KR101745047B1 - Electroconductive polyamide/polyphenylene ether resin composition and molded product for vehicle using the same - Google Patents

Abstract

The present invention relates to a conductive polyamide / polyphenylene ether resin composition, which comprises (a) a base resin comprising (a-1) polyphenylene ether and (a-2) polyamide; (b) impact modifiers; (c) a compatibilizer; And (d) a conductive filler comprising (d-1) carbon black or (d-2) carbon fibril, wherein the conductive polyamide / polyphenylene ether resin composition has a dart drop impact according to ASTM D3763 The strength may be 30 to 80 J, and the surface resistance may be 10 to 10 ¹¹ ? / ?.
The conductive polyamide / polyphenylene ether resin composition of the present invention is excellent in mechanical strength, impact resistance and conductivity and can be applied to electrostatic painting. It is also possible to control the components constituting the resin composition so that the polyphenylene ether and the polyamide are not first kneaded and compatibilized, and the conductive filler is added to the polyphenylene ether resin composition before commercialization, And excellent conductivity.

Description

TECHNICAL FIELD [0001] The present invention relates to a conductive polyamide / polyphenylene ether resin composition, and a molded article for an automobile manufactured from the conductive polyamide / polyphenylene ether resin composition. [0002]

TECHNICAL FIELD The present invention relates to a conductive polyamide / polyphenylene ether resin composition and a molded article for automobile manufactured therefrom, and more particularly to a polyamide / polyphenylene ether resin composition having excellent mechanical strength, impact resistance and conductivity .

Plastic materials are less resistant to heat and flame retardancy than metal or ceramic materials, but are widely used as industrial materials for automobiles, electric, electronic and industrial fields, from household goods to lightweight, freedom of design and molding processability have.

A wide variety of plastic materials have been developed, ranging from common plastics (commodity plastics) to engineering plastics, and plastics are widely used in applications requiring a variety of functions and performance.

Of these, polyphenylene ether has excellent electrical and mechanical properties and has a high heat distortion temperature, which can be used in a wide range of engineering plastic materials.

Polyphenylene ether was developed by General Electric (GE) in the United States and has become a useful industrial material as a blend with high impact polystyrene based on excellent heat resistance. More recently, polyamide / polyphenylene ether by a reaction extrusion technique which commercializes an emulsion blend by a chemical method, an alloy type such as polypropylene / polyphenylene ether in which a compatibilizing agent is added as a third component .

Particularly, polyamide / polyphenylene ether effectively compensates for the disadvantages of each constituent resin and exhibits a balance of physical properties such as heat resistance, impact resistance and chemical resistance, and is useful as a wheel cap, a junction box and the like Automotive exterior parts, and under the hood components.

In recent years, there has been a demand for a plastic external component material capable of performing electrostatic painting at the same time as other metallic material parts. For this application, General Electric developed a conductive polyamide / polyphenylene ether and successfully applied it to automotive fender parts applications (EP 685527 B1).

The development of conductive polyamide / polyphenylene ether enables electrostatic coating at the same time as other metal parts, and the production cost is reduced because no separate coating process is required.

(JP H04-300956 A) in which a conductive filler such as carbon fiber or carbon black is added as a method of imparting conductivity to polyamide / polyphenylene ether has been proposed. However, when a carbon fiber is used, the formability of a product is poor However, when ordinary carbon black is used, it is necessary to add a large amount of carbon black in order to achieve the conductivity necessary for electrostatic painting, so that there is a problem that the impact resistance and the moldability become insufficient.

In order to solve the problem of impact resistance and formability, although the nano-sized carbon fiber or conductive carbon black is used by adjusting the size, there is a problem that the compatibility of polyamide / polyphenylene ether is lowered (JP 2756548 B2).

In order to solve the problem of lowering the compatibility and to produce polyamide / polyphenylene ether of excellent physical properties, the compatibilizing reaction occurring between the polyphenylene ether and the polyamide and the compatibilizer at the time of extrusion processing proceeds smoothly .

To solve this problem, in the prior art, a method of compatibilizing a polyamide and a polyphenylene ether and then adding a conductive carbon black is disclosed (EP 0685527 B1) in order to facilitate a commercialization reaction.

However, this method requires the addition of polyamide / polyphenylene ether, compatibilizer and other additives in a special order of addition, using a special extrusion processing facility with a plurality of side feeders. This is uneconomical due to a large amount of facility investment, and causes a problem of productivity deterioration due to the restriction of the order of input of raw materials.

In order to solve the above problems, the present invention provides a conductive polyamide / polyphenylene ether which is excellent in properties inherent in polyamide / polyphenylene ether and can be applied to on-line electrostatic painting, while improving physical properties and economical efficiency The study was conducted to

It is an object of the present invention to provide a conductive polyamide / polyphenylene ether resin composition which is excellent in mechanical strength, impact resistance and conductivity and applicable to electrostatic painting.

In addition, it is not necessary to first knead the polyphenylene ether and the polyamide by adjusting the components constituting the resin composition, and the conductive filler is added to the polyphenylene ether resin composition before commercialization and melt-kneaded, And a conductive polyamide / polyphenylene ether resin composition having excellent conductivity.

It is another object of the present invention to provide a conductive polyamide / polyphenylene ether resin composition which is excellent in productivity and economy by increasing the flexibility of production means.

In order to achieve the above object, a conductive polyamide / polyphenylene ether resin composition according to an embodiment of the present invention comprises (a) a base comprising (a-1) polyphenylene ether and (a- Suzy; (b) impact modifiers; (c) a compatibilizer; And (d) a conductive filler comprising (d-1) carbon black or (d-2) carbon fibril, wherein the conductive polyamide / polyphenylene ether resin composition has a dart drop impact according to ASTM D3763 The strength may be 30 to 80 J, and the surface resistance may be 10 to 10 ¹¹ ? / ?.

(B) is 1 to 30 parts by weight, the compatibilizing agent (c) is 0.2 to 10 parts by weight, and the conductive filler (d) is 0.1 to 3.5 parts by weight based on 100 parts by weight of the base resin (a) Weight portion.

The base resin (a) may be composed of 10 to 65% by weight of the polyphenylene ether (a-1) and 35 to 90% by weight of the polyamide (a-2).

Wherein the polyphenylene ether (a-1) is selected from the group consisting of poly (2,6-dimethyl-1,4-phenylene) ether, poly (2,6- Propylene-1,4-phenylene) ether, poly (2-methyl-6-ethyl- Ether, poly (2-ethyl-6-propyl-1,4-phenylene) ether, poly (2,6- (2,6-dimethyl-1,4-phenylene) ether and poly (2,3,6-trimethyl-1,4-phenylene) , 6-triethyl-1, 4-phenylene) ether, or two or more thereof.

The polyamide (a-2) may be selected from the group consisting of polyamide 6, polyamide 66, polyamide 46, polyamide 11, polyamide 12, polyamide 610, polyamide 612, polyamide 6/66, polyamide 6/612, poly Amide MXD6, polyamide 6 / MXD6, polyamide 66 / MXD6, polyamide 6T, polyamide 6I, polyamide 6 / 6T, polyamide 6 / 6I, polyamide 66 / 6T, polyamide 66 / / 6T / 6I, polyamide 66 / 6T / 6I, polyamide 9T, polyamide 9I, polyamide 6 / 9T, polyamide 6 / 9I, polyamide 66 / 9T, polyamide 6/12 / 9T, polyamide 66 / 12 / 9T, polyamide 6/12 / 9I or polyamide 66/12 / 6I.

The impact modifier (b) may include at least one of (b-1) a styrene elastomer or (b-2) an olefin elastomer.

The styrene-based elastomer (b-1) is a block copolymer comprising an aromatic vinyl compound and a conjugated diene compound; A hydrogenated block copolymer obtained by hydrogenating a block copolymer comprising an aromatic vinyl compound and a conjugated diene compound; Modified block copolymer obtained by modifying said block copolymer with a compound selected from the group consisting of?,? -Unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives, and a modified block copolymer obtained by modifying said hydrogenated block copolymer with?,? A modified hydrogenated block copolymer modified with a compound selected from the group consisting of a carboxylic acid, an unsaturated dicarboxylic acid, and a?,? - unsaturated dicarboxylic acid derivative.

The styrene-based elastomer (b-1) may be a styrene-ethylene-butylene-styrene copolymer, a styrene-butadiene- A styrene-ethylene-butadiene-styrene copolymer, a styrene-ethylene-butadiene-styrene copolymer obtained by modifying the above materials with a compound selected from the group of an?,? -Unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives, Modified styrene-butadiene-styrene copolymer, modified styrene-ethylene-propylene-styrene copolymer, modified styrene-isoprene-styrene copolymer, modified styrene-ethylene copolymer and modified styrene-ethylene-butadiene copolymer -Styrene copolymers. ≪ / RTI >

The olefinic elastomer (b-2) is at least one member selected from the group consisting of high-density polyethylene, low-density polyethylene, linear low-density polyethylene, ethylene-alpha-olefin copolymer, Modified low-density polyethylene, modified linear low-density polyethylene, and modified ethylene-? -Olefin copolymer modified with a compound selected from the group consisting of ethylene-? -Olefin,

The impact modifier (b) may include (b-1) a styrene-based elastomer and (b-2) an olefin-based elastomer.

The styrene-based elastomer (b-1) may be a styrene-ethylene-butylene-styrene copolymer, a styrene-butadiene- A styrene-ethylene-butadiene-styrene copolymer, a styrene-ethylene-butadiene-styrene copolymer obtained by modifying the above materials with a compound selected from the group of an?,? -Unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives, Modified styrene-butadiene-styrene copolymer, modified styrene-ethylene-propylene-styrene copolymer, modified styrene-isoprene-styrene copolymer, modified styrene-ethylene copolymer and modified styrene-ethylene-butadiene copolymer -Styrene copolymer, and the olefin elastomer (b-2) is at least one selected from the group consisting of high-density polyethylene, low-density poly Tylene, linear low density polyethylene, ethylene -? - olefin copolymer, modified high density polyethylene obtained by modifying each of the above materials with a compound selected from the group of?,? - unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives , Modified low-density polyethylene, modified linear low-density polyethylene, and modified ethylene -? - olefin copolymer.

The styrene-based elastomer (b-1) may be a styrene-ethylene-butylene-styrene copolymer, a styrene-butadiene- (B-2) may be at least one selected from the group consisting of high density polyethylene, low density polyethylene, linear low density polyethylene, ethylene -? - olefin copolymer Modified low density polyethylene, modified linear low density polyethylene and modified ethylene -? - olefin copolymer modified with a compound selected from the group of?,? - unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives Or a combination thereof.

The conductive polyamide / polyphenylene ether resin composition comprises a conductive polyphenylene ether formed by melt kneading (a-1) a polyphenylene ether, (b) an impact modifier, (c) a compatibilizer, and (d) (A-2) a polyamide is added to the resin composition and melt-kneaded.

Wherein the base resin (a) comprises 10 to 65% by weight of the polyphenylene ether (a-1) and 35 to 90% by weight of the polyamide (a-2) The amount of the impact modifier (b) may be 1 to 30 parts by weight, the amount of the compatibilizer (c) may be 0.2 to 10 parts by weight, and the amount of the conductive filler (d) may be 0.1 to 3.5 parts by weight.

A molded article for an automobile according to an embodiment of the present invention can be produced from the conductive polyamide / polyphenylene ether resin composition described above.

It is possible to provide a resin composition excellent in impact resistance and conductivity by optimizing kinds and contents of a base resin, an impact modifier, a compatibilizer, and a conductive filler constituting the conductive polyamide / polyphenylene ether resin composition.

In the case of producing the conductive polyamide / polyphenylene ether resin composition, it is not necessary to first knead the polyphenylene ether and the polyamide to commercialize the conductive polyamide / polyphenylene ether resin composition, and before the commercialization, the conductive filler is first charged and melted / kneaded with the polyphenylene ether, The dispersion can be improved and the conductivity can be improved, and the process is simplified and economical.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described in detail below. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. In addition, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Hereinafter, the conductive polyamide / polyphenylene ether resin composition of the present invention will be described.

The conductive polyamide / polyphenylene ether resin composition according to one embodiment is a thermoplastic resin composition comprising a compatibilized blend of polyphenylene ether and polyamide.

The conductive polyamide / polyphenylene ether resin composition comprises (a) a base resin comprising (a-1) polyphenylene ether and (a-2) polyamide, (b) an impact modifier, (c) And (d) a conductive filler comprising (d-1) carbon black or (d-2) carbon fibrils.

In the present invention, a compatibilized blend refers to a composition that is physically or chemically compatible with a compatibilizing agent.

Compatibility refers to the degree of commercialization. High compatibility means commercialization, and low compatibility means commercialization is difficult.

Hereinafter, each component of the conductive polyamide / polyphenylene ether resin composition according to one embodiment of the present invention will be described in detail.

(a) Basic resin

(a-1) polyphenylene ether

The polyphenylene ether (a-1) may be a polyphenylene ether polymer or a mixture of a polyphenylene ether polymer and a vinyl aromatic polymer, or a modified polyphenylene ether polymer in which a reactive monomer has reacted with a polyphenylene ether polymer, Two or more of these may be mixed and used.

Examples of the polyphenylene ether polymer include poly (2,6-dimethyl-1,4-phenylene) ether, poly (2,6- Ethyl-1,4-phenylene) ether, poly (2-methyl-6-propyl- (2,6-diphenyl-1,4-phenylene) ether, poly (2,6-dimethyl-1,4-phenylene) ) Ether and a poly (2,3,6-trimethyl-1,4-phenylene) ether, a copolymer of poly (2,6- Triethyl-1,4-phenylene) ether, may be used alone or in combination of two or more.

Among these, poly (2,6-dimethyl-1,4-phenylene) ether or poly (2,6-dimethyl- (Phenylene) ether is preferably used, and more preferably poly (2,6-dimethyl-1,4-phenylene) ether can be used.

As the vinyl aromatic polymer, a polymer obtained by polymerizing a vinyl aromatic monomer such as styrene, p-methylstyrene,? -Methylstyrene, or 4-n-propylstyrene is used. Of these, styrene and α- It is effective to polymerize monomers.

The reactive monomer is a compound containing an unsaturated carboxylic acid or its anhydride group or the like, or reacted with an unsaturated carboxylic acid or an anhydride group thereof to react with the polyphenylene ether polymer according to an embodiment of the present invention, Thereby forming a polyphenylene ether polymer.

The reactive monomer may be selected from the group consisting of citric acid, citric anhydride, maleic anhydride, maleic acid, itaconic anhydride, fumaric acid, (meth) acrylic acid, (meth) acrylic acid ester, and combinations thereof.

The method for producing the modified polyphenylene ether polymer reacted with the reactive monomer is not particularly limited, but it is effective to perform the graft reaction in the melt-kneaded state using the phosphite-based heat stabilizer in view of the relatively high working temperature.

The degree of polymerization of the polyphenylene ether according to one embodiment of the present invention is not particularly limited, but may have an intrinsic viscosity of 0.2 to 0.8 dl / g as measured in a chloroform solvent at 25 ° C.

In the case of having an intrinsic viscosity in the above range, it has excellent heat resistance and mechanical strength and is easy to process.

The content of the polyphenylene ether is preferably 10 to 65% by weight, more preferably 20 to 60% by weight, based on 100% by weight of the base resin including polyamide. When the content is in the above range, there is a problem that flexibility and chemical resistance are poor or processing is difficult.

(a-2) Polyamide

The polyamide has amino acid, lactam or diamine and dicarboxylic acid as main monomer components.

Representative examples of the main monomer component include amino acids such as 6-aminocaproic acid, 11-aminoundecanoic acid, 12-aminododecanoic acid, and paaminomethylbenzoic acid;慣 -caprolactam, ω-laurolactam; Tetramethylenediamine, hexamethylenediamine, 2-methylpentamethylenediamine, nonamethylenediamine, undecamethylenediamine, dodecamethylenediamine, 2,2,4- / 2,4,4-trimethylhexamethylenediamine, 5-methyl (Aminomethyl) cyclohexane, 1,4-bis (aminomethyl) cyclohexane, 1-amino-3-aminomethyl-3 , 5,5-trimethylcyclohexane, bis (4-aminocyclohexyl) methane, bis (3-methyl-4-aminocyclohexyl) methane, 2,2- Propyl) piperazine, aminoethylpiperazine, and other aliphatic, alicyclic, aromatic diamines; 2-methylterephthalic acid, 5-methylisophthalic acid, 5-sodium sulfoisophthalic acid, 2, 3-dodecanedioic acid, 2-ethylhexylphthalic acid, Naphthalene dicarboxylic acid, hexahydroterephthalic acid, hexahydroisophthalic acid, and the like, may be cited as the aromatic dicarboxylic acid. The polyamide homopolymer or copolymer derived from these raw materials may be used individually or in the form of a mixture.

Specific examples of the polyamide according to an embodiment of the present invention include polyamide 6, polyamide 66, polyamide 46, polyamide 11, polyamide 12, polyamide 610, polyamide 612, polyamide 6/66, poly Amide 6/612, polyamide MXD6, polyamide 6 / MXD6, polyamide 66 / MXD6, polyamide 6T, polyamide 6I, polyamide 6 / 6T, polyamide 6 / 6I, polyamide 66 / 6T, polyamide 66 / 6I, polyamide 6 / 6T / 6I, polyamide 66 / 6T / 6I, polyamide 9T, polyamide 9I, polyamide 6 / 9T, polyamide 6 / 9I, polyamide 66 / 9T, polyamide 6/12 / 9T, polyamide 66/12 / 9T, polyamide 6/12 / 9I or polyamide 66/12 / 6I may be used singly or two or more kinds may be mixed in an appropriate ratio.

The polyamide has a melting point of 220 to 360 캜, preferably 230 to 320 캜, more preferably 240 to 300 캜.

The polyamide preferably has a relative viscosity of 2 or more, preferably 2 to 4, in view of excellent mechanical properties and heat resistance of the resin composition. Here, the relative viscosity is a value measured at 25 DEG C by adding 1 wt% of polyamide to m-cresol.

The content of the polyamide is preferably 35 to 90% by weight, more preferably 40 to 80% by weight, based on 100% by weight of the base resin containing polyphenylene ether. If it is out of the above range, the mechanical properties and heat resistance may be inferior.

(b) Impact reinforcement ( Impact Modifier )

The impact modifier may function to improve the impact resistance of the thermoplastic resin composition.

As the impact modifier, a styrene-based elastomer or an olefin-based elastomer may be used, and a styrene-based elastomer and an olefin-based elastomer may be used in combination.

The impact modifier may include 1 to 30 parts by weight, preferably 5 to 20 parts by weight, and more preferably 6 to 15 parts by weight based on 100 parts by weight of the base resin.

(b-1) Styrene-based  Elastomer

Wherein the styrene-based elastomer is a block copolymer comprising an aromatic vinyl compound and a conjugated diene compound; A hydrogenated block copolymer obtained by hydrogenating a block copolymer comprising an aromatic vinyl compound and a conjugated diene compound; Modified block copolymer obtained by modifying said block copolymer with a compound selected from the group consisting of?,? -Unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives, and a modified block copolymer obtained by modifying said hydrogenated block copolymer with?,? A modified hydrogenated block copolymer modified with a compound selected from the group consisting of a carboxylic acid, an α, β-unsaturated dicarboxylic acid derivative, and the like. In some cases, two or more of them may be used in combination.

The aromatic vinyl compound may be styrene, p-methylstyrene,? -Methylstyrene, bromostyrene or chlorostyrene, and one or more of them may be combined. The most preferred embodiment here is styrene.

The styrenic elastomer is derived from an aromatic vinyl compound and its form is not only linear structure including diblock (AB block), triablock (ABA block), tetrablock (ABAB block) and pentablock And may include a linear structure containing a total of six or more A and B blocks.

Specific examples of the styrene elastomer include styrene-ethylene-butylene-styrene copolymer, styrene-butadiene-styrene copolymer, styrene-ethylene-propylene-styrene copolymer, styrene-isoprene-styrene copolymer, styrene- Styrene-ethylene-butadiene-styrene copolymer, and the modified styrene-ethylene-butadiene-styrene copolymer obtained by modifying each of the above-mentioned materials with a compound selected from the group of?,? -Unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives Modified styrene-butadiene-styrene copolymer modified with a compound selected from the group consisting of ethylene-butylene-styrene copolymer,?,? -Unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives, Modified styrene-ethylene-propylene-styrene copolymer modified with a compound selected from the group consisting of unsaturated dicarboxylic acid and?,? -Unsaturated dicarboxylic acid derivatives , modified styrene-isoprene-styrene copolymers obtained by modifying an α, β-unsaturated dicarboxylic acid and an α, β-unsaturated dicarboxylic acid derivative with a compound selected from the group consisting of α, β-unsaturated dicarboxylic acid and α, A modified styrene-ethylene copolymer or a modified styrene-ethylene-butadiene-styrene copolymer modified with a compound selected from the group of unsaturated dicarboxylic acid derivatives. It is also possible to use a mixture of two or more species depending on the case. A most preferred embodiment is a styrene-ethylene-butylene-styrene copolymer.

(b-2) Olefinic elastomer

The olefinic elastomer may be selected from the group consisting of high density polyethylene, low density polyethylene, linear low density polyethylene, ethylene -? - olefin copolymer, and a combination thereof. Further, each of the above-mentioned substances can be used by modifying it with at least one compound of an alpha, beta -unsaturated dicarboxylic acid or an alpha, beta -unsaturated dicarboxylic acid derivative, and the high density polyethylene can be used in combination with an alpha, beta -unsaturated dicarboxylic Modified high-density polyethylene modified with a compound selected from the group consisting of an acid, an?,? -Unsaturated dicarboxylic acid derivative and a low-density polyethylene is a compound selected from the group of?,? -Unsaturated dicarboxylic acid and?,? -Unsaturated dicarboxylic acid derivatives Denatured low-density polyethylene modified with a compound selected from the group consisting of?,? -Unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives, linear low-density polyethylene modified with ethylene-? -Olefin copolymer Is a modified ethylene -? - olefin copolymer obtained by modifying a compound selected from the group of?,? - unsaturated dicarboxylic acids and?,? - unsaturated dicarboxylic acid derivatives It may be a copolymer.

The olefin-based elastomer may be a copolymer of an olefin-based monomer or a copolymer of an olefin-based monomer and an acrylic monomer.

As the olefinic monomer, C1 to C19 alkylene may be used. Specific examples thereof include ethylene, propylene, isopropylene, butylene, isobutylene, and octene. These olefins may be used singly or in combination.

As the acrylic monomer, an alkyl (meth) acrylate or a (meth) acrylate may be used. Specific examples of the alkyl (meth) acrylate include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl Acrylate, and preferably methyl (meth) acrylate is effective.

The olefinic elastomer preferably includes a reactive group capable of reacting with the polyamide. The olefinic elastomer may have a structure in which a reactive group is grafted to a main chain composed of an olefinic monomer or a copolymer of an olefinic monomer and an acrylic monomer have.

The reactive group is effective for the maleic anhydride group or the epoxy group.

As preferred examples of the olefinic elastomer containing a reactive group, a modified ethylene -? - olefin copolymer or a modified low density polyethylene in which a maleic anhydride group is grafted is effective. This improves the compatibility of polyphenylene ether and polyamide.

Preferably, the impact modifier (b) may include a styrene elastomer (b-1) and an olefin elastomer (b-2) Styrene copolymers, styrene-butadiene-styrene copolymers, styrene-ethylene-propylene-styrene copolymers, styrene-isoprene-styrene copolymers, styrene-ethylene copolymers, styrene-ethylene-butadiene- - modified styrene-ethylene-butylene-styrene copolymers modified with a compound selected from the group of unsaturated dicarboxylic acids and?,? - unsaturated dicarboxylic acid derivatives,?,? - unsaturated dicarboxylic acids and?,? A modified styrene-butadiene-styrene copolymer modified with a compound selected from the group of dicarboxylic acid derivatives, a modified styrene-butadiene-styrene copolymer modified with a compound selected from the group of?,? -Unsaturated dicarboxylic acid and?,? -Unsaturated dicarboxylic acid derivatives A modified styrene-isoprene-styrene copolymer modified with a compound selected from the group consisting of modified styrene-ethylene-propylene-styrene copolymer,?,? -Unsaturated dicarboxylic acid and?,? -Unsaturated dicarboxylic acid derivatives,?,? - modified styrene-ethylene copolymers and?,? - unsaturated dicarboxylic acids and?,? - unsaturated dicarboxylic acid derivatives modified with a compound selected from the group of unsaturated dicarboxylic acids and?,? - unsaturated dicarboxylic acid derivatives Ethylene-butadiene-styrene copolymer obtained by modifying the olefin elastomer (b-2) with a compound selected from the group consisting of a high density polyethylene, a low density polyethylene, a linear low density polyethylene, an ethylene- -olefin copolymer, a denatured high-density resin modified with a compound selected from the group of?,? -unsaturated dicarboxylic acid and?,? -unsaturated dicarboxylic acid derivatives Polyethylene, modified low-density polyethylene modified with a compound selected from the group consisting of?,? -Unsaturated dicarboxylic acid and?,? -Unsaturated dicarboxylic acid derivatives,?,? -Unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid Modified linear low-density polyethylene modified with a compound selected from the group consisting of?,? - unsaturated dicarboxylic acids and?,? - unsaturated dicarboxylic acid derivatives, and a modified ethylene -? - olefin copolymer ≪ / RTI >

Alternatively, the styrene elastomer (b-1) may be a styrene-ethylene-butylene-styrene copolymer, a styrene-butadiene-styrene copolymer, a styrene-ethylene-propylene-styrene copolymer, a styrene- -Ethylene copolymer and a styrene-ethylene-butadiene-styrene copolymer, and the olefinic elastomer (b-2) is at least one selected from the group consisting of α, β-unsaturated dicarboxylic acid and α, Unsaturated dicarboxylic acid derivatives; modified low-density polyethylene obtained by modifying low-density polyethylene with a compound selected from the group of?,? -Unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives; Polyethylene, and linear low density polyethylene in combination with an alpha, beta -unsaturated dicarboxylic acid and an alpha, beta -unsaturated dicarboxylic acid derivative Modified ethylene /? - olefin copolymer obtained by modifying the modified linear low density polyethylene and the ethylene /? - olefin copolymer modified with a compound selected from the group of?,? - unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives Or a combination thereof.

(c) compatibilizer ( compatibilizer )

The compatibilizing agent may be a compound containing two types of functional groups, or a compound which is reacted to be modified with a compound containing two types of functional groups. One of the functional groups may be selected from a carbon-carbon double bond or a carbon-carbon triple bond and the other may be selected from a functional group of a carboxyl group, an acid anhydride, an epoxy group, an imide group, an amide group, an ester group, an acid chloride or a functional equivalent thereof. Specific examples of the compatibilizing agent may include maleic acid, maleic anhydride, fumaric acid, maleic acid hydrazide, dichloromaleic anhydride, unsaturated dicarboxylic acid, citric acid, malic acid and agaric acid. They can be mixed and used as occasion demands.

Preferred examples of the compatibilizing agent are maleic acid, maleic anhydride, fumaric acid, citric acid and citric acid anhydride, and in particular, maleic anhydride and citric acid anhydride are effective.

When the compatibilizing agent or the denaturant of the compatibilizer reacts with polyphenylene ether and polyamide, a polyphenylene ether and a polyamide block copolymer are produced.

The block copolymer is distributed in the interface between the two components in the polyamide / polyphenylene ether resin composition to stabilize the morphology of the resin composition. Particularly, when the polyphenylene ether forms a morphology in which a polyphenylene ether forms a domain (dispersed phase) and a polyamide forms a matrix (continuous phase) in a polyamide / polyphenylene ether resin composition, the particle diameter of the domain is controlled to be about 1 μm, (Polymer Engineering and Science, 1990, vol. 30, No. 17, pp. 1056-1062).

The compatibilizing agent may be added in an amount of 0.2 to 10 parts by weight based on 100 parts by weight of the base resin in the polyamide / polyphenylene ether resin composition. When the compatibilizing agent is less than 0.2 parts by weight, the effect of improving the impact strength is insignificant. When the compatibilizing agent is more than 10 parts by weight, the impact strength improving effect is not increased and other properties are lowered.

(d) Conductive filler ( electroconductive filler )

The conductive filler can impart conductivity to the polyamide / polyphenylene ether resin composition.

The conductive filler may be at least one of carbon black (d-1) or carbon fibril (d-2).

Carbon black (d-1) is conductive carbon black, and there is no limitation on its kind, but graphitized carbon, furnace black, acetylene black, and Ketjen black can be used. Carbon fibril (d-2) is a fibrous carbon material having a carbon element content of 90 wt% or more.

Among carbon fibrils, carbon nanotubes can be preferably used. Carbon nanotubes are effective materials for engineering plastics because they have a large aspect ratio and specific surface area and excellent mechanical, electrical and thermal properties.

Carbon nanotubes can be classified into single wall, double wall, and multiwall carbon nanotube depending on the number of walls. Zigzag, armchair, chiral And can be variously used without being limited to kinds and structures, but preferably multi-walled carbon nanotubes are effective.

The size of the carbon nanotubes is not particularly limited, but the diameter is 0.5 to 100 nm, preferably 1 to 10 nm, and the length is 0.01 to 100 탆, preferably 0.5 to 10 탆. The conductivity and workability are better in the diameter and the length range.

Also, the aspect ratio (L / D) of carbon nanotubes has a large value due to the above-mentioned size. When carbon nanotubes having L / D of 100 to 1,000 are used, the conductivity improving effect is excellent.

In addition, the conductive polyamide / polyphenylene ether resin composition may further contain additives such as a flame retardant, a lubricant, a plasticizer, a heat stabilizer, an antioxidant, a light stabilizer, a coloring agent or an inorganic filler. Or more.

The flame retardant is a material that reduces combustibility and may be a phosphate compound, a phosphite compound, a phosphonate compound, a polysiloxane, a phosphazene compound, a phosphinate compound or a melamine compound But it is not limited thereto.

The lubricant is a material that lubricates a metal surface that is in contact with the conductive polyamide / polyphenylene ether resin composition during processing, molding, and extrusion to aid flow or movement of the resin composition, and a commonly used material may be used.

The plasticizer may be a material that increases the flexibility, workability or extensibility of the conductive polyamide / polyphenylene ether resin composition, and may be a commonly used material.

The heat stabilizer is a material that inhibits thermal decomposition of the conductive polyamide / polyphenylene ether resin composition when kneaded or molded at a high temperature, and a commonly used material can be used.

The antioxidant is a substance that prevents the resin composition from being degraded to lose its inherent physical properties by inhibiting or blocking the chemical reaction between the conductive polyamide / polyphenylene ether resin composition and oxygen. Examples of the antioxidant include phenol type, phosphite type, thioether Type or amine-type antioxidant, but the present invention is not limited thereto.

The light stabilizer is a substance that inhibits or blocks the color change or loss of mechanical properties of the conductive polyamide / polyphenylene ether resin composition from ultraviolet rays, and titanium oxide may be used.

The colorant may be a pigment or a dye.

The additive may be included in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the base resin. If the additive is out of the range, the mechanical properties of the conductive polyamide / polyphenylene ether resin composition may deteriorate or appearance may be poor.

The conductive polyamide / polyphenylene ether resin composition having a constituent material and a content according to an embodiment of the present invention has excellent mechanical strength.

For the conductive polyamide / polyphenylene ether resin composition, the dart falling impact strength according to ASTM D3763 is preferably 30 to 80J, more preferably 35 to 65J.

Here, the dart drop impact strength means an average value of 20 times of the total energy measured by dropping the dart and impacting the dart drop impact tester.

If it has an energy value within the above range, it can exhibit optimum mechanical properties for application as a molded article.

Conventionally, most of the Izod impact strengths are measured for the thermoplastic resin composition. However, since Izod impact strength is suitable for isotropic metals, it has many defects in polymers. In the present invention, conductive polyamide / polyphenylene The impact resistance and mechanical properties of the ether resin composition can be accurately measured.

The thermoplastic resin composition such as the conductive polyamide / polyphenylene ether resin composition of the present invention impacts the specimen of the conductive polyamide / polyphenylene ether resin composition at a constant height due to the impact behavior due to the viscoelastic property depending on the price rate A method of obtaining total energy may be preferred.

In addition, the conductive polyamide / polyphenylene ether resin composition having a constituent material and a content according to an embodiment of the present invention is excellent in conductivity.

The conductive polyamide / polyphenylene ether resin composition preferably has a surface resistance value of 10 to 10 ¹¹ Ω / □, more preferably 10 ² to 10 ⁷ Ω / □. The conductivity of the conductive polyamide / polyphenylene ether resin composition is excellent when the surface resistance has a value within the above range.

The conductive polyamide / polyphenylene ether resin composition according to one embodiment of the present invention can be prepared by a known method. However, by using the above-described materials in the specific amounts for each constituent material, It is possible to realize a conductive polyamide / polyphenylene ether resin composition having excellent physical properties since it does not affect the formation of a commercialized blend even if it is added prior to the commercial use of phenylene ether and polyamide. Thus, And then melt-extruded in an extruder to prepare pellets.

Specifically, a conductive polyphenylene ether resin composition is formed by melt kneading polyphenylene ether, a compatibilizing agent, an impact modifier, and a conductive filler, and a polyamide is added to the polyphenylene ether resin composition to melt- Ether and a conductive polyamide / polyphenylene ether resin composition in which the polyamide is well-compatibilized can be prepared.

According to another embodiment of the present invention, a molded article for an automobile manufactured using the above-described conductive polyamide / polyphenylene ether resin composition can be provided. The conductive polyamide / polyphenylene ether resin composition is excellent in electrical conductivity and impact resistance and can be used for automobile parts such as automobile tailgate, automobile fuel door, automobile fender, and door panel, and its application range is not limited thereto .

[Example]

Hereinafter, the results of experiments conducted to demonstrate the excellent effects of the conductive polyamide / polyphenylene ether resin composition of the present invention are shown.

The constituent components used in the conductive polyamide / polyphenylene ether resin composition of the following examples and comparative examples are as follows.

(a) Basic resin

(a-1) Noryl PPO 646, a poly (2,6-dimethyl-1,4-phenylene) ether product of Sabic Innovative Plastics, was used.

(a-2) STABAMID 24 AE 1K, a product of Polyamide 66 of Rhodia, was used.

(b) impact modifier

(b-1) Styrene-based elastomer

KRATON G 1651, a styrene-ethylene-butylene-styrene copolymer (SEBS) product of KRATON polymers, was used.

(b-2) Olefinic elastomer

(b-2-1) Maleic anhydride-modified ethylene-propylene copolymer was used.

(b-2-2) Maleic anhydride-modified ethylene-octene copolymer was used.

(b-2-3) Maleic anhydride modified low density polyethylene was used.

(c) a compatibilizer

Citric acid anhydride from Sigma-Aldrich was used.

(d) Conductive filler

(d-2-1) HANOS MWCNT CM-150, a carbon nanotube product of Hanwha Chemical Co., Ltd., was used.

(d-2-2) NANOCYL NC7000, a carbon nanotube product of Nanocyl, was used.

(d-1) EC-600JD, a product of Akzo Nobel, carbon black (Ketjen Black) was used.

(e) Impact modifier / carbon black master batch

A master batch prepared by preliminarily melting / kneading the impact modifier (b-2-1) and the carbon black (d-1) at a weight ratio of 5: 1 was used.

The conductive polyamide / polyphenylene ether resin compositions of Examples and Comparative Examples were prepared in accordance with the ingredient content ratios described in Table 1 below.

Each component described in main supply of Table 1 was dry mixed and quantitatively introduced continuously into the main feeding port of a twin-screw extruder TEX-40 (manufactured by JSW). The components described in the side feed of Table 1 were melted / kneaded by quantitatively continuously feeding into a side feeding port of a twin-screw extruder. At this time, the screw rotation speed of the extruder was 400 rpm and the total production speed was about 100 kg per hour. Then, a pelletized resin composition was obtained through an extruder.

Here, the side supply port means a port located near the die of the extruder.

The basic resins a-1 and a-2 are 100 parts by weight in total, and the parts by weight are shown based on this.

Constituent Example Comparative Example One 2 4 One 2 3 4 main
supply a-1 37 37 32 37 37 37 37 b-1 6 6 5 6 6 6 6 b-2-1 5 - - 5 5 - - b-2-2 - 5 - - - - - b-2-3 - - 6 - - - - c 0.8 0.8 0.8 0.8 0.8 0.8 0.8 d-2-1 One 1.2 - - - One - d-2-2 - - One - - - - d-1 - - - One 3 - - e - - - - - - 6 side
supply a-2 63 63 68 63 63 63 63 b-2-1 - - - - - 5 -

Dart drop impact strength and surface resistance of the conductive polyamide / polyphenylene ether resin compositions of Examples 1 to 4 and Comparative Examples 1 to 4 were evaluated. Evaluation methods of evaluation items are as follows, and evaluation results are shown in Table 2 below.

<Dart drop impact strength evaluation>

Specimens of the conductive polyamide / polyphenylene ether resin composition prepared by injection molding were used for dart drop impact strength evaluation. An injection molding machine SELEX-TX150 (Woojin Cerex) equipped with a mold having a sample cavity of about 100 mm x 100 mm x 3 mm was used for injection molding. The temperature of the cylinder was about 280 DEG C and the temperature of the mold was about 80 DEG C Respectively.

The resin compositions of Examples 1 to 4 and Comparative Examples 1 to 4 were injection molded at an injection pressure of about 100 MPa, a pressure holding time of about 5 seconds, and a cooling time of about 20 seconds. 20 specimens were prepared. The injection molded specimens were conditioned for about 6 hours at a temperature of about 23 ° C and a relative humidity of about 50%.

Dart drop impact strength was measured by using a dart drop impact tester, Fractovis Plus (CEAST), according to ASTM D3763 for the conditionally adjusted specimens, and the total energy of the drop impact strength of dart at a temperature of about 23 ° C and a relative humidity of 50% ) Were measured.

The head darts having a diameter of 12.7 mm adjusted to a weight of 1 to 10 kg according to the impact strength of each resin composition were dropped from each resin composition specimen at a height of 1 m and the fracture of each resin composition specimen was measured using a measuring device connected to a dart drop impact tester Energy. The average value of the fracture energy obtained by measuring the measurement 20 times for each resin composition was regarded as the energy of the dart drop impact strength of each resin composition.

In addition, the broken shape of the specimen was observed by dart drop impact test, and the appearance of each resin composition specimen was observed as ductile and brittle.

&Lt; Evaluation of surface resistance &

Specimens for surface resistance measurements were prepared by compression molding. About 6 g of the conductive polyamide / polyphenylene ether resin composition pellets of Examples 1 to 4 and Comparative Examples 1 to 4 were placed in a mold having a cavity of 100 mm x 100 mm x 0.5 mm, And inserted into a thermal compression molding machine set at about 300 ° C. A pressure of about 50 kg / cm &lt; ² &gt; was applied to the mold and the metal plate for 3 minutes, then taken out of the thermal compression molding machine and inserted into a cold compression molding machine set at about 25 deg. A pressure of about 50 kg / cm &lt; ² &gt; was applied to the mold and the metal plate for 2 minutes, and then a sample of about 100 mm x 100 mm x 0.5 mm was taken out from the mold and the pair of metal plates Respectively. The compression molded specimen was conditioned for about 6 hours at a temperature of about 23 DEG C and a relative humidity of about 50%.

The surface resistances of the polyamide / polyphenylene ether resin compositions of Examples 1 to 4 and Comparative Examples 1 to 4 were measured using a resistance measuring system Hiresta-UP (manufactured by Mitsubishi Chemical Analytech Co., Ltd.) with a probe MCP-HTP14 MCP-HT450 was used in an environment having a temperature of about 23 DEG C and a relative humidity of 50%.

Example Comparative Example One 2 4 One 2 3 4 dart drop impact strength (J) 42 43 47 20 10 14 65 Broken form ductility ductility ductility Brittle Brittle Brittle ductility Surface resistance (Ω / □) 10 ^6.5 10 ⁶ 10 ⁴ 10 ¹³ 10 ¹⁰ 10 ¹² 10 ¹³

From the Tables 1 and 2, it can be seen that the pellets made from the conductive polyamide / polyphenylene ether resin composition according to Examples 1 to 4 have excellent mechanical properties, impact resistance and conductivity.

The resin compositions of Examples 1 to 4 prepared according to the components and the contents of the present invention are excellent in dart drop impact strength even if the carbon fibril conductive filler is first put into the main supply port and then kneaded with the polyamide injected into the side supply port , It was found that polyphenylene ether and polyamide were well commercialized.

In the case of Comparative Examples 1 and 2, the surface resistance was significantly higher than that of Examples, and the conductivity was significantly lowered. In addition, polyphenylene ether and polyamide were not compatibly used, resulting in low dart drop impact strength. It was found that the specimen was broken and mechanical properties were deteriorated.

Also, even when carbon fibril was added as the conductive filler as in Comparative Example 3, only the styrene elastomer was injected as the impact modifier into the main supply port to prepare a molten mixture of the polyphenylene ether resin composition, and then the olefin elastomer Of the impact modifier, the polyphenylene ether and the polyamide were not compatibly compatibilized with each other and the mechanical properties of the resin composition deteriorated.

This is because the conductive filler can be dispersed in the polyamide constituting the matrix in the polyamide / polyphenylene ether resin composition by injecting the olefinic elastomer into the main supply port. Therefore, the conductive polyamide / polyphenylene ether resin It was found that the melt-kneading method of each material is one of the important factors for obtaining the composition.

Further, in Comparative Example 4, even when the master batch in which the olefinic elastomeric impact modifier and the carbon black conductive filler were previously melted / kneaded was put into the main supply port, the surface resistance was high and the conductivity was inferior.

The scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms of embodiments within the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims (16)

As the conductive polyamide / polyphenylene ether resin composition,
(a) a base resin comprising (a-1) polyphenylene ether and (a-2) polyamide;
(b) impact modifiers;
(c) a compatibilizer; And
(d) a conductive filler comprising (d-1) carbon black or (d-2) carbon fibrils,
The conductive polyamide / polyphenylene ether resin composition comprises a conductive polyphenylene ether formed by melt kneading (a-1) a polyphenylene ether, (b) an impact modifier, (c) a compatibilizer, and (d) (A-2) a polyamide is added to the resin composition and melt-kneaded,
The dart drop impact strength according to ASTM D3763 was 30 to 80 J,
And a surface resistance of 10 to 10 &lt; ^6.5 &gt; / ^square. &Lt; / RTI &gt;
The method according to claim 1,
With respect to 100 parts by weight of the base resin (a)
The impact modifier (b) is 1 to 30 parts by weight,
The compatibilizer (c) is 0.2 to 10 parts by weight,
Wherein the conductive filler (d) is present in an amount of 0.1 to 3.5 parts by weight per 100 parts by weight of the conductive polyamide / polyphenylene ether resin composition.
The method according to claim 1,
Wherein the base resin (a) comprises 10 to 65% by weight of the polyphenylene ether (a-1) and 35 to 90% by weight of the polyamide (a-2) Resin composition.
The method according to claim 1,
Wherein the polyphenylene ether (a-1) is selected from the group consisting of poly (2,6-dimethyl-1,4-phenylene) ether, poly (2,6- Propylene-1,4-phenylene) ether, poly (2-methyl-6-ethyl- Ether, poly (2-ethyl-6-propyl-1,4-phenylene) ether, poly (2,6- (2,6-dimethyl-1,4-phenylene) ether and poly (2,3,6-trimethyl-1,4-phenylene) , 6-triethyl-1, 4-phenylene) ether. The conductive polyamide / polyphenylene ether resin composition according to claim 1,
The method according to claim 1,
The polyamide (a-2) may be selected from the group consisting of polyamide 6, polyamide 66, polyamide 46, polyamide 11, polyamide 12, polyamide 610, polyamide 612, polyamide 6/66, polyamide 6/612, poly Amide MXD6, polyamide 6 / MXD6, polyamide 66 / MXD6, polyamide 6T, polyamide 6I, polyamide 6 / 6T, polyamide 6 / 6I, polyamide 66 / 6T, polyamide 66 / / 6T / 6I, polyamide 66 / 6T / 6I, polyamide 9T, polyamide 9I, polyamide 6 / 9T, polyamide 6 / 9I, polyamide 66 / 9T, polyamide 6/12 / 9T, polyamide 66 / 12 / 9T, polyamide 6/12 / 9I or polyamide 66/12 / 6I.
The method according to claim 1,
Wherein the impact modifier (b) comprises at least one of (b-1) a styrene-based elastomer or (b-2) an olefin-based elastomer.
The method according to claim 6,
The styrene-based elastomer (b-1)
A hydrogenated block copolymer obtained by hydrogenating a block copolymer comprising an aromatic vinyl compound and a conjugated diene compound, a block copolymer comprising an aromatic vinyl compound and a conjugated diene compound, and a block copolymer obtained by adding the block copolymer to an?,? - unsaturated dicarboxylic acid a modified block copolymer modified with a compound selected from the group of?,? - unsaturated dicarboxylic acid derivatives, and a modified block copolymer obtained by modifying the hydrogenated block copolymer with an?,? -unsaturated dicarboxylic acid and an?,? - unsaturated dicarboxylic acid derivative And a modified hydrogenated block copolymer modified with a compound selected from the group consisting of a hydrogenated block copolymer and a modified polypropylene block copolymer.
The method according to claim 6,
The styrene-based elastomer (b-1)
Styrene-butadiene-styrene copolymers, styrene-ethylene-butylene-styrene copolymers, styrene-ethylene-butylene-styrene copolymers, styrene- A modified styrene-ethylene-butylene-styrene copolymer obtained by modifying these with a compound selected from the group of?,? -Unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives, modified styrene-butadiene-styrene copolymer At least one selected from the group consisting of modified styrene-ethylene-propylene-styrene copolymers, modified styrene-isoprene-styrene copolymers, modified styrene-ethylene copolymers and modified styrene-ethylene-butadiene-styrene copolymers By weight based on the total weight of the conductive polyamide / polyphenylene ether resin composition.
The method according to claim 6,
The olefin elastomer (b-2)
High density polyethylene, low density polyethylene, linear low density polyethylene, ethylene -? - olefin copolymer, modified high density polyethylene obtained by modifying these with a compound selected from the group of?,? - unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives , Modified low-density polyethylene, modified linear low-density polyethylene, and modified ethylene -? - olefin copolymer.
The method according to claim 1,
The conductive polyamide / polyphenylene ether resin composition according to claim 1, wherein the impact modifier (b) comprises (b-1) a styrene-based elastomer and (b-2) an olefin-based elastomer.
11. The method of claim 10,
The styrene-based elastomer (b-1) may be a styrene-ethylene-butylene-styrene copolymer, a styrene-butadiene- A styrene-ethylene-butadiene-styrene copolymer obtained by modifying each of these with a compound selected from the group consisting of?,? -Unsaturated dicarboxylic acid and?,? - unsaturated dicarboxylic acid derivatives, Styrene copolymers, modified styrene-butadiene-styrene copolymers, modified styrene-ethylene-propylene-styrene copolymers, modified styrene-isoprene-styrene copolymers, modified styrene-ethylene copolymers and modified styrene- And at least one selected from the group consisting of
The olefinic elastomer (b-2) is at least one member selected from the group consisting of high-density polyethylene, low-density polyethylene, linear low-density polyethylene, ethylene-alpha-olefin copolymer and their copolymers of alpha, beta -unsaturated dicarboxylic acid and alpha, beta -unsaturated dicarboxylic acid Wherein the conductive polyamide / polyphenylene ether resin is at least one selected from the group consisting of modified high-density polyethylene modified with a compound selected from the group consisting of modified low-density polyethylene, modified linear low-density polyethylene, and modified ethylene -? - olefin copolymer Composition.
11. The method of claim 10,
The styrene-based elastomer (b-1) may be a styrene-ethylene-butylene-styrene copolymer, a styrene-butadiene- Copolymer and styrene-ethylene-butadiene-styrene copolymer,
The olefinic elastomer (b-2) is obtained by copolymerizing a high-density polyethylene, a low-density polyethylene, a linear low-density polyethylene and an ethylene -olefin copolymer in the presence of an?,? -Unsaturated dicarboxylic acid and a group of?,? - unsaturated dicarboxylic acid derivatives Wherein the conductive polyamide / polyphenylene ether resin composition is at least one selected from the group consisting of modified high density polyethylene modified with a compound selected from the group consisting of modified low density polyethylene, modified low density polyethylene, and modified ethylene -? - olefin copolymer .
delete The method according to claim 1,
The base resin (a) comprises 10 to 65% by weight of the polyphenylene ether (a-1) and 35 to 90% by weight of the polyamide (a-2)
With respect to 100 parts by weight of the base resin (a)
The impact modifier (b) is 1 to 30 parts by weight,
The compatibilizer (c) is 0.2 to 10 parts by weight,
Wherein the conductive filler (d) is present in an amount of 0.1 to 3.5 parts by weight per 100 parts by weight of the conductive polyamide / polyphenylene ether resin composition.
14. A molded article for a vehicle produced from the conductive polyamide / polyphenylene ether resin composition according to any one of claims 1 to 12 and 14.
(a) a polyphenylene ether; (b) an impact modifier; (c) a compatibilizing agent; and (d) a conductive filler to prepare a conductive polyphenylene ether resin composition; And
(A-2) adding a polyamide to the conductive polyphenylene ether resin composition and melting and kneading the mixture,
The dart drop impact strength according to ASTM D3763 is 30 to 80 J,
Surface resistance of the conductive polyamide / polyphenylene ether resin composition in the production method according to claim 10 to 10 ^6.5 Ω / □ in.