JP2008013617A - Polyarylene sulfide composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a polyarylene sulfide composition excellent in electrical properties such as tracking resistance particularly useful for application to an electric component such as an electric/electronic component or an automobile electric component, mechanical strength, melt fluidity and mold releasability and excellent in a low gas emission. <P>SOLUTION: The polyarylene sulfide composition comprises 20-50 wt.% polyarylene sulfide (a), 0.05-5 wt.% carnauba wax (b1) and/or carboxylic amide wax (b2), 20-70 wt.% magnesium hydroxide (c) and 10-60 wt.% fibrous filler (d). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is excellent in electrical properties such as tracking resistance without impairing the heat resistance, chemical resistance, dimensional stability, etc. inherent to polyarylene sulfide, as well as mechanical strength, melt fluidity, mold releasability. , And a polyarylene sulfide composition that generates a small amount of gas when melted (hereinafter referred to as low gasity), and more particularly, is particularly useful for electrical parts such as electrical / electronic parts or automotive electrical parts. The present invention relates to a polyarylene sulfide composition.

  Polyarylene sulfide is a resin that exhibits excellent properties such as heat resistance, chemical resistance, and dimensional stability. Utilizing these excellent properties, it is widely used in electrical and electronic equipment members, automotive equipment members, OA equipment members, etc. Has been.

  However, since polyarylene sulfide is greatly inferior in tracking resistance as compared with other engineering plastics such as polyamide, its use in applications where it is exposed to a relatively high voltage has been limited.

  Several attempts have been made to improve the tracking resistance of polyarylene sulfides. For example, (a) polyphenylene sulfide, (b) polyamide, and (c) a metal whose main component is magnesium hydroxide. One or more kinds of heavy materials selected from a resin composition containing a hydroxide (see, for example, Patent Document 1), (a) polyarylene sulfide, (b) polyolefin (co) polymer, silicone, and fluorine resin. (C) magnesium hydroxide, and (d) a resin composition containing a fibrous and / or non-fibrous filler (see, for example, Patent Document 2), (a) polyphenylene sulfide, (b) specific A resin composition containing magnesium hydroxide having an average particle size of and a specific particle size distribution, and (c) a fibrous and / or non-fibrous filler For example, see Patent Document 3.), And the like have been proposed.

JP 05-271542 A Japanese Patent Laid-Open No. 08-291253 JP 2001-288363 A

  However, the resin compositions proposed in Patent Documents 1 to 3 have a problem that the tracking resistance is not yet satisfactory. In addition, in these proposed resin compositions, in order to obtain sufficiently excellent tracking resistance, a high magnesium hydroxide content is essential, and therefore the mechanical strength and melt fluidity of the composition are significantly reduced. Furthermore, the mold releasability and the appearance of the molded product deteriorated. That is, it is difficult for these resin compositions to obtain excellent tracking resistance, high mechanical strength, good melt fluidity, mold releasability, and molded product appearance at the same time.

  Accordingly, an object of the present invention is to provide a polyarylene sulfide composition having excellent tracking resistance and excellent in mechanical strength, melt fluidity, mold releasability, and low gas properties. An object of the present invention is to provide a polyarylene sulfide composition that is particularly useful for electrical component applications such as electrical / electronic components or automotive electrical components.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have achieved excellent tracking resistance by using a polyarylene sulfide composition comprising polyarylene sulfide, a specific lubricant, magnesium hydroxide and a fibrous filler. It has been found that the composition can be a composition having excellent mechanical strength, melt fluidity, mold releasability, and molded product appearance, and has completed the present invention.

  That is, the present invention relates to polyarylene sulfide (a) 20 to 50% by weight, carnauba wax (b1) and / or carboxylic acid amide wax (b2) 0.05 to 5% by weight, magnesium hydroxide (c) 20 to The present invention relates to a polyarylene sulfide composition comprising 70% by weight and 10 to 60% by weight of a fibrous filler (d).

  Hereinafter, the present invention will be described in detail.

  The polyarylene sulfide composition of the present invention comprises polyarylene sulfide (a) 20 to 50% by weight, carnauba wax (b1) and / or carboxylic acid amide wax (b2) 0.05 to 5% by weight, magnesium hydroxide ( c) 20 to 70% by weight and fibrous filler (d) 10 to 60% by weight.

  As the polyarylene sulfide (a) constituting the polyarylene sulfide composition of the present invention, any polyarylene sulfide may be used as long as it belongs to the category called polyarylene sulfide. Since the composition is excellent in mechanical strength and moldability, melt viscosity measured with a Koka flow tester using a die with a diameter of 1 mm and a length of 2 mm under the conditions of a measurement temperature of 315 ° C. and a load of 10 kg. Is preferably a polyarylene sulfide having 50 to 3000 poise, particularly preferably 60 to 1500 poise.

  Moreover, as this polyarylene sulfide (a), the thing containing 70 mol% or more, especially 90 mol% or more of p-phenylene sulfide units shown by the following general formula (1) as a structural unit is preferable.

そして、他の構成成分としては、例えば
下記の一般式（２）に示されるｍ−フェニレンスルフィド単位、

And as another structural component, for example, m-phenylene sulfide unit represented by the following general formula (2),

一般式（３）に示されるｏ−フェニレンスルフィド単位、

O-phenylene sulfide unit represented by the general formula (3),

一般式（４）に示されるフェニレンスルフィドスルホン単位、

A phenylene sulfide sulfone unit represented by the general formula (4),

一般式（５）に示されるフェニレンスルフィドケトン単位、

A phenylene sulfide ketone unit represented by the general formula (5),

一般式（６）に示されるフェニレンスルフィドエーテル単位、

A phenylene sulfide ether unit represented by the general formula (6),

一般式（７）に示されるジフェニレンスルフィド単位、

A diphenylene sulfide unit represented by the general formula (7),

一般式（８）に示される置換基含有フェニレンスルフィド単位、

A substituent-containing phenylene sulfide unit represented by the general formula (8),

（ここで、ＲはＯＨ、ＮＨ_２、ＣＯＯＨ、ＣＨ_３を示し、ｎは１又は２を示す。）
一般式（９）に示される分岐構造含有フェニレンスルフィド単位、

(Here, R represents OH, NH ₂ , COOH, CH ₃ , and n represents 1 or 2)
A branched structure-containing phenylene sulfide unit represented by the general formula (9):

等を含有していてもよく、中でもポリ（ｐ−フェニレンスルフィド）が好ましい。

In particular, poly (p-phenylene sulfide) is preferable.

  The production method of the polyarylene sulfide (a) is not particularly limited. For example, the polyarylene sulfide (a) can be produced by a method of reacting an alkali metal sulfide and a dihaloaromatic compound in a generally known polymerization solvent. Possible alkali metal sulfides include, for example, lithium sulfide, sodium sulfide, potassium sulfide, rubidium sulfide, cesium sulfide and mixtures thereof, which may be used in the form of hydrates. These alkali metal sulfides can also be obtained by reacting an alkali metal hydrosulfide with an alkali metal base, and can be prepared in situ prior to addition of the dihaloaromatic compound into the polymerization system, or outside the system. You can use the one adjusted in. Examples of the dihaloaromatic compound include p-dichlorobenzene, p-dibromobenzene, p-diiodobenzene, m-dichlorobenzene, m-dibromobenzene, m-diiodobenzene, 1-chloro-4-bromobenzene. 4,4′-dichlorodiphenyl sulfone, 4,4′-dichlorodiphenyl ether, 4,4′-dichlorobenzophenone, 4,4′-dichlorodiphenyl, and the like. The charging ratio of the alkali metal sulfide and the dihaloaromatic compound is preferably in the range of alkali metal sulfide / dihaloaromatic compound (molar ratio) = 1.00 / 0.90 to 1.10.

  As the polymerization solvent, a polar solvent is preferable, and an organic amide which is aprotic and stable to alkali at high temperature is particularly preferable. Examples of the organic amide include N, N-dimethylacetamide, N, N-dimethylformamide, hexamethylphosphoramide, N-methyl-ε-caprolactam, N-ethyl-2-pyrrolidone, and N-methyl-2-pyrrolidone. 1,3-dimethylimidazolidinone, dimethyl sulfoxide, sulfolane, tetramethylurea and mixtures thereof. Moreover, it is preferable to use this polymerization solvent in 150-3500 weight% with respect to the polymer produced | generated by superposition | polymerization, and it is preferable to use especially in the range used as 250-1500 weight%. The polymerization is preferably carried out at 200 to 300 ° C., particularly 220 to 280 ° C. for 0.5 to 30 hours, particularly 1 to 15 hours with stirring.

  Furthermore, even if the polyarylene sulfide (a) is linear or is treated and crosslinked at a high temperature in the presence of oxygen, a slight amount of a polyhalo compound of trihalo or higher is added to form a slight crosslink. Alternatively, a branched structure may be introduced, a heat treatment may be performed in a non-oxidizing inert gas such as nitrogen, or a mixture of these structures may be used.

  The blending amount of the polyarylene sulfide (a) constituting the polyarylene sulfide composition of the present invention is 20 to 50% by weight. When the polyarylene sulfide composition is out of this range, the resulting polyarylene sulfide composition has a tracking resistance, It becomes inferior to melt fluidity and mechanical strength.

  The carnauba wax (b1) and / or the carboxylic acid amide wax (b2) constituting the polyarylene sulfide composition of the present invention is blended to improve the tracking resistance of the polyarylene sulfide composition. . As the carnauba wax (b1), a general commercial product can be used, and examples thereof include (trade name) purified carnauba No. 1 powder (manufactured by Nikko Fine Products). The carboxylic acid amide wax (b2) is a polycondensate composed of a higher aliphatic monocarboxylic acid, a polybasic acid, and a diamine, and any one belonging to this category can be used. Examples thereof include (trade name) LIGHT AMIDE WH-255 (manufactured by Kyoeisha Chemical Co., Ltd.), which is a polycondensate composed of stearic acid, sebacic acid, and ethylenediamine.

  The blend amount of the carnauba wax (b1) and / or the carboxylic acid amide-based wax constituting the polyarylene sulfide composition of the present invention is 0.05 to 5% by weight. The sulfide composition causes problems such as mold contamination during molding, and is inferior in tracking resistance, melt fluidity, mold releasability, and low gas properties.

Any magnesium hydroxide (c) constituting the polyarylene sulfide composition of the present invention may be used as long as it belongs to the category called magnesium hydroxide. Among them, since the resulting polyarylene sulfide composition has excellent tracking resistance and melt fluidity and has high mechanical strength, 80 wt.% Of the hydroxide represented by the chemical formula Mg (OH) ₂ is used. % Or more of magnesium hydroxide having a relatively high purity is preferable. More preferably, the hydroxide represented by the chemical formula Mg (OH) ₂ is 80% by weight or more, the CaO content is 5% by weight or less, the chlorine content is 1% by weight or less, and more preferably Mg (OH) _{2 is} 95% by weight. %, CaO content 1 wt% or less, chlorine content 0.5 wt% or less, most preferably Mg (OH) ₂ 98 wt% or more, CaO content 0.1 wt% or less, chlorine content 0 .1% by weight or less of high purity magnesium hydroxide.

  Examples of the magnesium hydroxide (c) include magnesium hydroxide that has not been surface-treated (hereinafter referred to as surface untreated magnesium hydroxide (c1)), higher fatty acids and / or metal salts of higher fatty acids, and silanes. Examples thereof include magnesium hydroxide (hereinafter referred to as surface-treated magnesium hydroxide) that has been surface-treated with a coupling agent, titanate coupling agent, aluminate coupling agent, or the like. And there is no limitation in particular about the surface treatment processing agent of surface treatment magnesium hydroxide, As higher fatty acid and its metal salt, for example, stearic acid, oleic acid, etc. For example, sulfates of higher alcohols, phosphate esters such as orthophosphoric acid and higher alcohol esters, silane coupling agents such as vinyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane, γ- Examples of titanate coupling agents such as aminopropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, and γ-mercaptopropyltrimethoxysilane include aluminum coupling agents such as isopropyltriisostearoyl titanate. , For example, acetoalkoxyaluminum diisopropylate, as the esters of polyhydric alcohols and fatty acids such as glycerin monostearate, and the like. Among these magnesium hydroxides (c), a polyarylene sulfide composition having particularly excellent mechanical strength is obtained, so that the surface-treated rough magnesium hydroxide (c1) and the hydroxylated surface treated with a silane coupling agent are used. Magnesium (c2) and mixtures thereof are preferred.

  The blending amount of magnesium hydroxide (c) constituting the polyarylene sulfide composition of the present invention is 20 to 70% by weight, and if it is out of this range, the resulting polyarylene sulfide composition has a tracking resistance, a melting resistance. It is inferior in fluidity, mold releasability and low gas properties.

  The fibrous filler (d) constituting the polyarylene sulfide composition of the present invention is blended to improve the mechanical strength and dimensional stability of the polyarylene sulfide composition, and this object is achieved. Any fibrous filler can be used. Examples of the fibrous filler (d) include glass fiber, carbon fiber, potassium titanate whisker, zinc oxide whisker, aluminum borate whisker, aramid fiber, alumina fiber, silicon carbide fiber, asbestos fiber, stone koji fiber, and metal fiber. Among them, glass fiber and carbon fiber are preferable. The fibrous filler (d) is surface-treated with an isocyanate compound, a silane coupling agent, a titanate coupling agent, an epoxy compound or the like because the polyarylene sulfide composition has high mechanical strength. It is preferable that

  The blending amount of the fibrous filler (d) constituting the polyarylene sulfide composition of the present invention is 10 to 60% by weight, and if it is out of this range, the resulting polyarylene sulfide composition has a mechanical strength. It will be inferior.

  The polyarylene sulfide composition of the present invention may contain a non-fibrous filler within a range not departing from the object of the present invention. Examples of the non-fibrous filler include wollastonite, zeolite, sericite, Silicates such as kaolin, mica, clay, pyrophyllite, bentonite, talc, alumina silicate, oxides such as aluminum oxide, silicon oxide, magnesium oxide, zirconium oxide, titanium oxide, zinc oxide, iron oxide, calcium carbonate, carbonic acid Examples thereof include carbonates such as magnesium and dolomite, sulfates such as calcium sulfate and barium sulfate, nitrides such as silicon nitride, boron nitride and aluminum nitride, glass flakes and glass beads, among which mica, clay, talc, Calcium carbonate, glass flakes and glass beads are preferred. The non-fibrous filler may be a surface treated with an isocyanate compound, a silane coupling agent, a titanate coupling agent, an epoxy compound, or the like.

  Furthermore, the polyarylene sulfide composition of the present invention can be used in various thermosetting resins and thermoplastic resins, such as epoxy resins, cyanate ester resins, phenol resins, polyimides, silicone resins, polyolefins, without departing from the object of the present invention. One or more of polyester, polyamide, polyphenylene oxide, polycarbonate, polysulfone, polyetherimide, polyethersulfone, polyetherketone, polyetheretherketone, etc. can be mixed and used.

  As a method for producing the polyarylene sulfide composition of the present invention, a conventionally used hot melt kneading method can be used. For example, a heat melt kneading method using a single screw or twin screw extruder, a kneader, a mill, a Brabender or the like can be mentioned, and a melt kneading method using a twin screw extruder excellent in kneading ability is particularly preferable. Moreover, the kneading | mixing temperature in this case is not specifically limited, Usually, it can select arbitrarily from 280-400 degreeC. Moreover, the polyarylene sulfide composition of the present invention can be molded into an arbitrary shape using an injection molding machine, an extrusion molding machine, a transfer molding machine, a compression molding machine, or the like.

  Further, the polyarylene sulfide composition of the present invention is a conventionally known heat stabilizer, antioxidant, ultraviolet absorber, crystal nucleating agent, foaming agent, mold corrosion inhibitor, and the like within a range not departing from the object of the present invention. One or more additives such as flame retardants, flame retardant aids, colorants such as dyes and pigments, and antistatic agents may be used in combination.

  The polyarylene sulfide composition of the present invention includes a power module, various terminal boards, a generator, an electric motor, a transformer, a current transformer, a voltage regulator, a rectifier, an inverter, a multipolar rod, an electrical component cabinet, a light socket, a plug, It can be particularly suitably used for applications such as a capacitor sealing plate.

  The present invention provides a polyarylene sulfide composition excellent in electrical characteristics such as tracking resistance, mechanical strength, melt fluidity, mold releasability, and low gas properties, and the polyarylene sulfide composition Is particularly useful for electrical component applications such as electrical / electronic components or automotive electrical components.

  EXAMPLES Next, although an Example and a comparative example demonstrate this invention, this invention is not restrict | limited to these examples at all.

  In Examples and Comparative Examples, polyarylene sulfide (a), carnauba wax (b1), carboxylic acid amide wax (b2), surface untreated magnesium hydroxide (c1), surface treated magnesium hydroxide (c2), fibrous The following were used as the filler (d) and non-fibrous filler.

<Polyarylene sulfide (a)>
Poly (p-phenylene sulfide) (a-1) (hereinafter simply referred to as PPS (a-1)): Melt viscosity 110 poise poly (p-phenylene sulfide) (a-2) (hereinafter simply referred to as PPS (a- 2)): Melt viscosity 300 poise poly (p-phenylene sulfide) (a-3) (hereinafter simply referred to as PPS (a-3)): Melt viscosity 350 poise <Carnauba wax (b1)>
Carnauba wax (b1-1); (trade name) purified carnauba No. 1 powder manufactured by Nikko Fine Products.

<Carboxylic acid amide wax (b2)>
Carboxylic acid amide wax (b2-1) (hereinafter simply referred to as acid amide wax (b2-1)); manufactured by Kyoeisha Chemical Co., Ltd., (trade name) Light Amide WH-255; stearic acid, sebacic acid, Ethylenediamine polycondensate <magnesium hydroxide (c)>
Surface untreated magnesium hydroxide (c1-1); manufactured by Martinsberg, (trade name) Magnifine H5; Mg (OH) ₂ content 99.8% by weight, average particle size 0.8 μm, specific surface area 5.5 m ² / g.
Surface treated magnesium hydroxide (c2-1); manufactured by Kyowa Chemical Industry Co., Ltd., (trade name) Kisuma 5P; Mg (OH) ₂ content 99.5% by weight, average particle size 0.7 μm, specific surface area 6. 5 m ² / g, surface treatment agent: methacryloxysilane.
Surface-treated magnesium hydroxide (c2-2); manufactured by Kyowa Chemical Industry Co., Ltd., (trade name) Kisuma 5B; Mg (OH) ₂ content 98% by weight, average particle diameter 0.8 μm, specific surface area 9.0 m ² / G, surface treatment agent: stearic acid.

<Fibrous filler (d)>
Glass fiber (d1-1); manufactured by NSG Vetrotex Co., Ltd. (trade name) RES03-TP91; fiber diameter 9 μm, fiber length 3 mm.

<Non-fibrous filler>
Talc; manufactured by Hayashi Kasei Co., Ltd. (trade name) Micron White # 5000A; average particle size 4.1 μm.

<Synthesis Example 1 (Synthesis of PPS (a-1), PPS (a-2))>
A 15 liter autoclave equipped with a stirrer was charged with 1866 g of Na ₂ S · 2.8H ₂ O and 5 liters of N-methyl-2-pyrrolidone (hereinafter referred to as NMP) and gradually heated to 205 ° C. while stirring under a nitrogen stream. The temperature was raised and 407 g of water was distilled off. After cooling the system to 140 ° C., 2280 g of p-dichlorobenzene and 1500 g of NMP were added, and the system was sealed under a nitrogen stream. The system was heated to 225 ° C. and polymerized at 225 ° C. for 2 hours. After completion of the polymerization, the mixture was cooled to room temperature, and the polymer was isolated using a centrifuge. The polymer was washed repeatedly with warm water and dried at 100 ° C. for a whole day and night to obtain poly (p-phenylene sulfide).

  The melt viscosity of the obtained poly (p-phenylene sulfide) (PPS (a-1)) was 110 poise.

  Further, PPS (a-1) was heat-cured at 235 ° C. in an air atmosphere.

  The melt viscosity of the obtained poly (p-phenylene sulfide) (PPS (a-2)) was 300 poise.

<Synthesis Example 2 (Synthesis of PPS (a-3))>
A 15 liter titanium autoclave equipped with a stirrer was charged with 3232 g of NMP, 1682 g of a 47% aqueous solution of sodium hydrogen sulfide and 1142 g of a 48% aqueous solution of sodium hydroxide. The temperature was gradually raised to 200 ° C. while stirring under a nitrogen stream, and 1360 g of water was added. Distilled. The system was cooled to 170 ° C., 2118 g of p-dichlorobenzene and 1783 g of NMP were added, and the system was sealed under a nitrogen stream. The system was heated to 225 ° C., polymerized at 225 ° C. for 1 hour, then heated to 250 ° C. and polymerized at 250 ° C. for 2 hours. Furthermore, 451 g of water was injected at 250 ° C., the temperature was raised again to 255 ° C., and polymerization was carried out at 225 ° C. for 2 hours. After completion of the polymerization, the mixture was cooled to room temperature, and the polymerization slurry was subjected to solid-liquid separation. The polymer was washed successively with NMP, acetone and water, and dried at 100 ° C. overnight to obtain poly (p-phenylene sulfide).

  The obtained poly (p-phenylene sulfide) (PPS (a-3)) was linear, and its melt viscosity was 350 poise.

  Evaluation and measurement methods used in Examples and Comparative Examples are shown below.

~ Measurement of tracking resistance ~
A disk-shaped test piece having a diameter of 50 mm and a thickness of 3 mm was produced by injection molding, and a comparative tracking index (hereinafter referred to as CTI) was measured using the test piece according to ICE112.

~ Measurement of bending strength ~
A test piece having a length of 127 mm, a width of 12.7 mm, and a thickness of 3.2 mm was prepared by injection molding, and the bending strength was measured using the test piece according to ASTM D-790 Method-1 (three-point bending method). did. The measuring device was (trade name) AG-5000B (manufactured by Shimadzu Corporation), and the test was performed under the test conditions of a distance between fulcrums of 50 mm and a measurement speed of 1.5 mm / min.

~ Measurement of tensile strength ~
A No. 1 test piece of ASTM D-638 was prepared by injection molding, and the tensile strength was measured using the test piece according to ASTM D-638. Using a measuring device (manufactured by Shimadzu Corporation, (trade name) AG-5000B), the test was performed under the test conditions of a distance between chucks of 110 mm and a measurement speed of 5 mm / min.

~ Measurement of bar flow length ~
The bar flow length (hereinafter referred to as BFL) was measured as an index of melt fluidity. An injection molding machine (manufactured by Sumitomo Heavy Industries, Ltd., (trade name) SE75) is mounted with a mold having a groove with a depth of 1 mm and a width of 10 mm, and the cylinder temperature is 310 ° C. and the injection pressure is The polyarylene sulfide composition was charged into a hopper of the injection molding machine set to 190 MPa, injection speed maximum, injection time 1.5 seconds, and mold temperature set to 135 ° C., and injected. And the length which melted and flowed the spiral groove | channel in a metal mold | die was measured as BFL.

Example 1
Compounded at a rate of 52.0 wt% PPS (a-2), 1.3 wt% acid amide wax (b2-1) and 46.7 wt% surface-treated magnesium hydroxide (c2-1), 310 ° C. To a hopper of a twin screw extruder (manufactured by Toshiba Machine, (trade name) TEM-35-102B). On the other hand, the glass fiber (d1-1) is put into the hopper of the side feeder of the twin screw extruder, melted and kneaded at a screw rotational speed of 200 rpm, and the molten composition flowing out from the die is cooled and cut into pellets. A polyarylene sulfide composition was prepared. The composition ratio of the polyarylene sulfide composition at that time was PPS (a-2) / acid amide wax (b2-1) / surface-treated magnesium hydroxide (c2-1) / glass fiber (d1-1) = 39 / It was 1/35/25 (wt%).

  The polyarylene sulfide composition is put into a hopper of an injection molding machine (manufactured by Sumitomo Heavy Industries, Ltd., (trade name) SE75) heated to 310 ° C., a disk-shaped test piece for measuring CTI, and bending strength is measured. The test piece for carrying out and the test piece for measuring the tensile strength were each shape | molded. Furthermore, BFL was measured. These results are shown in Table 1.

  The obtained polyarylene sulfide composition had high CTI, bending strength, and tensile strength. Further, the BFL was sufficiently large, and the melt fluidity of the composition was excellent.

Examples 2-10
PPS (a-1, 2, 3), carnauba wax (b1-1), acid amide wax (b2-1), surface untreated magnesium hydroxide (c1-1), surface treated magnesium hydroxide (c2-1, 2) A polyarylene sulfide composition was prepared in the same manner as in Example 1 except that the glass fiber (d1-1) and talc were mixed in the proportions shown in Table 1. By the same method as in Example 1, evaluated. The evaluation results are shown in Table 1.

  All the obtained polyarylene sulfide compositions had high CTI, flexural strength and tensile strength, and BFL was sufficiently large.

比較例１〜６
ＰＰＳ（ａ−２、３）、カルナバワックス（ｂ１−１）、表面処理水酸化マグネシウム（ｃ２−１，２）、ガラス繊維（ｄ１−１）及びタルクを表２に示す配合割合とした以外は、実施例１と同様の方法によりポリアリーレンスルフィド組成物を作製し、実施例１と同様の方法により評価した。評価結果を表２に示す。

Comparative Examples 1-6
Except that PPS (a-2, 3), carnauba wax (b1-1), surface-treated magnesium hydroxide (c2-1, 2), glass fiber (d1-1) and talc were mixed in the proportions shown in Table 2. A polyarylene sulfide composition was prepared by the same method as in Example 1, and evaluated by the same method as in Example 1. The evaluation results are shown in Table 2.

  The compositions not containing magnesium hydroxide (c) obtained in Comparative Examples 1 and 2 had low CTI. Moreover, the composition which does not mix | blend the carnauba wax (b1) and / or carboxylic acid amide type | system | group wax (b2) which were obtained by the comparative examples 3 and 4 had low CTI and BFL. Furthermore, the composition which did not mix | blend (d) fibrous filler obtained by Comparative Examples 5 and 6 had low bending strength and tensile strength.

Claims (3)

  Polyarylene sulfide (a) 20 to 50% by weight, carnauba wax (b1) and / or carboxylic acid amide wax (b2) 0.05 to 5% by weight, magnesium hydroxide (c) 20 to 70% by weight, and fiber A polyarylene sulfide composition comprising 10 to 60% by weight of a filler (d).   The polyarylene sulfide composition according to claim 1, wherein the carboxylic acid amide wax is a polycondensate composed of stearic acid, sebacic acid, and ethylenediamine. The magnesium hydroxide (c) is magnesium hydroxide (c1) not subjected to surface treatment and / or magnesium hydroxide (c2) surface-treated with a silane coupling agent. Or the polyarylene sulfide composition in any one of 2.