WO2011089948A1 - 高誘電性フィルム - Google Patents
高誘電性フィルム Download PDFInfo
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- WO2011089948A1 WO2011089948A1 PCT/JP2011/050259 JP2011050259W WO2011089948A1 WO 2011089948 A1 WO2011089948 A1 WO 2011089948A1 JP 2011050259 W JP2011050259 W JP 2011050259W WO 2011089948 A1 WO2011089948 A1 WO 2011089948A1
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- Prior art keywords
- film
- group
- particles
- resin
- high dielectric
- Prior art date
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- 239000002245 particle Substances 0.000 claims abstract description 87
- 239000011347 resin Substances 0.000 claims abstract description 82
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- 239000002184 metal Substances 0.000 claims abstract description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011246 composite particle Substances 0.000 claims abstract description 11
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 11
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- 239000003990 capacitor Substances 0.000 claims description 17
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 10
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- 239000004925 Acrylic resin Substances 0.000 claims description 3
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- -1 vinylidene fluorine Chemical compound 0.000 abstract description 7
- 229910010272 inorganic material Inorganic materials 0.000 abstract description 2
- 150000002484 inorganic compounds Chemical class 0.000 abstract 1
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- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 16
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
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- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
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- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 3
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- MIZLGWKEZAPEFJ-UHFFFAOYSA-N 1,1,2-trifluoroethene Chemical group FC=C(F)F MIZLGWKEZAPEFJ-UHFFFAOYSA-N 0.000 description 2
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- CJWNFAKWHDOUKL-UHFFFAOYSA-N 2-(2-phenylpropan-2-yl)phenol Chemical compound C=1C=CC=C(O)C=1C(C)(C)C1=CC=CC=C1 CJWNFAKWHDOUKL-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 description 1
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- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
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- 229920002284 Cellulose triacetate Polymers 0.000 description 1
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- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
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- HSHXDCVZWHOWCS-UHFFFAOYSA-N N'-hexadecylthiophene-2-carbohydrazide Chemical compound CCCCCCCCCCCCCCCCNNC(=O)c1cccs1 HSHXDCVZWHOWCS-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 description 1
- 229920007962 Styrene Methyl Methacrylate Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
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- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
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- 235000019325 ethyl cellulose Nutrition 0.000 description 1
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- 229940116333 ethyl lactate Drugs 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
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- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
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- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 238000007759 kiss coating Methods 0.000 description 1
- ADFPJHOAARPYLP-UHFFFAOYSA-N methyl 2-methylprop-2-enoate;styrene Chemical compound COC(=O)C(C)=C.C=CC1=CC=CC=C1 ADFPJHOAARPYLP-UHFFFAOYSA-N 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000003495 polar organic solvent Substances 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
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- 238000007789 sealing Methods 0.000 description 1
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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- 239000001587 sorbitan monostearate Substances 0.000 description 1
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- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
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- 230000008685 targeting Effects 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
- H01B3/445—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—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 a halogen; Compositions of derivatives of such polymers
- C08L27/02—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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/16—Homopolymers or copolymers or vinylidene fluoride
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/14—Organic dielectrics
- H01G4/18—Organic dielectrics of synthetic material, e.g. derivatives of cellulose
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/20—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06
- H01G4/206—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 inorganic and synthetic material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use 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 a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use 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 a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use 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 a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/16—Homopolymers or copolymers of vinylidene fluoride
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
- H01G4/1209—Ceramic dielectrics characterised by the ceramic dielectric material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
- H01G4/1209—Ceramic dielectrics characterised by the ceramic dielectric material
- H01G4/1254—Ceramic dielectrics characterised by the ceramic dielectric material based on niobium or tungsteen, tantalum oxides or niobates, tantalates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/14—Organic dielectrics
- H01G4/18—Organic dielectrics of synthetic material, e.g. derivatives of cellulose
- H01G4/186—Organic dielectrics of synthetic material, e.g. derivatives of cellulose halogenated
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/20—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06
Definitions
- the present invention relates to a high dielectric film suitable for a film capacitor having an improved volume resistivity.
- VdF vinylidene fluoride
- An object of the present invention is to provide a high dielectric film having an improved volume resistivity while maintaining a high relative dielectric constant of a VdF resin.
- the present invention relates to a film comprising a film-forming resin (A) and inorganic oxide particles (B), wherein the film-forming resin (A) comprises a vinylidene fluoride (VdF) resin (a1) and an inorganic oxide
- the content of the particles (B) is 0.01 parts by mass or more and less than 10 parts by mass with respect to 100 parts by mass of the film-forming resin (A), and Inorganic oxide particles (B) (B1) Inorganic oxide particles of one metal element of Group 2, Group 3, Group 4, Group 12 or Group 13 of the periodic table, or these inorganic oxide composite particles, (B2) Formula (1): M 1 a1 N b1 O c1 (Wherein M 1 is a Group 2 metal element; N is a Group 4 metal element; a1 is 0.9 to 1.1; b1 is 0.9 to 1.1; c1 is 2.8 to 3.2.
- M 1 and group 2 of the N-inorganic composite oxide particles and are represented by each may be plural) (B3) of the periodic table, group 3, group 4, group 12 or group 13 oxide of the metal element
- the present invention relates to a high dielectric film which is at least one selected from the group consisting of inorganic oxide composite particles of silicon oxide and silicon oxide.
- the inorganic oxide particles (B) used preferably have a primary average particle size of 1 ⁇ m or less.
- the content of the inorganic oxide particles (B) is 0.1 to 5 parts by mass, which is a smaller amount with respect to 100 parts by mass of the film-forming resin (A), a sufficient effect of improving the volume resistivity is exhibited.
- the film-forming resin (A) may contain a non-fluorine resin (a2) in addition to the VdF resin (a1).
- the high dielectric film of the present invention is particularly useful for a film capacitor. Therefore, the present invention also relates to a film capacitor in which an electrode layer is laminated on at least one surface of the high dielectric film of the present invention.
- the volume resistivity can be significantly increased while maintaining the high relative dielectric constant of the VdF resin.
- the high dielectric film of the present invention is a film containing a film-forming resin (A) and specific inorganic oxide particles (B), and the film-forming resin (A) is a vinylidene fluoride (VdF) resin (a1). And the content of the inorganic oxide particles (B) is 0.01 parts by mass or more and less than 10 parts by mass with respect to 100 parts by mass of the film-forming resin (A).
- the film-forming resin (A) contains a VdF-based resin (a1).
- VdF-based resin As the VdF-based resin, those having a relative dielectric constant (1 kHz, 25 ° C.) of 4 or more are preferable from the viewpoint of improving the withstand voltage, insulation, and dielectric properties when formed into a film.
- the VdF resin (a1) may be a homopolymer of vinylidene fluoride (VdF) (PVdF) or a copolymer with one or more of other monomers copolymerizable with VdF. Also good. Also, it may be a blend of a VdF homopolymer and a VdF copolymer, or a blend of two or more VdF copolymers.
- VdF examples include tetrafluoroethylene (TFE), chlorotrifluoroethylene (CTFE), trifluoroethylene (TrFE), monofluoroethylene, hexafluoropropylene (HFP), Fluorinated olefins such as fluoro (alkyl vinyl ether) (PAVE); fluorinated acrylates, functional group-containing fluorinated monomers, and the like.
- TFE tetrafluoroethylene
- CTFE chlorotrifluoroethylene
- TrFE trifluoroethylene
- HFP hexafluoropropylene
- Fluorinated olefins such as fluoro (alkyl vinyl ether) (PAVE); fluorinated acrylates, functional group-containing fluorinated monomers, and the like.
- TFE, CTFE, and HFP are preferred from the viewpoint of good solvent solubility.
- VdF is 50 mol% or more, preferably 60 mol% or more from the viewpoint of
- a polymer containing 60 to 100 mol% of VdF units, 0 to 40 mol% of TFE units and 0 to 40 mol% of HFP units has a relative dielectric constant of 6 or more, and is preferable.
- VdF homopolymer PVdF
- VdF / TFE copolymer VdF / TFE / HFP copolymer
- VdF / HFP copolymer VdF / CTFE copolymer, etc.
- PVdF, VdF / TFE copolymers, and VdF / HFP copolymers are preferred from the viewpoint of high relative dielectric constant and good solvent solubility.
- the composition ratio is such that the VdF unit is 50 to 95 mol% and the TFE unit is 5 to 50 mol%, particularly the VdF unit is 60 to 90 mol% and the TFE unit is A content of 10 to 40 mol% is preferable from the viewpoint of high electrical insulation among VdF resins. From another point of view, a range of 60 to 95 mol% of VdF units and 5 to 40 mol% of TFE units, particularly 70 to 90 mol% of VdF units and 10 to 30 mol% of TFE units can be employed.
- the relative dielectric constant (1 kHz, 25 ° C.) of the VdF resin itself is preferably 5 or more, preferably 6 or more, and more preferably 7.5 or more from the viewpoint of further improving the dielectric properties of the film.
- the upper limit is not particularly limited, but is usually 15 and preferably 13.
- the film-forming resin (A) may be used in combination with a non-fluorine resin (a2) in addition to the VdF resin (a1).
- non-fluorine resin (a2) used in combination a cellulose resin and / or an acrylic resin is preferable from the viewpoint of good compatibility with the VdF resin.
- the temperature dependency of the dielectric loss of the VdF resin (a1), particularly the temperature dependency at a high temperature is reduced.
- cellulose resins include ester-substituted celluloses such as cellulose monoacetate, cellulose diacetate, cellulose triacetate, cellulose acetate propionate, and cellulose acetate butyrate; celluloses substituted with ethers such as methylcellulose, ethylcellulose, and hydroxypropylmethylcellulose. Etc. can be exemplified. Among these, cellulose acetate propionate and cellulose acetate butyrate are preferable from the viewpoint of good compatibility with the VdF resin.
- acrylic resin examples include polymethyl methacrylate and styrene-methyl methacrylate copolymer. Among them, polymethyl methacrylate is preferable from the viewpoint of good compatibility with the VdF resin.
- the VdF resin (a1) and the non-fluorine resin (a2) are 80/20 to 99.9 / 0.1, more preferably 90/10 to 95/5.
- the inclusion by mass ratio is preferable from the viewpoint that the relative permittivity is large and the temperature dependence of dielectric loss at a frequency on the order of Hz is small.
- inorganic oxide particles (B) used in the present invention are at least one of the following inorganic oxide particles.
- Inorganic oxide particles of one metal element of Group 2, Group 3, Group 4, Group 12 or Group 13 of the periodic table, or these inorganic oxide composite particles examples include Be, Mg, Ca, Sr, Ba, Y, Ti, Zr, Zn, and Al.
- oxides of Al, Mg, Y, and Zn are versatile and inexpensive, and have a volume. This is preferable from the viewpoint of high resistivity.
- At least one kind of particles selected from the group consisting of Al 2 O 3 , MgO, ZrO 2 , Y 2 O 3 , BeO and MgO ⁇ Al 2 O 3 is preferable from the viewpoint of high volume resistivity.
- ⁇ -type Al 2 O 3 having a crystal structure is preferable because it has a large specific surface area and good dispersibility in a resin.
- M 1 a1 N b1 O c1 (Wherein M 1 is a Group 2 metal element; N is a Group 4 metal element; a1 is 0.9 to 1.1; b1 is 0.9 to 1.1; c1 is 2.8 to 3.2. And M 1 and N may each be a plurality of inorganic composite oxide particles: For example, Ti and Zr are preferable as the Group 4 metal element, and Mg, Ca, Sr, and Ba are preferable as the Group 2 metal element.
- At least one kind of particles selected from the group consisting of BaTiO 3 , SrTiO 3 , CaTiO 3 , MgTiO 3 , BaZrO 3 , SrZrO 3 , CaZrO 3 and MgZrO 3 is preferable from the viewpoint of high volume resistivity.
- (B3) Inorganic oxide composite particles of an oxide of a metal element of Group 2, Group 3, Group 4, Group 12, or Group 13 of the periodic table and silicon oxide: A composite particle of the inorganic oxide particles (B1) and silicon oxide, specifically, from 3Al 2 O 3 ⁇ 2SiO 2, 2MgO ⁇ SiO 2, ZrO 2 ⁇ SiO 2 and the group consisting of MgO ⁇ SiO 2 There may be mentioned at least one kind of particles selected.
- the primary average particle diameter of the inorganic oxide particles (B) is preferably small, and so-called nanoparticles of 1 ⁇ m or less are particularly preferable.
- a preferable primary average particle diameter is 300 nm or less, further 200 nm or less, and particularly 100 nm or less.
- a minimum is not specifically limited, It is preferable that it is 10 nm or more from the surface of the difficulty of manufacture, the difficulty of uniform dispersion
- inorganic oxide particles (B) are not intended to improve the dielectric properties, but are intended to improve the electrical insulation, and hence the volume resistivity, and therefore do not necessarily have to be highly dielectric. Therefore, the volume resistivity can be improved even if one kind of general-purpose and inexpensive metal oxide particles (B1), particularly Al 2 O 3 or MgO is used.
- the relative dielectric constant (1 kHz, 25 ° C.) of these one kind of metal oxide particles (B1) is less than 100, and further 10 or less.
- the inorganic oxide particles (B) ferroelectric (relative dielectric constant (1 kHz, 25 ° C.) of 100 or more) metal oxide particles (B2) that are conventionally blended to improve dielectric properties. ) To (B3) may be used.
- the blending amount is different from the conventional use form in that the blending amount is a small amount where the effect of improving the dielectric property cannot be expected so much.
- the preferred embodiment is different from the viewpoint of particle size in that a primary average particle size of 1 ⁇ m or less, which is difficult to uniformly disperse when added in a large amount, is used.
- Examples of the inorganic material constituting the ferroelectric metal oxide particles (B2) to (B3) include the following composite metal oxides, composites thereof, solid solutions, sol-gel bodies, etc., but are not limited thereto. It is not a thing.
- the content of the inorganic oxide particles (B) is 0.01 parts by mass or more and less than 10 parts by mass with respect to 100 parts by mass of the film-forming resin (A).
- the content exceeds 10 parts by mass, the electrical insulation (withstand voltage) tends to decrease, and it is easy to uniformly disperse the inorganic oxide particles (B) in the film-forming resin (A). May not be.
- a preferable upper limit is 8 parts by mass, and further 6 parts by mass.
- a preferable minimum is 0.1 mass part, Furthermore, 0.5 mass part, Especially 1 mass part.
- the reinforcing filler is a component added to impart mechanical properties (tensile strength, hardness, etc.), and is a particle or fiber other than the inorganic oxide particles (B), such as silicon carbide and silicon nitride. And boron compound particles or fibers.
- Silica silicon oxide
- Silica may be blended as a processing improver or a reinforcing filler. However, from the viewpoint of the effect of improving insulation, the thermal conductivity is low, and the volume resistivity is greatly reduced particularly at high temperatures. Inferior to the inorganic oxide particles (B).
- the affinity improver is a compound other than the film-forming resin (A), and examples thereof include functional group-modified polyolefin, styrene-modified polyolefin, functional group-modified polystyrene, polyacrylimide, cumylphenol, and the like. You may include in the range which does not impair the effect of invention. In addition, it is more preferable that these components are not included from the point of the insulation improvement effect.
- the high dielectric film of the present invention is coated with a coating composition containing, for example, a film-forming resin (A) and inorganic oxide particles (B), and if necessary, other components (C) and a solvent (D). It can be produced by forming a film and then peeling.
- a coating composition containing, for example, a film-forming resin (A) and inorganic oxide particles (B), and if necessary, other components (C) and a solvent (D). It can be produced by forming a film and then peeling.
- any solvent that dissolves the VdF resin (a1) and, if necessary, the non-fluorine resin (a2) can be used.
- the polar organic solvent for example, ketone solvents, ester solvents, carbonate solvents, cyclic ether solvents, and amide solvents are preferable.
- the total solid content concentration of the film-forming resin (A), inorganic oxide particles (B), and other optional components is adjusted to 5 to 30% by mass with the solvent (D).
- the coating composition can be prepared by dissolving or dispersing each of these components in a solvent.
- the inorganic oxide particles (B) it is important to uniformly disperse the inorganic oxide particles (B) in the film-forming resin (A).
- the blending amount of the inorganic oxide particles (B) is small, it is easy to disperse relatively uniformly.
- a surfactant may be added to the coating composition in addition to using the affinity improver.
- surfactants cationic, anionic, nonionic and amphoteric surfactants can be used as long as they do not impair electrical insulation.
- nonionic surfactants particularly polymer-based nonionics, can be used.
- a surfactant is preferred.
- the polymeric nonionic surfactant include polyoxyethylene lauryl ether and sorbitan monostearate.
- Coating methods for the coating composition include knife coating method, cast coating method, roll coating method, gravure coating method, blade coating method, rod coating method, air doctor coating method, curtain coating method, fakunrun coating method, kiss coating method Method, screen coating method, spin coating method, spray coating method, extrusion coating method, electrodeposition coating method, etc. can be used, but among these, operability is easy, film thickness variation is small, and productivity is excellent. From the point of view, a roll coating method, a gravure coating method, a cast coating method, particularly a cast coating method is preferable, and an excellent film for a film capacitor can be produced.
- the coating composition when the coating composition is cast on the substrate surface, dried and then peeled off from the substrate, the resulting high dielectric film is excellent in terms of high electrical insulation and high withstand voltage, and is a thin film. It is excellent in that it has flexibility.
- the base material used for the cast coating is preferably one having a non-porous surface, and is not particularly limited as long as it is a material capable of forming a dense film surface.
- a resin film such as a polyester film, a polycarbonate film, or a polyimide film
- the metal foil include aluminum foil and copper foil.
- what performed the mold release process is preferable.
- the high dielectric film of the present invention thus obtained can have a film thickness of 20 ⁇ m or less, preferably 10 ⁇ m or less, more preferably 6 ⁇ m or less, and particularly preferably 5 ⁇ m or less.
- the lower limit of the film thickness is preferably about 2 ⁇ m from the viewpoint of maintaining mechanical strength.
- the present invention also relates to a film capacitor in which an electrode layer is laminated on at least one surface of the high dielectric film of the present invention.
- the structure of the film capacitor for example, a laminated type in which electrode layers and high dielectric films are alternately laminated (Japanese Patent Laid-Open Nos. 63-181411, 3-18113, etc.) or a tape-like high dielectric Winding type in which a body film and an electrode layer are wound (disclosed in Japanese Patent Application Laid-Open No. 60-262414 in which electrodes are not continuously laminated on a high dielectric film, or electrodes on a high dielectric film And the like disclosed in Japanese Patent Laid-Open No. 3-286514, etc.) are continuously laminated.
- a wound film capacitor that has a simple structure and is relatively easy to manufacture
- a wound film capacitor in which electrode layers are continuously laminated on a high dielectric film it is generally a high dielectric that has electrodes laminated on one side. Two films are rolled up so that the electrodes do not come into contact with each other. If necessary, the film is rolled and fixed so as not to be loosened.
- the electrode layer is not particularly limited, but is generally a layer made of a conductive metal such as aluminum, zinc, gold, platinum, or copper, and is used as a metal foil or a deposited metal film.
- a metal foil or a vapor-deposited metal film, or both may be used in combination.
- a vapor-deposited metal film is preferable in that the electrode layer can be thinned, and as a result, the capacity can be increased with respect to the volume, the adhesiveness with the dielectric is excellent, and the thickness variation is small.
- the vapor-deposited metal film is not limited to a single layer, and for example, a method of forming a semiconductor aluminum oxide layer on an aluminum layer to provide moisture resistance to form an electrode layer (for example, JP-A-2-250306) If necessary, it may be multilayered.
- the thickness of the vapor-deposited metal film is not particularly limited, but is preferably in the range of 100 to 2,000 angstrom, more preferably 200 to 1,000 angstrom. When the thickness of the deposited metal film is within this range, the capacity and strength of the capacitor are balanced, which is preferable.
- the method for forming the film is not particularly limited, and for example, a vacuum deposition method, a sputtering method, an ion plating method, or the like can be employed. Usually, a vacuum deposition method is used.
- Vacuum deposition methods include, for example, the batch method for molded products, the semi-continuous method used for long products, and the air-to-air method.
- the semi-continuous method is the mainstay. Has been done.
- the semi-continuous metal vapor deposition method is a method in which after vapor deposition and winding of a metal in a vacuum system, the vacuum system is returned to the atmospheric system, and the deposited film is taken out.
- the semi-continuous method can be performed by the method described in, for example, Japanese Patent No. 3664342 with reference to FIG.
- the surface of the high dielectric film can be subjected in advance to treatment for improving adhesion such as corona treatment or plasma treatment.
- the thickness of the metal foil is not particularly limited, but is usually in the range of 0.1 to 100 ⁇ m, preferably 1 to 50 ⁇ m, more preferably 3 to 15 ⁇ m.
- the fixing method is not particularly limited, and for example, fixing and protecting the structure may be performed simultaneously by sealing with resin or enclosing in an insulating case.
- the method for connecting the lead wires is not limited, and examples thereof include welding, ultrasonic pressure welding, heat pressure welding, and fixing with an adhesive tape.
- a lead wire may be connected to the electrode before it is wound.
- the opening may be sealed with a thermosetting resin such as urethane resin or epoxy resin to prevent oxidative degradation.
- the film capacitor of the present invention thus obtained has a significantly high volume resistivity while maintaining high dielectric properties.
- Aluminum is vapor-deposited on both sides of the composite film in a vacuum to prepare a sample. This sample is measured for impedance and dielectric loss tangent at frequencies of 100 Hz, 1 kHz, and 10 kHz at 30 ° C. and 85 ° C. using an impedance analyzer (HP4194A manufactured by Hewlett-Packard Company). The relative dielectric constant and dielectric loss (%) are calculated from the measured values of the obtained capacitances and dielectric loss tangents.
- volume resistivity The volume resistivity ( ⁇ ⁇ cm) is measured with a digital superinsulator / microammeter at DC 500 V in a dry air atmosphere at 85 ° C.
- Example 1 In a 1 L separable flask, 640 parts by mass of dimethylacetamide (DMAc) (manufactured by Kishida Chemical Co., Ltd.) and polyvinylidene fluoride (PVdF) (VP825, manufactured by Daikin Industries, Ltd.) Dielectric constant: 9.5 (1 kHz, 25 160) parts by mass and stirred with a three-one motor at 60 ° C. for 24 hours to obtain a PVdF solution having a concentration of 20% by mass.
- DMAc dimethylacetamide
- PVdF polyvinylidene fluoride
- This coating composition was cast on a non-porous polyester (PET) film having a thickness of 38 ⁇ m using a micro gravure coater, and passed through a drying furnace, whereby a VdF resin film was formed on the PET film. A formed laminated film was obtained. Subsequently, the high dielectric film of the present invention having a film thickness of 6.1 ⁇ m was obtained by peeling from the PET film.
- PET non-porous polyester
- Example 2 a coating composition was prepared in the same manner as in Example 1 except that the amount of Al 2 O 3 particles was changed to the amount shown in Table 1. A dielectric film was obtained.
- Example 1 a coating composition was prepared in the same manner as in Example 1 except that Al 2 O 3 particles were not blended, and was cast in the same manner as in Example 1 for comparison with a film thickness of 6.2 ⁇ m. A high dielectric film was obtained.
- Comparative Example 2 A coating composition was prepared in the same manner as in Example 1 except that the amount of Al 2 O 3 particles in Example 1 was 0.72 parts by mass (12 parts by mass of Al 2 O 3 particles with respect to 100 parts by mass of PVdF). Then, casting was performed in the same manner as in Example 1 to obtain a comparative high dielectric film having a thickness of 6.2 ⁇ m.
- Example 1 a coating composition was prepared in the same manner as in Example 1 except that the inorganic oxide particles shown in Table 2 were used in the amounts shown in Table 2 as the inorganic oxide particles (B). In the same manner as described above, a high dielectric film was obtained.
- Example 3 instead of the inorganic oxide particles (B), silica particles (primary average particle diameter of 15 nm, relative dielectric constant (1 kHz, 25 ° C.): 3.5 (manufactured by Sigma-Aldrich Japan Co., Ltd.) were used. Prepared a coating composition in the same manner as in Example 1 and was cast in the same manner as in Example 1 to obtain a high dielectric film.
- silica particles primary average particle diameter of 15 nm, relative dielectric constant (1 kHz, 25 ° C.): 3.5 (manufactured by Sigma-Aldrich Japan Co., Ltd.) were used.
- the inorganic oxide particles used in Table 2 are as follows.
- Example 10 In Example 2, a coating composition was prepared in the same manner as in Example 1 except that a VdF / TFE (80/20 mol%) copolymer was used as the film-forming resin. As a result, a high dielectric film was obtained.
- Example 11 In Example 2, PVdF and cellulose acetate butyrate (CAB) (CAB321 manufactured by Eastman Chemical Japan Co., Ltd.) at 90/10 (mass ratio) were used as the film forming resin in the same manner as in Example 1. A coating composition was prepared and cast in the same manner as in Example 1 to obtain a high dielectric film.
- CAB cellulose acetate butyrate
- Example 12 In Example 2, 90/10 (mass ratio) VdF / TFE (80/20 mol%) copolymer and cellulose acetate butyrate (CAB) (CAB321 manufactured by Eastman Chemical Japan Co., Ltd.) as a film-forming resin.
- a coating composition was prepared in the same manner as in Example 1 except that it was used in Example 1. The coating composition was cast in the same manner as in Example 1 to obtain a high dielectric film.
- Example 13 In Example 2, a coating composition was prepared in the same manner as in Example 1 except that a VdF / TFE (67/33 mol%) copolymer was used as the film-forming resin. As a result, a high dielectric film was obtained.
- Example 14 In Example 2, 90/10 (mass ratio) VdF / TFE (67/33 mol%) copolymer and cellulose acetate butyrate (CAB) (CAB321 manufactured by Eastman Chemical Japan Co., Ltd.) as a film-forming resin.
- a coating composition was prepared in the same manner as in Example 1 except that it was used in Example 1. The coating composition was cast in the same manner as in Example 1 to obtain a high dielectric film.
- Example 15 In Example 2, 80/20 (mass ratio) of VdF / TFE (67/33 mol%) copolymer and cellulose acetate butyrate (CAB) (CAB321 manufactured by Eastman Chemical Japan Co., Ltd.) as a film-forming resin.
- a coating composition was prepared in the same manner as in Example 1 except that it was used in Example 1.
- the coating composition was cast in the same manner as in Example 1 to obtain a high dielectric film.
- Example 16 A coating composition was prepared in the same manner as in Example 1 except that the Al 2 O 3 particles were changed to the amounts shown in Table 3 in Example 14, and the casting composition was cast in the same manner as in Example 1. Thus, a high dielectric film was obtained.
- Example 17 A coating composition was prepared in the same manner as in Example 10 except that the ⁇ -Al 2 O 3 particles were changed to SrTiO 3 (Sakai Chemical Industry Co., Ltd. ST-03).
- the high dielectric film of the present invention having a thickness of 5.7 ⁇ m was obtained by casting in the same manner.
- Example 18 In Example 10, a coating composition was prepared in the same manner as in Example 10 except that the ⁇ -Al 2 O 3 particles were changed to CaTiO 3 (Kyoritsu Material Co., Ltd. CT). The high dielectric film of the present invention having a thickness of 5.9 ⁇ m was obtained by casting.
- Example 19 A coating composition was prepared in the same manner as in Example 10 except that in Example 10, ⁇ -Al 2 O 3 particles were changed to 3Al 2 O 3 .2SiO 2 (manufactured by Kyocera Corporation).
- the high dielectric film of the present invention having a thickness of 6.0 ⁇ m was obtained by casting in the same manner as described above.
- Example 20 Electrodes were formed by vapor-depositing aluminum on both surfaces of the high dielectric film produced in Example 1 with a vacuum deposition apparatus (VE-2030 manufactured by Vacuum Device Co., Ltd.) targeting 3 ⁇ / ⁇ . A voltage-applying lead wire was attached to these aluminum electrodes to produce stamp-type (for simple evaluation) film capacitors.
- VE-2030 manufactured by Vacuum Device Co., Ltd.
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Abstract
Description
無機酸化物粒子(B)が、
(B1)周期表の2族、3族、4族、12族または13族の1種の金属元素の無機酸化物粒子、またはこれらの無機酸化物複合粒子、
(B2)式(1):
M1 a1Nb1Oc1
(式中、M1は2族金属元素;Nは4族金属元素;a1は0.9~1.1;b1は0.9~1.1;c1は2.8~3.2である;M1とNはそれぞれ複数であってもよい)で示される無機複合酸化物粒子、および
(B3)周期表の2族、3族、4族、12族または13族の金属元素の酸化物と酸化ケイ素との無機酸化物複合粒子
よりなる群から選ばれる少なくとも1種
である高誘電性フィルムに関する。
フィルム形成樹脂(A)は、VdF系樹脂(a1)を含む。
VdF系樹脂としては、比誘電率(1kHz、25℃)が4以上のものが、フィルムとしたときに耐電圧、絶縁性、誘電性が向上する点から好ましい。
本発明に用いる無機酸化物粒子(B)は、以下の無機酸化物粒子の少なくとも1種である。
金属元素としては、Be、Mg、Ca、Sr、Ba、Y、Ti、Zr、Zn、Alなどがあげられ、特に、Al、Mg、Y、Znの酸化物が汎用で安価であり、また体積抵抗率が高い点から好ましい。
M1 a1Nb1Oc1
(式中、M1は2族金属元素;Nは4族金属元素;a1は0.9~1.1;b1は0.9~1.1;c1は2.8~3.2である;M1とNはそれぞれ複数であってもよい)で示される無機複合酸化物粒子:
4族の金属元素としては、たとえばTi、Zrが好ましく、2族の金属元素としてはMg、Ca、Sr、Baが好ましい。
無機酸化物粒子(B1)と酸化ケイ素との複合体粒子であり、具体的には、3Al2O3・2SiO2、2MgO・SiO2、ZrO2・SiO2およびMgO・SiO2よりなる群から選ばれる少なくとも1種の粒子があげられる。
本発明において、高誘電性フィルムの電気絶縁性を向上させるためには、上記の特定のフィルム形成樹脂(A)と無機酸化物粒子(B)で充分であるが、そのほか、他の補強用フィラーや親和性向上剤などの添加剤を、本発明の効果を損なわない範囲内で含ませてもよい。
デジタル測長機((株)仙台ニコン製のMF-1001)を用いて、基板に載せたフィルムを室温下にて測定する。
耐電圧・絶縁抵抗試験器(菊水電子工業(株)TOS9201)を用いて、基板に載せたフィルムをドライエアー雰囲気下にて測定する。昇圧速度は100V/sで測定する。
複合フィルムを真空中で両面にアルミニウムを蒸着しサンプルとする。このサンプルをインピーダンスアナライザ(ヒューレットパッカード社製のHP4194A)にて、30℃および85℃下で、周波数100Hz、1kHzおよび10kHzでの静電容量と誘電正接を測定する。得られた各静電容量と誘電正接の測定値から比誘電率および誘電損失(%)を算出する。
デジタル超絶縁計/微小電流計にて、体積抵抗率(Ω・cm)を85℃、ドライエアー雰囲気下、DC500Vで測定する。
1Lセパラブルフラスコ中にジメチルアセトアミド(DMAc)(キシダ化学(株)製)640質量部とポリフッ化ビニリデン(PVdF)(ダイキン工業(株)製のVP825。比誘電率:9.5(1kHz、25℃))を160質量部入れ、60℃にて24時間、スリーワンモーターにて攪拌し、20質量%濃度のPVdF溶液を得た。
実施例1において、Al2O3粒子を表1に示す量に変更したほかは実施例1と同様にしてコーティング用組成物を調製し、実施例1と同様にしてキャスティングして本発明の高誘電性フィルムを得た。
実施例1において、Al2O3粒子を配合しなかったほかは実施例1と同様にしてコーティング用組成物を調製し、実施例1と同様にしてキャスティングして膜厚6.2μmの比較用の高誘電性フィルムを得た。
実施例1において、Al2O3粒子の量を0.72質量部(PVdF100質量部に対しAl2O3粒子12質量部)としたほかは実施例1と同様にしてコーティング用組成物を調製し、実施例1と同様にしてキャスティングして膜厚6.2μmの比較用の高誘電性フィルムを得た。
実施例1において、無機酸化物粒子(B)として表2に示す無機酸化物粒子を表2に示す量で用いたほかは実施例1と同様にしてコーティング用組成物を調製し、実施例1と同様にしてキャスティングして高誘電性フィルムを得た。
実施例1において、無機酸化物粒子(B)に代えてシリカ粒子(一次平均粒子径15nm。比誘電率(1kHz、25℃):3.5(シグマアルドリッチジャパン(株)製)を用いたほかは実施例1と同様にしてコーティング用組成物を調製し、実施例1と同様にしてキャスティングして高誘電性フィルムを得た。
Al2O3粒子(B1):結晶型:θ型。一次平均粒子径:10nm。比誘電率(1kHz、25℃):2.1。大明化学工業(株)製のTM-100
MgO粒子(B1):一次平均粒子径:30nm。比誘電率(1kHz、25℃):9.8。(株)ATR製の3310FY
スピネル(MgO・Al2O3)粒子(B1):一次平均粒子径240nm。比誘電率(1kHz、25℃):20。大明化学工業(株)製のTSP-20
BaTiO3粒子(B2):一次平均粒子径50nm。比誘電率(1kHz、25℃):1500。戸田工業(株)製のT-BTO-50RF
実施例2において、フィルム形成樹脂としてVdF/TFE(80/20モル%)共重合体を用いたほかは実施例1と同様にしてコーティング用組成物を調製し、実施例1と同様にしてキャスティングして高誘電性フィルムを得た。
実施例2において、フィルム形成樹脂としてPVdFと酢酸セルロースブチレート(CAB)(イーストマンケミカルジャパン(株)製のCAB321)を90/10(質量比)で用いたほかは実施例1と同様にしてコーティング用組成物を調製し、実施例1と同様にしてキャスティングして高誘電性フィルムを得た。
実施例2において、フィルム形成樹脂としてVdF/TFE(80/20モル%)共重合体と酢酸セルロースブチレート(CAB)(イーストマンケミカルジャパン(株)製のCAB321)を90/10(質量比)で用いたほかは実施例1と同様にしてコーティング用組成物を調製し、実施例1と同様にしてキャスティングして高誘電性フィルムを得た。
実施例2において、フィルム形成樹脂としてVdF/TFE(67/33モル%)共重合体を用いたほかは実施例1と同様にしてコーティング用組成物を調製し、実施例1と同様にしてキャスティングして高誘電性フィルムを得た。
実施例2において、フィルム形成樹脂としてVdF/TFE(67/33モル%)共重合体と酢酸セルロースブチレート(CAB)(イーストマンケミカルジャパン(株)製のCAB321)を90/10(質量比)で用いたほかは実施例1と同様にしてコーティング用組成物を調製し、実施例1と同様にしてキャスティングして高誘電性フィルムを得た。
実施例2において、フィルム形成樹脂としてVdF/TFE(67/33モル%)共重合体と酢酸セルロースブチレート(CAB)(イーストマンケミカルジャパン(株)製のCAB321)を80/20(質量比)で用いたほかは実施例1と同様にしてコーティング用組成物を調製し、実施例1と同様にしてキャスティングして高誘電性フィルムを得た。
実施例14において、Al2O3粒子を表3に示す量に変更したほかはで用いたほかは実施例1と同様にしてコーティング用組成物を調製し、実施例1と同様にしてキャスティングして高誘電性フィルムを得た。
実施例10において、γ-Al2O3粒子をSrTiO3(堺化学工業(株)ST-03)に変更したほかは実施例10と同様にしてコーティング用組成物を調製し、実施例10と同様にしてキャスティングして膜厚5.7μmの本発明の高誘電性フィルムを得た。
実施例10において、γ-Al2O3粒子をCaTiO3(共立マテリアル(株)CT)に変更したほかは実施例10と同様にしてコーティング用組成物を調製し、実施例10と同様にしてキャスティングして膜厚5.9μmの本発明の高誘電性フィルムを得た。
実施例10において、γ-Al2O3粒子を3Al2O3・2SiO2(京セラ(株)製)に変更したほかは実施例10と同様にしてコーティング用組成物を調製し、実施例10と同様にしてキャスティングして膜厚6.0μmの本発明の高誘電性フィルムを得た。
実施例1で製造した高誘電性フィルムの両面に、真空蒸着装置((株)真空デバイス製のVE-2030)により3Ω/□を目標にしてアルミニウムを蒸着して電極を形成した。これらのアルミニウム電極に電圧印加用のリード線を取り付け、スタンプ型(簡易評価用)のフィルムコンデンサを作製した。
Claims (12)
- フィルム形成樹脂(A)および無機物粒子(B)を含むフィルムであって、フィルム形成樹脂(A)がフッ化ビニリデン系樹脂(a1)を含み、無機物粒子(B)の含有量がフィルム形成樹脂(A)100質量部に対して0.01質量部以上10質量部未満であって、かつ、無機酸化物粒子(B)が、
(B1)周期表の2族、3族、4族、12族または13族の1種の金属元素の無機酸化物粒子、またはこれらの無機酸化物複合粒子、
(B2)式(1):
M1 a1Nb1Oc1
(式中、M1は2族金属元素;Nは4族金属元素;a1は0.9~1.1;b1は0.9~1.1;c1は2.8~3.2である;M1とNはそれぞれ複数であってもよい)で示される無機複合酸化物粒子、および
(B3)周期表の2族、3族、4族、12族または13族の金属元素の酸化物と酸化ケイ素との無機酸化物複合粒子
よりなる群から選ばれる少なくとも1種
である高誘電性フィルム。 - 前記無機酸化物粒子またはこれらの無機酸化物複合粒子(B1)が、Al2O3、MgO、ZrO2、Y2O3、BeOおよびMgO・Al2O3よりなる群から選ばれる少なくとも1種の粒子である請求項1記載の高誘電性フィルム。
- 前記無機酸化物粒子またはこれらの無機酸化物複合粒子(B1)が、γ型Al2O3である請求項1記載の高誘電性フィルム。
- 前記無機複合酸化物粒子(B2)が、BaTiO3、SrTiO3、CaTiO3、MgTiO3、BaZrO3、SrZrO3、CaZrO3およびMgZrO3よりなる群から選ばれる少なくとも1種の粒子である請求項1記載の高誘電性フィルム。
- 前記無機酸化物複合粒子(B3)が、3Al2O3・2SiO2、2MgO・SiO2、ZrO2・SiO2およびMgO・SiO2よりなる群から選ばれる少なくとも1種の粒子である請求項1記載の高誘電性フィルム。
- 前記無機酸化物粒子(B)の一次平均粒子径が1μm以下である請求項1~5のいずれかに記載の高誘電性フィルム。
- 前記無機酸化物粒子(B)の含有量が、フィルム形成樹脂(A)100質量部に対して0.1~5質量部である請求項1~6のいずれかに記載の高誘電性フィルム。
- フィルム形成樹脂(A)が、フッ化ビニリデン系樹脂(a1)と非フッ素系樹脂(a2)を含む請求項1~7のいずれかに記載の高誘電性フィルム。
- 非フッ素系樹脂(a2)が、セルロース系樹脂およびアクリル樹脂よりなる群から選ばれる少なくとも1種である請求項8記載の高誘電性フィルム。
- フッ化ビニリデン系樹脂(a1)が、フッ化ビニリデン/テトラフルオロエチレン系共重合体である請求項1~9のいずれかに記載の高誘電性フィルム。
- フィルムコンデンサ用である請求項1~10のいずれかに記載の高誘電性フィルム。
- 請求項1~11のいずれかに記載の高誘電性フィルムの少なくとも片面に電極層が積層されているフィルムコンデンサ。
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Also Published As
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CN102666682A (zh) | 2012-09-12 |
JPWO2011089948A1 (ja) | 2013-05-23 |
KR20120123432A (ko) | 2012-11-08 |
JP2014082523A (ja) | 2014-05-08 |
KR20140058660A (ko) | 2014-05-14 |
US20120293909A1 (en) | 2012-11-22 |
EP2527393A1 (en) | 2012-11-28 |
JP5494676B2 (ja) | 2014-05-21 |
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