Polyarylene sulfide resin composition, molded article, and composite, and methods for producing the same

Abstract

To provide a resin composition, a molded article, and a composite, and methods for producing the same, which exhibit excellent conductivity and toughness and additionally possess high flame retardancy and cold thermal shock resistance.SOLUTION: There are provided a polyarylene sulfide (PAS) resin composition comprising, as essential components, a PAS resin, a carbon-based nanomaterial, and a silicone-based elastomer, wherein, with respect to 100 pts.mass of the PAS resin, the carbon-based nanomaterial is 0.1 to 2 pts.mass and the silicone-based elastomer is 3 to 25 pts.mass, and the silicone-based elastomer is of a core-shell type, and a molded article and a composite comprising the PAS resin composition, and methods for producing the same.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a polyarylene sulfide resin composition, a molded article, a composite, and methods for producing the same. [Background technology]

[0002] In recent years, with the promotion of vehicle electrification and the spread of renewable energy, demand for secondary batteries, such as lithium-ion batteries (LiBs), has been increasing. Electrode components for secondary batteries must have appropriate conductivity, minimal conductivity variation, toughness, reliability in terms of quality and durability during long-term use, and safety.

[0003] On the other hand, polyarylene sulfide (hereinafter sometimes abbreviated as PAS) resins, such as polyphenylene sulfide (hereinafter sometimes abbreviated as PPS) resins, are widely used mainly in electrical and electronic equipment parts, automotive parts materials, etc., because of their excellent mechanical strength, heat resistance, chemical resistance, moldability, dimensional stability, and flame retardancy.

[0004] Since PAS resin is an insulating material, it needs to be made conductive in order to be used in the anode safety components of secondary batteries. The most common method is to compound it with conductive materials such as carbon fiber or carbon black. Furthermore, since it is used in conjunction with metal components, it needs to have high toughness to ensure adhesion. Furthermore, a material with excellent mechanical strength and resistance to temperature changes is also required.

[0005] As an example of a PAS resin composition that has been blended with a conventional conductive material to improve toughness, Patent Document 1 discloses a PPS resin composition containing a PAS resin, graphite, carbon fiber, and polyolefin wax. Patent Document 2 discloses a resin composition blending a PAS resin, carbon nanotubes or carbon nanostructures, and an olefin copolymer. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-19227 [Patent Document 2] International Publication No. 2023 / 008417 Brochure Summary of the Invention [Problem to be solved by the invention]

[0007] However, when the toughness of a resin composition is improved using such a composition, there is a problem with flame retardancy. Therefore, in order to maintain the required flame retardancy, the thickness of the part must be increased, which limits design freedom. In addition, there is room for improvement in thermal shock resistance.

[0008] Therefore, the problem to be solved by the present invention is to provide a resin composition, a molded article, and a resin-metal composite having excellent electrical conductivity and toughness, and high flame retardancy and thermal shock resistance, as well as methods for producing the same. [Means for solving the problem]

[0009] As a result of extensive research aimed at solving the above problems, the inventors discovered that when a core-shell type silicone elastomer is blended in a specific ratio, a PAS resin composition exhibits excellent toughness and flame retardancy, leading to the completion of the present invention.

[0010] That is, the present disclosure provides a PAS resin composition comprising a PAS resin (A), a carbon-based nanomaterial (B), and a silicone-based elastomer (C) as essential components, the carbon-based nanomaterial (B) is 0.1 to 2 parts by mass and the silicone-based elastomer (C) is 3 to 25 parts by mass relative to 100 parts by mass of the PAS resin (A); The present invention relates to a PAS resin composition, wherein the silicone elastomer (C) is a core-shell type.

[0011] The present disclosure also relates to a molded article obtained by melt molding the above-described PAS resin composition.

[0012] The present disclosure also relates to a composite member obtained by joining the above-described molded article and a metal member.

[0013] The present disclosure also provides a method for producing a PAS resin composition, comprising a step of blending a PAS resin (A), a carbon-based nanomaterial (B), and a silicone-based elastomer (C) as essential components, and melt-kneading the resulting mixture at a temperature equal to or higher than the melting point of the PAS resin (A), the carbon-based nanomaterial (B) is 0.1 to 2 parts by mass and the silicone-based elastomer (C) is 1 to 20 parts by mass relative to 100 parts by mass of the PAS resin (A); The present invention relates to a method for producing a PAS resin composition, wherein the silicone elastomer (C) is a core-shell type.

[0014] The present disclosure also relates to a method for producing a molded article, comprising the steps of producing a PAS resin composition by the above-described method and melt-molding the obtained PAS resin composition.

[0015] The present disclosure also relates to a method for producing a composite, comprising the steps of producing a molded article by the above-described method and joining the obtained molded article to a metal member.

[0016] The present disclosure also relates to a method of using the composite described above in a conductive member. [Effects of the Invention]

[0017] According to the present invention, it is possible to provide a resin composition, a molded article, and a composite having excellent electrical conductivity and toughness, as well as high flame retardancy and thermal shock resistance, and methods for producing the same. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, embodiments of the present invention will be described in detail. However, the scope of the present invention is not limited to the embodiments described herein, and various modifications can be made without departing from the spirit of the present invention. Further, when a plurality of upper limit values and lower limit values are described for specific parameters, any upper limit value and lower limit value can be combined to form a suitable numerical range.

[0019] The PAS resin composition according to this embodiment is a PAS resin composition prepared by blending a PAS resin (A), a carbon-based nanomaterial (B), and a silicone-based elastomer (C) as essential components. With respect to 100 parts by mass of the PAS resin (A), the carbon-based nanomaterial (B) is 0.1 to 2 parts by mass, and the silicone-based elastomer (C) is 3 to 25 parts by mass. The silicone-based elastomer (C) is of a core-shell type. The following will be described.

[0020] <PAS resin (A)> The PAS resin composition according to this embodiment is prepared by blending a PAS resin (A) as an essential component.

[0021] The PAS resin has a resin structure having a structure in which an aromatic ring and a sulfur atom are bonded as a repeating unit. Specifically, the following general formula (I)

[0022]

Chemical formula

[0023] ,

[0021] , 2 , , , <00001​​​​​​​​​​​The resin has a trifunctional structural moiety represented by formula (2) and a repeating unit represented by formula (3). The trifunctional structural moiety represented by formula (2) is preferably present in an amount of 0.001 to 3 mol %, and particularly preferably in an amount of 0.01 to 1 mol %, based on the total number of moles of the trifunctional structural moiety and other structural moieties.

[0024] Here, the structural moiety represented by the general formula (1) is particularly R 1 and R 2 is preferably a hydrogen atom from the viewpoint of the mechanical strength of the PAS resin, and in that case, examples include those bonded at the para position represented by the following formula (3) and those bonded at the meta position represented by the following formula (4).

[0025] [ka] Among these, a structure in which the bond between the sulfur atom and the aromatic ring in the repeating unit is at the para position represented by the general formula (3) is particularly preferred in terms of the heat resistance of the PAS resin.

[0026] The PAS resin may contain not only the structural moieties represented by the general formulas (1) and (2) but also the structural moieties represented by the following structural formulas (5) to (8):

[0027] [ka] The structural moieties represented by the general formula (1) and the general formula (2) may be contained in an amount of 30 mol % or less of the total of the structural moieties represented by the general formula (1) and the general formula (2). In particular, in the present disclosure, it is preferable that the structural moieties represented by the general formulas (5) to (8) be 10 mol % or less from the viewpoint of the heat resistance and mechanical strength of the PAS. When the structural moieties represented by the general formulas (5) to (8) are contained in the PAS resin, the bonding mode thereof may be either a random copolymer or a block copolymer.

[0028] The PAS resin may also have naphthyl sulfide bonds or the like in its molecular structure, but the amount is preferably 3 mol % or less, and particularly preferably 1 mol % or less, of the total number of moles including other structural moieties.

[0029] The physical properties of the PAS resin (A) are not particularly limited as long as they do not impair the effects of the present invention, but are as follows.

[0030] (melt viscosity) The melt viscosity of the PAS resin (A) used in this embodiment is not particularly limited, but the melt viscosity (V6) measured at 300°C is preferably 1 to 200 Pa·s, more preferably 5 to 150 Pa·s, and even more preferably 10 to 120 Pa·s, in order to achieve a good balance between processability and toughness. The melt viscosity (V6) is measured using a flow tester, CFT-500D, manufactured by Shimadzu Corporation, at 300°C and a load of 1.96×10 6 The melt viscosity is measured after holding the sample at a pressure of 10 Pa and L / D=10 (mm) / 1 (mm) for 6 minutes.

[0031] (carboxyl group content) The carboxyl group content of the PAS resin (A) used in this embodiment is not particularly limited, but from the viewpoint of reactivity with the silicone-based elastomer (C), it is preferably in the range of 10 to 200 μmol / g or less, more preferably in the range of 20 to 180 μmol / g, and even more preferably in the range of 40 to 180 μmol / g. Within this range, the silicone-based elastomer (C) is well dispersed in the PAS resin (A) in the resin composition, resulting in excellent toughness and impact resistance. In this disclosure, the carboxyl group content is a value measured by the method described in the Examples.

[0032] (Non-Newtonian exponents) The non-Newtonian index of the PAS resin (A) used in this embodiment is not particularly limited, but is preferably in the range of 0.90 or more and 2.00 or less. When a linear PAS resin is used, the non-Newtonian index is preferably in the range of 0.90 or more, more preferably 0.95 or more, and preferably 1.50 or less, more preferably 1.20 or less. Such PAS resins have excellent mechanical strength and fluidity. However, in this disclosure, the non-Newtonian index (N value) is a value calculated using the following formula after measuring the shear rate (SR) and shear stress (SS) using a capillograph under conditions of a melting point of +20°C and an orifice length (L) to orifice diameter (D) ratio of L / D = 40. The closer the non-Newtonian index (N value) is to 1, the more linear the structure, and the higher the non-Newtonian index (N value), the more branched the structure.

[0033]

number

[0034] (Manufacturing method) Methods for producing the PAS resin include, but are not limited to, (Production Method 1) polymerization of a dihalogenoaromatic compound in the presence of sulfur and sodium carbonate, optionally with a polyhalogenoaromatic compound or other copolymerization component; (Production Method 2) polymerization of a dihalogenoaromatic compound in a polar solvent, optionally with a polyhalogenoaromatic compound or other copolymerization component, in the presence of a sulfidizing agent or the like; (Production Method 3) self-condensation of p-chlorothiophenol, optionally with other copolymerization components; and (Production Method 4) melt polymerization of a diiodoaromatic compound and elemental sulfur under reduced pressure in the presence of a polymerization inhibitor that may have a functional group such as a carboxyl group or an amino group. Among these methods, (Production Method 2) is preferred for its general utility. During the reaction, alkali metal salts of carboxylic acids or sulfonic acids or alkali hydroxides may be added to adjust the degree of polymerization. Among the above-mentioned (Production Method 2) methods, there is a method for producing a PAS resin by adding a water-containing sulfidizing agent to a mixture containing a heated organic polar solvent and a dihalogeno aromatic compound at a rate at which water can be removed from the reaction mixture, and then adding the dihalogeno aromatic compound and the sulfidizing agent, and optionally a polyhalogeno aromatic compound, in the organic polar solvent to react with each other, and controlling the amount of water in the reaction system to be in the range of 0.02 to 0.5 moles per mole of the organic polar solvent (see JP-A-07-228699). Particularly preferred is a compound obtained by a method in which a dihalogenoaromatic compound and, if necessary, a polyhalogenoaromatic compound or other copolymerization component are added in the presence of an alkali metal sulfide and an aprotic polar organic solvent, and an alkali metal hydrosulfide and an organic acid alkali metal salt are reacted while controlling the amount of organic acid alkali metal salt in the range of 0.01 to 0.9 mol per mol of the sulfur source and the amount of water in the reaction system to 0.02 mol or less per mol of the aprotic polar organic solvent (see WO2010 / 058713 pamphlet).Specific examples of dihalogenoaromatic compounds include p-dihalobenzene, m-dihalobenzene, o-dihalobenzene, 2,5-dihalotoluene, 1,4-dihalonaphthalene, 1-methoxy-2,5-dihalobenzene, 4,4'-dihalobiphenyl, 3,5-dihalobenzoic acid, 2,4-dihalobenzoic acid, 2,5-dihalonitrobenzene, 2,4-dihalonitrobenzene, 2,4-dihaloanisole, p,p'-dihalodiphenyl ether, 4,4'-dihalobenzophenone, 4,4'-di Examples of the polyhalogenoaromatic compounds include 1,2,3-trihalobenzene, 1,2,4-trihalobenzene, 1,3,5-trihalobenzene, 1,2,3,5-tetrahalobenzene, 1,2,4,5-tetrahalobenzene, 1,4,6-trihalonaphthalene, etc. The halogen atoms contained in the above compounds are preferably chlorine atoms or bromine atoms.

[0035] The method for post-treating the reaction mixture containing the PAS resin obtained by the polymerization step is not particularly limited, and examples thereof include (post-treatment 1) a method in which, after the polymerization reaction is completed, the solvent is first distilled off under reduced pressure or normal pressure either as is or after adding an acid or base, and then the solid obtained after the solvent distillation is washed once or twice or more times with a solvent such as water, the reaction solvent (or an organic solvent having a similar solubility to the low-molecular-weight polymer), acetone, methyl ethyl ketone, or alcohols, followed by neutralization, washing with water, filtration, and drying; or (post-treatment 2) a method in which, after the polymerization reaction is completed, the reaction mixture is treated with a solvent such as water, acetone, methyl ethyl ketone, alcohols, ethers, halogenated hydrocarbons, aromatic hydrocarbons, or aliphatic hydrocarbons (soluble in the polymerization solvent used and poorly soluble in at least PAS). Examples of post-treatment methods include adding a solvent (or an organic solvent with equivalent solubility to the low-molecular-weight polymer) as a precipitant to precipitate solid products such as PAS and inorganic salts, which are then filtered, washed, and dried; (post-treatment 3) adding the reaction solvent (or an organic solvent with equivalent solubility to the low-molecular-weight polymer) to the reaction mixture after the polymerization reaction is complete, stirring, filtering to remove the low-molecular-weight polymer, washing once or twice with a solvent such as water, acetone, methyl ethyl ketone, or alcohols, followed by neutralization, washing with water, filtering, and drying; (post-treatment 4) adding water to the reaction mixture after the polymerization reaction is complete, washing with water, filtering, optionally adding an acid during the water washing, and then drying; and (post-treatment 5) filtering the reaction mixture after the polymerization reaction is complete, washing once or twice or twice with the reaction solvent if necessary, followed by further washing with water, filtering, and drying. Among these methods, (post-treatment 4) is preferred because it yields a PAS resin having carboxyl groups at the molecular terminals.

[0036] In the post-treatment methods exemplified above as (Post-treatment 1) to (Post-treatment 5), the PAS resin may be dried in a vacuum, in air, or in an inert gas atmosphere such as nitrogen.

[0037] In the PAS resin composition according to the present embodiment, the blending amount of the PAS resin (A) is preferably 30 to 80 parts by mass, more preferably 40 to 70 parts by mass, per 100 parts by mass of the resin composition, which is preferable because the resin composition has good processability and the molded article has excellent chemical resistance, toughness, etc.

[0038] The PAS resin (A) used in this embodiment can be a PAS resin newly polymerized by the above-described method, or a recycled PAS resin. For example, PAS resin recovered from a PAS resin composition or a PAS resin molded article can be used. Specifically, a PAS resin obtained by heating a PAS resin composition or a PAS resin molded article in an organic polar solvent to dissolve the PAS contained therein and then performing the above-described post-treatment can be used. Mechanically pulverized PAS resin compositions or PAS resin molded articles can also be used. Specifically, sprues or runners generated during the production of molded articles, recovered non-standard molded articles, or pulverized molded articles once used as products can be used. In this case, pulverized PAS resin compositions or PAS resin molded articles containing components other than PAS resin can also be used. However, from the perspective of mechanical strength, the PAS resin content is preferably 90 parts by mass or more, more preferably 95 parts by mass or more, and even more preferably 98 parts by mass or more.

[0039] <Carbon-based nanomaterials (B)> The PAS resin composition according to this embodiment contains a carbon-based nanomaterial (B) as an essential component for the purpose of imparting electrical conductivity to a molded article.

[0040] In this disclosure, the term "carbon-based nanomaterial (B)" refers to a structure containing multiple carbon nanotubes (CNTs) bonded together. CNTs have a cylindrical shape formed by rolling one surface of graphite. Examples of CNTs include single-walled nanotubes (SWNTs) with a single-layer structure and multi-walled nanotubes (MWNTs) with two or more layers, and any of these can be used in this embodiment. Furthermore, CNTs can generally be produced by laser ablation, arc thermal CVD, plasma CVD, gas-phase methods, combustion methods, or the like, but CNTs produced by any method are acceptable.

[0041] The carbon-based nanomaterial (B) used in this embodiment may be surface-treated, and may be, for example, treated with an isocyanate compound, an organic silane compound, an organic titanate compound, or an epoxy compound. Among these, from the viewpoint of electrical conductivity stability, isocyanate compounds and organic silane compounds are preferred, and organic silane compounds are particularly preferred.

[0042] The size of the carbon-based nanomaterial (B) applicable to this embodiment is preferably 0.1 to 50 nm, more preferably 0.1 to 30 nm, in terms of average fiber diameter, in which case the balance between dispersibility and conductivity is excellent.

[0043] Examples of commercially available products of such carbon-based nanomaterials (B) include "ATHLOS (registered trademark) 200" and "ATHLOS (registered trademark) 100" manufactured by CABOT Corporation.

[0044] In the PAS resin composition according to this embodiment, the blending amount of the carbon-based nanomaterial (B) is 0.1 to 2 parts by mass, preferably 0.1 to 1 part by mass, per 100 parts by mass of the PAS resin (A). This range is preferable because the resin composition has good processability and the molded article has excellent electrical conductivity, mechanical strength, and dimensional stability.

[0045] <Silicone elastomer (C)> The PAS resin composition according to this embodiment contains a silicone elastomer (C) as an essential component.

[0046] The silicone elastomer (C) applicable to this embodiment is a core-shell elastomer. The core-shell elastomer refers to a multilayer elastomer having a core layer and a shell layer covering part or all of the core layer, and is a core-shell graft copolymer in which a copolymerizable monomer component is graft-copolymerized to form the shell layer. An intermediate layer may be present between the core layer and the shell layer.

[0047] The silicone-based elastomer (C) used in the present disclosure preferably has a core layer formed from a silicone rubber component and a shell layer formed from a polymer component containing a reactive functional group, the polymer component being composed of a monomer component copolymerizable with the core layer, and the reactive functional group is preferably an epoxy group. The reactive functional group in the shell layer is reactive with the PAS resin, which allows the elastomer to have excellent dispersibility in the matrix. By incorporating a silicone-based elastomer (C) having such a structure, it is possible to impart heat cycle resistance to molded articles while maintaining flame retardancy.

[0048] Examples of silicone rubber components include siloxane rubber polymers such as polydimethylsiloxane, polymethylphenylsiloxane, and polydimethylsiloxane-diphenylsiloxane copolymers, and polyorganohydrogensiloxanes in which some of the side-chain alkyl groups have been substituted with hydrogen atoms. The weight-average molecular weight of the silicone rubber component is not particularly limited, but is preferably 100,000 to 1,000,000, and more preferably 150,000 to 500,000. The weight-average molecular weight can be measured using a standard polystyrene equivalent determined by gel permeation chromatography (GPC) analysis. The core layer formed by the silicone rubber component preferably comprises 40 parts by mass or more, more preferably 60 parts by mass or more, per 100 parts by mass of elastomer.

[0049] In the polymer component having a reactive functional group that constitutes the shell layer, the reactive functional group is preferably one that reacts with the PAS resin, and examples thereof include polymers having an epoxy group, an amino group, a hydroxyl group, a carboxyl group, a mercapto group, an isocyanate group, an oxazoline group, and a group represented by the formula: R(CO)O(CO)- or R(CO)O- (wherein R represents an alkyl group having 1 to 8 carbon atoms). Polymers having such functional groups can be obtained, for example, by copolymerizing an α-olefin with a vinyl polymerizable compound having the functional group. Examples of the α-olefin include α-olefins having 2 to 8 carbon atoms, such as ethylene, propylene, and butene-1. Examples of the vinyl polymerizable compound having the functional group include α,β-unsaturated carboxylic acids and their alkyl esters, such as (meth)acrylic acid and (meth)acrylic acid esters; maleic acid, fumaric acid, itaconic acid, and other α,β-unsaturated dicarboxylic acids having 4 to 10 carbon atoms and their derivatives (mono- or diesters, and acid anhydrides thereof); and glycidyl (meth)acrylate. Among these, glycidyl methacrylate is preferred. These components may be used alone or in combination of two or more. In the present disclosure, (meth)acrylic refers to acrylic and / or methacrylic.

[0050] In the PAS resin composition according to this embodiment, the amount of silicone elastomer (C) blended is 1 to 25 parts by mass, preferably 2 to 20 parts by mass, per 100 parts by mass of PAS resin (A). This range is preferred because the resin composition has good processability and the molded article has excellent conductivity, mechanical strength, and dimensional stability. The silicone elastomer (C) may be used alone or in combination of two or more types.

[0051] <Fiber filler (D)> The PAS resin composition according to this embodiment may further contain a fibrous filler (D) as an optional component for the purpose of improving mechanical strength.

[0052] The fibrous filler (D) applicable to this embodiment is not particularly limited, and known materials can be used. For example, fibrous fillers such as glass fiber, carbon fiber, silane glass fiber, ceramic fiber, aramid fiber, metal fiber, potassium titanate, silicon carbide, calcium silicate, wollastonite, and natural fibers can be used.

[0053] The fibrous filler (D) can also be treated with a surface treatment agent or a sizing agent, if necessary. This is preferable because it improves adhesion to the PAS resin (A) and improves the mechanical strength of the resulting resin composition and molded article. Examples of the surface treatment agent or sizing agent include at least one polymer selected from the group consisting of silane compounds having functional groups such as amino groups, epoxy groups, isocyanate groups, and vinyl groups, titanate compounds, acrylic resins, urethane resins, polyether resins, and epoxy resins. In particular, when glass fibers are used, a urethane resin is preferred in order to prevent excessive fiber defibration during processing. When the surface treatment agent or sizing agent contains a urethane resin, its content is not particularly limited, but is preferably 35% by mass or less, and more preferably 20% by mass or less, in terms of moist heat resistance, etc.

[0054] When the fibrous filler (D) is blended into the PAS resin composition according to the present embodiment, the blending amount is not particularly limited, but is preferably 10 to 120 parts by mass, more preferably 30 to 100 parts by mass, per 100 parts by mass of the PAS resin (A). This range is preferable because the resin composition has good processability and the molded article has excellent mechanical strength.

[0055] The PAS resin composition according to this embodiment can further contain a silane coupling agent as an optional component for the purpose of improving mechanical strength and reducing burrs during molding. The silane coupling agent that can be used in this embodiment is not particularly limited as long as it does not impair the effects of the present invention, but preferred examples include silane coupling agents having a functional group that reacts with a carboxyl group, such as an epoxy group, an isocyanato group, an amino group, or a hydroxyl group. Examples of such silane coupling agents include epoxy group-containing alkoxysilane compounds such as γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, and β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane; isocyanato group-containing alkoxysilane compounds such as γ-isocyanatopropyltrimethoxysilane, γ-isocyanatopropyltriethoxysilane, γ-isocyanatopropylmethyldimethoxysilane, γ-isocyanatopropylmethyldiethoxysilane, γ-isocyanatopropylethyldimethoxysilane, γ-isocyanatopropylethyldiethoxysilane, and γ-isocyanatopropyltrichlorosilane; amino group-containing alkoxysilane compounds such as γ-(2-aminoethyl)aminopropylmethyldimethoxysilane, γ-(2-aminoethyl)aminopropyltrimethoxysilane, and γ-aminopropyltrimethoxysilane; and hydroxyl group-containing alkoxysilane compounds such as γ-hydroxypropyltrimethoxysilane and γ-hydroxypropyltriethoxysilane.

[0056] In this embodiment, the silane coupling agent is not an essential component, but when used, its amount is not particularly limited as long as it does not impair the effects of the present invention. For example, the amount is preferably 0.01 part by mass or more, more preferably 0.1 part by mass or more, and preferably 10 parts by mass or less, more preferably 5 parts by mass or less, per 100 parts by mass of the PAS resin (A). This range is preferable because the resin composition has good moldability, particularly releasability, and the molded article exhibits excellent adhesion to the epoxy resin while also improving mechanical strength.

[0057] The PAS resin composition according to this embodiment may contain fillers (hereinafter referred to as "other fillers") other than the carbon-based nanomaterial (B) and fibrous filler (D) described above as optional components, provided that the effects of the present invention are not impaired. Examples of such fillers include fillers of various shapes, such as plate-like and granular. Specific examples include glass flakes, clay, pyrophyllite, bentonite, sericite, mica, attapulgite, ferrite, calcium silicate, zeolite, boehmite, silica, quartz powder, glass beads, glass powder, silicates such as calcium silicate, aluminum silicate, and diatomaceous earth, metal oxides such as iron oxide, titanium oxide, zinc oxide, and alumina, metal carbonates such as calcium carbonate and magnesium carbonate, metal sulfates such as calcium sulfate and barium sulfate, fumed silica, silicon carbide, silicon nitride, boron nitride, various metal powders, and plant-derived fillers such as cocoa husk.

[0058] In this embodiment, other fillers are not essential components, but when they are added, the amount of addition is not particularly limited as long as it does not impair the effects of the present invention. The amount of addition of other fillers is, for example, preferably 1 part by mass or more, more preferably 5 parts by mass or more, to preferably 600 parts by mass or less, more preferably 200 parts by mass or less, per 100 parts by mass of the PAS resin (A). This range is preferable because the resin composition exhibits good moldability and the molded product has excellent mechanical strength.

[0059] In addition to the above components, the PAS resin composition of this embodiment may further contain, as an optional component, synthetic resins such as polyester resins, polyamide resins, polyimide resins, polyetherimide resins, polycarbonate resins, polyphenylene ether resins, polysulfone resins, polyethersulfone resins, polyetheretherketone resins, polyetherketone resins, polyarylate resins, polyethylene resins, polypropylene resins, polyethylenetetrafluoroethylene resins, polyethylenedifluoroethylene resins, polystyrene resins, ABS resins, epoxy resins, phenolic resins, urethane resins, and liquid crystal polymers, depending on the intended use. In particular, the incorporation of fluorine-based resins is preferred because it further improves sliding properties. While the synthetic resin is not an essential component of the present invention, if incorporated, its proportion is not particularly limited as long as it does not impair the effects of the present invention. Furthermore, the proportion of synthetic resin incorporated into the resin composition of this embodiment varies depending on the intended purpose and cannot be generally defined. However, the proportion of synthetic resin incorporated into the resin composition of this embodiment may be, for example, in the range of 5 parts by mass or more and 15 parts by mass or less per 100 parts by mass of the PAS resin (A). In other words, the ratio of the PAS resin to the total of the PAS resin (A) and the synthetic resin is preferably in the range of (100 / 115) or more, more preferably (100 / 105) or more, on a mass basis.

[0060] The PAS resin composition according to this embodiment may also contain other known and commonly used additives as optional components, such as colorants, antistatic agents, antioxidants, heat stabilizers, UV stabilizers, UV absorbers, foaming agents, flame retardants, flame retardant assistants, rust inhibitors, mold release agents (metal salts or esters of fatty acids having 18 to 30 carbon atoms, including stearic acid or montanic acid, and polyolefin waxes such as polyethylene), antibacterial agents, and antiviral agents. These additives are not essential components, and may be used in amounts of, for example, preferably 0.01 part by mass or more, and preferably 1000 parts by mass or less, more preferably 100 parts by mass or less, and even more preferably 10 parts by mass or less, per 100 parts by mass of the PAS resin (A), depending on the purpose and application so as not to impair the effects of the present invention.

[0061] <Method for Producing PAS Resin Composition> The method for producing a PAS resin composition according to this embodiment is a method for producing a PAS resin composition, which comprises blending a PAS resin (A), a carbon-based nanomaterial (B), and a silicone-based elastomer (C) as essential components, and melt-kneading at a temperature not lower than the melting point of the PAS resin (A). With respect to 100 parts by mass of the PAS resin (A), the carbon-based nanomaterial (B) is 0.1 to 2 parts by mass, and the silicone-based elastomer (C) is 3 to 20 parts by mass. The silicone-based elastomer (C) is of a core-shell type. This will be described in detail below.

[0062] The method for producing a PAS resin composition according to this embodiment has a step of blending the above essential components and melt-kneading in a temperature range not lower than the melting point of the PAS resin (A). More specifically, the PAS resin composition according to this embodiment is obtained by blending each essential component and, if necessary, other optional components. The method for producing the resin composition used in the present invention is not particularly limited, but examples thereof include a method of blending essential components and optional components as necessary, and melt-kneading, and more specifically, a method of uniformly dry-blending using a tumbler or a Henschel mixer as necessary, and then charging into a twin-screw extruder for melt-kneading.

[0063] The melt-kneading can be carried out by heating to a temperature within a range where the resin temperature is not lower than the melting point of the PAS resin (A), preferably not lower than the melting point + 10°C, more preferably not lower than the melting point + 10°C, still more preferably not lower than the melting point + 20°C, and preferably not higher than the melting point + 100°C, more preferably not higher than the melting point + 50°C.

[0064] As the melt kneader, a twin-screw kneading extruder is preferable from the viewpoints of dispersibility and productivity. For example, it is preferable to perform melt kneading while appropriately adjusting the range of the discharge amount of the resin component of 5 to 500 (kg / hr) and the range of the screw rotation speed of 50 to 500 (rpm), and it is more preferable to perform melt kneading under the condition that the ratio thereof (discharge amount / screw rotation speed) is in the range of 0.02 to 5 (kg / hr / rpm). Further, the addition and mixing of each component to the melt kneader may be performed simultaneously or separately. For example, when adding PA fiber (B) as an essential component or other fibrous fillers as necessary among the above components, it is preferable to introduce them into the extruder from the side feeder of the twin-screw kneading extruder from the viewpoint of dispersibility. The position of such a side feeder is preferably such that the ratio of the distance from the resin charging part (top feeder) of the twin-screw kneading extruder to the side feeder to the total length of the screw of the twin-screw kneading extruder is 0.1 or more, and more preferably 0.3 or more. Further, such a ratio is preferably 0.9 or less, and more preferably 0.7 or less.

[0065] The PAS resin composition according to the present embodiment obtained by melt kneading in this way is a molten mixture containing the above essential components, optional components added as necessary, and their derived components. Therefore, the PAS resin composition according to the present embodiment has a morphology in which the PAS resin (A) forms a continuous phase and other essential components and optional components are dispersed. <0000?66> The PAS resin composition according to the present embodiment, after the melt kneading, is preferably processed into a form such as pellets, chips, granules, powders, etc. by a known method, for example, by extruding the molten resin composition into strands and then performing preliminary drying in a temperature range of 100 to 150°C as necessary.

[0067] <PAS Resin Molded Article, Method for Producing PAS Resin Molded Article> The molded article according to this embodiment is produced by melt-molding a PAS resin composition. The method for producing the molded article according to this embodiment includes a step of melt-molding the PAS resin composition. Therefore, the molded article according to this embodiment has a morphology in which the PAS resin (A) forms a continuous phase and other essential and optional components are dispersed. The PAS resin composition having such a morphology allows the production of molded articles with excellent thermal conductivity and mechanical strength.

[0068] The PAS resin composition according to this embodiment can be subjected to various molding processes, such as injection molding, compression molding, extrusion molding (e.g., composite, sheet, pipe), pultrusion molding, blow molding, and transfer molding. However, due to its excellent mold releasability, it is particularly suited to injection molding applications. When molding by injection molding, the molding conditions are not particularly limited, and molding can be performed using conventional methods. For example, the PAS resin composition can be melted in an injection molding machine at a resin temperature in a range equal to or higher than the melting point of the PAS resin (A), preferably in a range of 10°C above the melting point, more preferably in a range of 10°C above the melting point to 100°C above the melting point, and even more preferably in a range of 20°C above the melting point to 50°C above the melting point, and then injected into a mold through a resin outlet. The mold temperature can also be set within a known temperature range, for example, from room temperature (23°C) to 300°C, preferably 130°C to 190°C.

[0069] The method for producing a molded article according to this embodiment may include a step of annealing the molded article. The optimal conditions for the annealing treatment are selected depending on the intended use or shape of the molded article. The annealing temperature is preferably in the range of the glass transition temperature of the PAS resin (A) or higher, preferably in the range of the glass transition temperature +10°C or higher, and more preferably in the range of the glass transition temperature +30°C or higher. The annealing time is preferably in the range of 260°C or lower, and more preferably in the range of 240°C or lower. The annealing time is not particularly limited, but is preferably in the range of 0.5 hours or higher, more preferably in the range of 1 hour or higher. The annealing time is preferably in the range of 10 hours or lower, and more preferably in the range of 8 hours or lower. This range is preferable because it reduces distortion in the resulting molded article, improves the crystallinity of the resin, and further improves the thermal conductivity, mechanical strength, and other properties. The annealing treatment may be performed in air, but is preferably performed in an inert gas such as nitrogen gas.

[0070] The molded article according to this embodiment includes a remolded article obtained by reusing a molded article obtained by melt-molding the PAS resin composition. Specifically, examples include sprues or runners generated during the production of molded articles, recovered non-standard molded articles, and molded articles once used as products, which are cleaned as necessary, pulverized, and then remolded at a temperature above the melting point of the PAS resin. When recycling, it is preferable to mix the pulverized molded article with the PAS resin composition from the viewpoint of mechanical strength. The size of the pulverized molded article is not particularly limited, but from the viewpoints of mixability and processability, it is preferable that the size be similar to that of the PAS resin composition to be mixed. Furthermore, the mixing ratio of the pulverized molded article to 100 parts by mass of the PAS resin composition is preferably 50 parts by mass or less, more preferably 40 parts by mass or less, and even more preferably 20 parts by mass or less. Within this range, recyclability can be improved without impairing the effects of the PAS resin composition of the present disclosure.

[0071] <Composite and method for manufacturing the composite> The composite according to this embodiment is a resin-metal composite obtained by joining the molded article described above to a metal member. The method for producing the composite according to this embodiment includes the steps of producing the molded article by the method described above and joining the obtained molded article to a metal member.

[0072] The metal member applicable to this embodiment is not particularly limited as long as it does not impair the effects of the present invention, and known metal members can be used, such as aluminum, copper, stainless steel, magnesium, iron, titanium, or alloys containing any of these. More specifically, examples of the alloy include iron and alloys containing iron as the main component, such as stainless steel and steel, i.e., 20% by mass or more, more preferably 50% by mass or more, and even more preferably 80% by mass, with carbon, silicon, manganese, chromium, tungsten, molybdenum, phosphorus, titanium, vanadium, nickel, zirconium, boron, etc. (hereinafter referred to as iron alloys); aluminum and alloys containing aluminum as the main component and also copper, manganese, silicon, magnesium, zinc, nickel, etc. (hereinafter referred to as aluminum alloys); magnesium and alloys containing magnesium as the main component and also zinc, aluminum, zirconium, etc. (hereinafter referred to as magnesium alloys); copper and alloys containing copper as the main component and also zinc, tin, phosphorus, nickel, magnesium, silicon, chromium, etc. (hereinafter referred to as copper alloys); and titanium and alloys containing titanium as the main component and also copper, manganese, silicon, magnesium, zinc, nickel, etc. (hereinafter referred to as titanium alloys). Among these, iron, iron alloys, aluminum alloys, magnesium alloys, copper alloys, and titanium alloys are more preferred, and iron alloys, aluminum alloys, and magnesium alloys are even more preferred. The shape of the metal member is not particularly limited, and examples include those processed into, for example, a flat plate, curved plate, rod, cylinder, or block shape by plastic processing such as pressing, punching, cutting, polishing, or thinning processing such as electric discharge machining. Alternatively, it may be a film-like material such as a metal foil.

[0073] The metal member may also be surface-roughened. Known surface roughening methods can be used, including (1) immersion in an aggressive aqueous solution or suspension, (2) anodizing, and (3) mechanical cutting using blasting or laser processing. Among these, (1) immersion in an aggressive aqueous solution or suspension or (2) anodizing is particularly preferred as a surface roughening method for metal members. When surface-treating the metal member, it is preferable to process the metal member into a desired shape by cutting, plastic processing using a press, or other such method, punching, cutting, grinding, or thinning processing such as electric discharge machining, before forming the finely textured surface.

[0074] A primer layer may be formed on the surface of a metal member that has undergone a metal surface treatment. The material constituting the primer layer is not particularly limited, but it is typically made of a primer resin material containing a resin component. The primer resin material is not particularly limited, and known materials can be used. Specific examples include known polyolefin-based primers, epoxy-based primers, and urethane-based primers. The method for forming the primer layer is not particularly limited, but it can be formed, for example, by applying a solution of the primer resin material or an emulsion of the primer resin material to the metal member that has undergone the surface treatment. Examples of solvents used to prepare the solution include toluene, methyl ethyl ketone (MEK), and dimethylphosphoramide (DMF). Examples of media for the emulsion include aliphatic hydrocarbon media and water.

[0075] The method for joining the resin molded article of the present disclosure to a metal member is not particularly limited as long as it does not impair the effects of the present invention, and known methods and devices can be used. Examples include a method of joining the resin composition of the present disclosure to a metal member by melt-molding it, a method of welding the molded article of the present disclosure to a metal member, a method of caulking the molded article of the present disclosure to a metal member, and a method of mechanically joining the molded article of the present disclosure to a metal member.

[0076] Examples of the method for joining a metal member by melt molding the resin composition of the present disclosure include a method for joining a metal member by melt molding the resin composition of the present disclosure. Specifically, a metal insert molding method is used in which a metal member is inserted into a mold of an injection molding machine and then injection molded onto the metal member using the resin composition of the present disclosure. The apparatus and manufacturing method for the insert molding method are not particularly limited, and commercially available apparatus can be used, or conventional methods can be used.

[0077] The method for welding the molded article of the present disclosure to a metal member includes contacting the molded article of the present disclosure with the metal member and heating them to bond them, or heating them, bringing them into contact, bonding them, and then cooling them. Specific examples include hot plate welding, vibration welding, infrared welding, infrared vibration welding, ultrasonic welding, high-frequency welding, induction heating welding, rotary welding, laser welding, hot pressing, hot embossing, and friction stir welding. Commercially available equipment and manufacturing methods can be used for these joining methods, or conventional methods can be used.

[0078] A method for crimping the molded article of the present disclosure and a metal member includes passing a rivet through a hole in the molded article of the present disclosure and a hole in the metal member, and deforming the rivet to fix them. Specific examples include press crimping, spin crimping, and heat crimping. Commercially available equipment and manufacturing methods for these joining methods can be used, or they can be performed according to conventional methods. Examples of methods for mechanically joining the molded article of the present disclosure and a metal member include mechanical fastening using screws, pins, shafts, bolts, nuts, clamps, etc., and fixing using a fitting structure.

[0079] <Application> The PAS resin molded article according to this embodiment has excellent toughness, which allows it to adhere strongly to metal or other resin components when combined with them, minimizing thermal and electrical conduction losses at the interface. Furthermore, the excellent electrical conductivity and flame retardancy make it particularly suitable for conductive component applications. Specifically, it can be used for conductive components such as electrode peripheral components for secondary batteries such as lithium-ion batteries, carrier trays, battery components, conductive reels, and conductive pallets, as well as electromagnetic shielding components such as electronic device cases, inverter cases, ECU housings, and medical device cases. Furthermore, the molded articles and composites according to this embodiment can be used not only for conductive components but also for other general applications such as the following: For example, protective and supporting materials for box-shaped integrated modules of electric and electronic components, multiple individual semiconductors or modules, sensors, LED lamps, connectors, sockets, resistors, relay cases, switches, coil bobbins, capacitors, variable capacitor cases, optical pickups, oscillators, various terminal boards, transformers, plugs, printed circuit boards, tuners, speakers, microphones, headphones, small motors, magnetic head bases, power modules, terminal blocks, semiconductors, liquid crystal displays, FDD carriages, FDD chassis, motor brush holders, parabolic antennas, electric and electronic components such as computer-related parts; VTR parts, television parts, irons, headsets Home and office electrical appliance parts such as air dryers, rice cooker parts, microwave oven parts, audio parts, audio / visual equipment parts such as laser discs, compact discs, DVD discs, and Blu-ray discs, lighting parts, refrigerator parts, air conditioner parts, typewriter parts, word processor parts, and plumbing equipment parts such as water heaters, bath water volume and temperature sensors; machine-related parts such as office computer-related parts, telephone-related parts, facsimile-related parts, copier-related parts, cleaning jigs, motor parts, lighters, and typewriters; optical equipment and precision machinery-related parts such as microscopes, binoculars, cameras, and watches;Alternator terminals, alternator connectors, brush holders, slip rings, IC regulators, light dimmer potentiometer bases, relay blocks, inhibitor switches, various valves such as exhaust gas valves, various pipes for fuel, exhaust and intake systems, air intake nozzle snorkels, intake manifolds, engine coolant joints, carburetor main bodies, carburetor spacers, exhaust gas sensors, coolant sensors, oil temperature sensors, brake pad wear sensors, throttle position sensors, crankshaft position sensors, temperature sensors, air flow meters, brake pad wear sensors, air conditioner thermostat bases, heating hot air flow control valves, radiators Examples of automotive and vehicle related parts include brush holders for motors, water pump impellers, turbine vanes, wiper motor related parts, distributors, starter switches, ignition coils and bobbins, motor insulators, motor rotors, motor cores, starter relays, transmission wire harnesses, windshield washer nozzles, air conditioner panel switch boards, fuel-related electromagnetic valve coils, fuse connectors, horn terminals, electrical component insulating plates, step motor rotors, lamp sockets, lamp reflectors, lamp housings, brake pistons, solenoid bobbins, engine oil filters, ignition device cases, and many other applications. [Example]

[0080] The present invention will be explained below using examples and comparative examples, but is not limited to these examples. Unless otherwise specified, "%" and "parts" are based on mass.

[0081] <Examples 1 to 5 and Comparative Examples 1 to 5> The materials were blended according to the composition and amounts listed in Table 1. These blended materials were then fed into a vented twin-screw extruder "TEX-30α (product name)" manufactured by The Japan Steel Works, Ltd., and melt-kneaded at a resin component output rate of 30 kg / hr, a screw rotation speed of 200 rpm, and a set resin temperature of 310°C to obtain pellets of the resin composition. The glass fiber was fed through a side feeder (S / T ratio 0.5), and the other materials were pre-mixed uniformly in a tumbler and then fed through the top feeder. The resulting pellets of the resin composition were dried for 2 hours in a gear oven at 140°C and then injection-molded to prepare various test pieces, which were then subjected to the following tests.

[0082] <Evaluation>

[0083] (1) Measurement of Charpy impact strength The pellets obtained in each example and comparative example were fed into a Sumitomo Heavy Industries injection molding machine (SE-75D-HP) set at a cylinder temperature of 310°C, and injection molding was carried out using an ISO Type 1A dumbbell specimen mold with a mold temperature controlled at 140°C to obtain ISO Type-A dumbbell specimens. The resin was injected from a single gate to produce test specimens that did not include welds. The central portion of the dumbbell-shaped test specimen was cut into a rod shape measuring 80 mm in length, 10 mm in width, and 4 mm in thickness, and notched to prepare an impact resistance test specimen. A Charpy impact test was carried out in accordance with ISO179-1 / 1eA to measure the impact strength (kJ / mm 2 The results are shown in Table 1.

[0084] (2) Volume resistivity measurement The volume resistivity was measured using the Loresta AX MCP-T370 manufactured by Nitto Seiko Analytech Co., Ltd. (measurement limit: 10 6The volume resistivity of each test piece was measured using a resistivity tester (Ω) under conditions of room temperature 21°C and humidity 67% RH in accordance with JIS K 7194 "Testing method for resistivity of conductive plastics by the four-probe method." The test pieces were prepared by feeding the pellets obtained in each example and comparative example into an injection molding machine (SE-75D-HP) manufactured by Sumitomo Heavy Industries, Ltd., with a cylinder temperature set to 310°C, and injection molding using a plate molding mold with a mold temperature adjusted to 140°C to form a plate shape (80 mm x 50 mm x 2 mm). The results are shown in Table 1.

[0085] (3) Evaluation of heat cycle resistance The following molded articles with welds were used to evaluate thermal shock resistance. To evaluate the welds quickly, we used molded articles with metal members that have a large thermal expansion coefficient inserted into them. A steel insert block member measuring 25 mm in length, 40 mm in width, and 10 mm in thickness was prepared. Two through holes, each 3.55 mm in diameter and parallel to the thickness direction, were located on a line connecting the midpoints of the longitudinal sides of the member and parallel to the horizontal sides, with the centers of the through holes spaced 20 mm apart about the midpoint of the line. The insert block member was then held in place within the injection mold using the two through holes and two cylindrical steel pins installed within the injection mold. After injection molding, pellets of a PAS resin composition were injection molded into the insert block member. The entire outer periphery of the insert block member was coated with a 1 mm-thick polyphenylene sulfide resin composition, and a weld was formed. The PAS resin composition pellets were then injection molded into a molded product. The molded articles were subjected to a thermal shock test in a gas-phase thermal shock tester, with one cycle consisting of a 30-minute hold at -40°C and a 30-minute hold at 150°C, and the number of cycles required for cracking and fracture was measured. Five tests were conducted for each example and comparative example, and the average value was used as the result. The results are shown in Table 1.

[0086] (4) Flammability evaluation Flammability was evaluated by a 20 mm vertical flame burning test (V test) using 125 mm × 13 mm × 1.5 mm bar-shaped test pieces prepared from the resin compositions of the Examples and Comparative Examples in accordance with the UL94 V test method. The results are shown in Table 1.

[0087] (5) Determination of carboxyl group content of PAS resin Each PPS resin used in each example and comparative example was pressed at 350°C under a load of 10 MPa for 60 seconds, and then rapidly cooled to 25°C over 60 seconds to prepare an amorphous film. The obtained amorphous film was measured using a Fourier transform infrared spectrometer (hereinafter abbreviated as "FT-IR device"). In the infrared absorption spectrum, the peak at 630.6 cm -1 Absorbance at 1705cm -1 The relative absorbance intensity of the resin mixture was determined, and the carboxyl group content in the measurement sample (hereinafter referred to as "total carboxyl group content") was calculated using a calibration curve prepared by the method described below. The carboxyl group content is expressed as the number of moles per 1 g of resin mixture, and its unit is μmol / g. The calibration curve was prepared as follows. First, a predetermined amount of 4-chlorophenylacetic acid was added to a PAS resin prepared without acid treatment so as to contain carboxylate salts at the molecular terminals, and the mixture was thoroughly mixed. Then, a film similar to that described above was prepared and measured using an FT-IR device. A calibration curve was prepared by plotting the relative intensity ratio of the absorbance at the two wavelengths against the carboxyl group content calculated from the amount of 4-chlorophenylacetic acid added.

[0088] [Table 1]

[0089] The blending ratios of the blending components in Table 1 are as follows: ·PAS resin A: PPS resin (melt viscosity (V6) 30 Pa·s, zeta potential -64 mV, carboxyl group content 30 μmol / g)

[0090] Carbon-based nanomaterials B: CABOT "ATHLOS 200"

[0091] Elastomer C-1: Silicone elastomer, "Metablen S-2200" manufactured by Mitsubishi Chemical Corporation C-2: Silicone elastomer, "Metablen S-2501" manufactured by Mitsubishi Chemical Corporation C-3: Olefin elastomer, "Bondfast 7L" manufactured by Sumitomo Chemical Co., Ltd.

[0092] ·Optional ingredients D: Glass fiber, Nippon Electric Glass Co., Ltd. "T-717H", fiber length 3 mm, average diameter 10 μm E: Silane coupling agent, epoxy silane 3-glycidoxypropyltrimethoxysilane "SH-6040" manufactured by Dow Corning Co., Ltd.

[0093] Comparing the Examples and Comparative Examples in Table 1, Comparative Example 1, which contained a small amount of Component C, was poor in mechanical strength and thermal shock resistance. Conversely, Comparative Example 2, which contained a large amount of Component C, was unable to produce materials or test pieces due to poor processability. Comparative Example 3, which contained no Component B, had a high volume resistivity that was impossible to measure, indicating poor conductivity. Comparative Example 4, which contained a large amount of Component B, was poor in thermal shock resistance. Comparative Example 5, in which Component C was an olefin-based elastomer, resulted in poor flammability.

Claims

1. A polyarylene sulfide resin composition comprising a polyarylene sulfide resin (A), a carbon-based nanomaterial (B), and a silicone-based elastomer (C) as essential components, the carbon-based nanomaterial (B) is 0.1 to 2 parts by mass and the silicone-based elastomer (C) is 3 to 25 parts by mass relative to 100 parts by mass of the polyarylene sulfide resin (A); A polyarylene sulfide resin composition, characterized in that the silicone-based elastomer (C) is a core-shell type.

2. 2. The polyarylene sulfide resin composition according to claim 1, further comprising 10 to 120 parts by mass of a fibrous filler (D) blended with 100 parts by mass of the polyarylene sulfide resin (A).

3. 2. The polyarylene sulfide resin composition according to claim 1, wherein the polyarylene sulfide resin (A) has a carboxyl group in its molecular structure, and the content of the functional group is 10 to 200 μmol / g.

4. A molded article obtained by melt molding the polyarylene sulfide resin composition according to claim 1.

5. A composite member obtained by joining the molded article according to claim 4 to a metal member.

6. A method for producing a polyarylene sulfide resin composition, comprising a step of blending a polyarylene sulfide resin (A), a carbon-based nanomaterial (B), and a silicone-based elastomer (C) as essential components, and melt-kneading the blended components at a temperature equal to or higher than the melting point of the polyarylene sulfide resin (A), the carbon-based nanomaterial (B) is 0.1 to 2 parts by mass and the silicone-based elastomer (C) is 1 to 20 parts by mass relative to 100 parts by mass of the polyarylene sulfide resin (A); 1. A method for producing a polyarylene sulfide resin composition, wherein the silicone-based elastomer (C) is a core-shell type.

7. 7. The method for producing a polyarylene sulfide resin composition according to claim 6, further comprising blending 10 to 120 parts by mass of a fibrous filler (D) with respect to 100 parts by mass of the polyarylene sulfide resin (A).

8. 7. The method for producing a polyarylene sulfide resin composition according to claim 6, wherein the polyarylene sulfide resin (A) has a carboxyl group in its molecular structure, and the content of the functional group is 10 to 200 μmol / g.

9. A method for producing a molded article, comprising the steps of producing a polyarylene sulfide resin composition by the method according to claim 6 and melt-molding the obtained polyarylene sulfide resin composition.

10. A method for producing a composite, comprising the steps of producing a molded article by the method according to claim 9 and joining the obtained molded article to a metal member.

11. A method for using the composite of claim 5 as a conductive member.

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