WO2022107409A1 - 通信機器用部品 - Google Patents
通信機器用部品 Download PDFInfo
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- WO2022107409A1 WO2022107409A1 PCT/JP2021/031202 JP2021031202W WO2022107409A1 WO 2022107409 A1 WO2022107409 A1 WO 2022107409A1 JP 2021031202 W JP2021031202 W JP 2021031202W WO 2022107409 A1 WO2022107409 A1 WO 2022107409A1
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- 238000001125 extrusion Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 125000001188 haloalkyl group Chemical group 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- PXZQEOJJUGGUIB-UHFFFAOYSA-N isoindolin-1-one Chemical compound C1=CC=C2C(=O)NCC2=C1 PXZQEOJJUGGUIB-UHFFFAOYSA-N 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 229920004889 linear high-density polyethylene Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- HNXBILKEHPSDSB-IBGZPJMESA-N n-[(2r)-3-(5,6-dihydrobenzo[b][1]benzazepin-11-yl)-2-hydroxypropyl]-4-(trifluoromethoxy)benzenesulfonamide Chemical compound C([C@H](O)CN1C2=CC=CC=C2CCC2=CC=CC=C21)NS(=O)(=O)C1=CC=C(OC(F)(F)F)C=C1 HNXBILKEHPSDSB-IBGZPJMESA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
- DGBWPZSGHAXYGK-UHFFFAOYSA-N perinone Chemical compound C12=NC3=CC=CC=C3N2C(=O)C2=CC=C3C4=C2C1=CC=C4C(=O)N1C2=CC=CC=C2N=C13 DGBWPZSGHAXYGK-UHFFFAOYSA-N 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920005638 polyethylene monopolymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920005629 polypropylene homopolymer Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- 238000012887 quadratic function Methods 0.000 description 1
- IZMJMCDDWKSTTK-UHFFFAOYSA-N quinoline yellow Chemical compound C1=CC=CC2=NC(C3C(C4=CC=CC=C4C3=O)=O)=CC=C21 IZMJMCDDWKSTTK-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 235000013799 ultramarine blue Nutrition 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/08—Oxygen-containing compounds
-
- 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
- C08L71/123—Polyphenylene oxides not modified by chemical after-treatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
-
- 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 parts for communication equipment.
- Polyphenylene sulfide is used in a wide range because it has excellent mechanical properties, electrical properties, and heat resistance, and also has excellent dimensional stability. In particular, there is a demand for a material capable of exhibiting antenna characteristics in a high frequency band of 1 GHz or higher.
- the antenna characteristics can be exhibited by using a matrix resin containing polyphenylene ether, titanium dioxide, a heat resistant material, and a material capable of forming a circuit by applying conductive ink or the like as a component for communication equipment.
- a component for communication equipment whose dielectric constant can be controlled, has a low dielectric loss tangent, and can form a circuit, wiring, or board with metal.
- circuits, wiring, and boards can be formed, it can also be used as a metal substitute for parts for communication equipment.
- a surface-mounted dielectric antenna used for mobile communication devices such as mobile phones and wireless LANs
- a dielectric ceramic unit, a resin unit, and a ceramic-containing resin composition has been proposed.
- the antenna substrate is made of a single ceramic or a single resin, or a styrene-based resin having a syndiotactic structure having a specific dielectric constant of about 18 and having good plating properties.
- a foam and a method for producing the same are disclosed.
- a resin composition in which a spherical dielectric ceramic powder is mixed with a resin material in a proportion of 40 vol% to 70 vol% (volume%) in the composition, and the aspect ratio is high because high filling is possible.
- a composite material in which a titanium acid metal salt fiber adjusted to 3 to 5 and a composite material thereof is combined with a thermoplastic resin or the like is disclosed.
- the antenna can be miniaturized by increasing the dielectric constant using titanium dioxide having a large dielectric constant, but spherical titanium dioxide needs to be filled with a high concentration in order to increase the dielectric constant, and flows as a resin. There is a problem that the property is deteriorated and it is difficult to use it for a part having a complicated shape. Further, as disclosed in Patent Document 5, high dielectric constant can be achieved by using titanium dioxide having a large aspect ratio, but the dielectric loss tangent also increases at the same time, and it is difficult to improve the antenna performance. Further, since it is used as a communication device, for example, an antenna, there is a demand for a material capable of forming a circuit, wiring, or a substrate using metal.
- an object of the present invention is to provide a component for a communication device capable of controlling a dielectric constant while maintaining a low dielectric loss tangent and forming a circuit, wiring, or substrate using metal.
- the present inventors have controlled the dielectric constant of a composition containing (A) a matrix resin and (B) titanium dioxide by setting a specific composition.
- A a matrix resin
- B titanium dioxide
- a component for communication equipment having a molded product made of a resin composition contains (A) a matrix resin and (B) titanium dioxide.
- the (A) matrix resin contains (A) a polyphenylene ether-based resin. Conjugate diene monomer unit with at least one block mainly composed of the (A) polyphenylene ether-based resin and (Ab) aromatic vinyl monomer unit with respect to 100 parts by mass of the (A) matrix resin.
- the total content of the block copolymer containing at least one block mainly composed of the above and / or the hydrogenated additive of the block copolymer is 75 parts by mass or more.
- the average L / D of (B) titanium dioxide is 1.2 or more and 6.0 or less, and the content of titanium dioxide having an L / D of more than 7.0 is less than 10%.
- Parts for communication equipment which are characterized by this.
- the resin composition is a block copolymer and / or a block copolymer containing (Ab) at least one block mainly composed of an aromatic vinyl monomer unit and at least one block mainly composed of a conjugated diene monomer unit.
- the component for communication equipment according to [1] which comprises a hydrogenated additive of the block copolymer.
- the component for communication equipment according to [1] or [2], wherein the resin composition further contains (A-c) a polystyrene-based resin.
- [4] The component for communication equipment according to any one of [1] to [3], which contains 10 parts by mass or more and 90 parts by mass or less of (B) titanium dioxide with respect to 100 parts by mass of the resin composition.
- [5] The component for communication equipment according to any one of [1] to [4], which contains 50 parts by mass or more of the (A) polyphenylene ether-based resin with respect to 100 parts by mass of the (A) matrix resin.
- [6] The component for communication equipment according to any one of [1] to [5], which contains 10 parts by mass or less of polyamide and polyphenylene sulfide in total with respect to 100 parts by mass of the matrix resin (A).
- the mass ratio x (mass%) of the inorganic substance to 100% by mass of the resin composition and the dielectric constant y at the measurement frequency of 1 GHz of the resin composition satisfy the relationship of y> 0.0006 x 2 + 0.021 x + 2.52.
- the component for communication equipment according to any one of [1] to [76] which has a plurality of the molded products and has a structure in which the plurality of molded products are fitted.
- the present invention it is possible to obtain a component for communication equipment in which the dielectric constant can be controlled while maintaining a low dielectric loss tangent and a circuit, wiring, or substrate can be formed using metal.
- the communication device component of the present embodiment has a molded product made of a resin composition.
- the resin composition contains (A) a matrix resin, (B) titanium dioxide, and the (A) matrix resin is (A) a polyphenylene ether-based resin, and optionally (A-b) an aromatic vinyl simple substance. It contains a block copolymer containing at least one block mainly composed of a metric unit and at least one block mainly composed of a conjugated diene monomer unit, and / or a hydrogenated additive of the block copolymer.
- the total content of the component (A) and the component (Ab) with respect to 100 parts by mass of the matrix resin (A) is 75 parts by mass or more.
- the average L / D of the component (B) is 1.2 or more and 6.0 or less, and the content of titanium dioxide having an L / D of more than 7.0 is less than 10%.
- the (A) matrix resin refers to resin components excluding inorganic fillers and the like.
- resin components include various resins used for molding, for example, polyphenylene ether-based resin, polyester-based resin, polyamide-based resin, polycarbonate-based resin, vinyl-based resin, olefin-based resin, acrylic-based resin, and polyphenylene. Examples thereof include sulphide and aromatic resins.
- the (A) matrix resin contains (A) a polyphenylene ether-based resin.
- the matrix resin (A) can also include resin components such as olefin-based thermoplastic elastomers and hydrogenated block copolymers mainly for improving impact resistance.
- olefin-based thermoplastic elastomer examples include polyolefin homopolymers such as polyethylene and polypropylene; and polyolefin copolymers such as ethylene-propylene copolymer, ethylene-butylene copolymer, and ethylene-octene copolymer.
- polyethylene homopolymer examples include high-pressure low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), and high-density polyethylene (HDPE).
- Examples of the hydrogenated block copolymer include hydrogenated block copolymers obtained by hydrogenating a block copolymer composed of a polystyrene block and a conjugated diene compound polymer block.
- the structure of the block copolymer before hydrogenation is not particularly limited.
- SBS and SB-SB are used.
- an organic compound used as an additive for example, maleic anhydride, a phenolic stabilizer, or the like can also be contained in the (A) matrix resin as a resin component.
- (A-a) Polyphenylene ether-based resin Specific examples of the above (A) polyphenylene ether-based resin (hereinafter, may be simply referred to as “(AA) component”) include, for example, 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, and further, a copolymer of 2,6-dimethylphenol and other phenols (for example, 2,3,6-as described in Japanese Patent Publication No. 52-17880.
- Polyphenylene ether copolymers such as (polymers with trimethylphenol and copolymers with 2-methyl-6-butylphenol) can also be mentioned.
- particularly preferable polyphenylene ethers include poly (2,6-dimethyl-1,4-phenylene ether), a copolymer of 2,6-dimethylphenol and 2,3,6-trimethylphenol, or these. It is a mixture.
- Examples of the component (A) include a homopolymer having a repeating unit structure represented by the following formula (1) and a copolymer having a repeating unit structure represented by the following formula (1). ..
- the above-mentioned component (Aa) may be used alone or in combination of two or more.
- R 1 , R 2 , R 3 , and R 4 each independently have a hydrogen atom, a halogen atom, a primary alkyl group having 1 to 7 carbon atoms, and 1 to 7 carbon atoms.
- the method for producing the (Aa) polyphenylene ether-based resin is not particularly limited as long as it can be obtained by a known method, and for example, a complex of a ferrous salt and an amine can be used as a catalyst, for example.
- a method described in US Pat. No. 3,306,874, which is produced by oxidatively polymerizing 2,6-xylenol, and No. 3,306,875, No. 3257357 and No. 32573358 examples thereof include the production methods described in Japanese Patent Application Laid-Open No. 50-51197, Japanese Patent Application Laid-Open No. 52-17880, and Japanese Patent Application Laid-Open No. 63-152628.
- the preferred range of the reduced viscosity (measured with 0.5 g / dL chloroform solution, 30 ° C., Ubbelohde type viscosity tube) of the above (Aa) polyphenylene ether resin is 0.30 to 0.80 dL / g, more preferably 0. It is .35 to 0.75 dL / g, most preferably 0.38 to 0.55 dL / g.
- the reducing viscosity of the polyphenylene ether-based resin is in this range, it is preferable because it has excellent properties such as impact resistance and heat resistance.
- stabilizers for stabilizing the (Aa) polyphenylene ether-based resin, various known stabilizers can also be preferably used.
- stabilizers are metal-based stabilizers such as zinc oxide and zinc sulfide, hindered phenol-based stabilizers, phosphorus-based stabilizers, and organic stabilizers such as hindered amine-based stabilizers.
- metal-based stabilizers such as zinc oxide and zinc sulfide
- hindered phenol-based stabilizers hindered phenol-based stabilizers
- phosphorus-based stabilizers phosphorus-based stabilizers
- organic stabilizers such as hindered amine-based stabilizers.
- the component (Aa) is produced by reacting the homopolymer and / or the copolymer with a styrene-based monomer or a derivative thereof, and / or an ⁇ , ⁇ -unsaturated carboxylic acid or a derivative thereof. It may be the obtained modified polyphenylene ether.
- the amount of graft or addition of the styrene-based monomer or its derivative and / or ⁇ , ⁇ -unsaturated carboxylic acid or its derivative is 0.01 to 100% by mass of the component (Aa). It is preferably 10% by mass.
- Examples of the method for producing the modified polyphenylene ether include a method of reacting in the presence or absence of a radical generator in a molten state, a solution state or a slurry state at a temperature of 80 to 350 ° C.
- polyphenylene ether a mixture of the homopolymer and / or the copolymer and the modified PPE in any ratio may be used.
- the content of the (A) polyphenylene ether-based resin is 50 parts by mass or more with respect to 100 parts by mass of the (A) matrix resin. It is preferably 55 parts by mass or more, and more preferably 60 parts by mass or more. Further, from the viewpoint of formability, it is preferably 85 parts by mass or less.
- (Ab) A block copolymer containing at least one block mainly composed of an aromatic vinyl monomer unit and at least one block mainly composed of a conjugated diene monomer unit, and / or the same.
- Block copolymer hydrogen additive In this embodiment, a block copolymer comprising (Ab) at least one block mainly composed of an aromatic vinyl monomer unit and at least one block mainly composed of a conjugated diene monomer unit. And / or a hydrogenated product of the block copolymer (hereinafter, may be simply referred to as “(Ab) component”) may be further contained, and preferably contained.
- the hydrogenated block copolymer is at least one aromatic vinyl polymer block mainly composed of an aromatic vinyl monomer unit and at least one conjugated diene polymer block mainly composed of a conjugated diene monomer unit.
- aromatic vinyl polymer block "mainly composed of aromatic vinyl monomer unit” means a block in which 50% by mass or more is an aromatic vinyl monomer unit.
- the aromatic vinyl monomer unit is more preferably 70% by mass or more, further preferably 80% by mass or more, and most preferably 90% by mass or more.
- conjugated diene polymer block mainly a conjugated diene monomer unit
- the conjugated diene monomer unit is more preferably 70% by mass or more, further preferably 80% by mass or more, and most preferably 90% by mass or more.
- the above-mentioned aromatic vinyl polymer block may be, for example, a copolymer block in which a small amount of conjugated diene compound is randomly bonded to the aromatic vinyl polymer block.
- the above-mentioned conjugated diene polymer block for example, it may be a copolymer block in which a small amount of aromatic vinyl compound is randomly bonded to the conjugated diene polymer block.
- the aromatic vinyl compound used to form the aromatic vinyl monomer unit is not particularly limited, and examples thereof include styrene, ⁇ -methylstyrene, vinyltoluene, and the like, and one or more selected from these. Compounds are used, of which styrene is particularly preferred.
- the conjugated diene compound used for forming the conjugated diene polymer block is not particularly limited, and examples thereof include butadiene, isoprene, piperylene, 1,3-pentadiene, and the like, and one or more compounds selected from these. , But butadiene, isoprene and combinations thereof are preferable.
- the microstructure of the conjugated diene polymer block portion of the block copolymer has a total amount of 1,2-vinyl content or 1,2-vinyl content and 3,4-vinyl content (total vinyl bond amount) of 5 to 5. It is preferably 80%, more preferably 10 to 70%.
- the total vinyl bond amount can be measured using an infrared spectrophotometer.
- the non-hydrogenated block copolymer used for producing the hydrogenated additive (hydrogenated block copolymer) of the block copolymer includes an aromatic vinyl polymer block (A) and a conjugated diene polymer block (B). It is preferably a block copolymer having a binding type selected from AB type, ABA type, and ABAB type. Of these, block copolymers having different bonding forms may be used in combination. Among these, it is more preferable to have a binding form selected from ABAA type and ABAB type, and it is further preferable to have a binding form of ABAA type.
- component (Ab) used in the present embodiment is preferably a partially hydrogenated block copolymer (partially hydrogenated block copolymer).
- the partially hydrogenated block copolymer controls the aliphatic double bond of the conjugated diene polymer block in the range of more than 0% and less than 100% by hydrogenating the above-mentioned non-hydrogenated block copolymer. It means what was done.
- the preferable hydrogenation rate of the partially hydrogenated block copolymer is 50% or more and less than 100%, more preferably 80% or more and less than 100%, and most preferably 98% or more and less than 100%.
- the component (Ab) preferably has a number average molecular weight of 30,000 or more and less than 300,000. When this is in this range, a composition excellent in fluidity, impact strength, and flame retardancy can be obtained.
- the method for evaluating the number average molecular weight of the component (Ab) in the resin composition is shown below. That is, the component (Ab) is separated by using a solvent showing good solubility in the component (Ab) and poor solubility in the polyphenylene ether-based resin (Aa), for example, chloroform. .. This was measured with an ultraviolet spectrodetector [UV-41: Showa Denko KK] using a gel permeation chromatography measuring device [GPC SYSTEM21: Showa Denko KK] and converted to standard polystyrene. To find the number average molecular weight.
- UV-41 Showa Denko KK
- GPC SYSTEM21 Showa Denko KK
- the measurement conditions may be as follows [solvent: chloroform, temperature: 40 ° C., column: sample side (KG, K-800RL, K-800R), reference side (K-805L x 2), flow rate. 10 mL / min, measurement wavelength: 254 nm, pressure 15-17 kg / cm 2 )].
- a low molecular weight component may be detected due to catalyst deactivation during polymerization, but in that case, the low molecular weight component is not included in the molecular weight calculation.
- the low molecular weight component shall refer to a component having a molecular weight of 3000 or less.
- the calculated correct molecular weight distribution is in the range of 1.0 to 1.1.
- block copolymers as the component (Ab) that can be used in these embodiments have different bonding forms and different aromatic vinyl compound species, unless contrary to the spirit of the present embodiment.
- Different types of conjugated diene compounds, different 1,2-linked vinyl content or 1,2-linked vinyl content and 3,4-bonded vinyl content, different aromatic vinyl compound component content, Two or more kinds may be mixed and used for each of those having different hydrogen addition rates.
- these block copolymers as the component (Ab) that can be used in the present embodiment may be block copolymers that are completely or partially modified.
- the modified block copolymer referred to here is at least one carbon-carbon double bond or triple bond in the molecular structure, and at least one carboxylic acid group, acid anhydride group, amino group, hydroxyl group or.
- a method of reacting a block copolymer with a modified compound in a solution at a temperature below the softening point of the block copolymer (3) a method of reacting the block copolymer with a modified compound at a temperature below the softening point of the block copolymer.
- Examples thereof include a method in which the block copolymer and the modified compound are reacted without melting, and any of these methods may be used, but the method (1) is preferable, and further, in the presence of a radical initiator in (1). The method used is most preferred.
- At least one modification having at least one carbon-carbon double bond or triple bond in the molecular structure and at least one carboxylic acid group, acid anhydride group, amino group, hydroxyl group or glycidyl group As the “compound”, the same modified compound as described in the modified polyphenylene ether can be used.
- the preferable content of the component (Ab) is 1 to 40 parts by mass, more preferably 2 to 35 parts by mass, when the polyphenylene ether-based resin (A) is 100 parts by mass. More preferably, it is 2 to 30 parts by mass.
- the total content with the components is 75 parts by mass or more, preferably 80 parts by mass or more, and more preferably 85 parts by mass or more.
- the (A) matrix resin of the present embodiment may contain a polystyrene-based resin.
- the polystyrene-based resin include atactic polystyrene, rubber-reinforced polystyrene (high-impact polystyrene, HIPS), a styrene-acrylonitrile copolymer (SAN) having a styrene content of 50% by weight or more, and the styrene-acrylonitrile copolymer.
- HIPS high-impact polystyrene
- SAN styrene-acrylonitrile copolymer
- examples thereof include ABS resin reinforced with rubber, and atactic polystyrene and / or high-impact polystyrene are preferable.
- the polystyrene-based resin may be used alone or in combination of two or more.
- the preferable content of the (A-c) polystyrene-based resin in the present embodiment is 0 to 100 parts by mass, more preferably 0 to 100 parts by mass, when the (A-a) polyphenylene ether-based resin is 100 parts by mass. It is 90 parts by mass, more preferably 0 to 80 parts by mass.
- Examples of other resin components in the (A) matrix resin of the present embodiment are polyolefins such as polyester and polypropylene, polyamides, polyphenylene sulfide and the like.
- the specific preferable addition amount of each of the other resin components is 15% by mass or less, more preferably 13% by mass or less, still more preferably 10%, respectively, when the total resin composition is 100% by mass. It is less than mass%.
- the amount of the other resin components to be added is preferably 30% by mass or less, more preferably 25% by mass or less, and 20% by mass, when the total amount of the resin composition is 100% by mass. It is more preferably% or less.
- the total content of polyamide and polyphenylene sulfide with respect to 100 parts by mass of (A) matrix resin is preferably 10 parts by mass or less, preferably 5 parts by mass. It is more preferably less than or equal to 1 part by mass, further preferably 1 part by mass or less, and may be 0 part by mass. At least one of the polyamide and polyphenylene sulfide may be contained, but it is preferable that both the polyamide and the polyphenylene sulfide are contained.
- the resin composition of the present embodiment has excellent dielectric properties by containing titanium dioxide having a specific shape. Titanium dioxide, which is generally used as a pigment for resins and paints, is divided into two types, rutile type and anatase type, depending on its crystal morphology, and both can be used, but from the viewpoint of dielectric properties, it may be rutile type. preferable.
- the average L / D of (B) titanium dioxide in the resin composition is 1.2 or more and 6.0 or less from the viewpoint of controlling the dielectric constant and reducing the dielectric loss tangent.
- the average L / D is preferably 1.3 or more and 5.5 or less, and the average L / D is preferably 1.5 or more and 5.5 or less, more preferably 2.0 or more and 4.5 or less.
- the dielectric constant can be increased by adding a small amount of titanium dioxide, and the molding processability tends to be good. ..
- the average L / D of (B) titanium dioxide in the resin composition is 6.0 or less, the dielectric constant tends to be increased while keeping the dielectric loss tangent low.
- the average L / D of titanium dioxide in the resin composition can be obtained by the following method. For example, the resin composition is incinerated in a constant temperature temperature rise electric furnace or the like, only the resin component is burned, and then the remaining titanium dioxide is observed with a scanning electron microscope to determine the longest and shortest diameters of 100 titanium dioxides. A method of measuring and obtaining an average L / D can be mentioned. Specifically, it can be measured by the method disclosed in the examples.
- the content of titanium dioxide having an excessively large L / D is preferably less than 10% with respect to the total number of titanium dioxide (100%) contained in the resin composition.
- the preferable content of titanium dioxide having an L / D of more than 7.0 is less than 8%, more preferably less than 5%.
- the average L / D of titanium dioxide can be adjusted by adjusting the L / D of the fibrous titanium dioxide as a raw material and by using the fibrous titanium dioxide and the particulate titanium dioxide in combination.
- It can also be adjusted according to the kneading conditions, and can be adjusted by changing the place where the raw material is put into the twin-screw kneader or changing the screw pattern of the kneader. Specifically, by setting the condition that the share of titanium dioxide is applied at the time of kneading, for example, the raw material input place is on the upstream side, or the screw pattern is set to be a pattern that makes the kneading stronger, the average L / of titanium dioxide is set. D can be made smaller.
- the titanium dioxide used as a raw material of the resin composition (hereinafter, may be referred to as “raw material titanium dioxide”) is, for example, a known fiber having an average fiber diameter of 0.2 to 1.0 ⁇ m and an average fiber length of 1 to 6 ⁇ m. Titanium dioxide can be used. Furthermore, in order to adjust the average L / D, it is also possible to use fibrous titanium dioxide and particulate titanium dioxide in combination.
- fibrous titanium dioxide As the fibrous titanium dioxide as the raw material titanium dioxide, fibrous titanium dioxide having an average fiber diameter of 0.2 to 0.8 ⁇ m and an average fiber length of 2 to 5 ⁇ m is preferable, and rutile type fibrous titanium dioxide is further used. More preferred.
- the average fiber diameter of the raw material titanium dioxide is 0.2 ⁇ m or more, rat holes are generated in the addition hopper in a normal single-screw or twin-screw kneader, and the accompanying air and nitrogen are discharged from the extruder raw material inlet. By preventing backflow, it can be added stably, it becomes easy to obtain a uniform resin composition by melt-kneading, and the productivity tends to be improved without reducing the discharge amount.
- the specific surface area becomes smaller, deterioration of the resin material tends to be prevented.
- the average fiber diameter of the raw material titanium dioxide is 0.8 ⁇ m or less, blocking can be prevented, the raw material titanium dioxide can be stably supplied, and it tends to be easy to obtain a uniform resin composition by melt-kneading. Further, in a regular single-screw or twin-screw kneader, the discharge amount is not reduced and the productivity tends to be improved.
- the surface of titanium dioxide may be treated in advance with an inorganic or organic treatment agent before use.
- the inorganic treatment agent alumina, zirconia, silica and a mixture thereof are used.
- Silica has high water absorption, and when it is made into a resin composition, it is easily affected by moisture such as decomposition of resin components and poor appearance of molded products. Therefore, alumina and zirconia are preferable for inorganic treatment, and silica is used in combination. In some cases, a small amount of silica is preferable.
- the amount of these inorganic treatment agents to be used may be appropriately selected and determined, but is usually 2 to 10% by mass with respect to 100% by mass of titanium dioxide.
- the adsorbed water contained in the inorganic treatment layer on the surface of titanium oxide causes problems such as a decrease in strength and poor appearance of the resin molded product obtained by molding the resin composition. May be. On the contrary, if the amount is too small, the dispersibility may be insufficient, and the improvement effect may be insufficient.
- organic treatment agent examples include an organic silane compound having an alkoxy group, an epoxy group, an amino group or a Si—H bond, an organic silicone compound and the like.
- An organic silicone compound having a Si—H bond is preferable from the viewpoint of dispersibility in the resin composition, adhesion to the resin component, and the like.
- hydrogen polysiloxane is particularly preferable.
- the amount of these organic treatment agents used is usually 0.5 to 5% by weight, preferably 1 to 3% by weight, based on 100% by mass of titanium dioxide.
- the content of the treating agent is preferably 8% by mass or less when the fibrous titanium dioxide is 100% by mass.
- the content of the component (B) of the present embodiment is preferably 10 parts by mass or more and 90 parts by mass or less with respect to 100 parts by mass of the resin composition from the viewpoint of dielectric constant control and moldability.
- the content is preferably 10 parts by mass or more and 90 parts by mass or less, 10 parts by mass or more and 85 parts by mass or less, and 15 parts by mass or more and 85 parts by mass or less with respect to 100 parts by mass of the resin composition. It may be 80 parts by mass or less, more preferably 70 parts by mass or less, and further preferably 60 parts by mass or less.
- the mass ratio of the component (B) to 100 parts by mass of the component (A) is preferably 20 parts by mass or more and 250 parts by mass or less, more preferably 20 parts, from the viewpoint of dielectric constant control and moldability. It is 2 parts by mass or more and 230 parts by mass or less, more preferably 25 parts by mass or more and 200 parts by mass or less, and particularly preferably 30 parts by mass or more and 200 parts by mass or less.
- the coloring method of the resin composition is not particularly limited, and one or more colorants selected from known organic dyes and inorganic pigments can be used.
- organic dyes examples include azo lake pigments, benzimidazolone pigments, dialilide pigments, azo pigments such as condensed azo pigments, phthalocyanine pigments such as phthalocyanine blue and phthalocyanine green, isoindolinone pigments, quinophthalone pigments and quinacridone pigments. , Perylene pigments, anthraquinone pigments, perinone pigments, condensed polycyclic pigments such as dioxazine violet, azine pigments, carbon black and the like.
- the carbon black has a dibutyl phthalate (DBP) absorption amount of less than 250 mL / 100 g, preferably less than 150 mL / 100 g, and a nitrogen adsorption specific surface area of less than 900 m 2 / g, more preferably less than 400 m 2 / g. Is preferable.
- DBP absorption amount and the nitrogen adsorption specific surface area referred to here are values measured by the methods specified in ASTM D2414 and JIS K6217, respectively.
- the azine dye include Solvent Black 5 (CI 50415, CAS No. 11099-03-9) and Solvent Black 7 (CI 50415: 1, CAS No. 8005-20-5) in Color Index. / 101357-15-7), Acid Black 2 (CI 50420, CAS No. 8005-03-6 / 68510-98-5).
- the inorganic pigment examples include metal oxides other than iron oxide such as zinc oxide and chromium oxide, and composite metal oxides such as titanium yellow, cobalt blue and ultramarine blue.
- the preferable amount of the colorant added is 2% by mass or less for carbon black, 2% by mass or less for azine dyes, and 8% by mass or less for inorganic pigments, assuming that the entire resin composition is 100% by mass. More preferable amounts are 1% by mass or less for carbon black, 1% by mass or less for azine dyes, and 5% by mass or less for inorganic pigments.
- an inorganic filler in addition to the above-mentioned components, an inorganic filler can be added at any stage as needed within a range that does not impair the effects of the present embodiment.
- Inorganic fillers include glass fiber, potassium titanate fiber, gypsum fiber, brass fiber, ceramic fiber, boron whisker fiber, mica, talc, silica, calcium carbonate, kaolin, calcined kaolin, wollastonite, zonotrite, apatite, and glass. Examples thereof include fibrous, granular, plate-like, or needle-like inorganic reinforcing materials such as beads, glass flakes, and titanium oxide. Two or more of these inorganic fillers can be used in combination. Among these, more preferable inorganic fillers include glass fibers, carbon fibers, and glass beads.
- the inorganic filler may be one which has been surface-treated by a known method using a surface-treating agent such as a silane coupling agent.
- a surface-treating agent such as a silane coupling agent.
- natural ore-based fillers often contain a small amount of iron element, it is necessary to select and use one that has been refined to remove iron element.
- each inorganic filler added is 15% by mass or less, more preferably 13% by mass or less, still more preferably 10% by mass, respectively, when the total resin composition is 100% by mass. % Or less.
- the preferable amount of the inorganic filler added is 30% by mass or less, more preferably 25% by mass or less, and 20% by mass, when the total amount of the resin composition is 100% by mass. The following is more preferable.
- the resin composition of the present embodiment has, as other additive components, a plasticizer (low molecular weight polyolefin, polyethylene glycol, fatty acid esters, etc.), an antioxidant, a nucleating agent, a fluidity improving agent, and the like.
- a plasticizer low molecular weight polyolefin, polyethylene glycol, fatty acid esters, etc.
- an antioxidant e.g., sodium metabisulfite
- nucleating agent e.g., sodium metabisulfite
- a fluidity improving agent e.g., sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite, sodium metabisulfite
- the specific preferable addition amount of each of the other components is 15% by mass or less, more preferably 13% by mass or less, still more preferably 10% by mass, respectively, when the total resin composition is 100% by mass. % Or less.
- the preferable amount of the other components to be added is preferably 30% by mass or less, more preferably 25% by mass or less, and 20% by mass, when the total amount of the resin composition is 100% by mass. The following is more preferable.
- the deflection temperature under load (DTUL) (° C.) of the resin composition of the present embodiment, a larger value indicates improvement in heat resistance, which is preferable.
- the deflection temperature under load (DTUL) is a value measured by the method described in Examples described later. Antenna parts for high frequencies generate a large amount of heat, and as the frequency increases, the heat generation increases, and a resin having high heat resistance is required. In particular, for antenna components having a frequency of 1 GHz or higher, a resin composition having a DTUL of 100 ° C. or higher is preferable, and the higher the heat resistance, the more preferable. A resin composition having a DTUL of 110 ° C. or higher is preferable for an antenna component having a frequency of 3 GHz or higher, and a resin composition having a DTUL of 120 ° C. or higher is preferable for an antenna component having a frequency of 4 GHz or higher.
- the dielectric loss tangent of the resin composition of the present embodiment has a smaller value, which indicates a reduction in the energy loss rate.
- the dielectric loss tangent refers to a value measured by the method described in Examples described later.
- the ratio of the dielectric constant to the dielectric loss tangent at the measurement frequency of 1 GHz is 1500 or more from the viewpoint of facilitating the dielectric constant control while maintaining the low dielectric loss tangent. It is preferably 2000 or more, more preferably 2250 or more, and even more preferably 2250 or more.
- the upper limit of the dielectric constant / dielectric loss tangent is not particularly limited, but can be 10000, can be 8000, can be 5000, and can be 4000.
- the mass ratio x (mass%) of the inorganic substance to 100% by mass of the resin composition and the measurement of the resin composition are measured from the viewpoint of facilitating the control of the dielectric constant while maintaining the molding processability.
- the dielectric constant y at a frequency of 1 GHz satisfies the relationship of y> 0.0006x2 + 0.021x + 2.52, more preferably y> 0.00065x2 + 0.026x + 2.52, and y>. It is more preferable to satisfy the relationship of 0.0007x2 + 0.031x + 2.52.
- the mass ratio x (mass%) of the inorganic substance to 100 mass% of the resin composition and the dielectric constant y at the measurement frequency of 1 GHz of the resin composition are y ⁇ 0.0060 x 2 + 0.105 x + 2. 52, y ⁇ 0.0045x2 + 0.092x+2.52, y ⁇ 0.0030x2 + 0.080x+2.52 can be satisfied.
- the "inorganic substance” refers to all the inorganic substances contained in the resin composition, and also includes (B) titanium dioxide.
- the inorganic substance other than titanium dioxide examples include, but are not limited to, the above-mentioned inorganic filler, a metal-based stabilizer in the (AA) polyphenylene ether-based resin, and an inorganic pigment.
- the "mass ratio of the inorganic substance” means the ratio of the total mass of all the inorganic substances contained in the resin composition.
- composition of a matrix resin component having a total content of 75 parts by mass or more of a block polymer containing at least one block mainly composed of a monomer unit and / or a hydrogenated additive of the block polymer Due to the limitation, the dielectric constant of the resin component is almost constant, and it has been confirmed by experiments that a quadratic function relationship holds between the mass ratio x of the inorganic substance and the dielectric constant. It represents the effect of improving the dielectric constant per ratio x. The above relationship tends to be satisfied by increasing the content of titanium dioxide with respect to the inorganic substance, and the above relationship tends to be satisfied by increasing the average L / D of titanium dioxide.
- the content of titanium dioxide with respect to 100% by mass of the inorganic substance is preferably 50% by mass or more, more preferably 60% by mass or more, further preferably 70% by mass or more, and 100%. It may be% by mass.
- the average L / D of titanium dioxide is 1.2 or more, preferably 1.3 or more, more preferably 1.5 or more, and 2.0 or more. Is even more preferable.
- the average L / D of titanium dioxide is preferably 6.0 or less.
- the molded product As a method of measuring the mass ratio x of the inorganic substance in the resin composition from the molded product, the molded product is placed in an electric furnace, the contained organic substance is incinerated, and the mass of the inorganic substance is measured from the obtained residue. , X can be calculated.
- the resin composition of the present embodiment can be produced by melt-kneading each component constituting the component (A), the raw material titanium dioxide, and if necessary, a colorant, an inorganic filler, and other components.
- the melt-kneading machine for melt-kneading is not limited to the following, but is, for example, a single-screw extruder, a multi-screw extruder including a twin-screw extruder, a roll, a kneader, a Brabender plastograph, a Banbury mixer, or the like.
- a twin-screw extruder is particularly preferable from the viewpoint of kneadability.
- Specific examples thereof include the ZSK series manufactured by WERNER & PFLEDERER, the TEM series manufactured by Toshiba Machine Co., Ltd., and the TEX series manufactured by Japan Steel Works, Ltd.
- the melt-kneading temperature can be selected from the temperature at which the crystalline resin can be heated and melted at a temperature equal to or higher than the melting point temperature of the crystalline resin and the non-crystalline resin can be heated and melted at a temperature equal to or higher than the glass transition temperature. It can be arbitrarily selected from 200 to 370 ° C.
- the L / D (barrel effective length / barrel inner diameter) of the extruder is preferably 20 or more and 60 or less, and more preferably 30 or more and 50 or less.
- the configuration of the extruder is not particularly limited, but for example, the first raw material supply port is on the upstream side, the first vacuum vent is downstream from the first raw material supply port, and the first vacuum vent is located on the upstream side in the flow direction of the raw material.
- a second raw material supply port is provided downstream (if necessary, a third and fourth raw material supply port may be further provided downstream of the second raw material supply port), and further downstream of the second raw material supply port.
- Those provided with a second vacuum vent are preferable.
- a kneading section is provided upstream of the first vacuum vent
- a kneading section is provided between the first vacuum vent and the second raw material supply port
- the second to fourth raw material supply ports and the second vacuum vent are provided. It is more preferable to provide a kneading section between them.
- the method of supplying the raw material to the second to fourth raw material supply ports is not particularly limited, but the side of the extruder is opened rather than the simple addition supply from the opening of the second to fourth raw material supply ports of the extruder.
- the method of supplying from the mouth using a forced side feeder tends to be more stable and is preferable.
- a method using a forced side feeder supplied from the extruder side is more preferable, and the forced side feeder is used as the second.
- a method of providing the powder of these raw materials at the fourth raw material supply port and supplying the powders of these raw materials in a divided manner is further preferable.
- the upper opening of the extruder 2nd to 4th raw material supply ports can also be used as an opening for removing the air carried together.
- the melt-kneading temperature and screw rotation speed in the melt-kneading step of the resin composition are not particularly limited, but the crystalline resin is heated at the melting point temperature or higher of the crystalline resin, and the non-crystalline resin is heated at the glass transition temperature or higher.
- the temperature at which it can be melted and processed without difficulty can be selected, and is usually arbitrarily selected from 200 to 370 ° C., and the screw rotation speed is 100 to 1200 rpm.
- each component constituting the component (A) and the raw material titanium dioxide are used in the first twin-screw extruder.
- a method of supplying to a raw material supply port, setting the heating and melting zone to the melting temperature of the thermoplastic resin, melting and kneading at a screw rotation speed of 100 to 1200 rpm, preferably 200 to 500 rpm, and melting and kneading can be mentioned.
- the positions for supplying each component constituting the component (A) and the raw material titanium dioxide to the twin-screw extruder may be collectively supplied from the first raw material supply port of the extruder as described above, and the second A raw material supply port, a third raw material supply port, and a fourth raw material supply port may be provided to supply each component separately.
- the oxygen concentration of each process line in the addition path of each raw material to the extruder is kept below 1.0% by volume.
- the addition route is not particularly limited, and specific examples thereof include a configuration such as a pipe, a heavy-duty feeder having a refill tank, a pipe, a supply hopper, and a twin-screw extruder in order from the stock tank.
- the method for maintaining the low oxygen concentration as described above is not particularly limited, but a method of introducing the inert gas into each process line having improved airtightness is effective. Usually, it is preferable to introduce nitrogen gas to maintain the oxygen concentration below 1.0% by volume.
- the resin composition of the present embodiment is used in a twin-screw extruder. It has the effect of further reducing the residue in the screw of the twin-screw extruder when it is manufactured by using it, and further reduces the generation of black spot foreign matter, carbide and the like in the resin composition obtained by the above-mentioned manufacturing method. Bring the effect.
- an extruder in which the oxygen concentration of each raw material supply port is controlled to less than 1.0% by volume is used, and any of the following methods 1 to 3 is carried out. It is preferable to do so.
- thermoplastic resins such as (A-a) polyphenylene ether-based resin and raw material titanium dioxide contained in the component (A) are in the form of powder, and have poor biteability into the extruder, and per hour. It is difficult to increase the production of plasticity. Further, since the residence time in the resin extruder is long, thermal deterioration is likely to occur.
- the resin composition obtained by the above-mentioned production methods 1 and 2 has improved biteability of titanium dioxide as compared with the resin composition obtained by the production method 3 and is excellent in the mixability of each component. It is possible to reduce decomposition due to thermal deterioration and generation of crosslinked products and carbides, increase the production amount of the resin per hour, and obtain a resin composition having excellent productivity and quality. preferable.
- the molded product of this embodiment is made of the above-mentioned resin composition.
- the method for producing the molded product of the present embodiment is not particularly limited, but it can be produced by, for example, injection molding. Further, it can also be used in the form of forming a coating layer made of a paint, a metal, a polymer of another kind, or the like on the surface of a molded product manufactured by such a method.
- the communication device component of this embodiment has one or more of the above-mentioned molded products.
- the communication equipment component may have a structure in which a plurality of molded products are fitted.
- the parts for communication equipment of this embodiment may be used by applying or plating metal ink.
- the communication equipment component of the present embodiment may have one or more selected from the group consisting of a metal circuit, a metal wiring, and a metal substrate.
- a molded product to which metal ink can be applied is preferably used as the molded product of the present embodiment.
- metal ink gold, silver, or copper can be used.
- inks containing a plurality of metals can also be used. The same applies to plating, and any metal can be used.
- the copper damage prevention property is high, and cracking after coating or plating of the metal ink can be reduced.
- the inkjet method can be used for a component for a communication device to form a drawing of a circuit pattern of a wiring board with a conductive metal paste.
- This circuit pattern forming method may be a known method (see, for example, Japanese Patent Application Laid-Open No. 2002-324966).
- the conductive metal paste used is a conductive metal paste in which ultrafine metal particles having a fine average particle size are uniformly dispersed in a thermosetting resin composition containing an organic solvent, and the fine average particle size is used.
- the metal ultrafine particles of the above are selected in the range of an average particle diameter of 1 to 100 nm, and the surface of the metal ultrafine particles has nitrogen and oxygen as groups capable of coordinating with the metal elements contained in the metal ultrafine particles.
- the fine metal ultrafine particles having an average particle size contained in the conductive metal paste include gold, silver, copper, platinum, palladium, tungsten, nickel, tantalum, bismuth, lead, indium, tin, zinc, and titanium. Fine particles made of one kind of metal or fine particles made of an alloy made of two or more kinds of metals selected from the group made of aluminum can be preferably used.
- the method of forming the circuit pattern is a step of drawing a circuit pattern composed of a coating film of the conductive metal paste by injecting and applying the conductive metal paste as minute droplets onto a substrate, and drawing conductivity.
- thermosetting resin has a step of heat-treating the coating film of the metal paste at least at a temperature at which the thermosetting resin is thermally cured.
- drawing means by the inkjet method there are a thermal drawing means that generates bubbles by heating foaming and ejecting droplets, and a piezo drawing means that ejects droplets by compression using a piezo element. ..
- the component for communication equipment of this embodiment can be used in applications where a material having a low dielectric loss tangent is required, especially in a high frequency region. In this application, if the loss becomes large, the performance as a member for communication equipment deteriorates, so control of dielectric loss tangent is an important technique. According to the present embodiment, it is possible to provide a component for a communication device capable of controlling the dielectric constant while maintaining a low dielectric loss tangent.
- the communication device member of the present embodiment can be suitably used for a communication device antenna, a receiver, and a base station.
- A-a Polyphenylene ether (hereinafter referred to as PPE)
- A-1 Polyphenylene ether resin obtained by oxidatively polymerizing 2,6-xylenol
- the reduced viscosity (0.5 g / dL, chloroform solution, measured at 30 ° C.) of the polyphenylene ether resin is 0.52 dL /.
- A-a-2) Polyphenylene ether resin obtained by oxidatively polymerizing 2,6-xylenol
- the reduced viscosity (0.5 g / dL, chloroform solution, measured at 30 ° C.) of the polyphenylene ether resin is 0.40 dL /. It was g.
- B Titanium dioxide (B-1) Fibrous titanium dioxide (trade name Typake (trademark) PFR404 manufactured by Ishihara Sangyo Co., Ltd.), average diameter 0.4 ⁇ m, average fiber length 3 ⁇ m, average L / D 7.5 (B-2) Fibrous titanium dioxide (trade name Typake (trademark) FTL-300 manufactured by Ishihara Sangyo Co., Ltd.), average diameter 0.4 ⁇ m, average fiber length 5 ⁇ m, average L / D 12.5 (B-3) Fibrous titanium dioxide (trade name Typake (trademark) FTL-400 manufactured by Ishihara Sangyo Co., Ltd.), average diameter 0.5 ⁇ m, average fiber length 10 ⁇ m, average L / D20 (B-4) Titanium dioxide in particles (trade name, Tioxide TM RTC-30 manufactured by VENATOR), average particle diameter 0.2 ⁇ m, titanium dioxide content 94% by mass.
- Hydrogenated Monomer Block Polymer (Tough Tech (trademark) H1051 manufactured by Asahi Kasei Co., Ltd.)
- the obtained pellets of the resin composition are supplied to a small injection molding machine (trade name: EC75-SXII, manufactured by Toshiba Machinery Co., Ltd.) in which the cylinder temperature is set to 250 to 350 ° C., and a mold is used.
- a flat plate of 80 mm ⁇ 40 mm ⁇ 1.5 mm was produced under the conditions of a temperature of 70 to 130 ° C., an injection pressure of 200 MPa, an injection time of 20 seconds, and a cooling time of 15 seconds. Moreover, the flat plate was cut and measured under the following conditions.
- Measuring device vector network analyzer HP8510C (Agilent Technologies) synchronized sweeper HP83651A (same as above) test set HP8517B (same as above)
- Specimen dimensions 2 mm x 4 mm x 40 mm
- Resonator shape Cylinder with inner diameter of 229 mm and height of 40 mm
- Measurement direction 1 direction
- Measurement frequency 1 GHz (TM010 mode)
- Pretreatment C-90h / 22 ⁇ 1 ° C / 60 ⁇ 5%
- Test environment 22 ° C / 56% RH It was judged that the lower the dielectric loss tangent, the better the performance.
- DTUL Deflection temperature under load
- the pellets of the obtained resin composition are supplied to a small injection molding machine (trade name: EC75-SXII, manufactured by Toshiba Machinery Co., Ltd.) set to a cylinder temperature of 250 to 350 ° C., a mold temperature of 70 to 130 ° C., and an injection pressure.
- An ISO dumbbell for evaluation was produced under the conditions of 200 MPa, an injection time of 20 seconds, and a cooling time of 15 seconds.
- the ISO dumbbell was cut to prepare a test piece for measuring the deflection temperature under load (DTUL). Using the above test piece for measuring the deflection temperature under load, the deflection temperature under load: DTUL (ISO 75: 1.80 MPa load) was measured. It was judged that the larger the value, the better the heat resistance.
- the obtained pellets of the resin composition are supplied to a small injection molding machine (trade name: EC75-SXII, manufactured by Toshiba Machinery Co., Ltd.) whose cylinder temperature is set to 250 to 350 ° C., and the mold temperature is 70 to 70.
- a flat plate having a size of 150 mm ⁇ 150 mm ⁇ 2.0 mm was produced under the conditions of 130 ° C., an injection pressure of 250 MPa, an injection time of 20 seconds, and a cooling time of 15 seconds.
- An antenna electrode is formed by adhering plated copper foil to the flat plate, mounting the same antenna device, 3 m away from the measurement antenna in an anechoic chamber, and using a network analyzer via a 50 ⁇ coaxial cable. It was connected to the antenna gain evaluation device that was used and the antenna characteristics were evaluated. When a specific directivity pattern is obtained, the antenna performance is excellent, and when a specific directivity pattern is not obtained, the antenna performance is not excellent.
- the obtained pellets of the resin composition are supplied to a small injection molding machine (trade name: EC75-SXII, manufactured by Toshiba Machinery Co., Ltd.) in which the cylinder temperature is set to 250 to 350 ° C., and the mold temperature is reached.
- a 90 mm ⁇ 50 mm ⁇ 2.5 mm flat plate was produced under the conditions of 70 to 130 ° C., an injection pressure of 200 MPa, an injection time of 20 seconds, and a cooling time of 15 seconds. Further, a copper foil film was sandwiched above and below the flat plate and adhered at 260 ° C. by a hot press.
- TQ-M7-VSP manufactured by Mitsui Mining & Smelting Co., Ltd. was used as the copper foil film.
- the copper foil peel strength of the bonded copper foil adhesive flat plate was measured with a tensile tester. Samples with a deflection temperature under load of 120 ° C or less cannot withstand the processing temperature, so measurement was not possible. The higher the value of the copper foil peel strength, the more suitable the material for circuit formation was evaluated.
- the L / D of each particle is calculated from the measurement results of the longest diameter and the shortest diameter of the same 500 titanium dioxides, and the content of titanium dioxide having an L / D of more than 7.0 is less than 10%.
- ⁇ was evaluated as ⁇ , and those having 10% or more were evaluated as ⁇ .
- Examples 1 to 16, Comparative Examples 1 to 5 (A) Matrix resin, (B) Titanium dioxide, and other components are blended in the composition shown in Table 1, and the resin composition is prepared using a twin-screw extruder ZSK-40 (COPERION WERNER & PFLEDERER, Germany). Manufactured. In this twin-screw extruder, a first raw material supply port is provided on the upstream side in the flow direction of the raw material, a first vacuum vent downstream of this, a second raw material supply port downstream of the first vacuum vent, and a second vacuum further downstream thereof. A vent was provided.
- each component is added according to the composition and addition method shown in Tables 1 and 2, and melted under the conditions of an extrusion temperature of 250 to 320 ° C., a screw rotation speed of 300 rpm, and a discharge rate of 100 kg / hour. Kneaded to produce pellets.
- Each of the above evaluations was performed using the obtained resin composition pellets. The evaluation results are shown in Table 1.
- the member for communication equipment of the present invention has industrial applicability such that it can be suitably used for an antenna for communication equipment, a receiver, and a base station.
- dielectric constant control is required in the high frequency region, it can be suitably used.
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Abstract
Description
[1]
樹脂組成物からなる成形品を有する通信機器用部品であって、
前記樹脂組成物は、(A)マトリクス樹脂、(B)二酸化チタンを含み、
前記(A)マトリクス樹脂は、(A-a)ポリフェニレンエーテル系樹脂を含み、
前記(A)マトリクス樹脂100質量部に対する、前記(A-a)ポリフェニレンエーテル系樹脂と、(A-b)芳香族ビニル単量体単位を主体とするブロックを少なくとも1つと共役ジエン単量体単位を主体とするブロックを少なくとも1つとを含むブロック共重合体及び/又は該ブロック共重合体の水素添加物と、の合計含有量が75質量部以上であり、
前記(B)二酸化チタンの平均L/Dが1.2以上6.0以下であり、L/Dが7.0を超える二酸化チタンの含有率が10%未満である、
ことを特徴とする、通信機器用部品。
[2]
前記樹脂組成物が、(A-b)芳香族ビニル単量体単位を主体とするブロックを少なくとも1つと共役ジエン単量体単位を主体とするブロックを少なくとも1つとを含むブロック共重合体及び/又は該ブロック共重合体の水素添加物を含む、[1]に記載の通信機器用部品。
[3]
前記樹脂組成物が、(A-c)ポリスチレン系樹脂をさらに含む、[1]又は[2]に記載の通信機器用部品。
[4]
前記樹脂組成物100質量部に対し、前記(B)二酸化チタンを10質量部以上90質量部以下含む、[1]~[3]のいずれかに記載の通信機器用部品。
[5]
前記(A)マトリクス樹脂100質量部に対し、前記(A-a)ポリフェニレンエーテル系樹脂を50質量部以上含む、[1]~[4]のいずれかに記載の通信機器用部品。
[6]
前記(A)マトリクス樹脂100質量部に対し、ポリアミド及びポリフェニレンサルファイドを合計で10質量部以下含む、[1]~[5]のいずれかに記載の通信機器用部品。
[7]
前記樹脂組成物100質量%に対する無機物質の質量割合x(質量%)と、前記樹脂組成物の測定周波数1GHzにおける誘電率yとが、y>0.0006x2+0.021x+2.52の関係を満たす、[1]~[6]のいずれかに記載の通信機器用部品。
[8]
前記成形品を複数有し、前記複数の成形品が嵌合している構造を有する、[1]~[76]のいずれかに記載の通信機器用部品。
[9]
銅インクを塗布して回路形成可能である、[1]~[8]のいずれかに記載の通信機器用部品。
[10]
さらに金属回路、金属配線、及び金属基盤からなる群から選ばれる1つ以上を有する、[1]~[9]のいずれかに記載の通信機器用部品。
[11]
高周波数アンテナ用部品である、[1]~[10]のいずれかに記載の通信機器用部品。
ここで、(A)マトリクス樹脂100質量部に対する、前記(A-a)成分と前記(A-b)成分との合計含有量が75質量部以上である。また、(B)成分の平均L/Dが1.2以上6.0以下であり、L/Dが7.0を超える二酸化チタンの含有率が10%未満である。
上記(A)マトリクス樹脂とは、無機充填剤等を除いた樹脂成分のことを指す。かかる樹脂成分としては、例えば、成形用として利用される種々の樹脂、例えば、ポリフェニレンエーテル系樹脂、ポリエステル系樹脂、ポリアミド系樹脂、ポリカーボネート系樹脂、ビニル系樹脂、オレフィン系樹脂、アクリル系樹脂、ポリフェニレンサルファイド、芳香族系樹脂等が挙げられる。
水素添加前のブロック共重合体の構造としては、特に限定されず、例えば、ポリスチレンブロック鎖をS、共役ジエン化合物重合体ブロック鎖をBと表すと、S-B-S、SB-S-B、(S-B-)4-S、S-B-S-B-S等の構造が挙げられる。
更には、添加剤として用いられる有機化合物、例えば、無水マレイン酸や、フェノール系安定剤等も樹脂成分として(A)マトリクス樹脂に含むことができる。
上記(A-a)ポリフェニレンエーテル系樹脂(以下、単に「(A-a)成分」と称する場合がある)の具体的な例としては、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、さらに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(例えば、特公昭52-17880号公報に記載されてあるような2,3,6-トリメチルフェノールとの共重合体や2-メチル-6-ブチルフェノールとの共重合体)のごときポリフェニレンエーテル共重合体も挙げられる。
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。
上記(A-a)成分は、1種単独で用いてもよいし、2種以上を組み合わせて用いてもよい。
本実施形態では、(A-b)芳香族ビニル単量体単位を主体とするブロックを少なくとも1つと、共役ジエン単量体単位を主体とするブロックを少なくとも1つとを含む、ブロック共重合体、及び/又は該ブロック共重合体の水素添加物(以下、単に「(A-b)成分」と称する場合がある)をさらに含んでいてもよく、含んでいることが好ましい。上記(A-b)芳香族ビニル単量体単位を主体とするブロックを少なくとも1つと、共役ジエン単量体単位を主体とするブロックを少なくとも1つとを含む、ブロック共重合体、及び/又は該ブロック共重合体の水素添加物とは、芳香族ビニル単量体単位を主体とする少なくとも1つの芳香族ビニル重合体ブロックと共役ジエン単量体単位を主体とする少なくとも1つの共役ジエン重合体ブロックとを含む非水素化ブロック共重合体及び/又は該ブロック共重合体の水素添加物をいう。
なお、全ビニル結合量は、赤外分光光度計を用いて測定することができる。
なお、測定条件は下記のとおりとしてよい[溶媒:クロロホルム、温度:40℃、カラム:サンプル側(K-G,K-800RL,K-800R)、リファレンス側(K-805L×2本)、流量10mL/分、測定波長:254nm、圧力15~17kg/cm2)]。
また、数平均分子量の測定の際、重合時の触媒失活による低分子量成分が検出されることがあるが、その場合は分子量計算に低分子量成分は含めない。当該低分子量成分は、分子量3000以下の成分を指すものとする。通常、計算された正しい分子量分布(重量平均分子量/数平均分子量)は1.0~1.1の範囲内である。
ここでいう変性されたブロック共重合体とは、分子構造内に少なくとも1個の炭素-炭素二重結合又は三重結合、及び少なくとも1個のカルボン酸基、酸無水物基、アミノ基、水酸基又はグリシジル基を有する、少なくとも1種の変性化合物で変性されたブロック共重合体を指す。
該変性されたブロック共重合体の製法としては、ラジカル開始剤の存在下又は不存在下で、(1)ブロック共重合体の軟化点温度以上、250℃以下の温度範囲で変性化合物と溶融混練し反応させる方法、(2)ブロック共重合体の軟化点以下の温度で、ブロック共重合体と変性化合物を溶液中で反応させる方法、(3)ブロック共重合体の軟化点以下の温度で、ブロック共重合体と変性化合物を溶融させることなく反応させる方法等が挙げられ、これらいずれの方法でも構わないが、(1)の方法が好ましく、さらには(1)の中でもラジカル開始剤存在下で行う方法が最も好ましい。
ここでいう「分子構造内に少なくとも1個の炭素-炭素二重結合又は三重結合、及び少なくとも1個のカルボン酸基、酸無水物基、アミノ基、水酸基又はグリシジル基を有する少なくとも1種の変性化合物」としては、変性されたポリフェニレンエーテルで述べた変性化合物と同じものが使用できる。
本実施形態の(A)マトリクス樹脂は、ポリスチレン系樹脂を含んでもよい。ポリスチレン系樹脂としては、アタクチックポリスチレン、ゴム補強されたポリスチレン(ハイインパクトポリスチレン、HIPS)、スチレン含有量が50重量%以上のスチレン-アクリロニトリル共重合体(SAN)、及び該スチレン-アクリロニトリル共重合体がゴム補強されたABS樹脂等が挙げられ、アタクチックポリスチレン及び/又はハイインパクトポリスチレンが好ましい。
上記ポリスチレン系樹脂は、1種単独で用いてもよいし、2種以上を組み合わせて用いてもよい。
本実施形態の(A)マトリクス樹脂における、その他の樹脂成分の例としては、ポリエステル、ポリプロピレン等のポリオレフィン、ポリアミド、ポリフェニレンサルファイド等である。
また、その他の樹脂成分全体の好ましい添加量としては、樹脂組成物全体を100質量%としたときに、30質量%以下であることが好ましく、25質量%以下であることがより好ましく、20質量%以下であることがさらに好ましい。
本実施形態の樹脂組成物は、特定形状を有する二酸化チタンを含有することにより、優れた誘電特性を有する。
一般的に樹脂、塗料の顔料として用いられる二酸化チタンは、その結晶形態によりルチル型とアナターゼ型の二種類に分けられ、どちらも使用可能であるが、誘電特性の観点からルチル型であることが好ましい。
樹脂組成物中の(B)二酸化チタンの平均L/Dが1.2以上であると、少量の二酸化チタンの添加で誘電率を高くできる傾向にあり、成形加工性が良好となる傾向にある。更には、樹脂組成物中の(B)二酸化チタンの平均L/Dが6.0以下であると、誘電正接を低く保ったまま誘電率を高くできる傾向にある。
なお、本明細書において、樹脂組成物中の二酸化チタンの平均L/Dは、以下の手法で求めることができる。たとえば、樹脂組成物を恒温昇温電気炉等で灰化し、樹脂成分のみを燃焼させた後、残った二酸化チタンを走査型電子顕微鏡で観察し、100個の二酸化チタンの最長径と最短径を測定し、平均L/Dを求める方法が挙げられる。具体的には、実施例に開示した方法で測定することができる。
誘電正接を低く保つ観点から、L/Dが過剰に大きい二酸化チタンの含有率を低く調整することが好ましく、そのことで、アンテナとしての性能を優れたものとすることができる。具体的には、L/Dが7.0を超える二酸化チタンの含有率が、上記樹脂組成物中に含まれる二酸化チタンの総数(100%)に対して、10%未満であることが好ましい。L/Dが7.0を超える二酸化チタンの好ましい含有率としては、8%未満であり、より好ましくは5%未満である。
二酸化チタンの平均L/Dは原料となる繊維状二酸化チタンのL/Dの調整、繊維状二酸化チタンと粒子状二酸化チタンとの併用によって調整可能である。また、混練条件によっても調整可能であり、2軸混練機への原料投入場所の変更や、混練機のスクリューパターンの変更で調整することが可能である。具体的には、二酸化チタンに混練時のシェアがかかる条件、例えば原料投入場所を上流側とすることや、スクリューパターンをより強練りとなるようなパターンとすることで、二酸化チタンの平均L/Dを小さくすることができる。
原料二酸化チタンの平均繊維径が0.2μm以上であると、常用の単軸又は2軸混練機において、添加ホッパー内でラットホールが発生したり、同伴した空気や窒素が押出機原料投入口で逆流したりすることを防止することで安定的に添加でき、溶融混練により均一な樹脂組成物とすることが容易となり、吐出量を低下させず生産性が向上する傾向にある。さらに比表面積が小さくなる為、樹脂材料の劣化を防止できる傾向にある。
また、原料二酸化チタンの平均繊維径が0.8μm以下であると、ブロッキングを防止でき、原料二酸化チタンを安定に供給可能となり、溶融混練により均一な樹脂組成物としやすくなる傾向にある。また常用の単軸又は2軸混練機において、吐出量を低下させず生産性が向上する傾向にある。
であってもよく、80質量部以下であることが好ましく、より好ましくは70質量部以下、さらに好ましくは60質量部以下である。
また、上記(A)成分100質量部に対する上記(B)成分の質量割合としては、誘電率コントロール、成形性の観点から、20質量部以上250質量部以下であることが好ましく、より好ましくは20質量部以上230質量部以下、さらに好ましくは25質量部以上200質量部以下、特に好ましくは30質量部以上200質量部以下である。
本実施形態において、樹脂組成物の着色方法には特に制限はなく、公知の有機系染顔料、及び無機顔料から選ばれる1種以上の着色剤を使用することができる。
このうち、カーボンブラックとしては、ジブチルフタレート(DBP)吸収量が250mL/100g未満、好ましくは150mL/100g未満、且つ窒素吸着比表面積900m2/g未満、さらに好ましくは400m2/g未満であることが好ましい。これらがこの範囲にあると、着色性、機械的強度、難燃性に特に優れた組成物を得ることができる。
ここでいうDBP吸収量、及び窒素吸着比表面積とは、それぞれASTM D2414、JIS K6217に定められた方法で測定した値をいう。
アジン系染料としては、例えばカラーインデックスにおけるソルベントブラック5(C.I.50415、CAS No.11099-03-9)、ソルベントブラック7(C.I.50415:1、CAS No.8005-20-5/101357-15-7)、アシッドブラック2(C.I.50420、CAS No.8005-03-6/68510-98-5)が挙げられる。
上記添加量で添加することで、耐衝撃性や機械特性のバランスを良好に保つことができる。また、難燃性が必要な用途の場合は、難燃性の観点より、上記添加量が好ましい。
本実施形態では、上記した成分のほかに、本実施形態の効果を損なわない範囲で必要に応じて無機充填剤を任意の段階で添加することができる。
また、無機充填剤全体の好ましい添加量としては、樹脂組成物全体を100質量%としたときに、30質量%以下であることが好ましく、25質量%以下であることがより好ましく、20質量%以下であることがさらに好ましい。
本実施形態の樹脂組成物は、上述の成分以外に、その他の添加剤成分として、可塑剤(低分子量ポリオレフィン、ポリエチレングリコール、脂肪酸エステル類等)、帯電防止剤、核剤、流動性改良剤、補強剤、各種過酸化物、展着剤、銅系熱安定剤、ヒンダードフェノール系酸化劣化防止剤に代表される有機系熱安定剤、酸化防止剤、紫外線吸収剤、光安定剤、エチレンビスステアリン酸アミド等の滑剤、無水マレイン酸等の変性材等を含むことができる。
また、その他の成分全体の好ましい添加量としては、樹脂組成物全体を100質量%としたときに、30質量%以下であることが好ましく、25質量%以下であることがより好ましく、20質量%以下であることがさらに好ましい。
なお、荷重撓み温度(DTUL)は、後述の実施例に記載の方法で測定される値をいう。
高周波用のアンテナ部品は発熱が大きくなり、周波数が大きくなればなるほど発熱が大きくなり高い耐熱性を持つ樹脂が求められる。特に1GHz以上の周波数のアンテナ部品では100℃以上のDTULを持つ樹脂組成物であることが好ましく、耐熱性は高いほど好ましい。3GHz以上の周波数のアンテナ部品では110℃以上のDTULを持つ樹脂組成物が好ましく、4GHz以上の周波数のアンテナ部品になると120℃以上のDTULを持つ樹脂組成物が好ましい。
なお、誘電正接は、後述の実施例に記載の方法で測定される値をいう。
本実施形態の樹脂組成物においては、低誘電正接を維持しながら誘電率コントロールを行いやすくする観点から、測定周波数1GHzにおける誘電正接に対する誘電率の比(誘電率/誘電正接)が1500以上であることが好ましく、2000以上であることがより好ましく、2250以上であることがさらに好ましい。上記誘電率/誘電正接の上限は特に限定されないが、10000であることができ、8000であることができ、5000であることができ、4000であることができる。
ここで、「無機物質」とは、樹脂組成物に含まれるすべての無機物質を指し、(B)二酸化チタンも含むものとする。二酸化チタン以外の無機物質としては、上述の無機充填剤、(A-a)ポリフェニレンエーテル系樹脂中の金属系安定剤、無機顔料等が挙げられるが、これらに限定されるものではない。また、「無機物質の質量割合」とは、樹脂組成物中に含まれる全ての無機物質の合計質量の割合をいう。
本実施形態においては、(A)マトリクス樹脂100質量部に対する、(A-a)ポリフェニレンエーテル系樹脂と、(A-b)芳香族ビニル単量体単位を主体とするブロックを少なくとも1つと共役ジエン単量体単位を主体とするブロックを少なくとも1つとを含むブロック共重合体及び/又は該ブロック共重合体の水素添加物と、の合計含有量が75質量部以上であるというマトリクス樹脂成分の組成限定により、樹脂成分の誘電率がほぼ一定であり、無機物質の質量割合xと誘電率との間には、2次関数の関係が成り立つことが実験により確認されているため、上記関係は質量割合xあたりの誘電率向上効果を表すものである。無機物質に対する、二酸化チタンの含有率を高めることで、上記関係を満たすことができる傾向にあり、二酸化チタンの平均L/Dを大きくすることで、上記関係を満たすことができる傾向にある。当該観点から、無機物質100質量%に対する、二酸化チタンの含有率が50質量%以上であることが好ましく、60質量%以上であることがより好ましく、70質量%以上であることがさらに好ましく、100質量%であってもよい。また、上述の通り、二酸化チタンの平均L/Dは、1.2以上であり、1.3以上であることが好ましく、1.5以上であることがより好ましく、2.0以上であることがさらに好ましい。ただし、上述した通り、L/Dの大きすぎる二酸化チタンを使用すると誘電正接が上がる傾向にあるため、二酸化チタンの平均L/Dは、6.0以下であることが好ましい。
成形品から樹脂組成物中の無機物質の質量割合xを測定する方法としては、成形体を電気炉に入れて、含まれる有機物を焼却処理し、得られた残渣分から無機物質の質量を測定し、xを計算することが挙げられる。
本実施形態の樹脂組成物は、(A)成分を構成する各成分、原料二酸化チタン、さらに必要に応じて着色剤、無機充填剤、その他の成分を溶融混練することにより製造することができる。
2.本実施形態の樹脂組成物に含まれる(A)成分を構成する各成分の全量及び原料二酸化チタンの一部を溶融混練し(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、原料二酸化チタンの残量を供給し、続けて溶融混練を行う(第二混練工程)、製造方法。
3.本実施形態の樹脂組成物に含まれる各成分の全量を溶融混練する方法。
特に、(A)成分に含まれる、(A-a)ポリフェニレンエーテル系樹脂等の一部の熱可塑性樹脂、原料二酸化チタンは粉体状であり、押出機への噛み込み性が悪く、時間当たりの生産量を増やすことが難しい。さらに樹脂の押出機中の滞留時間が長くなることから熱劣化が起きやすい。以上から、上記1、2の製造方法で得られる樹脂組成物は、3の製造方法で得られる樹脂組成物と比較して、二酸化チタンの噛み込み性が改善され、各成分の混合性に優れ、熱劣化による分解、架橋物や炭化物の発生を低減化させることができ、且つ樹脂の時間当たりの生産量を上げることができ、生産性、品質が優れた樹脂組成物が得られるため、より好ましい。
本実施形態の成形品は、上述の樹脂組成物よりなる。本実施形態の成形品の製造方法は特に限定されないが、例えば射出成形により製造することができる。
また、このような方法で製造された成形品の表面に、塗料、金属や他種のポリマー等からなる被覆層を形成した形態で使用することもできる。
本実施形態の通信機器用部品は、金属インクの塗布やメッキをして使用されることがある。
本実施形態の通信機器用部品は、金属回路、金属配線、金属基盤からなる群から選ばれる1つ以上を有していてよい。
当該観点から、本実施形態の成形品として、金属インク塗布可能である成形品が好ましく用いられる。金属インクについては、金、銀、銅を問わず使用することができる。更には、複数の金属を含むインクを使用することもできる。
メッキについても同様で、いかなる金属においても使用することができる。
本実施形態では、銅害防止性が高く、上記金属インクの塗布やメッキ後の割れを低減することができる。
使用する導電性金属ペーストは、有機溶剤を含む熱硬化性樹脂組成物中に、微細な平均粒子径の金属超微粒子を均一に分散してなる導電性金属ペーストであり、この微細な平均粒子径の金属超微粒子は、その平均粒子径が1~100nmの範囲に選択され、金属超微粒子表面は、かかる金属超微粒子に含まれる金属元素と配位的な結合が可能な基として、窒素、酸素、イオウ原子を含む基を有する化合物1種以上により被覆されているものが好適に使用できる。
上記導電性金属ペーストに含有される、微細な平均粒子径の金属超微粒子には、金、銀、銅、白金、パラジウム、タングステン、ニッケル、タンタル、ビスマス、鉛、インジウム、錫、亜鉛、チタン、アルミニウムからなる群より選択される、一種類の金属からなる微粒子、または、2種類以上の金属からなる合金の微粒子が好適に使用できる。
回路パターンの形成方法は上記導電性金属ペーストを微小な液滴として、基板上に噴射・塗布して、前記導電性金属ペーストの塗布膜からなる回路パターンを描画する工程と、描画された導電性金属ペーストの塗布膜を、少なくとも前記熱硬化性樹脂の熱硬化がなされる温度において、加熱処理する工程とを有する。
インクジェット方式による描画手段としては、加熱発泡により気泡を発生し、液滴の吐出を行うサーマル方式の描画手段や、ピエゾ素子を利用する圧縮により、液滴の吐出を行うピエゾ方式の描画手段がある。
本実施形態の通信機器用部品は特に高周波領域において、低誘電正接の材料が求められる用途に用いることができる。当該用途では、損失が大きくなると通信機器用部材としての性能が落ちてしまうため、誘電正接のコントロールが重要な技術となる。本実施形態であれば、低誘電正接を維持しながら誘電率をコントロール可能な通信機器用部品を提供可能である。
なお、実施例及び比較例に用いた原材料及び評価方法を以下に示す。
(A-a)ポリフェニレンエーテル(以下、PPE)
(A-a-1)2,6-キシレノールを酸化重合して得られたポリフェニレンエーテル樹脂
該ポリフェニレンエーテル樹脂の還元粘度(0.5g/dL、クロロホルム溶液、30℃測定)は、0.52dL/gであった。
(A-a-2)2,6-キシレノールを酸化重合して得られたポリフェニレンエーテル樹脂
該ポリフェニレンエーテル樹脂の還元粘度(0.5g/dL、クロロホルム溶液、30℃測定)は、0.40dL/gであった。
(A-a-3)2,6-キシレノールを酸化重合して得られたポリフェニレンエーテル樹脂
該ポリフェニレンエーテル樹脂の還元粘度(0.5g/dL、クロロホルム溶液、30℃測定)は、0.32dL/gであった。
(B-1)繊維状二酸化チタン(石原産業株式会社製 商品名 タイペーク(商標) PFR404)、平均直径0.4μm、平均繊維長3μm、平均L/D7.5
(B-2)繊維状二酸化チタン(石原産業株式会社製 商品名 タイペーク(商標) FTL-300)、平均直径0.4μm、平均繊維長5μm、平均L/D12.5
(B-3)繊維状二酸化チタン(石原産業株式会社製 商品名 タイペーク(商標) FTL-400)、平均直径0.5μm、平均繊維長10μm、平均L/D20
(B-4)粒子状二酸化チタン(VENATOR社製 商品名 Tioxide(商標) RTC-30)、平均粒子径0.2μm、二酸化チタン含量94質量%。
水添ブロック共重合体(旭化成株式会社製タフテック(商標)H1051)
(A-c-1)ハイインパクトポリスチレン(PSジャパン株式会社製H9405)
(A-c-2)ハイインパクトポリスチレン(ペトロケミカルズ(株)製、商品名「CT-60」)
(A-d)ポリアミド6,6(以下、PA66)
アジピン酸とヘキサメチレンジアミンの等モル塩2400gとアジピン酸100g、及び純水2.5リットルを5リットルのオートクレーブの中に仕込み、良く撹拌した。オートクレーブ内の雰囲気を充分窒素で置換した後、撹拌しながら室温から220℃まで約1時間かけて昇温した。この際、オートクレーブ内のゲージ圧は、水蒸気による自然圧で1.76MPaとなった。続いて、1.76MPa以上の圧にならないよう水を反応系外に除去しながら加熱を続けた。さらに2時間後内温が260℃に到達したら、加熱は続けながら、オートクレーブのバルブの開閉により約40分かけて、内圧が0.2MPaになるまで降圧した。その後、約8時間かけて室温まで冷却した。冷却後オートクレーブを開け、約2kgのポリマーを取りだし、粉砕した。
得られたポリアミドはMw=38700、Mw/Mn=2.1であった。なお、Mw、Mnは、GPC(移動層:ヘキサフルオロイソプロパノール、標準物質:PMMA(ポリメチルメタクリレート))を用いて求めた。
また、特開平7-228689号公報の実施例に記載されている末端アミノ基濃度の測定方法に従い測定した結果、末端アミノ基濃度は38μmol/gであった。
(A-e)MFR=2g/10分のポリプロピレン単独重合体
(C)エチレンビスステアリン酸アミド:花王社製「カオーワックスEB-G」
(D)無水マレイン酸(日本油脂(株)製、「クリスタルMAN」)
(E)炭酸カルシウム(竹原化学工業株式会社製 SL-2200)
実施例及び比較例で行った各評価試験は、以下のようにして行った。
得られた樹脂組成物のペレットを、シリンダー温度250~350℃に設定した小型射出成形機(商品名:EC75-SXII、東芝機械社製)に供給し、金型温度70~130℃、射出圧力200MPa、射出時間20秒、冷却時間15秒の条件で80mm×40mm×1.5mmの平板を作製した。また、平板を切削し、下記条件で測定した。
測定装置:vector network analyzer HP8510C(アジレント・テクノロジー)
synthesized sweeper HP83651A(同上)
test set HP8517B(同上)
試験片寸法:2mm×4mm×40mm
共振器の形状:内径229mm、高さ40mmの円筒
測定方向:1方向
測定周波数:1GHz付近(TM010モード)
前処理:C-90h/22±1℃/60±5%RH
試験環境:22℃/56%RH
誘電正接は低ければ低いほど性能が良いと判断した。
得られた樹脂組成物のペレットを、シリンダー温度250~350℃に設定した小型射出成形機(商品名:EC75-SXII、東芝機械社製)に供給し、金型温度70~130℃、射出圧力200MPa、射出時間20秒、冷却時間15秒の条件で評価用ISOダンベルを作製した。また、該ISOダンベルを切削し、荷重撓み温度(DTUL)測定用テストピースを作製した。上記荷重撓み温度測定用テストピースを用いて、荷重撓み温度:DTUL(ISO 75:1.80MPa荷重)の測定を行った。
値が大きいほど、耐熱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250~350℃に設定した小型射出成形機(商品名:EC75-SXII、東芝機械社製)に供給し、金型温度70~130℃、射出圧力200MPa、射出時間20秒、冷却時間15秒の条件で90mm×50mm×2.5mmの平板を作製した。また、該平板に対し、酸化銅インクを塗布し、レーザーで密着可能か判断した。密着した場合に〇、密着できなかった場合に×と表記し、密着できるものほど通信機器用部品として優れていると判断した。
得られた樹脂組成物のペレットを、シリンダー温度250~350℃に設定した小型射出成形機(商品名:EC75-SXII、東芝機械社製)に供給し、金型温度70~130℃、射出圧力250MPa、射出時間20秒、冷却時間15秒の条件で150mm×150mm×2.0mmの平板を作製した。該平板にめっき処理を施した銅箔を接着してアンテナ電極を形成し、同一のアンテナ装置を実装し、電波暗室内で測定用アンテナから3m離し、50Ωの同軸ケーブルを介してネットワークアナライザーを用いたアンテナ利得評価装置に接続し、アンテナ特性を評価した。特定の指向性パターンが得られた場合にアンテナ性能に優れるとして〇、特定の指向性パターンが得られなかった場合にアンテナ性能に優れないとして×を記載した。
得られた樹脂組成物のペレットを、シリンダー温度250~350℃に設定した小型射出成形機(商品名:EC75-SXII、東芝機械社製)に供給し、金型温度70~130℃、射出圧力200MPa、射出時間20秒、冷却時間15秒の条件で90mm×50mm×2.5mmの平板を作製した。また、該平板に対し、銅箔フイルムを上下に挟み、熱プレスにて260℃で接着した。銅箔フイルムは三井金属鉱山製TQ-M7-VSPを用いた。接着した銅箔接着平板の銅箔ピール強度を引張試験機で測定した。荷重たわみ温度120℃以下のサンプルは加工温度に耐えられないため、測定不可とした。銅箔ピール強度は数値が高い程、回路形成に適した材料と評価した。
得られた樹脂組成物ペレットを10g秤量し、650℃の恒温昇温電気炉(SK-3050F-SP)内で2時間灰化し、樹脂成分のみを燃焼させた後、残った(B)成分等を走査型電子顕微鏡((株)日立ハイテクノロジーズ製 S-4800)を用いて5000倍に拡大して観察し、視野の中から任意に500個の二酸化チタンの最長径と最短径を測定した。得られた最長径の相加平均と最短径の相加平均から平均L/Dを求めた。
また、同じ500個の二酸化チタンの最長径と最短径の測定結果から、各粒子のL/Dを算出し、L/Dが7.0を超える二酸化チタンの含有率が10%未満であるものは○、10%以上であるものは×として評価した。
(A)マトリクス樹脂、(B)二酸化チタン、及びその他の成分を表1に示した組成で配合し、二軸押出機ZSK-40(COPERION WERNER&PFLEIDERER社製、ドイツ国)を用いて樹脂組成物の製造を行った。この二軸押出機において、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、その下流に第2原料供給口、さらにその下流に第2真空ベントを設けた。
上記のように設定した押出機を用い、表1及び2に示す組成及び添加方法で各成分を添加し、押出温度250~320℃、スクリュー回転数300rpm、吐出量100kg/時間の条件にて溶融混練し、ペレットを製造した。
得られた樹脂組成物ペレットを用いて、上述の各評価を行った。評価結果を表1に示す。
Claims (11)
- 樹脂組成物からなる成形品を有する通信機器用部品であって、
前記樹脂組成物は、(A)マトリクス樹脂、(B)二酸化チタンを含み、
前記(A)マトリクス樹脂は、(A-a)ポリフェニレンエーテル系樹脂を含み、
前記(A)マトリクス樹脂100質量部に対する、前記(A-a)ポリフェニレンエーテル系樹脂と、(A-b)芳香族ビニル単量体単位を主体とするブロックを少なくとも1つと共役ジエン単量体単位を主体とするブロックを少なくとも1つとを含むブロック共重合体及び/又は該ブロック共重合体の水素添加物と、の合計含有量が75質量部以上であり、
前記(B)二酸化チタンの平均L/Dが1.2以上6.0以下であり、L/Dが7.0を超える二酸化チタンの含有率が10%未満である、
ことを特徴とする、通信機器用部品。 - 前記樹脂組成物が、(A-b)芳香族ビニル単量体単位を主体とするブロックを少なくとも1つと共役ジエン単量体単位を主体とするブロックを少なくとも1つとを含むブロック共重合体及び/又は該ブロック共重合体の水素添加物を含む、請求項1に記載の通信機器用部品。
- 前記樹脂組成物が、(A-c)ポリスチレン系樹脂をさらに含む、請求項1又は2に記載の通信機器用部品。
- 前記樹脂組成物100質量部に対し、前記(B)二酸化チタンを10質量部以上90質量部以下含む、請求項1~3のいずれか一項に記載の通信機器用部品。
- 前記(A)マトリクス樹脂100質量部に対し、前記(A-a)ポリフェニレンエーテル系樹脂を50質量部以上含む、請求項1~4のいずれか一項に記載の通信機器用部品。
- 前記(A)マトリクス樹脂100質量部に対し、ポリアミド及びポリフェニレンサルファイドを合計で10質量部以下含む、請求項1~5のいずれか一項に記載の通信機器用部品。
- 前記樹脂組成物100質量%に対する無機物質の質量割合x(質量%)と、前記樹脂組成物の測定周波数1GHzにおける誘電率yとが、y>0.0006x2+0.021x+2.52の関係を満たす、請求項1~6のいずれか一項に記載の通信機器用部品。
- 前記成形品を複数有し、前記複数の成形品が嵌合している構造を有する、請求項1~7のいずれか一項に記載の通信機器用部品。
- 銅インクを塗布して回路形成可能である、請求項1~8のいずれか一項に記載の通信機器用部品。
- さらに金属回路、金属配線、及び金属基盤からなる群から選ばれる1つ以上を有する、請求項1~9のいずれか一項に記載の通信機器用部品。
- 高周波数アンテナ用部品である、請求項1~10のいずれか一項に記載の通信機器用部品。
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JP2022563581A JP7253122B2 (ja) | 2020-11-17 | 2021-08-25 | 通信機器用部品 |
MX2023005735A MX2023005735A (es) | 2020-11-17 | 2021-08-25 | Componente para aparato de telecomunicacion. |
KR1020237008973A KR102556321B1 (ko) | 2020-11-17 | 2021-08-25 | 통신 기기용 부품 |
EP21894284.5A EP4249557A4 (en) | 2020-11-17 | 2021-08-25 | COMPONENT FOR COMMUNICATION DEVICES |
US18/252,532 US11866568B2 (en) | 2020-11-17 | 2021-08-25 | Component for telecommunication apparatus |
CN202180072617.2A CN116348548A (zh) | 2020-11-17 | 2021-08-25 | 通信设备用部件 |
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EP (1) | EP4249557A4 (ja) |
JP (1) | JP7253122B2 (ja) |
KR (1) | KR102556321B1 (ja) |
CN (1) | CN116348548A (ja) |
MX (1) | MX2023005735A (ja) |
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WO (1) | WO2022107409A1 (ja) |
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- 2021-08-25 WO PCT/JP2021/031202 patent/WO2022107409A1/ja active Application Filing
- 2021-08-25 EP EP21894284.5A patent/EP4249557A4/en active Pending
- 2021-08-25 MX MX2023005735A patent/MX2023005735A/es unknown
- 2021-08-25 US US18/252,532 patent/US11866568B2/en active Active
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KR102556321B1 (ko) | 2023-07-18 |
US11866568B2 (en) | 2024-01-09 |
TW202221079A (zh) | 2022-06-01 |
EP4249557A4 (en) | 2024-04-10 |
TWI797731B (zh) | 2023-04-01 |
JPWO2022107409A1 (ja) | 2022-05-27 |
EP4249557A1 (en) | 2023-09-27 |
MX2023005735A (es) | 2023-05-25 |
US20230391982A1 (en) | 2023-12-07 |
JP7253122B2 (ja) | 2023-04-05 |
KR20230042534A (ko) | 2023-03-28 |
CN116348548A (zh) | 2023-06-27 |
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