearance characteristics, and balance of these properties.

Background art of the present invention is disclosed in Japanese Patent Publication No. 2012-533645 and the like.

An object of the present invention is to provide a thermoplastic resin composition excellent in metal bonding properties, impact resistance, appearance properties, and the like.

Another object of the present invention is to provide a molded article formed from the thermoplastic resin composition.

The above and other objects of the present invention can be achieved by the present invention described below.

One aspect of the invention relates to a thermoplastic resin composition. The thermoplastic resin composition is 100 parts by weight of a thermoplastic resin comprising 75 to 95% by weight of polyester resin and 5 to 25% by weight of polycarbonate resin; 50 to 100 parts by weight of glass fibers; 5 to 10 parts by weight of an isobutylene-containing aromatic vinyl polymer; And 0.1 to 1 part by weight of sodium phosphate salt.

In embodiments, the polyester resin may include one or more of polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polytrimethylene terephthalate, and polycyclohexylenedimethylene terephthalate.

In an embodiment, the polyester resin may include 5 to 30% by weight of polyethylene terephthalate and 70 to 95% by weight of polybutylene terephthalate.

In an embodiment, the isobutylene-containing aromatic vinyl-based polymer may include an aromatic vinyl-based monomer; And isobutylene; may be a polymer of the reaction mixture comprising.

In an embodiment, the isobutylene-containing aromatic vinyl-based polymer may include at least one of a styrene-isobutylene block copolymer and a styrene-isobutylene-styrene block copolymer.

In an embodiment, the sodium phosphate salt may include one or more of sodium pyrophosphate, sodium triphosphate, sodium tetrapolyphosphate, sodium pentapolyphosphate and sodium hexametaphosphate.

In an embodiment, the weight ratio of the isobutylene-containing aromatic vinyl-based polymer and sodium phosphate salt may be 1: 0.02 to 1: 0.1.

In an embodiment, the thermoplastic resin composition may have a metal bonding strength of 30 to 50 MPa measured according to ISO 19095.

In an embodiment, the thermoplastic resin composition has a crack occurrence drop height of 80 to 100 cm of a 1 mm thick specimen measured using a dart weighing 500 g according to a DuPont drop measurement method. Can be.

Another aspect of the invention relates to a molded article. The molded article is characterized in that it is formed from the thermoplastic resin composition.

The present invention has the effect of the invention to provide a thermoplastic resin composition excellent in metal bonding properties, impact resistance, appearance properties and the like and a molded article formed therefrom.

Hereinafter, the present invention will be described in detail.

The thermoplastic resin composition according to the present invention includes (A) a thermoplastic resin; (B) glass fibers; And (C) an isobutylene-containing aromatic vinyl polymer; And (D) sodium phosphate salt.

(A) Thermoplastic resin

The thermoplastic resin of the present invention includes (A1) polyester resin and (A2) polycarbonate resin.

(A1) Polyester resin

As the polyester resin of the present invention, a polyester resin used in a common thermoplastic resin composition can be used. For example, the polyester resin is a dicarboxylic acid component, terephthalic acid (TPA), isophthalic acid (IPA), 1,2-naphthalene dicarboxylic acid, 1,4-naphthalene dicar Carboxylic acid, 1,5-naphthalene dicarboxylic acid, 1,6-naphthalene dicarboxylic acid, 1,7-naphthalene dicarboxylic acid, 1,8-naphthalene dicarboxylic acid, 2,3-naphthalene dicarboxylic acid Aromatic dicarboxylic acids such as carboxylic acid, 2,6-naphthalene dicarboxylic acid and 2,7-naphthalenedicarboxylic acid, dimethyl terephthalate (DMT), dimethyl isophthalate, dimethyl- 1,2-naphthalate, dimethyl-1,5-naphthalate, dimethyl-1,7-naphthalate, dimethyl-1,7-naphthalate, dimethyl-1,8-naphthalate, dimethyl-2,3-na Aromatic dicarboxylates such as phthalate, dimethyl-2,6-naphthalate, and dimethyl-2,7-naphthalate As all components, ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 2,2-dimethyl-1,3-propanediol, 1,3-butanediol, 1,4-butanediol, 1,5- It can be obtained by polycondensing pentanediol, 1,5-pentanediol, 1,6-hexanediol, cyclic alkylene diol, and the like.

In an embodiment, the polyester resin is polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN) and polytrimethylene terephthalate (PTT), polycyclohexylenedimethylene terephthalate ( PCT).

In an embodiment, the polyester resin may comprise 5 to 30% by weight of polyethylene terephthalate, for example 10 to 25% by weight and 70 to 95% by weight of polybutylene terephthalate, for example 75 to 90% by weight have. In the above range, the impact resistance of the thermoplastic resin composition, appearance characteristics, metal bonding (metal bonding strength), and the like may be excellent.

In an embodiment, the polyester resin of the present invention may have an intrinsic viscosity [η] measured at 25 ° C using an o-chloro phenol solvent of 0.5 to 1.5 dl / g, for example, 0.7 to 1.3 dl / g. . In the above range, the mechanical properties and the like of the thermoplastic resin composition may be excellent.

In an embodiment, the polyester resin (A1) may be included in 75 to 95% by weight, for example, 80 to 90% by weight of the total 100% by weight of the thermoplastic resin (A). When the content of the polyester resin is less than 75% by weight of the total 100% by weight of the thermoplastic resin, there is a fear that the impact resistance of the thermoplastic resin composition is lowered, and when it exceeds 95% by weight, the appearance characteristics of the thermoplastic resin composition, etc. There is a risk of deterioration.

(A2) Polycarbonate resin

The polycarbonate resin according to an embodiment of the present invention can improve the impact resistance, appearance characteristics, and the like of the thermoplastic resin composition, and a polycarbonate resin used in a conventional thermoplastic resin composition may be used. For example, an aromatic polycarbonate resin produced by reacting diphenols (aromatic diol compounds) with precursors such as phosgene, halogen formate, and carbonic acid diester can be used.

In embodiments, the diphenols include 4,4'-biphenol, 2,2-bis (4-hydroxyphenyl) propane, 2,4-bis (4-hydroxyphenyl) -2-methylbutane, 1 , 1-bis (4-hydroxyphenyl) cyclohexane, 2,2-bis (3-chloro-4-hydroxyphenyl) propane, 2,2-bis (3,5-dichloro-4-hydroxyphenyl) Propane, 2,2-bis (3-methyl-4-hydroxyphenyl) propane, 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane, and the like, but is not limited thereto. . For example, 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (3,5-dichloro-4-hydroxyphenyl) propane, 2,2-bis (3-methyl-4- Hydroxyphenyl) propane, 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane or 1,1-bis (4-hydroxyphenyl) cyclohexane can be used, specifically, bisphenol- 2,2-bis (4-hydroxyphenyl) propane called A can be used.

In an embodiment, the polycarbonate resin may be used having a branched chain, for example, 0.05 to 2 mol% of trivalent or higher polyfunctional compound, specifically, 3, based on the total diphenols used for polymerization. It is also possible to use branched polycarbonate resins prepared by adding a compound having a phenol group or more.

In embodiments, the polycarbonate resin may be used in the form of a homo polycarbonate resin, copolycarbonate resin or a blend thereof. In addition, the polycarbonate resin may be partially or wholly substituted with an aromatic polyester-carbonate resin obtained by polymerization reaction in the presence of an ester precursor, such as a bifunctional carboxylic acid.

In an embodiment, the polycarbonate resin may have a weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) of 20,000 to 50,000 g / mol, for example, 25,000 to 40,000 g / mol. In the above range, the impact resistance, fluidity (processability), and the like of the thermoplastic resin composition may be excellent.

In an embodiment, the polycarbonate resin (A1) may be included in 5 to 25% by weight, for example, 10 to 20% by weight of the total 100% by weight of the thermoplastic resin (A). If the content of the polycarbonate resin is less than 5% by weight of the total 100% by weight of the thermoplastic resin, there is a fear that the metal bonding property, appearance properties, etc. of the thermoplastic resin composition, if it exceeds 25% by weight, the thermoplastic resin composition There is a possibility that the impact property or the like is lowered.

(B) fiberglass

The glass fiber of the present invention is capable of improving mechanical properties such as rigidity of the thermoplastic resin composition, impact resistance, and the like, and glass fibers used in a conventional thermoplastic resin composition can be used.

In an embodiment, the glass fiber may be in the form of a fiber, it may have a cross-section of various shapes such as circular, oval, rectangular. For example, it may be desirable in terms of mechanical properties to use fibrous glass fibers of circular and / or rectangular cross-section.

In an embodiment, the glass fiber of the circular cross section may have a cross section diameter of 5 to 20 μm, a length of 2 to 20 mm before processing, and the glass fiber of the rectangular cross section has an aspect ratio of the cross section (long section of cross section / short section of section) Is 1.5 to 10, the short diameter may be 2 to 10 μm, and the length before processing may be 2 to 20 mm. In the above range, the stiffness and processability of the thermoplastic resin composition may be improved.

In an embodiment, the glass fiber may be treated with a conventional surface treatment agent.

In an embodiment, the glass fiber may be included in 50 to 100 parts by weight, for example, 60 to 90 parts by weight based on 100 parts by weight of the thermoplastic resin. When the content of the glass fiber is less than 50 parts by weight based on 100 parts by weight of the thermoplastic resin, there is a fear that the stiffness, impact resistance, etc. of the thermoplastic resin composition is lowered, and when it exceeds 100 parts by weight, the processability of the thermoplastic resin composition, There is a possibility that appearance characteristics, metal bonding properties, and the like are deteriorated.

(C) Aromatic vinyl polymer containing isobutylene

The isobutylene-containing aromatic vinyl-based polymer of the present invention is applied together with a sodium phosphate salt, and can improve the impact resistance, appearance characteristics, metal bonding properties, etc. of the thermoplastic resin composition without deteriorating the physical properties of the thermoplastic resin. Monomer; And isobutylene; may be used a polymer of the reaction mixture comprising.

In an embodiment, the isobutylene-containing aromatic vinyl-based polymer may include styrene-isobutylene block copolymer, styrene-isobutylene-styrene block copolymer, combinations thereof, and the like.

In an embodiment, the isobutylene-containing aromatic vinyl-based polymer may include isobutylene in 70 to 90% by weight, for example, 75 to 85% by weight of 100% by weight of the total isobutylene-containing aromatic vinyl-based polymer. . In the above range, the impact resistance of the thermoplastic resin composition, metal bonding strength, and the like may be excellent.

In an embodiment, the isobutylene-containing aromatic vinyl-based polymer may have a weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) of 40,000 to 80,000 g / mol, for example, 45,000 to 70,000 g / mol. In the above range, the impact resistance of the thermoplastic resin composition, metal bonding strength, and the like may be excellent.

In an embodiment, the isobutylene-containing aromatic vinyl-based polymer may be included in 5 to 10 parts by weight, for example, 6 to 9 parts by weight based on 100 parts by weight of the thermoplastic resin. When the content of the isobutylene-containing aromatic vinyl-based polymer is less than 5 parts by weight with respect to 100 parts by weight of the thermoplastic resin, there is a fear that impact resistance of the thermoplastic resin composition is lowered, and when it exceeds 10 parts by weight, the thermoplastic resin There is a possibility that the metal bonding property (metal bonding power), appearance characteristics, and the like of the composition are lowered.

(D) Sodium phosphate salt

The sodium phosphate salt of the present invention can be applied together with an aromatic vinyl-based polymer containing isobutylene to reduce the decomposition of the thermoplastic resin and improve the impact resistance, appearance characteristics, metal bonding properties, etc. of the thermoplastic resin composition without deteriorating physical properties. As a thing, sodium phosphate salt (sodium phosphate salt) and the like used in a conventional thermoplastic resin composition can be used.

In embodiments, the sodium phosphate salt may be sodium pyrophosphate, sodium triphosphate, sodium tetrapolyphosphate, sodium pentapolyphosphate, sodium hexametaphosphate, combinations thereof, and the like.

In an embodiment, the sodium phosphate salt may be included in an amount of 0.1 to 1 part by weight, for example, 0.2 to 0.9 part by weight based on 100 parts by weight of the thermoplastic resin. When the content of the sodium phosphate salt is less than 0.1 parts by weight with respect to 100 parts by weight of the thermoplastic resin, resin decomposition may occur due to the transesterification reaction, and impact resistance and the like of the thermoplastic resin composition may be deteriorated. When the amount is exceeded, the sodium phosphate salt acts as an impurity and there is a fear that the impact resistance of the thermoplastic resin composition is lowered.

In an embodiment, the weight ratio (C: D) of the isobutylene-containing aromatic vinyl-based polymer (C) and sodium phosphate salt (D) is 1: 0.02 to 1: 0.1, for example 1: 0.03 to 1: 0.08 days Can be. In the above range, the impact resistance of the thermoplastic resin composition, appearance properties, metal bonding properties, and balance of these properties may be excellent.

The thermoplastic resin composition according to an embodiment of the present invention may further include an additive included in a conventional thermoplastic resin composition. The additives may include, but are not limited to, flame retardants, antioxidants, anti-dropping agents, lubricants, release agents, nucleating agents, antistatic agents, pigments, dyes, mixtures thereof, and the like. When using the additive, the content may be 0.001 to 40 parts by weight, for example, 0.1 to 10 parts by weight based on 100 parts by weight of the thermoplastic resin.

The thermoplastic resin composition according to an embodiment of the present invention may be in the form of pellets mixed with the above components and melt-extruded at 200 to 300 ° C, for example, 250 to 280 ° C, using a conventional twin-screw extruder.

In an embodiment, the thermoplastic resin composition may have a metal bonding strength measured according to ISO 19095 of 30 to 50 MPa, for example, 35 to 45 MPa.

In an embodiment, the thermoplastic resin composition has a crack generation drop height of 80 to 100 cm, a 1 mm thick specimen measured using a dart weighing 500 g according to a DuPont drop measurement method, It may be, for example, 82 to 95 cm.

In a specific embodiment, the thermoplastic resin composition has a crystallization temperature of 190 to 200 ° C measured at a temperature increase rate of 20 ° C / min and a temperature reduction rate of -10 ° C / min under differential scanning calorimetry (DSC), for example , 193 to 196 ℃. Here, the crystallization temperature can be measured by repeatedly increasing and decreasing the temperature, and if the crystallization temperature is severely decreased as cycles are repeated, it can be predicted that decomposition of the resin occurs.

The molded article according to the present invention is formed from the thermoplastic resin composition. The thermoplastic resin composition may be manufactured in a pellet form, and the manufactured pellet may be manufactured into various molded products through various molding methods such as injection molding, extrusion molding, vacuum molding, and casting molding. Such molding methods are well known by those skilled in the art to which this invention pertains. The molded article is excellent in metal bonding properties, impact resistance, appearance characteristics, and balance of these properties, and thus is useful as a housing for electrical and electronic products, for example, a segment material of a mobile phone metal housing.

Hereinafter, the present invention will be described in more detail through examples, but these examples are for the purpose of description only and should not be construed as limiting the invention.

Example

Hereinafter, specifications of each component used in Examples and Comparative Examples are as follows.

(A) Thermoplastic resin

(A1) A polybutylene terephthalate (PBT manufactured by China National BlueStar) having an intrinsic viscosity [η] of 1.3 dl / g measured using an o-chlorophenol solvent at 25 ° C was used.

(A2) Polyethylene terephthalate (PET, manufactured by SK Chemicals) having an intrinsic viscosity [η] of 0.8 dl / g measured using an o-chlorophenol solvent at 25 ° C was used.

(A3) Bisphenol-A-based polycarbonate resin (weight average molecular weight: 25,000 g / mol) was used.

(B) fiberglass

A glass fiber (manufacturer: Nitto Boseki) having a rectangular cross section having a shorter diameter of 7 µm and an aspect ratio of 4 and a length of 3 mm before processing was used.

(C) Aromatic vinyl polymer

(C1) As an aromatic vinyl-based polymer containing isobutylene, a styrene-isobutylene-styrene block copolymer (manufacturer: Kaneka) was used.

(C2) Styrene-ethylene butylene-styrene block copolymer (manufacturer: Shell Japan) was used.

(C3) A styrene-butadiene-styrene block copolymer (manufacturer: Shell Chemicals) was used.

(D) Phosphate

(D1) As sodium phosphate salt, sodium pyrophosphate (manufacturer: Innophos, product name: SAPP) was used.

(D2) Triphenyl phosphate (manufacturer: DAIHACHI, product name: PHOSFLEX TPP) was used.

(E) Impact modifier

(E1) Glycidyl methacrylate-modified ethylene-butylacrylate copolymer (manufacturer: Dupont) was used.

(E2) Maleic anhydride-modified ethylene-butene copolymer (manufacturer: Mitsui chemicals) was used.

Examples 1 to 3 and Comparative Examples 1 to 9

After adding each component to the contents as described in Tables 1 and 2, pellets were prepared by extruding at 260 ° C. Extrusion was performed using a twin-screw extruder having a L / D = 44 and a diameter of 45 mm, and the pellets produced were dried at 80 ° C for 4 hours or more, and then injection molded in a 6 oz injection machine (molding temperature 230 ° C, mold temperature: 150 ° C). Specimens were prepared. The physical properties of the prepared specimens were evaluated in the following manner, and the results are shown in Tables 1 and 2 below.

Method of measuring properties

(1) Surface impact strength (unit: cm): Based on the DuPont drop measurement method, a crack generated drop height of a 1 mm thick specimen was measured using a dart weighing 500 g.

(2) Metal bonding force (unit: MPa): According to ISO 19095, the bonding strength was measured after bonding the aluminum-based metal specimen and the thermoplastic resin composition specimen. Here, the metal specimen used was a metal specimen having a TRI surface treatment of Geo Nation Co. to facilitate bonding with the resin composition specimen. In addition, the metal and thermoplastic resin composition specimens used were 1.2 cm × 4 cm × 0.3 cm in size, and 1.2 cm × 0.3 cm cross-sections were attached to each other to measure bonding strength.

(3) Crystallization temperature (unit: ℃): was measured under differential heating calorimetry (DSC) at a heating rate of 20 ° C / min and a temperature reduction rate of -10 ° C / min.

(4) Appearance evaluation: It was visually confirmed whether white marks were generated on the surface of the injection specimens prepared in Examples and Comparative Examples. (×: not occurred, ○: occurred)

Example Comparative example One 2 3 One 2 3 (A)
(weight%) (A1) 67 67 67 67 67 67 (A2) 13 13 20 - 33 13 (A3) 20 20 13 33 - 20 (B) (parts by weight) 67 67 67 67 67 67 (C1) (parts by weight) 6.7 6.7 6.7 6.7 6.7 - (C2) (parts by weight) - - - - - 6.7 (C3) (parts by weight) - - - - - - (D1) (parts by weight) 0.25 0.5 0.5 0.5 0.5 0.5 (D2) (parts by weight) - - - - - - (E1) (parts by weight) - - - - - - (E2) (parts by weight) - - - - - - Cotton impact strength (cm) 82 85 83 70 71 65 Metal bonding force (MPa) 36 38 37 37 29 28 Crystallization temperature (1 ^st cycle) 195.3 195.4 195.5 197.5 196.8 195.3 Crystallization temperature (2 ^nd cycle) 194.6 194.3 194.6 196.8 196.7 194.8 Crystallization temperature (3 ^rd cycle) 194.0 194.1 194.1 196.1 196.8 194.0 Whether a white mark occurs × × × × ○ ○

* Parts by weight: parts by weight relative to 100 parts by weight of the thermoplastic resin (A)

Comparative example 4 5 6 7 8 9 (A)
(weight%) (A1) 67 67 67 67 67 67 (A2) 13 13 13 13 13 13 (A3) 20 20 20 20 20 20 (B) (parts by weight) 67 67 67 67 67 67 (C1) (parts by weight) - - - 6.7 - - (C2) (parts by weight) - - - - - - (C3) (parts by weight) 6.7 - - - - - (D1) (parts by weight) 0.5 0.5 0.5 - 0.05 1.1 (D2) (parts by weight) - - - 0.5 - - (E1) (parts by weight) - 6.7 - - - - (E2) (parts by weight) - - 6.7 - - - Cotton impact strength (cm) 75 72 63 60 67 62 Metal bonding force (MPa) 33 28 29 28 34 39 Crystallization temperature (1 ^st cycle) 195.7 195.4 195.6 186.2 195.5 195 Crystallization temperature (2 ^nd cycle) 195.2 195.0 195.2 178.9 192.3 194.9 Crystallization temperature (3 ^rd cycle) 194.6 194.5 194.3 168.2 188.9 194.3 Whether a white mark occurs ○ ○ ○ × × ×

* Parts by weight: parts by weight relative to 100 parts by weight of the thermoplastic resin (A)

From the above results, it can be seen that the thermoplastic resin composition of the present invention has excellent impact resistance, appearance characteristics, and metal bonding properties.

On the other hand, in Comparative Example 1 in which a small amount of the polyester resin was applied and the polycarbonate resin was applied in excess, it was found that the impact resistance and the like were lowered, and in the case of Comparative Example 2 in which the polycarbonate resin was not applied, the impact resistance and appearance characteristics , It can be seen that the metal bonding properties and the like were lowered, and Comparative Examples 3, 4, and 5 in which (C2), (C3) (E1) and (E2) were applied instead of the isobutylene-containing aromatic vinyl-based polymer (C1) of the present invention And in the case of 6, it can be seen that the impact resistance, appearance characteristics, metal bonding properties, etc. were lowered, respectively, and in the case of Comparative Example 7 in which triphenyl phosphate (D2) was applied instead of the sodium phosphate salt (D1) of the present invention, the impact resistance, It can be seen that the metal bonding properties and the like were lowered, and in the case of Comparative Example 8 in which a small amount of sodium phosphate salt was applied, impact resistance and appearance characteristics were lowered, and crystallization temperature in the 3 ^rd cycle was significantly lowered, resulting in resin decomposition. It can be seen that, and in the case of Comparative Example 9 in which sodium phosphate salt was excessively applied, it can be seen that impact resistance, appearance characteristics, and the like were lowered.

Simple modifications or changes of the present invention can be easily carried out by those skilled in the art, and all such modifications or changes can be considered to be included in the scope of the present invention.

Claims (10)

100 parts by weight of a thermoplastic resin comprising 75 to 95% by weight of polyester resin and 5 to 25% by weight of polycarbonate resin;
50 to 100 parts by weight of glass fibers;
5 to 10 parts by weight of an aromatic vinyl-containing polymer containing isobutylene; And
A thermoplastic resin composition comprising 0.1 to 1 part by weight of a sodium phosphate salt.
The method of claim 1, wherein the polyester resin is polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polytrimethylene terephthalate and polycyclohexylene dimethylene terephthalate, characterized in that it comprises at least one of Thermoplastic resin composition.
The thermoplastic resin composition of claim 1, wherein the polyester resin comprises 5 to 30% by weight of polyethylene terephthalate and 70 to 95% by weight of polybutylene terephthalate.
The method of claim 1, wherein the isobutylene-containing aromatic vinyl-based polymer is an aromatic vinyl-based monomer; And isobutylene; thermoplastic resin composition, characterized in that the polymer of the reaction mixture comprising.
The thermoplastic resin composition according to claim 1, wherein the isobutylene-containing aromatic vinyl-based polymer includes at least one of a styrene-isobutylene block copolymer and a styrene-isobutylene-styrene block copolymer.
The thermoplastic resin composition according to claim 1, wherein the sodium phosphate salt comprises at least one of sodium pyrophosphate, sodium triphosphate, sodium tetrapolyphosphate, sodium pentapolyphosphate, and sodium hexametaphosphate.
The thermoplastic resin composition according to claim 1, wherein the weight ratio of the isobutylene-containing aromatic vinyl-based polymer and the sodium phosphate salt is 1: 0.02 to 1: 0.1.
The thermoplastic resin composition of claim 1, wherein the thermoplastic resin composition has a metal bonding strength of 30 to 50 MPa measured according to ISO 19095.
The method of claim 1, wherein the thermoplastic resin composition is cracked (crack) of the 1 mm thickness specimen measured using a weight (dart) of 500 g weight based on the DuPont drop (DuPont drop) measurement method 80 to 100 A thermoplastic resin composition characterized in that it is cm.
A molded article formed from the thermoplastic resin composition according to any one of claims 1 to 9.