Resin compositions, injection molded articles, extruded articles, and press-molded articles

Abstract

Provided is a resin composition that contains an aromatic polyether and a crystalline inorganic fibrous material, and can obtain a molded product having good appearance and being lightweight. 【Solution means】A resin composition containing an aromatic polyether (A) and a crystalline inorganic fibrous material (B) and satisfying the following formula (E1). 8 < (η 0.1 / η 628 ) / n < 50 ··· (E1) [In formula (E1), η 0.1 means the melt viscosity [Pa·s] measured at an angular frequency of 0.1 [rad / s] when the resin composition is melted at 380°C. η 628 means the melt viscosity [Pa·s] measured at an angular frequency of 628 [rad / s] when the resin composition is melted at 380°C. n means the value obtained by multiplying the content [% by mass] of (B) in the resin composition by 0.1.]

Description

[Technical Field]

[0001] The present invention relates to a resin composition. More specifically, the present invention relates to a resin composition comprising an aromatic polyether and a crystalline inorganic fibrous material, injection molded articles, extruded articles, and press-molded articles. [Background technology]

[0002] Aromatic polyethers possess excellent heat resistance and mechanical strength, and due to these characteristics, they are used as metal substitutes. In recent years, their applications have expanded to include automobiles, aircraft, and semiconductor manufacturing equipment. Among them, polyetheretherketone (abbreviated as "PEEK"), a type of aromatic polyether, is known as a representative resin of super engineering plastics.

[0003] To improve the mechanical properties of resins, it is known to blend reinforcing fibers such as carbon fibers or glass fibers, or crystalline inorganic fibrous materials, with aromatic polyethers (Patent Documents 1 and 2). [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2003-154591 [Patent Document 2] Japanese Patent Publication No. 2004-244488 [Overview of the project] [Problems that the invention aims to solve]

[0005] However, achieving high rigidity and strength by incorporating reinforcing fibers such as carbon fibers or glass fibers requires the use of long reinforcing fibers, which results in a rough surface on the molded product and impairs its appearance. Furthermore, achieving high rigidity and strength by incorporating crystalline inorganic fibrous materials requires the inclusion of a large amount of inorganic fibrous material in the molded product, which presents challenges from a weight reduction perspective. One of the objectives of the present invention is to provide a resin composition that contains crystalline inorganic fibrous material and can produce molded articles that have a better appearance and are lighter than conventional aromatic polyether resin compositions. [Means for solving the problem]

[0006] As a result of diligent research, the inventors have discovered that a resin composition containing an aromatic polyether and a crystalline inorganic fibrous material, exhibiting specific melting properties, can produce molded articles with a better appearance and lighter weight compared to conventional aromatic polyether resin compositions, thus completing the present invention.

[0007] According to the present invention, the following resin compositions and the like can be provided. 1. A resin composition comprising an aromatic polyether (A) and a crystalline inorganic fibrous material (B), satisfying the following formula (E1). 8<(η 0.1 / η 628 ) / n<50···(E1) [In equation (E1), η 0.1 This refers to the melt viscosity [Pa·s] measured at an angular frequency of 0.1 [rad / s] when the resin composition is melted at 380°C. η 628 This refers to the melt viscosity [Pa·s] measured at an angular frequency of 628 [rad / s] when the resin composition is melted at 380°C. n represents the value obtained by multiplying the content [mass%] of (B) in the resin composition by 0.1. 2. The resin composition according to claim 1, wherein the crystalline inorganic fibrous material (B) has a fiber diameter of 10 μm or less and a fiber length of 100 μm or less. 3. For the aromatic polyether (A) mentioned above, the amount of radicals measured at 25°C using TEMPOL as the standard substance and benzene as the solvent for the standard substance was 6.5 × 10⁻⁶. 15 The resin composition according to 1 or 2 above, with a spin / g or higher. 4. The amount of radicals in the aforementioned resin composition was measured at 25°C using TEMPOL as the standard substance and benzene as the solvent for the standard substance, and was 6.5 × 10⁻⁶. 15 A resin composition according to any one of the above 1 to 3, wherein the spin / g is 1 or greater. 5. The resin composition according to any one of the above 1 to 4, wherein the mass ratio ((A) / (B)) of the aromatic polyether (A) to the crystalline inorganic fibrous material (B) is 99 / 1 to 50 / 50. 6. The resin composition according to any one of 1 to 5, wherein the aromatic polyether (A) comprises one or more selected from the group consisting of polyether ether ketone (PEEK), polyether ketone ketone (PEKK), and polyether ketone (PEK). 7. The resin composition according to any one of 1 to 6, wherein the crystalline inorganic fibrous material (B) comprises at least one selected from the group consisting of wollastonite, silicon carbide, titanium dioxide, and potassium titanate. 8. An injection-molded article, an extruded article, or a press-molded article made from the resin composition described in any of items 1 to 7 above. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a resin composition that contains an aromatic polyether and crystalline inorganic fibrous material, and that can produce a molded article with a good appearance and lightweight properties. [Modes for carrying out the invention]

[0009] The resin composition, injection-molded articles, extruded articles, and press-molded articles of the present invention will be described in detail below. In this specification, "x~y" represents a numerical range of "greater than or equal to x and less than or equal to y". The upper and lower limits specified for the numerical range can be combined in any way. Among the individual embodiments of the aspects according to the present invention described below, two or more that are not mutually contradictory can be combined with each other, and an embodiment obtained by combining two or more embodiments is also an embodiment of the aspect according to the present invention.

[0010] 1. Resin composition The resin composition according to one aspect of the present invention (hereinafter, also referred to as "the resin composition of the present invention") includes an aromatic polyether (A) (hereinafter, also referred to as "component (A)") and a crystalline inorganic fibrous material (B) (hereinafter, also referred to as "component (B)"), and is characterized by satisfying the following formula (E1). 8 < (η 0.1 / η 628 ) / n < 50 ··· (E1)

[0011] In formula (E1), η 0.1 means the melt viscosity [Pa·s] measured at an angular frequency of 0.1 [rad / s] when the resin composition is melted at 380°C. η 628 means the melt viscosity [Pa·s] measured at an angular frequency of 628 [rad / s] when the resin composition is melted at 380°C. n means the value obtained by multiplying the content [% by mass] of (B) in the resin composition by 0.1.

[0012] By having the above configuration, the resin composition of the present invention can obtain a molded product with good appearance and light weight.

[0013] In this specification, "good appearance" of a molded product means that the surface of the molded product is smooth.

[0014] In one embodiment, "good appearance" of a molded product means that the surface roughness of the molded product (molded body) obtained by molding the resin composition is 0.40 μm or less. The surface roughness of the molded product (molded body) is preferably 0.30 μm or less, more preferably 0.27 μm or less, and even more preferably 0.25 μm or less. The lower limit of the surface roughness of the molded product (molded body) is not particularly limited, but for example, it is 0 μm or more, or 0.01 μm or more. The surface roughness of a molded product (molded body) can be measured by the method described in the examples. A surface roughness of 0 μm includes cases where the surface roughness of the molded product is below the measurable limit.

[0015] In this specification, "lightweight" of the resin composition of the present invention means that the resin composition of the present invention is lighter when compared to a conventional resin composition containing an aromatic polyether and crystalline inorganic fibrous material, while having the same mechanical properties. Compared to conventional resin compositions, the resin composition of the present invention can achieve superior mechanical properties with a smaller mass of component (B). In other words, because less mass of the resin composition is required to achieve the same mechanical properties, weight reduction can be achieved.

[0016] In this specification, the mechanical properties of a resin composition are evaluated by the strength and rigidity of the resin composition.

[0017] In this specification, the strength of a resin composition (sometimes referred to as "mechanical strength") is evaluated by its tensile strength. The tensile strength of a resin composition can be measured by the method described in the examples.

[0018] In one embodiment, the tensile strength of the resin composition is 60 MPa or more, 65 MPa or more, 70 MPa or more, 75 MPa or more, 80 MPa or more, 85 MPa or more, 90 MPa or more, 95 MPa or more, 100 MPa or more, 105 MPa or more, 110 MPa or more, 115 MPa or more, 120 MPa or more, 125 MPa or more, 130 MPa or more, 135 MPa or more, 140 MPa or more, 145 MPa or more, 150 MPa or more, or 155 MPa or more. In one embodiment, the upper limit of the tensile strength of the resin composition is not particularly limited, but is, for example, 300 MPa or less.

[0019] In one embodiment, the tensile strength of the resin composition is 60 MPa to 300 MPa, 70 MPa to 300 MPa, 80 MPa to 300 MPa, 85 MPa to 300 MPa, 90 MPa to 300 MPa, 95 MPa to 300 MPa, 100 MPa to 300 MPa, 120 MPa to 300 MPa, 150 MPa to 300 MPa, 155 MPa to 300 MPa, 125 MPa to 200 MPa, or 130 MPa to 180 MPa.

[0020] In this specification, the stiffness of a resin composition is evaluated by its tensile modulus. The tensile modulus of a resin composition can be measured by the method described in the examples.

[0021] In one embodiment, the tensile modulus of the resin composition is 6.0 GPa or higher, 7.0 GPa or higher, 7.5 GPa or higher, 8.0 GPa or higher, 8.5 GPa or higher, 10.0 GPa or higher, 11.5 GPa or higher, or 15.0 GPa or higher. In one embodiment, the tensile modulus of the resin composition is not particularly limited, but is, for example, 30.0 GPa or less.

[0022] In one embodiment, the tensile modulus of the resin composition is 6.0 GPa or more and 30.0 GPa or less, 7.0 GPa or more and 30.0 GPa or less, 7.5 GPa or more and 30.0 GPa or less, 8.0 GPa or more and 30.0 GPa or less, 8.0 GPa or more and 20.0 GPa or less, 8.5 GPa or more and 30.0 GPa or less, 10.0 GPa or more and 30.0 GPa or less, 10.0 GPa or more and 20.0 GPa or less, 11.5 GPa or more and 30.0 GPa or less, or 15.0 GPa or more and 30.0 GPa or less.

[0023] In one embodiment, the specific strength of the resin composition is 60 kN·m / kg or more and 300 kN·m / kg or less, 65 kN·m / kg or more and 200 kN·m / kg or less, 70 kN·m / kg or more and 180 kN·m / kg or less, or 85 kN·m / kg or more and 180 kN·m / kg or less.

[0024] The specific strength of the resin composition can be measured by the method described in the examples.

[0025] In one embodiment, the specific modulus of the resin composition is 5.0 × 10⁻⁶ 3 kN m / kg or more 30×10 3 kN m / kg or less, 5.5×10 3 kN m / kg or more 20×10 3 kN m / kg or less, 6.0×10 3 kN m / kg or more 20×10 3 kN·m / kg or less, or 6.5 × 10 3 kN m / kg or more 20×10 3 It is less than or equal to kN·m / kg.

[0026] The specific modulus of the resin composition can be measured by the method described in the examples.

[0027] The resin composition of the present invention satisfies the above formula (E1). (η 0.1 / η 628 ) / n is a parameter representing melt viscoelasticity, and is defined by the melt viscosity at a low angular frequency (0.1 [rad / s]), the melt viscosity at a high angular frequency (628 [rad / s]), and the content [mass%] of (B) in the resin composition. (η 0.1 / η 628 ) / n is measured by the method described in the examples.

[0028] (η 0.1 / η 628 A value of ) / n greater than 8 means that the melt viscosity is low in the high-angle frequency region and high in the low-angle frequency region. Here, the angular frequency corresponds to the shear rate, so (η 0.1 / η 628 A value of ) / n greater than 8 can be rephrased as indicating low melt viscosity in the high shear region and high melt viscosity in the low shear region. In resin compositions exhibiting such melt viscoelasticity, the high shear rate during injection molding facilitates the flow of the resin composition, leading to a high degree of orientation of the crystalline inorganic fibrous material in the flow direction. Furthermore, the interfacial adhesion between the inorganic fibrous material and the resin is thought to result in high rigidity and strength. Furthermore, the high degree of orientation of the crystalline inorganic fibrous material in the flow direction of the resin composition, and the interfacial adhesion between the inorganic fibrous material and the resin, reduce the surface roughness when manufacturing the molded article, making it easier to obtain a molded article with a good appearance.

[0029] Also, (η 0.1 / η 628 When ) / n is less than 50, the resin composition flows more easily into the flow path of the injection mold, which is thought to result in excellent moldability.

[0030] From the viewpoint of orientation of crystalline inorganic fibrous material (B), (η 0.1 / η 628 ) / n is 10 < (η 0.1 / η 628 It is preferable that ) / n satisfies 13 < (η 0.1 / η 628 It is more preferable that ) / n is satisfied.

[0031] From the viewpoint of the moldability of the resin composition, (η 0.1 / η 628 ) / n is (η 0.1 / η 628 It is preferable that ) / n < 40, and (η 0.1 / η 628 It is more preferable that ) / n < 30.

[0032] In one embodiment, (η 0.1 / η 628 ) / n is 10 < (η 0.1 / η 628 ) / n < 40. In one embodiment, (η 0.1 / η 628 ) / n is 13 < (η 0.1 / η 628 ) / n < 30. (η 0.1 / η 628 When ) / n falls within the above range, the effects of the present invention are more likely to be exhibited.

[0033] [Aromatic polyether (A)] The aromatic polyether (A) in the resin composition of the present invention is not particularly limited as long as it is an aromatic polyether, and can be appropriately selected from within the range commonly used in the field of resin compositions.

[0034] In one embodiment, the aromatic polyether (A) satisfies the following formula (E2). 800<η 2.76 / tanδ 2.76 <10000···(E2) [In equation (E2), η 2.76 This refers to the melt viscosity [Pa·s] measured at an angular frequency of 2.76 [rad / s] when the aromatic polyether is melted at 380°C. tanδ 2.76 This refers to the loss loss tangent measured at an angular frequency of 2.76 [rad / s] when the aromatic polyether is melted at 380°C. This refers to the melt viscosity [Pa·s] measured at an angular frequency of 628 [rad / s] when the resin composition is melted at 380°C.

[0035] The effects of the present invention are more easily exhibited when the aromatic polyether satisfies the above formula (E2). The reasons for such effects are not entirely clear, but the following are some possible explanations. Aromatic polyether (A) has a temperature of 800 < η 2.76 / tanδ 2.76Satisfying this condition means that elasticity contributes significantly. In aromatic polyethers (A) exhibiting such melt viscoelasticity, it is thought that excellent mechanical properties are exhibited due to the high dispersion of crystalline inorganic fibrous material (B) during melt mixing. Furthermore, aromatic polyether (A) is η 2.76 / tanδ 2.76 By satisfying the condition <10000, it is believed that the fracture of crystalline inorganic fibrous material (B) during melt kneading is suppressed, and by maintaining the fiber length, excellent mechanical properties are exhibited.

[0036] η of aromatic polyether (A) 2.76 / tanδ 2.76 It is measured by the method described in the examples.

[0037] From the viewpoint of dispersion of crystalline inorganic fibrous material (B), aromatic polyether (A) has a dispersion of 1000 < η 2.76 / tanδ 2.76 It is preferable that the following conditions be met, and 1200 < η 2.76 / tanδ 2.76 It is more preferable that the following conditions be met: 1500 < η 2.76 / tanδ 2.76 It is preferable to satisfy the conditions. Furthermore, from the viewpoint of fracture of crystalline inorganic fibrous material (B), aromatic polyether (A) is η 2.76 / tanδ 2.76 It is preferable that the value <8000 be satisfied, η 2.76 / tanδ 2.76 It is more preferable that the value be less than 5000. Therefore, from the viewpoint of both dispersion and fracture of crystalline inorganic fibrous material (B), aromatic polyether (A) is 1200 < η 2.76 / tanδ 2.76 It is preferable that the value <8000, and 1500 <η 2.76 / tanδ 2.76 It is more preferable that the value be less than 5000. η 2.76 / tanδ 2.76 When the range is as described above, the effects of the present invention are more likely to be exhibited.

[0038] In one embodiment, the radical amount of the aromatic polyether (A) is 6.5×10 15 spin / g or more.

[0039] The lower limit of the radical amount of the aromatic polyether (A) is 7.0×10 15 spin / g or more, 20×10 15 (2.0×10 16 )spin / g or more, 30×10 15 (3.0×10 16 )spin / g or more, 40×10 15 (4.0×10 16 )spin / g or more, or 50×10 15 (5.0×10 16 )spin / g or more may be. The upper limit of the radical amount of the aromatic polyether (A) is 9.0×10 17 spin / g or less, 5.0×10 17 spin / g or less, or 1.0×10 17 spin / g or less may be.

[0040] In one embodiment, the radical amount of the aromatic polyether (A) is 6.5×10 15 spin / g or more and 9.0×10 17 spin / g or less, 7.0×10 15 spin / g or more and 9.0×10 17 spin / g or less, 20×10 15 spin / g or more and 5.0×10 17 spin / g or less, 30×10 15 spin / g or more and 5.0×10 17 spin / g or less, 40×10 15 spin / g or more and 1.0×10 17 spin / g or less, or 50×10 15 spin / g or more and 1.0×10 17 spin / g or less.

[0041] The radical amount of the aromatic polyether (A) is 6.5×10 15When the spin / g value is above this, the aforementioned improvements in mechanical properties (strength, rigidity, etc.) are more likely to be achieved. On the other hand, the amount of radicals in aromatic polyether (A) is 9.0 × 10 17 When the spin / g value is below a certain level, sufficient thermal stability can be obtained, and the molded product is likely to exhibit sufficient mechanical properties.

[0042] The amount of radicals in aromatic polyether (A) can be increased to the range described above, for example, by using a monomer containing a chlorine atom as a reactive group (e.g., 4,4'-dichlorobenzophenone) as the monomer when synthesizing (polymerizing) aromatic polyether (A). The amount of radicals in aromatic polyether (A) is the value measured by the method described in the examples.

[0043] In one embodiment, the aromatic polyether (A) is a polyarylene ether ketone. For example, the aromatic polyether (A) includes one or more selected from the group consisting of polyether ether ketone (PEEK), polyether ketone ketone (PEKK), and polyether ketone (PEK).

[0044] In one embodiment, 50% or more by mass of aromatic polyether (A) is 60% or more by mass, 70% or more by mass, 80% or more by mass, 90% or more by mass, 95% or more by mass, 97% or more by mass, 99% or more by mass, 99.5% or more by mass, or substantially 100% by mass is one or more selected from the group consisting of PEEK, PEKK, and PEK. In one embodiment, 50% or more by mass of the aromatic polyether (A), 60% or more by mass, 70% or more by mass, 80% or more by mass, 90% or more by mass, 95% or more by mass, 97% or more by mass, 99% or more by mass, 99.5% or more by mass, or substantially 100% by mass is PEEK.

[0045] In one embodiment, the aromatic polyether (A) comprises a structural unit represented by the following formula (1) and a structural unit represented by the following formula (2). [ka]

[0046] In one embodiment, the aromatic polyether (A) includes a structural unit represented by the following formula (3). [ka]

[0047] The structural unit represented by equation (3) is a combination of the structural unit represented by equation (1) and the structural unit represented by equation (2).

[0048] In one embodiment, the aromatic polyether (A) does not contain any structures other than the structural units represented by formulas (1) and (2). However, as is obvious from the definition, it may also contain the structural unit represented by formula (3).

[0049] In one embodiment, the aromatic polyether (A) includes other structures other than the structural units represented by formulas (1) and (2), to the extent that the effects of the present invention are not impaired.

[0050] In one embodiment, 50% or more by mass of aromatic polyether (A) is 60% or more by mass, 70% or more by mass, 80% or more by mass, 90% or more by mass, 95% or more by mass, 97% or more by mass, 99% or more by mass, 99.5% or more by mass, or substantially 100% by mass is a structural unit represented by formula (1) and / or formula (2), or a structural unit represented by formula (3).

[0051] In one embodiment, in aromatic polyether (A), the molar ratio of structural units represented by formula (1) to structural units represented by formula (2) (structural units represented by formula (1):structural units represented by formula (2)) is 47.5:52.5~52.5:47.5, 48.0:52.0~52.0:48.0, 48.5:51.5~51.5:48.5, 49.0:51.0~51.0:49.0, or 49.5:50.5~50.5:49.5. The number of moles of the structural unit represented by equation (1) may be greater than, less than, or the same as the number of moles of the structural unit represented by equation (2).

[0052] The structural unit represented by formula (1) and the structural unit represented by formula (2) can be copolymerized to the extent that the effects of the present invention are not impaired.

[0053] In one embodiment, the aromatic polyether comprises a structural unit represented by the following formula (a) and one or more structural units selected from the group consisting of structures represented by the following formulas (b) and (c). [ka]

[0054] In one embodiment, an aromatic polyether can also be defined as a copolymer of a structural unit represented by formula (a) and one or more structural units selected from the group consisting of formulas (b) and (c).

[0055] In one embodiment, the copolymer is a random copolymer, an alternating copolymer, or a block copolymer, and is preferably a random copolymer.

[0056] In one embodiment, the substitution position (bonding position) of the phenyl group in the structural unit represented by formula (b) of the aromatic polyether can be any position on the benzene ring constituting the main chain, as shown on the far right in formula (b) (the phenyl group is introduced so as to substitute for any of the four hydrogen atoms on the benzene ring).

[0057] In an aromatic polyether, if there are two or more adjacent structural units represented by formula (b), the aromatic polyether may contain one or more structures selected from the group consisting of the structure represented by (b1), the structure represented by (b2), and the structure represented by (b3). [ka]

[0058] Each of the structures represented by formulas (b1) to (b3) above has different substitution positions of the phenyl group in the two structural units represented by formula (b) that form the structure. The effects of the present invention are well exhibited regardless of which of these structures is included.

[0059] Here, we have described the case where two or more structural units represented by formula (b) are adjacent to each other. However, even when two or more structural units represented by formula (b) are arranged via other structural units (for example, structural units represented by formula (a)), the substitution positions of the phenyl groups in these structural units represented by formula (b) may be the same or different. In either case, the effects of the present invention are well exhibited.

[0060] In one embodiment, 50% or more by mass of the aromatic polyether is 60% or more by mass, 70% or more by mass, 80% or more by mass, 90% or more by mass, 95% or more by mass, 97% or more by mass, 99% or more by mass, 99.5% or more by mass, or substantially 100% by mass is the structural unit represented by formula (a) and the structural unit represented by formula (b). Furthermore, in the case of "substantially 100% by mass," it is acceptable for unavoidable impurities to be present.

[0061] In one embodiment, the aromatic polyether has a molar ratio of the structural unit represented by formula (b) to the total amount of structural units represented by formula (a) and the structural unit represented by formula (b) of 1 mol% or more, 2 mol% or more, 3 mol% or more, 4 mol% or more, 5 mol% or more, 6 mol% or more, 7 mol% or more, or 8 mol% or more, and also 99 mol% or less, 90 mol% or less, 80 mol% or less, 70 mol% or less, 60 mol% or less, 50 mol% or less, or 40 mol% or less.

[0062] In one embodiment, 50% or more by mass of the aromatic polyether is 60% or more by mass, 70% or more by mass, 80% or more by mass, 90% or more by mass, 95% or more by mass, 97% or more by mass, 99% or more by mass, 99.5% or more by mass, or substantially 100% by mass is the structural unit represented by formula (a) and the structural unit represented by formula (c). Furthermore, in the case of "substantially 100% by mass," it is acceptable for unavoidable impurities to be present.

[0063] In one embodiment, the aromatic polyether has a molar ratio of the structural unit represented by formula (c) to the total amount of structural units represented by formula (a) and structural units represented by formula (c) of 1 mol% or more, 2 mol% or more, 3 mol% or more, 4 mol% or more, 5 mol% or more, 6 mol% or more, 7 mol% or more, or 8 mol% or more, and also 99 mol% or less, 90 mol% or less, 80 mol% or less, 70 mol% or less, 60 mol% or less, 50 mol% or less, or 40 mol% or less.

[0064] A structural unit represented by formula (a) and one or more structural units selected from the group consisting of structures represented by formulas (b) and (c) can be copolymerized to the extent that the effects of the present invention are not impaired.

[0065] In one embodiment, the aromatic polyether contains structural units represented by the following formula (a) and structural units represented by the following formula (d), and the radical amount at 25°C was measured using TEMPOL as the standard substance and benzene as the solvent of the standard substance, and was 6.5 × 10⁻⁶. 15 ~9.0×10 17 (spin / g)

[0066] [ka]

[0067] In one embodiment, the copolymer is a random copolymer, an alternating copolymer, or a block copolymer, and is preferably a random copolymer.

[0068] In one embodiment, the structural unit represented by formula (d) is the structural unit represented by formula (c).

[0069] The structural unit represented by formula (a) and the structural unit represented by formula (d) can be copolymerized to the extent that the effects of the present invention are not impaired.

[0070] In one embodiment, 50% or more by mass of the aromatic polyether is 60% or more by mass, 70% or more by mass, 80% or more by mass, 90% or more by mass, 95% or more by mass, 97% or more by mass, 99% or more by mass, 99.5% or more by mass, or substantially 100% by mass is the structural unit represented by formula (a) and the structural unit represented by formula (d). Furthermore, in the case of "substantially 100% by mass," it is acceptable for unavoidable impurities to be present.

[0071] In one embodiment, the aromatic polyether has a molar ratio of the structural unit represented by formula (d) to the total amount of structural units represented by formula (a) and structural units represented by formula (d) of 1 mol% or more, 2 mol% or more, 3 mol% or more, 4 mol% or more, 5 mol% or more, 6 mol% or more, 7 mol% or more, or 8 mol% or more, and also 99 mol% or less, 90 mol% or less, 80 mol% or less, 70 mol% or less, 60 mol% or less, 50 mol% or less, or 40 mol% or less.

[0072] The terminal structure of the main chain of aromatic polyether (A) is not particularly limited. In one embodiment, a structural unit represented by formula (1) is arranged at one or more ends of the main chain of an aromatic polyether (A). In this case, the end structure bonded to the structural unit may be a halogen atom. The halogen atom may be, for example, a chlorine atom (Cl) or a fluorine atom (F). In one embodiment, a structural unit represented by formula (2) is arranged at one or more ends of the main chain of an aromatic polyether (A). In this case, the terminal structure bonded to the structural unit may be, for example, a hydrogen atom (H) (when the terminal structure is a hydrogen atom (H), a hydroxyl group is formed together with the oxygen atom (O) in the structural unit). The terminal structure of the aromatic polyether (A) may be, for example, a structure in which the halogen atoms or hydroxyl groups mentioned above are replaced by hydrogen atoms (H), etc. Furthermore, the terminal structure may have structures other than those exemplified above.

[0073] [Crystalline inorganic fibrous material (B)] The crystalline inorganic fibrous material (B) in the resin composition of the present invention is not particularly limited as long as it is a crystalline inorganic fibrous material.

[0074] In this specification, "inorganic" means containing one or more elements selected from the group consisting of metallic elements, silicon, and boron. Anything that does not fall under the definition of "inorganic" in this specification is referred to as "organic." Therefore, in this specification, compounds containing carbon and silicon are treated as "inorganic," and for example, silicon carbide is included in "crystalline inorganic fibrous materials (B)."

[0075] In this specification, "crystalline" inorganic fibrous material means that it has a crystalline structure. Crystalline inorganic fibrous material can also be described as "a fiber containing inorganic material having a crystalline structure."

[0076] In this specification, "fibrous" broadly includes elongated shapes such as fibers, and is not particularly limited to straight or curved shapes. Furthermore, "fibrous" may refer to a hollow tube as long as it has a fiber-like shape.

[0077] For example, crystalline inorganic fibrous materials (B) include, but are not limited to, silicate minerals, carbon compounds, silicon compounds, and metal oxides.

[0078] For example, crystalline inorganic fibrous materials (B) include, but are not limited to, wollastonite, silicon carbide, titanium dioxide, and potassium titanate.

[0079] In one embodiment, the crystalline inorganic fibrous material (B) comprises at least one selected from the group consisting of wollastonite, silicon carbide, titanium dioxide, and potassium titanate.

[0080] For wollastonite, a wide range of conventionally known materials can be used. For example, "Fine Grade KGP-H45" (fiber diameter 1-10 μm, fiber length 10-50 μm) sold by Kansai Matec Co., Ltd. can be used.

[0081] A wide range of conventionally known silicon carbides can be used. For example, "SCW#1 50M" (fiber diameter 0.45~0.65 μm, fiber length 5~80 μm) sold by Tateho Chemical Industry Co., Ltd. is one such example.

[0082] A wide range of conventionally known titanium dioxide can be used. For example, "FTL-300" (average fiber diameter 0.27 μm, average fiber length 5.15 μm) sold by Ishihara Sangyo Co., Ltd. can be used.

[0083] Examples of potassium titanate include single crystal fibers represented by the general formula K2O·nTiO2 (where n is an integer from 2 to 8) or K2O·nTiO2·1 / 2H2O (where n is the same as above).

[0084] In one embodiment, the fiber diameter of the crystalline inorganic fibrous material (B) is 20 μm or less, 10 μm or less, 5 μm or less, 3 μm or less, 2 μm or less, 1 μm or less, or 0.5 μm or less. In one embodiment, the fiber diameter of the crystalline inorganic fibrous material (B) is 0.01 μm or larger, 0.05 μm or larger, 0.1 μm or larger, or 0.2 μm or larger.

[0085] The fiber diameter of crystalline inorganic fibrous material (B) can be measured by scanning electron microscopy (SEM) observation.

[0086] In one embodiment, the fiber length of the crystalline inorganic fibrous material (B) is 100 μm or less, 90 μm or less, 80 μm or less, 70 μm or less, 60 μm or less, 50 μm or less, 40 μm or less, 30 μm or less, 20 μm or less, 10 μm or less, 5 μm or less, or 1 μm or less. In one embodiment, the fiber length of the crystalline inorganic fibrous material (B) is 0.1 μm or more, or 0.2 μm or more. The fiber length of crystalline inorganic fibrous material (B) can be measured by scanning electron microscopy (SEM) observation. When the fiber length of the crystalline inorganic fibrous material (B) is within the above range, the inorganic fibrous material (B) tends to be highly oriented in the flow direction of the resin composition, and the appearance tends to be better due to the interfacial adhesion between the inorganic fibrous material and the resin.

[0087] In one embodiment, the content of crystalline inorganic fibrous material (B) in the resin composition is 0.1 to 100 parts by mass per 100 parts by mass of aromatic polyether (A). In one embodiment, the content of crystalline inorganic fibrous material (B) in the resin composition is 0.5 parts by mass or more, 1 part by mass or more, 5 parts by mass or more, 10 parts by mass or more, 15 parts by mass or more, 20 parts by mass or more, or 25 parts by mass or more, or 80 parts by mass or more, or 80 parts by mass or less, 70 parts by mass or less, 60 parts by mass or less, or 50 parts by mass or less, based on 100 parts by mass of aromatic polyether (A).

[0088] The crystalline inorganic fibrous material (B) may be used alone or in combination of two or more types. When two or more types of crystalline inorganic fibrous material (B) are used in combination, the content of the crystalline inorganic fibrous material (B) in the resin composition refers to the total content of the two or more types of crystalline inorganic fibrous material (B).

[0089] In one embodiment, the mass ratio ((A) / (B)) of aromatic polyether (A) to crystalline inorganic fibrous material (B) is 99 / 1 to 50 / 50, 95 / 5 to 50 / 50, 90 / 10 to 50 / 50, or 85 / 15 to 50 / 50.

[0090] The resin composition may contain, as an optional component, other components besides aromatic polyether (A) and crystalline inorganic fibrous material (B), provided that it does not impair the effects of the present invention. Other components include resins other than aromatic polyethers (A), reinforcing fibers other than crystalline inorganic fibrous materials (B), and known resin additives such as antioxidants.

[0091] Examples of resins other than aromatic polyethers (A) include amorphous resins. In this specification, a resin composition containing aromatic polyethers (A), resins other than aromatic polyethers (A), and crystalline inorganic fibrous material (B) is referred to as an "alloy".

[0092] When a resin composition includes an amorphous resin, it can exhibit excellent adhesion to crystalline inorganic fibrous materials (B) and reinforcing fibers, and also tends to have excellent moldability. In particular, regarding moldability, the processing temperature can be lowered and dimensional stability can be improved.

[0093] Examples of amorphous resins include those that do not show a clear endothermic peak in differential scanning calorimetry (DSC) but instead exhibit a stepwise endothermic change.

[0094] In one embodiment, the amorphous resin comprises one or more selected from the group consisting of polyetherimide (PEI), polyethersulfone (PES), polyphenylene ether (PPE), polysulfone (PSU), and polyimide (PI).

[0095] In one embodiment, the amorphous resin includes polyetherimide (PEI).

[0096] In one embodiment, the content of amorphous resin in the resin composition is 5 to 300 parts by mass per 100 parts by mass of aromatic polyether (A), and may be 5 to 200 parts by mass, 5 to 100 parts by mass, 5 to 50 parts by mass, 5 to 25 parts by mass, 10 to 300 parts by mass, 20 to 250 parts by mass, 30 to 200 parts by mass, 40 to 150 parts by mass, or 50 to 100 parts by mass.

[0097] The content of amorphous resin in the resin composition may be 5 parts by mass or more, 10 parts by mass or more, 20 parts by mass or more, 30 parts by mass or more, 40 parts by mass or more, 50 parts by mass or more, 100 parts by mass or more, or 200 parts by mass or more, per 100 parts by mass of aromatic polyether (A). Furthermore, the content of amorphous resin in the resin composition may be 300 parts by mass or less, 250 parts by mass or less, 200 parts by mass or less, 150 parts by mass or less, 100 parts by mass or less, 50 parts by mass or less, or 25 parts by mass per 100 parts by mass of aromatic polyether (A).

[0098] In one embodiment, 50% or more by mass of the resin composition is 60% or more by mass, 70% or more by mass, 80% or more by mass, 90% or more by mass, 95% or more by mass, 97% or more by mass, 99% or more by mass, 99.5% or more by mass, or substantially 100% by mass is an aromatic polyether (A), a crystalline inorganic fibrous material (B), and an amorphous resin.

[0099] Examples of reinforcing fibers other than crystalline inorganic fibrous materials (B) include carbon fibers and glass fibers.

[0100] In one embodiment, 50% or more by mass of the resin composition is 60% or more by mass, 70% or more by mass, 80% or more by mass, 90% or more by mass, 95% or more by mass, 97% or more by mass, 99% or more by mass, 99.5% or more by mass, or substantially 100% by mass is aromatic polyether (A) and crystalline inorganic fibrous material (B). Furthermore, in the case of "substantially 100% by mass," it is acceptable for unavoidable impurities to be present.

[0101] The content of each component in the resin composition described above can also be applied to the amount of each component to be blended during the preparation of the resin composition.

[0102] In one embodiment, the amount of radicals per unit mass of the resin composition at 25°C, measured using TEMPOL as the standard substance and benzene as the solvent for the standard substance, was 6.5 × 10⁻⁶. 15 spin / g or more, 7.0×10 15spin / g or more, 10×10 15 spin / g or more, 20×10 15 spin / g or more, 30×10 15 spin / g or higher, or 40 × 10 15 spin / g or higher, and 9.0 × 10 17 spin / g or less, 6.0×10 17 spin / g or less or 3.0 × 10 17 It is less than spin / g.

[0103] In one embodiment, the amount of radicals in the resin composition is 6.5 × 10 15 spin / g or more 9.0×10 17 spin / g or less, 7.0×10 15 spin / g or more 9.0×10 17 spin / g or less, 20×10 15 spin / g or more 5.0×10 17 spin / g or less, 30×10 15 spin / g or more 5.0×10 17 spin / g or less, 40×10 15 spin / g or more 1.0×10 17 spin / g or less, or 50 × 10 15 spin / g or more 1.0×10 17 It is less than spin / g.

[0104] The radical amount of the resin composition is 6.5 × 10 15 When the spin / g value is above this, the aforementioned improvements in mechanical properties (strength, rigidity, etc.) are more likely to be achieved. On the other hand, the radical amount of the resin composition is 9.0 × 10 17 When the spin / g value is below a certain level, sufficient thermal stability can be obtained, and the molded product is likely to exhibit sufficient mechanical properties.

[0105] The amount of radicals in the resin composition can be increased to the range described above by using an aromatic polyether (A) with a high radical content. The amount of radicals in the resin composition is the value measured by the method described in the examples.

[0106] The method for producing the resin composition of this embodiment is not particularly limited, and known means can be applied. For example, it can be produced by mixing the aromatic polyether (A) and crystalline inorganic fibrous material (B) with optional components as needed in a predetermined ratio, and then melt-kneading them. Known equipment such as an extruder can be used for melt-kneading.

[0107] 2. Molded body A molded article according to one aspect of the present invention is made of a resin composition according to one aspect of the present invention. The molded article according to this aspect has a good appearance and is lightweight.

[0108] The form of the molded article according to one aspect of the present invention is not particularly limited. In one embodiment, the molded body is an injection-molded body, an extruded body, or a compression-molded body.

[0109] The applications of the resin composition and molded articles described above are not particularly limited and can be broadly applied to various applications where strength is required. The resin composition and molded articles are particularly suitable as metal substitutes for applications requiring heat resistance, solvent resistance, and durability. More specifically, they can be suitably used in aerospace components, automotive components, sliding components such as gears and bearings, 3D printer filaments, semiconductor manufacturing equipment components, and the like. [Examples]

[0110] The following describes embodiments of the present invention, but the present invention is not limited to these embodiments.

[0111] Manufacturing Example 1 1. Production of aromatic polyether (A) Nitrogen gas was circulated through a 240L reaction vessel equipped with a stirrer, thermometer, nitrogen inlet tube, and water recovery container connected to a cooling tube. 132.47 kg of diphenyl sulfone (manufactured by Sino-High) was added in stages, and the temperature was raised to 160°C. After confirming melting, 39.00 kg (155 mol) of 4,4'-dichlorobenzophenone (manufactured by Sino-High), 16.85 kg (153 mol) of hydroquinone, and 22.20 kg (161 mol) of potassium carbonate (AGC Inc., fine powder) were added in order. The reaction concentration was 2.31 mol / kg.

[0112] The reaction mixture was carried out under the following temperature control, and then 6.15 kg (25 mol) of 4,4'-dichlorobenzophenone was added as a reaction stopper.

[0113] <Temperature control> (1) Heat from 160°C to 200°C over 90 minutes at a stirring speed of 100 rpm. (2) Hold at 200°C for 60 minutes (3) Increase the temperature from 200°C to 250°C over 80 minutes. (4) Hold at 250°C for 60 minutes (5) Increase the temperature from 250°C to 300°C over 150 minutes. (6) Hold at 300°C for 263 minutes (7) Add the reaction stopper and maintain the temperature at 300°C. Terminate the reaction when the solution viscosity reaches 300 cP.

[0114] After the reaction was complete, the contents were removed into a SUS tray and cooled to room temperature to solidify. The product was coarsely ground, then ground again with a pin mill (Hosokawa Micron Corporation 160UPZ), washed in the order of acetone, oxalic acid aqueous solution, and water, and vacuum dried to obtain a powdered aromatic polyether.

[0115] 2. Evaluation of aromatic polyethers (A) The melt viscosity of the obtained aromatic polyether was measured using an Anton Paar MCR302 rheometer under the following conditions and procedure. The measurement results were as follows: 2.76 / tanδ 2.76The value was 2495.

[0116] [Measurement conditions] • Fixture: SHAFT FOR DISPOSABLE MEASUREING SYSTEM D-CP / PP25 • Disposable dish: Φ41mm • Disposable parallel plate: Φ25mm ·Temperature: 380℃ Shear strain: 1% ·Angular frequency: 2.76rad / s

[0117] [procedure] A disc-shaped aromatic polyether was placed in a disposable dish and measured under the conditions described above. Furthermore, the "disk" was obtained by the following method. Aromatic polyether (A) was filled into a mold (size: 20mmΦ, 0.1mm thick) and pressed at 380°C using a vacuum press (IMC-6215, manufactured by Imoto Seisakusho). After pressing, it was rapidly cooled to 25°C to form a disc.

[0118] Manufacturing Example 2 The melt viscosity of a commercially available aromatic polyether (PEEK, manufactured by Solvay, KT-820) was measured in the same manner as in Manufacturing Example 1. The measurement result was η 2.76 / tanδ 2.76 The result was 569.

[0119] Example 1 1. Manufacturing of resin compositions To 100 parts by mass of aromatic polyether (A) obtained in Production Example 1, 25 parts by mass of wollastonite (Fine Grade KGP-H45, manufactured by Kansai Matec Co., Ltd., with a fiber diameter of 1-10 μm and a fiber length of 10-50 μm), which is a crystalline inorganic fibrous material (B), were dry-blended to obtain a blended raw material. The obtained blended raw material was melt-kneaded using a cylinder with a diameter of 11 mm (Process-11, manufactured by Thermo Fisher Scientific, with a cylinder volume of 20 cc) at a screw rotation speed of 250 rpm and a set temperature of 380 °C. Here, the dry-blended raw material was supplied at a rate of 6 g / min from the base of the twin-screw extruder (upstream side of the screw). The residence time in the twin-screw extruder was 3.5 minutes. After cooling the strands discharged from the twin-screw extruder in water, they were pelletized using a pelletizer to obtain a resin composition.

[0120] 2. Preparation of tensile test specimens The resulting resin composition pellets were injection molded using an injection molding machine (Thermo Fisher Scientific "Mini Jet Pro") under the following conditions to obtain dumbbell tensile test specimens with a thickness of 4 mm and a width of 5 mm.

[0121] <Injection conditions> (1) Cylinder temperature: 400℃ (2) Mold temperature: 210℃ (3) Preheating time: 3 min (4) Holding time: 10s

[0122] 3. Evaluation The melt viscosity was evaluated using the resin composition pellets obtained in "1. Manufacturing of Resin Composition" above, by the following method. Furthermore, the tensile modulus, tensile strength, and surface roughness of the test specimens obtained in "2. Preparation of Tensile Test Specimens" above were measured by the following method. The results are shown in Table 1.

[0123] (1) Measurement of melt viscosity The melt viscosity at a given angular frequency was measured using an Anton Paar MCR302 rheometer under the following conditions and procedure. The melt viscosity η measured at an angular frequency of 0.1 [rad / s] 0.1 [Pa·s] and melt viscosity η measured at an angular frequency of 628 [rad / s] 628 And, from the value n obtained by multiplying the content [mass %] of (B) by 0.1, (η 0.1 / η 628 The value of ) / n was calculated. The results are shown in Table 1.

[0124] [Measurement conditions] • Fixture: SHAFT FOR DISPOSABLE MEASUREING SYSTEM D-CP / PP25 • Disposable dish: Φ41mm • Disposable parallel plate: Φ25mm ·Temperature: 380℃ Shear strain: 1% ·Angular frequency: 0.1~628rad / s

[0125] [procedure] A disc-shaped resin composition was placed in a disposable dish and measured under the above conditions. Furthermore, the "disk" was obtained by the following method. The resin composition was filled into a mold (size: 20mmΦ, 0.1mm thickness) and pressed at 380°C using a vacuum press (IMC-6215, manufactured by Imoto Seisakusho). After pressing, it was rapidly cooled to 25°C to form a disc.

[0126] (2) Measurement of tensile modulus and tensile strength The tensile modulus and tensile strength of test specimens, which are molded articles of the resin composition, were measured under the following conditions. [Tensile test conditions] ·Temperature: 23℃ ·Speed: 20mm / min • Chuck spacing: 50mm A higher numerical value indicates superior mechanical properties (rigidity, strength). The results are shown in Table 1.

[0127] Furthermore, the density (kg / m³) of the resin composition can be determined from the composition of the resin composition. 3 The specific modulus of elasticity (specific modulus) and tensile strength (specific strength) per unit mass of the resin composition were calculated. A larger specific modulus of elasticity and specific strength indicate a greater effect on weight reduction. The results are shown in Table 1.

[0128] (3) Measurement of surface roughness The surface roughness of tensile test specimens, which are molded articles of the resin composition, was measured under the following conditions. Note that the surface roughness of the resin composition of Example 1 was not measured; it was measured for the resin compositions of Examples 2, 4, and 6, and Comparative Examples 2, 4, and 6, which will be described later. [Measuring equipment] Confocal laser microscope (LSM) OPTHLICS HYBRID+ (manufactured by Lasertec Corporation) [Measurement conditions] For the tensile test specimens, three locations were observed (N=3) in the center using either a 10x objective lens (approximately 200x magnification) or a 50x objective lens (approximately 1,000x magnification), and the surface roughness [μm] was evaluated.

[0129] Example 2 The resin composition was prepared and evaluated in the same manner as in Example 1, except that the amount of crystalline inorganic fibrous material (B) was changed as shown in Table 1. The results are shown in Table 1.

[0130] Example 3 The resin composition was prepared and evaluated in the same manner as in Example 1, except that silicon carbide (SCW#1 50M manufactured by Tateho Chemical Industry Co., Ltd., with a fiber diameter of 0.45-0.65 μm and a fiber length of 5-80 μm) was used as the crystalline inorganic fibrous material (B) instead of wollastonite. The results are shown in Table 1.

[0131] Example 4 In Example 3, the resin composition was prepared and evaluated in the same manner as in Example 3, except that the amount of crystalline inorganic fibrous material (B) was changed as shown in Table 1. The results are shown in Table 1.

[0132] Example 5 A resin composition was prepared and evaluated in the same manner as in Example 1, except that titanium dioxide (FTL-300, manufactured by Ishihara Sangyo Co., Ltd., with an average fiber diameter of 0.27 μm and an average fiber length of 5.15 μm) was used as the crystalline inorganic fibrous material (B) instead of wollastonite. The results are shown in Table 1.

[0133] Example 6 In Example 5, the resin composition was prepared and evaluated in the same manner as in Example 5, except that the amount of crystalline inorganic fibrous material (B) was changed as shown in Table 1. The results are shown in Table 1.

[0134] Comparative Examples 1-6 Resin compositions were prepared and evaluated in the same manner as in Examples 1 to 6, except that the aromatic polyether obtained in Production Example 2 was used. The results are shown in Table 2.

[0135] Example 7 1. Alloy Manufacturing 80 parts by mass of aromatic polyether obtained in Production Example 1, 20 parts by mass of polyetherimide (manufactured by Saudi Basic Industries Corporation (SABIC): Ultem1000P), and 43 parts by mass of titanium dioxide (manufactured by Ishihara Industries Co., Ltd. "FTL-300" (average fiber diameter 0.27 μm, average fiber length 5.15 μm)) were melt-kneaded at a set temperature of 380°C using a twin-screw kneader with a cylinder diameter of 11 mm (manufactured by Thermo Fisher Scientific "Process-11", cylinder volume 20 cc) to obtain an alloy (pellets).

[0136] 2. Measurement Method and Evaluation Method The obtained alloy was evaluated in the same manner as the resin composition in Example 1. The results are shown in Table 3.

[0137] [Table 1]

[0138] [Table 2]

[0139] [Table 3]

[0140] From Tables 1 and 2, the resin compositions of Examples 1 to 6 showed high (η) compared to the resin compositions of Comparative Examples 1 to 6. 0.1 / η 628 The result is ) / n, indicating excellent tensile modulus and tensile strength.

[0141] Furthermore, the resin composition of Example 1 contained 25 parts by mass of wollastonite (component B) per 100 parts by mass of component (A), with a tensile modulus of 8.8 GPa and a tensile strength of 127 MPa. In contrast, the resin composition of Comparative Example 2 contained 43 parts by mass of wollastonite (component B) per 100 parts by mass of component (A), with a tensile modulus of 8.4 GPa and a tensile strength of 114 MPa. These results show that the resin composition of Example 1 had superior mechanical properties (rigidity and strength) compared to the resin composition of Comparative Example 2, despite having a lower amount of component (B). Similarly, when comparing Example 3 with Comparative Example 4, and Example 5 with Comparative Example 6, the resin compositions of the examples had equivalent or superior mechanical properties compared to the resin compositions of the comparative examples, despite having a lower amount of component (B). Furthermore, comparing the resin composition of Example 1 with the resin composition of Comparative Example 1, it can be seen that the resin composition of Example 1 has superior specific modulus of elasticity and specific strength, and that weight reduction has been achieved. Thus, the resin composition of the present invention exhibits excellent mechanical properties even with a small amount of component (B), and also has excellent mechanical strength per unit mass, thus enabling weight reduction.

[0142] Furthermore, the resin composition of the example had less surface roughness and a superior appearance of the molded article compared to the resin composition of the comparative example.

[0143] Table 3 shows that, even in alloy form, the resin composition of the present invention possesses excellent mechanical properties while also achieving weight reduction.

Claims

1. A resin composition comprising an aromatic polyether (A) and a crystalline inorganic fibrous material (B), satisfying the following formula (E1). 8<(the) ０．１ / or ６２８ ) / <<50・・・ (E1) [In formula (E1), η ０．１ This refers to the melt viscosity [Pa·s] measured at an angular frequency of 0.1 [rad / s] when the resin composition is melted at 380°C. η ６２８ This refers to the melt viscosity [Pa·s] measured at an angular frequency of 628 [rad / s] when the resin composition is melted at 380°C. n represents the value obtained by multiplying the content [mass%] of (B) in the resin composition by 0.

1.

2. The resin composition according to claim 1, wherein the crystalline inorganic fibrous material (B) has a fiber diameter of 10 μm or less and a fiber length of 100 μm or less.

3. For the aromatic polyether (A) mentioned above, the radical amount at 25°C was measured using TEMPOL as the standard substance and benzene as the solvent for the standard substance, and was 6.5 × 10⁻¹⁶. １５ The resin composition according to claim 1 or 2, wherein the spin / g is 1 or greater.

4. The amount of radicals in the aforementioned resin composition was measured at 25°C using TEMPOL as the standard substance and benzene as the solvent for the standard substance, and was 6.5 × 10⁻¹⁶. １５ A resin composition according to any one of claims 1 to 3, wherein the spin / g is 1 or greater.

5. The resin composition according to any one of claims 1 to 4, wherein the mass ratio ((A) / (B)) of the aromatic polyether (A) to the crystalline inorganic fibrous material (B) is 99 / 1 to 50 / 50.

6. The resin composition according to any one of claims 1 to 5, wherein the aromatic polyether (A) comprises one or more selected from the group consisting of polyetheretherketone (PEEK), polyetherketoneketone (PEKK), and polyetherketone (PEK).

7. The resin composition according to any one of claims 1 to 6, wherein the crystalline inorganic fibrous material (B) comprises at least one selected from the group consisting of wollastonite, silicon carbide, titanium dioxide, and potassium titanate.

8. An injection-molded article, an extruded article, or a press-molded article comprising the resin composition described in any one of claims 1 to 7.

Images