JP2000001615A - Polyarylene sulfide resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a polyarylene sulfide resin composition having excellent balance of physical properties between dimensional accuracy and mechanical strength. SOLUTION: This polyarylene sulfide resin composition comprises (A) 10-30 wt.% of a polyarylene sulfide having <=80 Pa.sec melt viscosity at 300 deg.C at 500 sec-1 shear rate, (B) 15-35 wt.% of a fibrous filler having 1-5 μm average fiber diameter and <=20 aspect ratio and (C) 40-65 wt.% of a spherical silica.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a polyarylene sulfide resin composition. More specifically, the present invention relates to a polyarylene sulfide resin composition comprising a polyarylene sulfide, a fibrous filler, and spherical silica, and particularly suitable as a material for precision parts.

[0002]

2. Description of the Related Art Conventionally, in the field of optical communications, epoxy resin compositions filled with silica have been used for precision parts such as connector ferrules for optical fibers. But,
This composition had problems peculiar to thermosetting resins, such as a long molding cycle and difficulty in recycling.

On the other hand, a polyarylene sulfide (PAS) resin composition of a thermoplastic resin has been proposed.
For example, Japanese Patent Application Laid-Open No. 57-196208 proposes a resin composition in which spherical silica is filled in PAS, and Japanese Patent Application Laid-Open No. 6-299072 discloses a method in which silica surface-treated with a silane coupling agent is used in PAS. Filled resin compositions have been proposed. Reissued patent WO95 / 2577
No. 0 proposes a resin composition in which PAS is filled with whiskers and spherical silica. However, even with these proposals, the balance between dimensional accuracy and mechanical strength was still not sufficient.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a polyarylene sulfide resin composition in which physical properties such as dimensional accuracy and mechanical strength are balanced.

[0005]

Means for Solving the Problems The present inventors have found that the use of ordinary whiskers as a component of the polyarylene sulfide resin composition causes a large increase in viscosity, making molding difficult, and anisotropy of molded articles. Therefore, the object of the present invention cannot be achieved because of the large diameter of the whisker.
) and an aspect ratio (average of 30 or more), and found that a fibrous filler having an average fiber diameter and an average aspect ratio in place of this whisker was effective, and completed the present invention described below. I let it.

That is, the present invention provides the following. (1) (A) Resin temperature 300 ° C, shear rate 500sec
15-1% by weight of a polyarylene sulfide having a melt viscosity at ^-1 of 80 Pa · sec or less, (B) 10-35% by weight of a fibrous filler having an average fiber diameter of 1-5 μm and an aspect ratio of 20 or less. And (C) a polyarylene sulfide resin composition comprising 40 to 65% by weight of spherical silica. (2) The polyarylene sulfide resin composition according to the above (1), wherein the fibrous filler is 25 to 35% by weight. (3) The polyarylene sulfide resin composition according to the above (1) or (2), wherein the fibrous filler is a calcium silicate fiber. (4) The polyarylene sulfide resin composition according to any one of (1) to (3), wherein the fibrous filler and / or spherical silica is surface-treated with a silane compound. (5) The silane compound is used in an amount of 0.3 to 3.0 per 100 parts by weight of the total of the components (A), (B) and (C).
The polyarylene sulfide resin composition according to any one of the above (1) to (3), added by part by weight. (6) The roundness of the inner diameter of a cylindrical molded product is 0.
8 μm or less, the coefficient of linear expansion (in both MD and TD directions) is 1.5 × 10 ⁻⁵ / K or less, and the tensile strength and
A polyarylene sulfide resin composition having a flexural strength and a flexural modulus of 60 MPa or more, 100 MPa or more, and 18 GPa or more, respectively.

[0007]

DETAILED DESCRIPTION OF THE INVENTION [(A) Polyarylene sulfide] The polyarylene sulfide used in the present invention has a structural formula [-Ar-S-] (where Ar is an arylene group, S
Is sulfur) 70 mol%
Among the polymers contained above, a typical example is the following structural formula (I)

[0008]

Embedded image

(Wherein R ¹ is selected from an alkyl group having 6 or less carbon atoms, an alkoxy group, a phenyl group, a carboxylic acid or a metal salt thereof, an amino group, a nitro group, and a halogen atom such as fluorine, chlorine and bromine. M is 0
-4. N represents the average degree of polymerization.
It is in the range of 3 to 30. 7)
It is a polyarylene sulfide having 0 mol% or more.

[0010] When the content of the repeating unit is less than 70 mol%, the original crystalline component characteristic of a crystalline polymer is small, and the mechanical strength may be insufficient. Further, a copolymer may be used in addition to a homopolymer. Meta-phenylene sulfide unit,
Orthophenylene sulfide unit, pp'-diphenylene ketone sulfide unit, pp'-diphenylene sulfone sulfide, pp'-biphenylene sulfide unit, pp'-diphenylene methylene sulfide unit, pp ' -Diphenylene cumenyl sulfide unit,
And a naphthyl sulfide unit.

The molecular structure may be any of a linear structure, a branched structure and a crosslinked structure. That is, as the polyarylene sulfide of the present invention, in addition to a polymer having a substantially linear structure, 3
A polymer having a branched structure or a crosslinked structure polymerized by using a small amount of a monomer having two or more functional groups can also be used. Further, it may be blended with the above-mentioned polymer having a substantially linear structure and used.

Further, as the polyarylene sulfide used in the present invention, it is also possible to use a polymer having a relatively linear low molecular weight polymer having a substantially linear structure, the melt viscosity of which is increased by oxidative crosslinking or thermal crosslinking to improve the moldability. it can. The polyarylene sulfide used in the present invention can be produced by a known method. For example, it can be obtained by subjecting a dihalo aromatic compound and a sulfur source to a polycondensation reaction in an organic polar solvent, washing and drying.

The polyarylene sulfide used in the present invention must have a melt viscosity at a resin temperature of 300 ° C. and a shear rate of 500 sec ⁻¹ of 80 Pa · sec or less, preferably 60 Pa · sec or less. 80P
If it is larger than a · sec, the fluidity will decrease, the viscosity during granulation will increase too much, and extrusion will not be possible. The method for measuring the melt viscosity will be described later.

[(B) Fibrous Filler] The fibrous filler used in the present invention may be of any material as long as the fiber has an average fiber diameter of 1 to 5 μm and an aspect ratio of 20 or less. However, those having a specific gravity of 3.5 or less are preferable. If the average fiber diameter is smaller than 1 μm, the melt viscosity rises sharply and molding becomes difficult. However, if the average fiber diameter is larger than 5 μm, the strength and surface smoothness decrease and become insufficient. When the aspect ratio is larger than 20, the anisotropy increases. As the fibrous filler used in the present invention, silicon carbide fiber, silicon nitride fiber,
Calcium silicate fiber, aluminum silicate fiber, potassium titanate, aluminum borate fiber, magnesium pyroborate fiber, magnesia fiber, basic magnesium sulfate fiber, zinc oxide fiber, alumina fiber, titanium oxide fiber, titanium diboride fiber, etc. Among them, calcium silicate fibers can be preferably used.

The fibrous filler used in the present invention is preferably one which has been surface-treated with a coupling agent, preferably a silane compound such as aminosilane, vinylsilane, phenylsilane, epoxysilane or other silane coupling agents.

[(C) Spherical Silica] The spherical silica used in the present invention may be either fused silica (amorphous silicon dioxide) or crystalline silica (quartz, tridymite, cristobalite, etc.), and both are mixed. May be done. Spherical particles having a particle size of 30 μm or less are preferred. Preferably it is 10 μm or less, more preferably 6 μm or less. If the particle size exceeds 30 μm, the mechanical strength of the molded product may be reduced. Further, as the spherical silica used in the present invention, a coupling agent, preferably an aminosilane,
Those which have been surface-treated with a silane compound such as vinyl silane, phenyl silane, epoxy silane or other silane coupling agents are preferred. Among them, a vinylsilane coupling agent is particularly preferred. The surface-treated product is expected to have the effect of improving the mechanical strength of the molded product and improving the hygroscopicity, thereby increasing the dimensional stability.

[Blending] The polyarylene sulfide resin composition of the present invention comprises (A) 15 to 30% by weight of polyarylene sulfide, (B) 10 to 35% by weight of fibrous filler, and (C) 40 to 40% of spherical silica. 65% by weight, preferably (A) 18 to 28% by weight of polyarylene sulfide,
It is manufactured by blending (B) 25 to 35% by weight of a fibrous filler and (C) 45 to 55% by weight of spherical silica.

When the content of the polyarylene sulfide (A) is less than 15% by weight, the melt viscosity increases and the moldability decreases. If it exceeds 30% by weight, the dimensional accuracy of the molded product will be reduced, and it will be insufficient. Further, if the fibrous filler (B) is less than 10% by weight, the mechanical strength of the molded article is reduced, and if it exceeds 35% by weight, the anisotropy of the molded article is increased, and the dimensional accuracy of the molded article is reduced. . (C) If the amount of the spherical silica is less than 40% by weight, the dimensional accuracy of the molded article decreases, and if it exceeds 65% by weight, the mechanical strength of the molded article decreases.

Further, a coupling agent, preferably aminosilane, vinylsilane, phenylsilane, epoxysilane, other silane coupling agent, etc., may be added to the resin composition comprising the components (A), (B) and (C). 0.3 to 3.0 parts by weight, based on 100 parts by weight of the total of the component (A), the component (B) and the component (C),
Preferably, 0.5 to 1.5 parts by weight can be added and used. In particular, when the components (B) and (C) are not previously silane-coated, it is significant to add them later.

Therefore, if the amount of the silane compound is less than 0.3 part by weight, the mechanical strength of the molded article cannot be expected to be improved. If the amount exceeds 3.0 parts by weight, the melt viscosity increases.
Moldability decreases. To the polyarylene sulfide resin composition of the present invention, other components are added as necessary, in addition to the above-mentioned components, as long as the effects of the present invention are not impaired.
You may mix. Other components include, for example, various additives such as antioxidants, weathering agents, lubricants, plasticizers, antistatic agents, coloring agents, polyamides, epoxy resins, silicone resins, silicone oils, polyolefins, polyether sulfones, and polyphenylenes. Examples thereof include thermoplastic resins and / or thermosetting resins such as ether, hydrogenated SBS, hydrogenated NBR, rubbers such as silicone rubber and fluororubber, and pigments.

The polyarylene sulfide resin composition of the present invention is prepared by blending the above-mentioned components (A), (B) and (C) with a silane compound and various additives as required, and Screw extruder, etc., usually 28
It can be obtained by melt-kneading at 0 to 350 ° C. The polyarylene sulfide resin composition of the present invention,
Has extremely high dimensional accuracy and mechanical strength. Although the measuring method of the dimensional accuracy will be described later, assuming that the dimensional accuracy is applied to an optical connector ferrule for optical communication, the roundness of the inner diameter is evaluated using a cylindrical molded product, and is 0.8 μm.
It is as follows. Further, the coefficient of linear expansion is 1.5 × 10 ⁻⁵ / K or less in both the MD and TD directions. Further, as the mechanical strength, the tensile strength, the bending strength, and the bending elastic modulus are 60 MPa or more, 100 MPa or more, and 18 GPa or more, respectively.

Since the polyarylene sulfide resin composition of the present invention has extremely high dimensional accuracy and mechanical strength, it is suitably used for various precision machine parts.
In particular, it can be used for a connector ferrule of an optical fiber in the field of optical communication, a housing for an endoscope end portion in which a microlens is embedded at the end of an optical fiber, a sealing material for a laser diode or a photosensor.

[0023]

EXAMPLES The present invention will be described in further detail with reference to Examples. In addition, the test method used in an Example is as follows. (1) Measurement of Melt Viscosity Using a Capillograph (manufactured by Toyo Seiki Co., Ltd.), the melt viscosity (Pa · sec) is measured at a resin temperature of 300 ° C. and a shear rate of 500 sec ⁻¹ . (2) Measurement of mechanical strength Using a 50t injection molding machine (manufactured by Nippon Tsunasho), resin temperature 3
A test piece was prepared at 30 ° C. and a mold temperature of 135 ° C.
Measure according to Tensile strength: Measured according to ASTM D638. Flexural strength: Measured according to ASTM790. Flexural modulus: Measured according to ASTM D790. (3) Measurement of Spiral Flow Using a 30 t injection molding machine (manufactured by Toshiba Machine Co., Ltd.), using a spiral flow mold having a thickness of 1 mm, the flow length at a resin temperature of 320 ° C., a mold of 135 ° C., and an injection pressure of 1000 kg / cm ^2. (Mm) is measured. (4) Measurement of linear expansion coefficient A flat plate (80 × 80 × 3.2 mmt) is injection-molded, and a 12 × 8 × 3.2 mmt sample piece is sampled from the center of the flat plate in the flow direction (MD) and its perpendicular direction (TD). And a linear expansion coefficient (1) in a measurement temperature range of 0 to 50 ° C. by a TMA method (TMA-120C manufactured by Seiko Instruments Inc.).
0 ^-5 / K). (5) Measurement of dimensional accuracy Molded product shown in FIG. 1 (inner diameter 1.6 mmφ, outer diameter 3.5 mm
φ, length 15mm, flange outer diameter 6.5mmφ, flange thickness 1.6mm) at resin temperature 330 ° C, mold temperature 13
After injection molding at 5 ° C. and standing at room temperature for 24 hours, the roundness (μm) of the inner diameter is measured by a roundness measuring device (RA-426 made by Mitutoyo).

Example 1 After the following components (a), (b) and (c) were uniformly mixed using a Henschel mixer, the resin temperature was 300 to 350 using a twin screw extruder (TEM 35B). The mixture was melted and kneaded at ℃ to obtain pellets. Using the obtained pellets, spiral flow length, mechanical strength, linear expansion coefficient, dimensional accuracy, and overall evaluation were made.
The evaluation results are shown in Table 1. (A) Polyphenylene sulfide (Idemitsu Petrochemical Co., Ltd.)
IPC-1) (referred to as "PPS-1") having a content of 20% by weight and a melt viscosity of 10 Pa · sec at a resin temperature of 300 ° C. and a shear rate of 500 sec ⁻¹ (b) As a fibrous filler The calcium silicate fiber treated with aminosilane (NYGLO manufactured by NYCO) is used.
S specific gravity 2.9) The content is 30% by weight, the average fiber diameter is 3 μm, and the aspect ratio is 10
(C) spherical silica (untreated surface: average particle size 0.5 μm)
Admatex SO-C2) (referred to as "Silica-1") Content is 50% by weight

Example 2 In Example 1, γ-glycidoxypropyltrimethoxylane (SH6040 manufactured by Dow Corning Toray Silicone Co., Ltd.) was additionally used as an epoxysilane, as components (a) and (b). A resin composition sample was prepared in the same manner as above except that 1 part by weight was added to the total of 100 parts by weight of the components (c) and the components were evaluated in the same manner. Table 1 shows the evaluation results.

Example 3 A resin composition sample was prepared in the same manner as in Example 1 except that the component (c) was changed to the following, and evaluated in the same manner. Table 1 shows the evaluation results. (C) Spherical silica (Surface vinyl silane treated product: average particle size 0.5 μm, SO-C2 / vinyl silane manufactured by Admatechs) (referred to as “silica-2”)

Example 4 In Example 1, the components (a) and (c) were replaced with the following component (a) and two types of (c)
A resin composition sample was prepared in the same manner except that the components were replaced, and evaluated in the same manner. Table 1 shows the evaluation results. (A) Polyphenylene sulfide (Idemitsu Petrochemical Co., Ltd.)
(C1) spherical silica (surface vinyl silane) having a content of 25% by weight and a melt viscosity of 30 Pa · sec at a resin temperature of 300 ° C. and a shear rate of 500 sec ⁻¹ Treated product: average particle size: 0.5 μm SO-C2 / vinylsilane manufactured by Admatechs (referred to as “silica-2”) The content is 20% by weight. (C2) Spherical silica (surface vinylsilane treated product: average particle size: 5 μm) Tatsumori TSS-6 / vinyl silane)
(Referred to as “silica-3”) 25% by weight

Example 5 In Example 1, the components (a) and (c) were replaced with the following component (a) and two types of (c)
A resin composition sample was prepared in the same manner except that the components were replaced, and evaluated in the same manner. Table 1 shows the evaluation results. (A) Polyphenylene sulfide (Idemitsu Petrochemical Co., Ltd.)
(C1) spherical silica (surface vinyl silane) having a content of 25% by weight and a melt viscosity of 30 Pa · sec at a resin temperature of 300 ° C. and a shear rate of 500 sec ⁻¹ Treated product: average particle size 0.5 μm SO-C2 / vinylsilane manufactured by Admatechs (referred to as “silica-2”) The content is 20% by weight. (C2) Spherical silica (surface vinylsilane treated product: average particle size 6 μm) Denki Kagaku Kogyo FB-6D) ("Silica-
4 ”) 25% by weight

Example 6 In Example 1, the amount of the component (a) was adjusted to 25% by weight and the amount of the component (b) was adjusted to 25%.
A resin composition sample was prepared in the same manner except that the amount was changed to% by weight, and evaluated similarly. Table 1 shows the evaluation results.

Example 7 In Example 1, the amount of the component (a) was 25% by weight and the amount of the component (b) was 25.
% By weight, and a resin composition sample was prepared in the same manner as above except that the following two types of component (c) were used and evaluated in the same manner. Table 1 shows the evaluation results. (C1) Spherical silica (surface vinyl silane-treated product: average particle size 0.5 μm, SO-C2 / vinyl silane manufactured by Admatechs) (referred to as “silica-2”) The content is 22% by weight. (C2) Spherical silica (surface) Vinyl silane treated product: average particle size 5 μm TSS-6 / vinyl silane manufactured by Tatsumori Co.)
(Referred to as “silica-3”) Content is 28% by weight

Example 8 A resin composition was prepared in the same manner as in Example 1 except that the amount of the component (b) was changed to 15% by weight, and the following components (a) and two types of the components (c) were used. A sample was prepared and evaluated similarly. Table 1 shows the evaluation results. (A) Polyphenylene sulfide (Idemitsu Petrochemical Co., Ltd.)
(C1) spherical silica (surface vinyl silane) having a content of 25% by weight and a melt viscosity of 30 Pa · sec at a resin temperature of 300 ° C. and a shear rate of 500 sec ⁻¹ Treated product: average particle size 0.5 μm SO-C2 / vinylsilane manufactured by Admatechs (referred to as “silica-2”) The content is 25% by weight. (C2) Spherical silica (surface vinylsilane treated product: average particle size 5 μm) Tatsumori TSS-6 / vinyl silane)
(Referred to as "silica-3") Content is 35% by weight

Example 9 In Example 1, the amount of the component (a) was set to 25% by weight and the amount of the component (b) was set to 20%.
% By weight, and a resin composition sample was prepared in the same manner except that the component (c) was replaced with the following component (c), and the same evaluation was performed. Table 1 shows the evaluation results. (C) Spherical silica (product treated with surface vinyl silane: average particle size 5 μm, TSS-6 / vinyl silane manufactured by Tatsumori Co., Ltd.) (referred to as “silica-3”).

[Embodiment 10] In Embodiment 1, (a)
The compounding amount of the component is 18% by weight, and the compounding amount of the component (b) is 2
0% by weight, and the component (c) is replaced with the following two types of (c)
A resin composition sample was prepared in the same manner except that the components were replaced, and evaluated in the same manner. Table 1 shows the evaluation results. (C1) Spherical silica (surface vinyl silane-treated product: average particle size: 0.5 μm, SO-C2 / vinyl silane manufactured by Admatechs) (referred to as “silica-2”) The content is 20% by weight. (C2) Spherical silica (surface) Vinyl silane treated product: average particle size 6 μm FB-6D manufactured by Denki Kagaku Kogyo Co., Ltd.
4 ") The content is 42% by weight

[Embodiment 11] In Embodiment 1, (b)
A resin composition sample was prepared in the same manner except that the amount of the component was changed to 32% by weight, and the component (a) and the component (c) were replaced with the following component (a) and two types of the component (c). Was evaluated. Table 1 shows the evaluation results. (A) Polyphenylene sulfide (Idemitsu Petrochemical Co., Ltd.)
(C1) Spherical silica (surface vinyl silane) having a content of 28% by weight and a melt viscosity of 30 Pa · sec at a resin temperature of 300 ° C. and a shear rate of 500 sec ⁻¹ Treated product: average particle size 0.5 μm SO-C2 / vinylsilane manufactured by Admatechs (referred to as “silica-2”) The content is 20% by weight. (C2) Spherical silica (surface vinylsilane treated product: average particle size 6 μm) Denki Kagaku Kogyo FB-6D) ("Silica-
4 ") content is 20% by weight

[Embodiment 12] In Embodiment 1, (b)
A resin composition sample was prepared in the same manner except that the amount of the component was changed to 28% by weight and the component (a) and the component (c) were replaced with the following component (a) and the component (c). . Table 1 shows the evaluation results. (A) Polyphenylene sulfide (Idemitsu Petrochemical Co., Ltd.)
(C) spherical silica (surface vinyl silane) having a content of 25% by weight and a melt viscosity of 50 Pa · sec at a resin temperature of 300 ° C. and a shear rate of 500 sec ⁻¹ Processed product: average particle size 5 μm TSS-6 / vinylsilane manufactured by Tatsumori (referred to as “silica-3”) The content is 47% by weight

Comparative Examples 1 to 14 Examples 1 to 12
In the same manner, resin composition samples were prepared at the compounding ratios shown in Table 2 and evaluated in the same manner. Table 2 shows the evaluation results.

The following components are newly used in addition to the components (a), (b) and (c) used above. (A) Polyphenylene sulfide (L manufactured by Toprene Corporation)
N-2) (referred to as “PPS-4”) having a melt viscosity of 90 Pa · sec at a resin temperature of 300 ° C. and a shear rate of 500 sec ⁻¹ (b1) potassium titanate whisker (manufactured by Otsuka Chemical Co., Ltd.)
Tismo D specific gravity 3.3) (referred to as “whisker 1”) Average fiber diameter is 0.3 μm and aspect ratio is 30 (b2) Aluminum borate whisker (Alborex YS2A manufactured by Shikoku Chemicals Co., Ltd. Specific gravity 3. 0) (referred to as “whisker 2”) Average fiber diameter is 0.7 μm and aspect ratio is 30 (b3) Calcium carbonate whisker (Whiscal specific gravity 2.8, manufactured by Maruo Calcium Co., Ltd.) (referred to as “whisker 3”) The average fiber diameter is 0.8 μm and the aspect ratio is 28. (b4) Zonotorite (Zonoheige specific gravity 2.5 manufactured by Ube Materials Co., Ltd.) (referred to as “whisker 4”) The average fiber diameter is 0.3 μm, And (c) amorphous silica (epoxysilane surface-treated crushed silica: average particle size of 15 μm) FS-74C manufactured by Gaku Kogyo Co., Ltd.
/ Silane) (referred to as "silica-5")

[0038]

[Table 1]

[0039]

[Table 2]

[0040]

According to the present invention, the moldability is good, the dimensional accuracy is extremely high, and the mechanical strength is excellent.
In comparison with the resin composition using whiskers (prior art), the flowability is high and the filler can be filled in a large amount.
A precision molded part having higher dimensional accuracy (roundness) and low coefficient of linear expansion (dimensional stability) can be obtained. Further, for a composition highly filled with only amorphous silica,
A precision molded part having a high strength and a low coefficient of linear expansion can be obtained while maintaining the same dimensional accuracy, and its advantages are obvious.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a molded product for measuring roundness.

[Explanation of symbols]

 1: inner diameter 2: outer diameter 3: flange outer diameter 4: length

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4J002 CN011 DE077 DE107 DE137 DE147 DE187 DF017 DG047 DJ007 DJ016 DK007 FA047 FA086 FB096 FB097 FB106 FB107 FB136 FB137 FB146 FB147 FD016 FD017 GP00 GP02

Claims (6)

[Claims] 1. A resin temperature of 300 ° C. and a shear rate of 50
15-30% by weight of a polyarylene sulfide having a melt viscosity at 0 sec ^-1 of 80 Pa · sec or less, (B) 10-35% by weight of a fibrous filler having an average fiber diameter of 1-5 μm and an aspect ratio of 20 or less %, And (C) 40 to 65% by weight of spherical silica. 2. The polyarylene sulfide resin composition according to claim 1, wherein the fibrous filler is 25 to 35% by weight. 3. The polyarylene sulfide resin composition according to claim 1, wherein the fibrous filler is a calcium silicate fiber. 4. The polyarylene sulfide resin composition according to claim 1, wherein the fibrous filler and / or spherical silica is surface-treated with a silane compound. 5. The silane compound is used in an amount of 0.3 to 0.3 parts per 100 parts by weight of the total of the components (A), (B) and (C).
The polyarylene sulfide resin composition according to any one of claims 1 to 3, wherein 3.0 parts by weight of the polyarylene sulfide resin composition is added. 6. A cylindrical molded product having a roundness of an inner diameter of 0.8 μm or less and a linear expansion coefficient (in both MD and TD directions) of 1.5 × 10 ⁻⁵ / K or less. Yes, and the tensile strength, flexural strength and flexural modulus are each 60MP
a, 100 MPa or more, 18 GPa or more polyarylene sulfide resin composition.