WO2022210593A1 - ポリフェニレンエーテル樹脂組成物及び成形品 - Google Patents
ポリフェニレンエーテル樹脂組成物及び成形品 Download PDFInfo
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- WO2022210593A1 WO2022210593A1 PCT/JP2022/015165 JP2022015165W WO2022210593A1 WO 2022210593 A1 WO2022210593 A1 WO 2022210593A1 JP 2022015165 W JP2022015165 W JP 2022015165W WO 2022210593 A1 WO2022210593 A1 WO 2022210593A1
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- polyphenylene ether
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- 239000011342 resin composition Substances 0.000 title claims abstract description 64
- -1 Poly(phenylene ether) Polymers 0.000 title claims abstract description 49
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- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 42
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 32
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229920001955 polyphenylene ether Polymers 0.000 claims description 53
- 229920001400 block copolymer Polymers 0.000 claims description 41
- 229910019142 PO4 Inorganic materials 0.000 claims description 22
- 239000010452 phosphate Substances 0.000 claims description 22
- 239000003063 flame retardant Substances 0.000 claims description 19
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 15
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- 239000000454 talc Substances 0.000 claims description 11
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- NXXYKOUNUYWIHA-UHFFFAOYSA-N 2,6-Dimethylphenol Chemical compound CC1=CC=CC(C)=C1O NXXYKOUNUYWIHA-UHFFFAOYSA-N 0.000 description 8
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- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 1
- KOWVWXQNQNCRRS-UHFFFAOYSA-N tris(2,4-dimethylphenyl) phosphate Chemical compound CC1=CC(C)=CC=C1OP(=O)(OC=1C(=CC(C)=CC=1)C)OC1=CC=C(C)C=C1C KOWVWXQNQNCRRS-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
- C08L71/12—Polyphenylene oxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/10—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/005—Modified block copolymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/30—Applications used for thermoforming
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
Definitions
- the present invention relates to polyphenylene ether resin compositions and molded articles.
- Patent Documents 3 and 4 As a means of meeting the demand for anti-tracking performance, for example, there is a known technique for improving anti-tracking performance by adding titanium oxide to a thermoplastic resin (see Patent Documents 3 and 4).
- JP 2016-183294 A JP-A-2001-316587 Japanese Patent No. 5405738 WO2015/002145
- thermoplastic resin compositions disclosed in these prior arts still have a further problem in achieving both high tracking resistance and rigidity.
- an object of the present invention is to provide a resin composition that is excellent in anti-tracking performance and that can provide a molded product with rigidity.
- the inventors of the present invention have completed the present invention as a result of intensive studies to solve the above problems.
- the present invention is as follows. [1] (a) a resin component; (b) titanium oxide; (c) an inorganic filler; including The (c) inorganic filler has a thermal conductivity of 2 to 12 [W / (m K)],
- the (a) resin component contains 50 to 90 parts by mass of (a1) polyphenylene ether out of 100 parts by mass of the (a) resin component,
- the amount of the (b) titanium oxide is 5 to 40 parts by mass with respect to 100 parts by mass of the (a) resin component
- the amount of the (c) inorganic filler is 5 to 50 parts by mass with respect to 100 parts by mass of the (a) resin component
- a polyphenylene ether resin composition wherein the mass ratio ((b)/(c)) of the (b) titanium oxide and the (c) inorganic filler is 0.2 to 8.0.
- the total content of the (b) titanium oxide and the (c) inorganic filler is 15 to 90 parts by mass with respect to 100 parts by mass of the (a) resin component [1] to [4] Polyphenylene ether resin composition according to any one of. [6] Any one of [1] to [5], wherein the (a) resin component contains 1 to 49 parts by mass of the (a2) polystyrene resin out of 100 parts by mass of the (a) resin component.
- the polyphenylene ether resin composition according to 1. [8] The polyphenylene ether resin according to any one of [1] to [7], which contains 5 to 30 parts by mass of (d) a phosphate ester flame retardant with respect to 100 parts by mass of the (a) resin component. Composition. [9] The polyphenylene ether resin composition according to [8], wherein the (d) phosphoric acid ester-based flame retardant is a condensate of a phosphoric acid ester. [10] A molded article comprising the polyphenylene ether resin composition according to any one of [1] to [9].
- this embodiment the form for carrying out the present invention (hereinafter also referred to as “this embodiment") will be described in detail. It should be noted that the present invention is not limited to the following embodiments, and can be implemented in various modifications within the spirit of the present invention.
- a resin component (b) titanium oxide, (c) an inorganic filler, (d) a phosphate ester flame retardant, (a1) polyphenylene ether, (a2) a polystyrene resin, (a3) Hydrogenated block copolymer, (c-1) calcium silicate fibrous material, and (c-2) talc, respectively, are simply the components (a), (b), (c), and (d). It may be referred to as a component, (a1) component, (a2) component, (a3) component, (c-1) component, and (c-2) component.
- 50 to 90 parts by mass means 50 parts by mass or more and 90 parts by mass or less.
- the polyphenylene ether resin composition of the present embodiment (hereinafter sometimes simply referred to as "the resin composition of the present embodiment") is (a) a resin component; (b) titanium oxide; (c) an inorganic filler; including The (c) inorganic filler has a thermal conductivity of 2 to 12 [W / (m K)],
- the (a) resin component contains 50 to 90 parts by mass of (a1) polyphenylene ether out of 100 parts by mass of the (a) resin component,
- the amount of the (b) titanium oxide is 5 to 40 parts by mass with respect to 100 parts by mass of the (a) resin component,
- the amount of the (c) inorganic filler is 5 to 50 parts by mass with respect to 100 parts by mass of the (a) resin component, and
- the mass ratio ((b)/(c)) between the (b) titanium oxide and the (c) inorganic filler is 0.2 to 8.0.
- the (a) resin component in the resin composition of the present embodiment contains at least (a1) polyphenylene ether.
- resin components other than (a1) polyphenylene ether include (a2) polystyrene resins and (a3) hydrogenated block copolymers.
- polyphenylene ether examples include poly(2,6-dimethyl-1,4-phenylene ether), poly(2-methyl-6-ethyl-1,4-phenylene ether), poly(2-methyl- 6-phenyl-1,4-phenylene ether), poly(2,6-dichloro-1,4-phenylene ether) and the like.
- polyphenylene ethers also include, for example, copolymers of 2,6-dimethylphenol and other phenols. Examples of such copolymers include copolymers of 2,6-dimethylphenol and 2,3,6-trimethylphenol; and copolymers of 2,6-dimethylphenol and 2-methyl-6-butylphenol. polymers.
- particularly preferred polyphenylene ethers include poly(2,6-dimethyl-1,4-phenylene ether), copolymers of 2,6-dimethylphenol and 2,3,6-trimethylphenol, or A mixture.
- Dibutylamine may be contained in some of the terminal groups in the polyphenylene ether.
- the inclusion of dibutylamine in some terminal groups of the polyphenylene ether can be identified by a peak appearing at 3.620 ppm in NMR.
- Polyphenylene ether can be produced by a known method.
- Methods for producing polyphenylene ether include, for example, US Pat. No. 3,306,874, US Pat. No. 3,306,875, US Pat. 51197, JP-B-52-17880, JP-B-63-152628, and the like.
- the preferred range of reduced viscosity of polyphenylene ether (0.5 g/dL chloroform solution, 30°C, measured with Ubbelohde viscosity tube) is 0.30 dL/g from the viewpoint of impact resistance and heat resistance of the molded product. ⁇ 0.80 dL/g, more preferably 0.35 dL/g to 0.75 dL/g, most preferably 0.38 dL/g to 0.55 dL/g.
- the (a1) polyphenylene ether may be used singly, or two or more different in composition, molecular weight, reduced viscosity, etc. may be used in combination.
- a known stabilizer can also be suitably used to stabilize the polyphenylene ether.
- stabilizers include metallic stabilizers such as zinc oxide and zinc sulfide; organic stabilizers such as hindered phenol stabilizers, phosphorus stabilizers and hindered amine stabilizers.
- a preferable blending amount of the stabilizer is less than 5 parts by mass with respect to 100 parts by mass of the (a1) polyphenylene ether.
- known additives that can be added to polyphenylene ether may also be added in an amount of less than 10 parts by mass with respect to 100 parts by mass of (a1) polyphenylene ether.
- the content of (a1) polyphenylene ether is 50 to 90 parts by mass, preferably 50 to 80 parts by mass, based on 100 parts by mass of the resin component, from the viewpoint of achieving a sufficiently good balance between tracking resistance and rigidity. Department.
- (a2) polystyrene resin (a) As the resin component, (a2) a polystyrene resin can be used.
- Polystyrene-based resins include, for example, homopolymers of styrene-based compounds and copolymers of styrene-based compounds with other monomers.
- the polystyrene-based resin may be used singly or in combination of two or more.
- the amount of structural units derived from the styrene compound in the copolymer is 5% by mass or more. , 10% by mass or more, 20% by mass or more, 30% by mass or more, 40% by mass or more, 50% by mass or more, 60% by mass or more, 70% by mass or more, 80% by mass or more, 90% by mass or more, or 95% by mass or more is.
- the amount of structural units derived from the styrene compound in the copolymer is 95% by mass. Below, 90% by mass or less, 80% by mass or less, 70% by mass or less, 60% by mass or less, 50% by mass or less, 40% by mass or less, 30% by mass or less, 20% by mass or less, 10% by mass or less, or 5% by mass It is below.
- styrene compounds include styrene, ⁇ -methylstyrene, 2,4-dimethylstyrene, monochlorostyrene, p-methylstyrene, p-tert-butylstyrene and ethylstyrene. Styrene is preferred from the viewpoint of practicality as a raw material.
- Examples of monomers other than styrene compounds include methacrylic acid esters such as methyl methacrylate and ethyl methacrylate; acid anhydrides such as maleic anhydride; and ⁇ -olefins such as ethylene.
- Polystyrene-based resins include, for example, atactic polystyrene and rubber-reinforced polystyrene.
- rubber-reinforced polystyrene include high-impact polystyrene.
- the polystyrene resin is preferably at least one selected from the group consisting of atactic polystyrene and high impact polystyrene.
- the content of the polystyrene resin may be adjusted as appropriate. 1 to 49 parts by mass, preferably 5 to 49 parts by mass, more preferably 10 to 49 parts by mass. In one embodiment, the content of (a2) polystyrene resin is 1 part by mass or more, 5 parts by mass or more, 10 parts by mass or more, 20 parts by mass or more, or 30 parts by mass with respect to 100 parts by mass of the resin component (a) parts or more, 40 parts by mass or more, or 45 parts by mass or more.
- the content of the polystyrene resin is 49 parts by mass or less, 45 parts by mass or less, 40 parts by mass or less, 30 parts by mass or less, or 20 parts by mass with respect to 100 parts by mass of the resin component (a) parts or less, 10 parts by mass or less, or 5 parts by mass or less.
- (a3) Hydrogenated block copolymer As the resin component, (a3) a hydrogenated block copolymer can be used. (a3) The hydrogenated block copolymer is a hydrogenated block copolymer obtained by hydrogenating a block copolymer of an aromatic vinyl compound and a conjugated diene compound.
- a block copolymer of an aromatic vinyl compound and a conjugated diene compound is, for example, a block copolymer of styrene and a conjugated diene compound, that is, a block copolymer composed of a polystyrene block and a conjugated diene compound polymer block. .
- the hydrogenation rate of unsaturated bonds derived from the conjugated diene compound by hydrogenation is preferably 60% or more, more preferably 80% or more, and still more preferably 95% or more from the viewpoint of heat resistance stability.
- the block copolymer when the block copolymer is a block copolymer of styrene and a conjugated diene compound, the styrene block chain is S, the diene compound block chain is B, and the silicon atom is Examples of Si include SBS, SBSB, (SB-) 4 -Si, and SBSBS.
- the microstructure of the diene compound polymer block can be arbitrarily selected.
- the amount of vinyl bonds in the conjugated diene compound polymer block is the total amount of bonds in the diene compound polymer (1,2-vinyl bonds and 3,4- It is preferably 2 to 60%, more preferably 8 to 40% of the total of vinyl bonds and 1,4-conjugated bonds).
- the number average molecular weight of the hydrogenated block copolymer may be adjusted as appropriate, for example, it is preferably 100,000 to 400,000, more preferably 150,000 to 350,000, and further Preferably it is 200,000 to 300,000. When the number average molecular weight is 100,000 or more, a resin composition having excellent impact resistance can be obtained. (a3) The impact resistance of the resin composition of the present embodiment is improved in proportion to the number average molecular weight of the hydrogenated block copolymer.
- the hydrogenated block copolymer (a3) has a number average molecular weight of 400,000 or less, a polyphenylene ether resin composition having a low load during melt extrusion and excellent processing fluidity can be obtained, and (a3) The hydrogenated block copolymer has excellent dispersibility in the polyphenylene ether resin composition.
- the hydrogenated block copolymer (a3) when the hydrogenated block copolymer (a3) has a styrene polymer block chain, at least one styrene polymer block chain has a number average molecular weight of 15,000 or more. more preferably 20,000 or more and 50,000 or less. More preferably, all styrene polymer block chains have a number average molecular weight of 15,000 or more.
- the hydrogenated block copolymer is, when the (a3) hydrogenated block copolymer has a styrene polymer block chain, (a3) the proportion of the styrene polymer block chain in the hydrogenated block copolymer is not particularly limited as long as the number average molecular weight of at least one styrene polymer block chain is 15,000 or more. to 50% by mass, more preferably 30 to 40% by mass.
- the hydrogenated block copolymer two or more hydrogenated block copolymers having different compositions or structures can be used in combination. For example, a combination of a hydrogenated block copolymer having a bound styrene polymer block content of 50% by mass or more and a hydrogenated block copolymer having a bound styrene polymer block content of 30% by mass or less, hydrogenated block copolymers having different molecular weights, etc.
- the "bound styrene polymer block content" is the proportion of styrene polymer block chains in (a3) the hydrogenated block copolymer.
- the hydrogenated block copolymer preferably has a Li (lithium) content as a residual metal component of 100 mass ppm or less.
- the Li content is 100 ppm by mass or less, the resin composition of the present embodiment is excellent in long-term heat aging resistance or flame retardancy after heat aging.
- the Li content of the (a3) hydrogenated block copolymer is more preferably 50 ppm by mass or less, and even more preferably 20 ppm by mass or less.
- the Li content is determined by dry ashing, that is, after pretreatment by a method of weighing a sample, putting it in a crucible, and heat-treating it at 500 to 600° C. for 5 to 20 minutes using a burner heating or an electric furnace. , can be measured by applying the ICP-AES method using iCAP6300 Duo manufactured by Thermo Fisher Scientific.
- the hydrogenated block copolymer may be dispersed in particles in the polyphenylene ether resin composition.
- the average particle diameter thereof is preferably 0.1 to 3.0 ⁇ m, more preferably 0.2 to 2.0 ⁇ m, More preferably, it is 0.3 to 1.0 ⁇ m.
- the resin composition of the present embodiment has excellent impact resistance.
- the average particle size of the hydrogenated block copolymer refers to the weight average particle size.
- the content of the (a3) hydrogenated block copolymer may be adjusted as appropriate, and is, for example, in the range of 1 to 49 parts by mass, preferably 1 to 35 parts by mass, based on 100 parts by mass of the resin component (a). parts, more preferably 1 to 25 parts by mass.
- (a3) When the content of the hydrogenated block copolymer is 1 part by mass or more, excellent impact strength can be obtained in the resin composition of the present embodiment.
- the content of (a3) the hydrogenated block copolymer is 49 parts by mass or less, the compatibility with (a3) polyphenylene ether is excellent, the impact resistance is high, and the rigidity such as flexural modulus and flexural strength is obtained. is obtained.
- the (b) titanium oxide used in the resin composition of the present embodiment is not particularly limited, and known titanium oxides can be used.
- the average primary particle size of titanium oxide is preferably 0.01 to 0.5 ⁇ m, more preferably 0.05 to 0, from the viewpoint of the balance between dispersibility, whiteness, and handling during production. 0.4 ⁇ m, more preferably 0.15 to 0.3 ⁇ m.
- Titanium oxide is at least one of oxides of metals such as aluminum, magnesium, titanium zirconia and tin, hydrous oxides of these metals, higher fatty acid salts of these metals such as stearic acid, or organic silicon compounds. It may be contained as a surface treatment agent.
- Titanium oxide can be produced by a dry method or a wet method.
- the crystal structure of titanium oxide may be either a rutile type or an anatase type, and the rutile type is preferred from the viewpoint of the white colorability and thermal stability of the thermoplastic resin composition used in the present embodiment.
- Titanium oxide may be used singly or in combination of two or more.
- the content of (b) titanium oxide is 5 to 40 parts per 100 parts by mass of the (a) resin component. Parts by mass, preferably 10 to 40 parts by mass, more preferably 15 to 40 parts by mass.
- the content of component (b) is 5 parts by mass or more, 10 parts by mass or more, 15 parts by mass or more, 20 parts by mass or more, 25 parts by mass or more per 100 parts by mass of component (a). It is 30 parts by mass or more, or 35 parts by mass or more.
- the content of component (b) is 40 parts by mass or less, 35 parts by mass or less, 30 parts by mass or less, 25 parts by mass or less, or 20 parts by mass or less per 100 parts by mass of component (a). , 15 parts by mass or less, or 10 parts by mass or less.
- the resin composition of the present embodiment contains (c) an inorganic filler with a thermal conductivity of 2 to 12 [W/(m ⁇ K)].
- An inorganic filler having a thermal conductivity within this range is considered to have a higher thermal conductivity than, for example, glass fibers, which are general inorganic fillers, and have good heat dissipation properties in the resin. For this reason, it is considered that carbonized conductive paths are difficult to form, and the decrease in anti-tracking performance that may occur when adding an inorganic filler is small.
- Component (c) is not particularly limited as long as it is an inorganic filler with a thermal conductivity of 2 to 12 [W/(mK)]. c-2) talc and the like.
- (c-1) Calcium silicate fibrous material exhibits an effect of maintaining anti-tracking performance and an effect of improving physical properties.
- (c-1) calcium silicate-based fibrous material known materials containing CaO and SiO 2 as main components can be used. Among them, for example, wollastonite and xonotlite are preferable. Wollastonite is more preferred.
- Wollastonite has a composition given by CaO.SiO 2 .
- Wollastonite includes both natural and synthetic products. Natural products usually exist as aggregates of fibers and are used after being pulverized and classified. The aspect ratio (fiber length/fiber diameter) of wollastonite varies depending on the pulverization method and production area in the case of natural products. A substantially uniform synthetic product can be obtained.
- Xonotlite has a composition represented by 6CaO.6SiO2.H2O .
- Xonotlite includes both natural and synthetic products.
- Talc is a mineral containing magnesium hydroxide and silicate, and the chemical name is hydrated magnesium silicate. Talc is generally based on about 60% SiO2 , about 30% MgO, and 4.8% water of crystallization.
- the surface treatment agent is not particularly limited, and examples thereof include silane coupling agents such as aminosilane and epoxysilane; titanate coupling agents; fatty acids (saturated fatty acids, unsaturated fatty acids); alicyclic carboxylic acids; ; metallic soap; and the like.
- the amount of the surface treatment agent added is not particularly limited, but is preferably 3% by mass or less, more preferably 2% by mass or less, relative to 100% by mass of talc, and is substantially not added. is most preferred.
- the thermal conductivity of the (c) inorganic filler is 2.0 [W/(m K)] or more, 2.5 [W/(m K)] or more, 3.0 [W/ (m K)] or more, 3.5 [W / (m K)] or more, 4.0 [W / (m K)] or more, 4.5 [W / (m K)] or more, 5.0 [W/(m K)] or more, 5.5 [W/(m K)] or more, 6.0 [W/(m K)] or more, 6.5 [W/(m ⁇ K)] or more, 7.0 [W/(m ⁇ K)] or more, 7.5 [W/(m ⁇ K)] or more, 8.0 [W/(m ⁇ K)] or more, 8.
- the thermal conductivity of the (c) inorganic filler is 12.0 [W/(mK)] or less, 11.5 [W/(mK)] or less, 11.0 [W / (m K)] or less, 10.5 [W / (m K)] or less, 10.0 [W / (m K)] or less, 9.5 [W / (m K) ] or less, 9.0 [W / (m K)] or less, 8.5 [W / (m K)] or less, 8.0 [W / (m K)] or less, 7.5 [W /(m K)] or less, 7.0 [W/(m K)] or less, 6.5 [W/(m K)] or less, 6.0 [W/(m K)] or less , 5.5 [W / (m K)] or less, 5.0 [W / (m K)] or less, 4.5 [W / (m K)] or less, 4.0 [W / ( m K)] or less,
- the inorganic filler may be used singly or in combination of two or more.
- the resin composition of the present embodiment has an inorganic filler ("other (referred to as “inorganic filler”) may or may not be included.
- other inorganic fillers the amount of the other inorganic fillers is, for example, the average thermal conductivity of (c) the inorganic filler and the other inorganic filler is 2 to 12 [W / (m K)]. can be any amount.
- the content of the (c) inorganic filler in the resin composition of the present embodiment is 100 parts by mass of the resin component (a) from the viewpoint of sufficiently good balance among processability, heat resistance, tracking resistance and rigidity. 5 to 50 parts by mass, preferably 5 to 45 parts by mass, more preferably 10 to 40 parts by mass. In one embodiment, the content of component (c) is 5 parts by mass or more, 10 parts by mass or more, 15 parts by mass or more, 20 parts by mass or more, 25 parts by mass or more per 100 parts by mass of component (a). 30 parts by mass or more, 35 parts by mass or more, 40 parts by mass or more, or 45 parts by mass or more.
- the content of component (c) is 50 parts by mass or less, 45 parts by mass or less, 40 parts by mass or less, 35 parts by mass or less, or 30 parts by mass or less per 100 parts by mass of component (a). , 25 parts by mass or less, 20 parts by mass or less, 15 parts by mass or less, or 10 parts by mass or less.
- the mass ratio ((b)/(c)) of component (b) to component (c) is 0.2 to 8.0.
- a potential well generated by the component (b) dispersed in the resin when a voltage is applied traps charges and stabilizes the space charge, thereby improving the tracking resistance.
- a high degree of both anti-tracking performance and rigidity can be achieved by setting the ratio of the component (c) to 0.2 to 8.0. The reason for this is thought to be that the deterioration in tracking resistance due to the carbonized conductive paths formed by the component (c) is moderately suppressed, while the rigidity improving effect by the component (c) is exhibited.
- the mass ratio ((b)/(c)) is 0.20 or greater, 0.50 or greater, 0.60 or greater, 0.65 or greater, 0.70 or greater, 0.80 or greater, 0.20 or greater, 0.65 or greater, 0.70 or greater, 0.80 or greater.
- 90 or more 1.00 or more, 1.10 or more, 1.20 or more, 1.30 or more, 1.40 or more, 1.50 or more, 1.60 or more, 1.70 or more, 1.80 or more, 1. 90 or more, 2.00 or more, 2.50 or more, 3.00 or more, 3.30 or more, 3.50 or more, 4.00 or more, 4.50 or more, 5.00 or more, 5.50 or more, 6. 00 or greater, 6.50 or greater, 7.00 or greater, or 7.50 or greater.
- the mass ratio ((b)/(c)) is 8.00 or less, 7.50 or less, 7.00 or less, 6.50 or less, 6.00 or less, 5.50 or less, 5 .00 or less, 4.50 or less, 4.00 or less, 3.50 or less, 3.00 or less, 2.50 or less, 2.00 or less, 1.90 or less, 1.80 or less, 1.70 or less, 1 .60 or less, 1.50 or less, 1.40 or less, 1.30 or less, 1.20 or less, 1.10 or less, 1.00 or less, 0.65 or less, or 0.50 or less.
- the mass ratio ((b)/(c)) is preferably 0.5 to 5.0, more preferably 0.6 to 4.0, and 0.65 to 3.5. is particularly preferred.
- the total content of the component (b) and the component (c) is 15 to 90 parts by mass with respect to 100 parts by mass of the resin component (a) from the viewpoint of achieving a good balance between tracking resistance and rigidity. preferably 20 to 80 parts by mass, and particularly preferably 20 to 75 parts by mass.
- the resin composition of the present embodiment may contain (d) a phosphate ester flame retardant.
- a phosphate ester-based flame retardant When containing a phosphate ester-based flame retardant, (a1) the effect of promoting flame retardancy of polyphenylene ether and (d) the effect of imparting flame retardancy of the phosphate ester-based flame retardant are combined to form the resin composition of the present embodiment. It is highly effective in imparting flame retardancy to
- Phosphate ester-based flame retardants include, for example, phosphate esters represented by the following general formula (1) and condensates thereof. ... (1)
- R 1 , R 2 , R 3 and R 4 each represent a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an aryl-substituted alkyl group, an aryl group, a halogen-substituted aryl group, and an alkyl-substituted represents any one selected from the group consisting of aryl groups, which may be the same or different.
- X represents an arylene group.
- Typical phosphate ester monomers include, for example, triphenyl phosphate, tricresyl phosphate and trixylenyl phosphate.
- n can have an average value of 1, 2, 3, 4 or 5, preferably an average value of 1, 2 or 3.
- R 1 , R 2 , R 3 and R 4 in formula (1) is an aryl group. are preferred, and more preferably all of R 1 , R 2 , R 3 and R 4 are aryl groups.
- Aryl groups include, for example, phenyl, xylenyl, cresyl, or halogenated derivatives thereof.
- Preferred examples of X include residues obtained by removing two hydroxyl groups from resorcinol, hydroquinone, bisphenol A, biphenol, or halogenated derivatives thereof.
- condensed phosphate ester compounds examples include resorcinol-bisphenyl phosphate compounds, bisphenol A-polyphenyl phosphate compounds and bisphenol A-polycresyl phosphate compounds.
- Phosphate ester-based flame retardants may be used singly or in combination of two or more.
- the content of the phosphate ester-based flame retardant may be adjusted as appropriate. It is 5 to 30 parts by mass, preferably 5 to 25 parts by mass, more preferably 5 to 20 parts by mass.
- the resin composition of the present embodiment has Other components may be contained as necessary within a range that does not impair the anti-tracking performance and rigidity of the polyphenylene ether resin composition.
- thermoplastic elastomers polyolefin elastomers
- heat stabilizers antioxidants, metal deactivators, crystal nucleating agents
- flame retardants other than phosphate ester flame retardants e.g. , ammonium polyphosphate compounds, silicone flame retardants, etc.
- plasticizers e.g., low molecular weight polyethylene, epoxidized soybean oil, polyethylene glycol, fatty acid esters, etc.
- weather resistance improvers e.g., light resistance improvers, slip agents
- organic fillers organic reinforcing materials (eg, polyacrylonitrile fiber, aramid fiber, etc.), colorants, release agents, and the like.
- the other components may be used singly or in combination of two or more.
- the resin composition of the present embodiment can be produced by melt-kneading essential components and optional components.
- the apparatus and conditions described in JP-A-2018-062608 can be employed.
- the resin composition of the present embodiment As a specific method for producing the resin composition of the present embodiment, it is possible to use an extruder in which the oxygen concentration of each raw material supply port is controlled to less than 1.0% by volume, and to carry out the following method 1 or 2. preferable.
- All or part of the components (a) and (b) contained in the resin composition of the present embodiment are melt-kneaded (first kneading step), and the molten kneaded product obtained in the first kneading step is , a production method in which the remaining components of the resin composition are supplied and melt-kneaded (second kneading step). 2.
- first kneading step to the second kneading step in 1 above it may be avoided to melt the kneaded product once, pelletize the component (a1), and then melt it again.
- the molded article of this embodiment contains the polyphenylene ether resin composition of this embodiment.
- the shape of the molded article of the present embodiment is not particularly limited, and examples thereof include film, sheet, and box shapes.
- the method for manufacturing the molded article of the present embodiment is not particularly limited, and a known method for manufacturing a molded article using a resin composition can be used.
- methods for producing the molded article of the present embodiment include injection molding (for example, insert molding, hollow molding, multicolor molding, etc.), blow molding, compression molding, extrusion molding, thermoforming, cutting from a thick plate, and the like. is mentioned. Among them, injection molding is preferable from the viewpoint of mass productivity.
- the molded article of the present embodiment is an injection molded article, blow molded article, compression molded article, extrusion molded article, thermoformed article, and cutting from a thick plate of the polyphenylene ether resin composition of the present embodiment. It is one or more selected from the group consisting of products. In another embodiment, the molded article of the present embodiment is one or more selected from the group consisting of insert molded articles, hollow molded articles and multicolor molded articles of the polyphenylene ether resin composition of the present embodiment.
- the flexural modulus is an index that represents the rigidity of molded products.
- the flexural modulus of the molded article is not particularly limited, and is, for example, 2000 MPa or higher, 2500 MPa or higher, 3000 MPa or higher, 3500 MPa or higher, 4000 MPa or higher, 4500 MPa or higher, 5000 MPa or higher, 5500 MPa or higher, 6000 MPa or higher, or 6500 MPa or higher.
- the bending elastic modulus of the molded product is, for example, 8000 MPa or less, 7500 MPa or less, 7000 MPa or less, 6500 MPa or less, 6000 MPa or less, 5500 MPa or less, 5000 MPa or less, 4500 MPa or less, 4000 MPa or less, 3500 MPa or less, 3000 MPa or less, or 2500 MPa or less.
- the flexural modulus is 3000 MPa or more
- the molded product has such rigidity that it can be applied to mechanical parts or structures.
- the resin composition of the present embodiment can be used for applications in which anti-tracking performance and rigidity are important, and can be suitably used for electric parts, electronic parts, and electric/electronic parts for automobiles.
- Applications of electrical components include, for example, office machines, measuring instruments, chassis, electrical equipment, power adapters, recording media, recording media drives, sensor devices, terminal blocks, secondary batteries, fuel cells, solar cells, generators, Examples include smart meters, power transmission equipment, cable terminals, automobiles, connection structures for photovoltaic modules (module connectors, junction boxes, etc.), hybrid automobiles, and electric automobiles.
- the obtained pellets of the resin composition are supplied to a small injection molding machine (trade name: EC75SXII, manufactured by Toshiba Machine Co., Ltd.) set at a cylinder temperature of 280 ° C., and the mold temperature is 80 ° C. and the injection pressure is 120 MPa. It was formed into a flat plate of 70 mm x 3 mm. With respect to the flat plate, the maximum voltage (V) at which tracking breakdown does not occur was measured according to IEC60112:2003 (electrolyte used: solution A, number of drops: 50 drops) to evaluate tracking resistance. It was determined that the higher the maximum voltage value, the better the tracking resistance.
- V maximum voltage
- Titanium oxide/titanium oxide “trade name: TIOXIDE R-TC30 manufactured by Huntsman”, average particle size (average primary particle size): 0.21 ⁇ m, crystal structure: rutile type
- Inorganic filler (c) Calcium silicate-based fibrous substance: Wollastonite “Product name: KTP-H02S manufactured by Kansai Matek Co., Ltd.”, thermal conductivity 2.7 [W / (m K)] (c-2) Talc “Product name: Crown Talc PK-MMB, manufactured by Matsumura Sangyo Co., Ltd.”, thermal conductivity 5.2 to 10.7 [W / (m K)]
- Comparative inorganic filler (c′-1) Glass fiber “Product name: ECS03T-249 manufactured by Nippon Electric Glass Co., Ltd.” Thermal conductivity 1.0 [W / (m K)] (c′-2) Mica “Product name: C-100IF manufactured by Repco” thermal conductivity 0.67 [W / (m K)] (c′-3) Fibrous basic magnesium sulfate “Trade name: Mos-Hige, manufactured by Ube Materials Co., Ltd.” Thermal conductivity 0.1 [W / (m K)]
- Example 1 Using a twin-screw extruder (ZSK-25: manufactured by Coperion), the first raw material supply port is provided upstream with respect to the flow direction of the raw material, and downstream from this, the first vacuum vent, the second raw material supply port, the second Three raw material supply ports were provided, and a second vacuum vent was provided downstream thereof.
- the cylinder temperature was set from 320°C upstream to 300°C downstream. According to the mixing ratio (parts by mass) shown in Table 1, component (a) was supplied from the first supply port, component (b) was supplied from the second supply port, and component (c) was supplied from the third supply port.
- the liquid (d) phosphate flame retardant was supplied from a downstream injection nozzle and melt-kneaded.
- the screw rotation speed was set to 200 rotations/minute, and the discharge amount was set to 15 kg/h. Further, an opening (vent) was provided in the cylinder block, and residual volatilization was removed by vacuum suction. The degree of pressure reduction (pressure) at this time was 0.09 MPa.
- the strand extruded from the die was cooled and cut continuously with a cutter to obtain resin composition pellets of Example 1 having a length of about 3 mm and a diameter of 3 mm.
- Example 2-13 and Comparative Examples 1-6 In Example 1, except that the formulation was changed as shown in Tables 1 to 3, the same operation as in Example 1 was performed to obtain resin pellets.
- the resin composition which is excellent in anti-tracking performance and can obtain the molded article which gave rigidity can be provided.
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Abstract
Description
[1](a)樹脂成分と、
(b)酸化チタンと、
(c)無機フィラーと、
を含み、
前記(c)無機フィラーは、熱伝導率が2~12[W/(m・K)]であり、
前記(a)樹脂成分は、前記(a)樹脂成分100質量部のうち、(a1)ポリフェニレンエーテルを50~90質量部含み、
前記(b)酸化チタンの量は、前記(a)樹脂成分100質量部に対して、5~40質量部であり、
前記(c)無機フィラーの量は、前記(a)樹脂成分100質量部に対して、5~50質量部であり、かつ、
前記(b)酸化チタンと前記(c)無機フィラーとの質量比((b)/(c))が、0.2~8.0である、ポリフェニレンエーテル樹脂組成物。
[2]前記(c)無機フィラーが、(c-1)ケイ酸カルシウム系繊維状物、及び(c-2)タルクからなる群から選ばれる1種以上である、[1]に記載のポリフェニレンエーテル樹脂組成物。
[3]前記(c)無機フィラーが、前記(c-1)ケイ酸カルシウム系繊維状物である、[2]に記載のポリフェニレンエーテル樹脂組成物。
[4]前記(c-1)ケイ酸カルシウム系繊維状物が、ワラストナイトである、[2]に記載のポリフェニレンエーテル樹脂組成物。
[5]前記(b)酸化チタンと前記(c)無機フィラーとの合計含有量が、前記(a)樹脂成分100質量部に対して15~90質量部である、[1]~[4]のいずれか一に記載のポリフェニレンエーテル樹脂組成物。
[6]前記(a)樹脂成分は、前記(a)樹脂成分100質量部のうち、(a2)ポリスチレン系樹脂を1~49質量部含む、[1]~[5]のいずれか一に記載のポリフェニレンエーテル樹脂組成物。
[7]前記(a)樹脂成分は、前記(a)樹脂成分100質量部のうち、(a3)水添ブロック共重合体を1~49質量部含む、[1]~[6]のいずれか一に記載のポリフェニレンエーテル樹脂組成物。
[8]前記(a)樹脂成分100質量部に対して、(d)リン酸エステル系難燃剤を5~30質量部含む、[1]~[7]のいずれか一に記載のポリフェニレンエーテル樹脂組成物。
[9]前記(d)リン酸エステル系難燃剤が、リン酸エステルの縮合物である、[8]に記載のポリフェニレンエーテル樹脂組成物。
[10][1]~[9]のいずれか一のいずれか一項に記載のポリフェニレンエーテル樹脂組成物を含む、成形品。
本実施形態のポリフェニレンエーテル樹脂組成物(以下、単に「本実施形態の樹脂組成物ということがある。」)は、
(a)樹脂成分と、
(b)酸化チタンと、
(c)無機フィラーと、
を含み、
前記(c)無機フィラーは、熱伝導率が2~12[W/(m・K)]であり、
前記(a)樹脂成分は、前記(a)樹脂成分100質量部のうち、(a1)ポリフェニレンエーテルを50~90質量部含み、
前記(b)酸化チタンの量は、前記(a)樹脂成分100質量部に対して、5~40質量部であり、
前記(c)無機フィラーの量は、前記(a)樹脂成分100質量部に対して、5~50質量部であり、かつ、
前記(b)酸化チタンと前記(c)無機フィラーとの質量比((b)/(c))が、0.2~8.0である。この構成により、耐トラッキング性能に優れ且つ、剛性を付与した成形品を得ることができる。
本実施形態の樹脂組成物における(a)樹脂成分は、(a1)ポリフェニレンエーテルを少なくとも含む。(a1)ポリフェニレンエーテル以外の(a)樹脂成分としては、例えば、(a2)ポリスチレン系樹脂および(a3)水添ブロック共重合体等が挙げられる。
(a1)ポリフェニレンエーテルとしては、例えば、ポリ(2,6-ジメチル-1,4-フェニレンエーテル)、ポリ(2-メチル-6-エチル-1,4-フェニレンエーテル)、ポリ(2-メチル-6-フェニル-1,4-フェニレンエーテル)、ポリ(2,6-ジクロロ-1,4-フェニレンエーテル)等が挙げられる。さらに、(a1)ポリフェニレンエーテルとしては、例えば、2,6-ジメチルフェノールと他のフェノール類との共重合体も挙げられる。このような共重合体としては、例えば、2,6-ジメチルフェノールと2,3,6-トリメチルフェノールとの共重合体;および2,6-ジメチルフェノールと2-メチル-6-ブチルフェノールとの共重合体が挙げられる。これらの中でも特に好ましいポリフェニレンエーテルとしては、ポリ(2,6-ジメチル-1,4-フェニレンエーテル)、2,6-ジメチルフェノールと2,3,6-トリメチルフェノールとの共重合体、又はこれらの混合物である。
(a)樹脂成分として、(a2)ポリスチレン系樹脂を用いることができる。
(a)樹脂成分として、(a3)水添ブロック共重合体を用いることができる。(a3)水添ブロック共重合体とは、芳香族ビニル化合物と共役ジエン系化合物とのブロック共重合体を、水素添加して得られる水添ブロック共重合体である。芳香族ビニル化合物と共役ジエン系化合物とのブロック共重合体は、例えば、スチレンと共役ジエン化合物とのブロック共重合体、すなわちポリスチレンブロックと共役ジエン化合物重合体ブロックとからなるブロック共重合体である。
本実施形態の樹脂組成物に用いる(b)酸化チタンとしては、特に限定されず、公知の酸化チタンを使用できる。
本実施形態の樹脂組成物は、熱伝導率2~12[W/(m・K)]の(c)無機フィラーを含む。当該範囲の熱伝導率を有する無機フィラーは、例えば、一般的な無機フィラーであるガラス繊維等と比較して熱伝導率が高く、樹脂中での放熱性が良いと考えられる。このため、炭化導電路を形成しにくく、無機フィラー添加時に生じ得る耐トラッキング性能の低下が小さいと考えられる。
(c-1)ケイ酸カルシウム系繊維状物は、耐トラッキング性能の維持効果及び物理的特性の向上効果を示す。(c-1)ケイ酸カルシウム系繊維状物としては、CaO及びSiO2を主成分とする公知のものが使用できるが、その中でも、例えば、ワラストナイト、ゾノトライトが好ましい。さらに好ましくはワラストナイトである。
タルクは、水酸化マグネシウムとケイ酸塩とを含む鉱物であり、化学名が含水珪酸マグネシウムである鉱物である。タルクは、一般的に、SiO2約60%、MgO約30%、結晶水4.8%を主成分とする。
本実施形態において、(b)成分と(c)成分との質量比((b)/(c))は0.2~8.0である。当該質量比であることで、電圧を印加した際に樹脂中に分散している(b)成分により発生したポテンシャルの井戸によって、電荷をトラップし空間電荷が安定することによって、耐トラッキング性が向上すると推測される。また、(c)成分との比率が0.2~8.0であることで、耐トラッキング性能と剛性の高度な両立が可能となると考えられる。この理由は、(c)成分により形成される炭化導電路による耐トラッキング性の低下が適度に抑制されつつ、(c)成分による剛性向上効果が発揮されると考えられるためである。
本実施形態の樹脂組成物は、(d)リン酸エステル系難燃剤を含むことができる。(d)リン酸エステル系難燃剤を含む場合、(a1)ポリフェニレンエーテルの助難燃効果と(d)リン酸エステル系難燃剤の難燃性付与効果とが相まって、本実施形態の樹脂組成物に対する難燃性付与に大きな効果を奏する。
式(1)中、R1、R2、R3及びR4は、それぞれ、水素原子、ハロゲン原子、アルキル基、シクロアルキル基、アリール置換アルキル基、アリール基、ハロゲン置換アリール基、及びアルキル置換アリール基からなる群より選ばれるいずれかを表し、それぞれ同一であっても異なっていてもよい。Xはアリーレン基を表す。nは0、1、2、3、4または5の整数である。なお、n=0である場合は、式(1)の化合物は、リン酸エステル単量体を示す。nが1~5の整数である場合は、式(1)の化合物は、リン酸エステルの縮合物を示す。
本実施形態の樹脂組成物は、必須成分である(a1)成分、(b)成分および(c)成分ならびに任意成分である(a2)成分、(a3)成分および(d)成分の他に、ポリフェニレンエーテル樹脂組成物の、耐トラッキング性能および剛性を損なわない範囲で、必要に応じてその他の成分を含有してもよい。
本実施形態の樹脂組成物は、必須成分および任意成分を溶融混練することにより製造することができる。例えば、特開2018-062608号公報に記載の装置および条件を採用することができる。
1.本実施形態の樹脂組成物に含まれる(a)成分と(b)成分の全量又は一部を溶融混練し(第一混練工程)、第一混練工程で得られた溶融状態の混練物に対し、樹脂組成物の残りの成分を供給して溶融混練(第二混練工程)する製造方法。
2.本実施形態の樹脂組成物に含まれる(a)~(d)成分の全量を溶融混練する方法。
本実施形態の成形品は、本実施形態のポリフェニレンエーテル樹脂組成物を含む。本実施形態の成形品の形状には特に制限はなく、例えば、フィルム状、シート状または箱状等が挙げられる。
本実施形態の樹脂組成物の用途は、特に限定されない。本実施形態の樹脂組成物は、耐トラッキング性能、剛性が重要な用途に使用でき、電気部品、電子部品及び自動車用電気電子部品に好適に使用可能である。
実施例及び比較例に用いた測定方法を以下に示す。
得られた樹脂組成物ペレットを、シリンダー温度280℃に設定した小型射出成形機(商品名:EC75SXII、東芝機械社製)に供給し、金型温度80℃、射出圧力120MPa、射出時間15秒、冷却時間20秒の条件で成形し、評価用ISOダンベルを作製した。このISOダンベルについて、ISO 178に従い、曲げ弾性率(MPa)を測定し、剛性を評価した。曲げ弾性率の値が大きい程、剛性に優れていると判定した。
得られた樹脂組成物のペレットを、シリンダー温度280℃に設定した小型射出成形機(商品名:EC75SXII、東芝機械社製)に供給し、金型温度80℃、射出圧力120MPaの条件で、70mm×70mm×3mmの平板に成形した。その平板について、IEC60112:2003(使用電解液:溶液A、滴下数:50滴)に準じて、トラッキング破壊が発生しない最大電圧(V)を測定し、耐トラッキング性を評価した。最大電圧値が大きい程、耐トラッキング性に優れていると判定した。
・ポリ(2,6-ジメチル-1,4-フェニレンエーテル)「商品名:S201A 旭化成社製」、還元粘度(0.5g/dLのクロロホルム溶液、30℃測定、ウベローデ型粘度管で測定):0.5dL/g。
・ポリスチレン「商品名:ポリスチレン685 PSJ社製」
ゴム成分を含まないポリスチレン、即ち、ゴム強化されていないポリスチレンである。
・ハイインパクトポリスチレン「商品名:CT60 Petrochemicals社製」
・SEBS「商品名:TAIPOL6151 TSRC社製」
・酸化チタン「商品名:TIOXIDE R-TC30 Huntsman社製」、平均粒子径(平均一次粒径):0.21μm、結晶構造:ルチル型
(c-1)ケイ酸カルシウム系繊維状物:ワラストナイト「商品名:KTP-H02S 関西マテック社製」、熱伝導率2.7[W/(m・K)]
(c-2)タルク「商品名:クラウンタルクPK-MMB 松村産業社製」、熱伝導率5.2~10.7[W/(m・K)]
(c‘-1)ガラス繊維「商品名:ECS03T-249 日本電気硝子社製」熱伝導率1.0[W/(m・K)]
(c‘-2)マイカ「商品名:C-100IF レプコ社製」熱伝導率0.67[W/(m・K)]
(c‘-3)繊維状塩基性硫酸マグネシウム「商品名:モスハイジ 宇部マテリアルズ社製」熱伝導率0.1[W/(m・K)]
・芳香族縮合リン酸エステル「商品名:CR-741 大八化学工業社製」。
二軸押出機(ZSK-25:コペリオン社製)を用い、原料の流れ方向に対して上流側に第1原料供給口を設け、これより下流に第1真空ベント、第2原料供給口、第3原料供給口を設け、さらにその下流に第二真空ベントを設けた。シリンダー温度を上流側320℃~下流側300℃に設定した。表1に示す配合割合(質量部)に従い、第一供給口より(a)成分を供給し、第二供給口より(b)成分、第3供給口より(c)成分を供給した。液体の(d)リン酸エステル系難燃剤は、下流の圧入ノズルから供給して溶融混練した。
実施例1において、配合を表1~3に示すように変更したこと以外は、実施例1と同様にして操作を行い、樹脂ペレットを得た。
Claims (10)
- (a)樹脂成分と、
(b)酸化チタンと、
(c)無機フィラーと、
を含み、
前記(c)無機フィラーは、熱伝導率が2~12[W/(m・K)]であり、
前記(a)樹脂成分は、前記(a)樹脂成分100質量部のうち、(a1)ポリフェニレンエーテルを50~90質量部含み、
前記(b)酸化チタンの量は、前記(a)樹脂成分100質量部に対して、5~40質量部であり、
前記(c)無機フィラーの量は、前記(a)樹脂成分100質量部に対して、5~50質量部であり、かつ、
前記(b)酸化チタンと前記(c)無機フィラーとの質量比((b)/(c))が、0.2~8.0である、ポリフェニレンエーテル樹脂組成物。 - 前記(c)無機フィラーが、(c-1)ケイ酸カルシウム系繊維状物、及び(c-2)タルクからなる群から選ばれる1種以上である、請求項1に記載のポリフェニレンエーテル樹脂組成物。
- 前記(c)無機フィラーが、前記(c-1)ケイ酸カルシウム系繊維状物である、請求項2に記載のポリフェニレンエーテル樹脂組成物。
- 前記(c-1)ケイ酸カルシウム系繊維状物が、ワラストナイトである、請求項2に記載のポリフェニレンエーテル樹脂組成物。
- 前記(b)酸化チタンと前記(c)無機フィラーとの合計含有量が、前記(a)樹脂成分100質量部に対して15~90質量部である、請求項1~4のいずれか一項に記載のポリフェニレンエーテル樹脂組成物。
- 前記(a)樹脂成分は、前記(a)樹脂成分100質量部のうち、(a2)ポリスチレン系樹脂を1~49質量部含む、請求項1~5のいずれか一項に記載のポリフェニレンエーテル樹脂組成物。
- 前記(a)樹脂成分は、前記(a)樹脂成分100質量部のうち、(a3)水添ブロック共重合体を1~49質量部含む、請求項1~6のいずれか一項に記載のポリフェニレンエーテル樹脂組成物。
- 前記(a)樹脂成分100質量部に対して、(d)リン酸エステル系難燃剤を5~30質量部含む、請求項1~7のいずれか一項に記載のポリフェニレンエーテル樹脂組成物。
- 前記(d)リン酸エステル系難燃剤が、リン酸エステルの縮合物である、請求項8に記載のポリフェニレンエーテル樹脂組成物。
- 請求項1~9のいずれか一項に記載のポリフェニレンエーテル樹脂組成物を含む、成形品。
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US18/552,188 US20240174856A1 (en) | 2021-03-29 | 2022-03-28 | Polyphenylene ether resin composition and molded article |
JP2023511297A JPWO2022210593A1 (ja) | 2021-03-29 | 2022-03-28 | |
CN202280007888.4A CN116529305A (zh) | 2021-03-29 | 2022-03-28 | 聚苯醚树脂组合物和成型品 |
EP22780804.5A EP4317289A4 (en) | 2021-03-29 | 2022-03-28 | POLY(PHENYLENE ETHER) RESIN COMPOSITION AND MOLDED ARTICLE |
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2022
- 2022-03-28 EP EP22780804.5A patent/EP4317289A4/en active Pending
- 2022-03-28 CN CN202280007888.4A patent/CN116529305A/zh active Pending
- 2022-03-28 WO PCT/JP2022/015165 patent/WO2022210593A1/ja active Application Filing
- 2022-03-28 JP JP2023511297A patent/JPWO2022210593A1/ja active Pending
- 2022-03-28 US US18/552,188 patent/US20240174856A1/en active Pending
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US20240174856A1 (en) | 2024-05-30 |
EP4317289A1 (en) | 2024-02-07 |
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