WO2012164867A1 - 金属化フィルムおよびこれを用いた金属化フィルムコンデンサ - Google Patents
金属化フィルムおよびこれを用いた金属化フィルムコンデンサ Download PDFInfo
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- WO2012164867A1 WO2012164867A1 PCT/JP2012/003325 JP2012003325W WO2012164867A1 WO 2012164867 A1 WO2012164867 A1 WO 2012164867A1 JP 2012003325 W JP2012003325 W JP 2012003325W WO 2012164867 A1 WO2012164867 A1 WO 2012164867A1
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- metallized film
- dielectric
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- 239000011104 metalized film Substances 0.000 title claims abstract description 96
- 239000003990 capacitor Substances 0.000 title claims description 56
- 229910052751 metal Inorganic materials 0.000 claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 42
- 239000011347 resin Substances 0.000 claims abstract description 33
- 229920005989 resin Polymers 0.000 claims abstract description 33
- 239000010409 thin film Substances 0.000 claims abstract description 30
- 239000010408 film Substances 0.000 claims abstract description 27
- 125000000623 heterocyclic group Chemical group 0.000 claims abstract description 8
- 125000004386 diacrylate group Chemical group 0.000 claims abstract description 6
- -1 polypropylene Polymers 0.000 claims description 22
- 239000004925 Acrylic resin Substances 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 12
- MUTNCGKQJGXKEM-UHFFFAOYSA-N tamibarotene Chemical group C=1C=C2C(C)(C)CCC(C)(C)C2=CC=1NC(=O)C1=CC=C(C(O)=O)C=C1 MUTNCGKQJGXKEM-UHFFFAOYSA-N 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 claims description 2
- 239000011112 polyethylene naphthalate Substances 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 125000005396 acrylic acid ester group Chemical group 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 65
- 239000003973 paint Substances 0.000 description 27
- BSYVTEYKTMYBMK-UHFFFAOYSA-N tetrahydrofurfuryl alcohol Chemical compound OCC1CCCO1 BSYVTEYKTMYBMK-UHFFFAOYSA-N 0.000 description 25
- 239000011248 coating agent Substances 0.000 description 20
- 238000000576 coating method Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 14
- 239000012752 auxiliary agent Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000003960 organic solvent Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000003999 initiator Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000001771 vacuum deposition Methods 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
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- 238000005452 bending Methods 0.000 description 3
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- 238000012360 testing method Methods 0.000 description 3
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
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- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 125000002816 methylsulfanyl group Chemical group [H]C([H])([H])S[*] 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 1
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- LCXXNKZQVOXMEH-UHFFFAOYSA-N Tetrahydrofurfuryl methacrylate Chemical compound CC(=C)C(=O)OCC1CCCO1 LCXXNKZQVOXMEH-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 150000001875 compounds Chemical class 0.000 description 1
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- 238000005336 cracking Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
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- 239000011229 interlayer Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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- 238000009864 tensile test Methods 0.000 description 1
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
Classifications
-
- 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
- H01G4/005—Electrodes
- H01G4/015—Special provisions for self-healing
-
- 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
- H01G4/32—Wound capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31533—Of polythioether
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31692—Next to addition polymer from unsaturated monomers
- Y10T428/31699—Ester, halide or nitrile of addition polymer
Definitions
- the present invention is used in various electronic equipment, electrical equipment, industrial equipment, automobiles, and the like, and in particular, a metallized film capacitor that is optimal for smoothing, filtering, and snubber use in motor drive inverter circuits of hybrid automobiles and the like. It relates to a metallized film.
- HEVs hybrid vehicles
- the operating voltage range of such an electric motor for HEV is as high as several hundred volts. Therefore, as a capacitor used in connection with such an electric motor, a metallized film capacitor having high withstand voltage and low loss electric characteristics has attracted attention. In addition, metalized film capacitors that have a very long life are also being adopted due to the demand for maintenance-free in the market.
- a metallized film capacitor that uses a deposited metal formed on a dielectric film as an electrode has a smaller volume than the case where a metal foil is used as an electrode. Therefore, it can be reduced in size and weight.
- the self-healing function peculiar to the deposited metal electrode provides high reliability against dielectric breakdown. Therefore, it has been widely used conventionally.
- FIG. 3 shows a configuration of a conventional metallized film 100 as an example of such a metallized film.
- FIG. 3 is a cross-sectional view of a conventional metallized film 100.
- the metallized film 100 includes a dielectric film 101, a metal thin film layer 102, and a dielectric layer 104.
- the metal thin film layer 102 has aluminum as a main component and is formed on both surfaces of the dielectric film 101 by a vacuum deposition method, an ion plating method, or the like.
- the margin 103 is a portion without the metal thin film layer 102.
- the dielectric layer 104 is formed by applying a dielectric paint in which polycarbonate, polyphenylene oxide, or polyarylate is dissolved in an organic solvent to both surfaces or one surface of the dielectric film 101.
- the margin 105 is a portion where the dielectric layer 104 does not exist.
- the metallized film 100 is produced by evaporating and drying the organic solvent contained as a diluent in the dielectric paint.
- the organic solvent one or two or more kinds selected from dichloromethane, dichloroethane, trichloroethylene and the like are appropriately used.
- the metallized film 100 is formed by dissolving the polymer compound used for the dielectric layer 104 in an organic solvent and applying it to form the dielectric layer. Therefore, a heat source for vaporizing and removing the organic solvent and a cooling device or a high-performance solvent recovery device are required.
- Patent Document 1 proposes forming a metallized film 200 shown in FIG. 4 by forming a dielectric film using an ultraviolet curable resin as a dielectric paint. That is, the metallized film 200 is produced as follows. First, a metal thin film layer 202 mainly composed of aluminum and a margin 203 without the metal thin film layer 202 are formed on both surfaces of the dielectric film 201 by a vacuum deposition method, an ion plating method, or the like. Thereafter, an ultraviolet curable coating material is further applied to at least one surface of the dielectric film 201, and then the ultraviolet curable coating material is cured by ultraviolet irradiation to form the dielectric layer 204.
- the ultraviolet curable coating material constituting the dielectric layer 204 is prepared by adding a photopolymerization initiator that cures the ultraviolet curable resin to the ultraviolet curable resin. That is, this paint does not contain an organic solvent. Therefore, problems associated with the use of the organic solvent described above do not occur.
- An object of the present invention is to solve such problems and to provide a metallized film capacitor having excellent capacitor characteristics by suppressing the occurrence of cracks in the dielectric layer during the production of the metallized film.
- the metallized film of the present invention has a dielectric film, a metal thin film layer, and a dielectric layer.
- the metal thin film layer is formed on at least one surface of the dielectric film.
- the dielectric layer is formed on the metal thin film layer.
- the dielectric layer is mainly composed of an acrylate resin composed of dimethylol tricyclodecane diacrylate and a monoacrylate containing a heterocyclic ring.
- the metallized film having this configuration By using the metallized film having this configuration, the possibility of occurrence of cracks during the production of the metallized film capacitor can be reduced, and the deterioration of the capacitor characteristics can be suppressed.
- FIG. 1 is a sectional view of a metallized film according to an embodiment of the present invention.
- FIG. 2 is a perspective view of a metallized film capacitor according to an embodiment of the present invention.
- UV curable resin after curing is low in flexibility and fragile. For this reason, when a winding type metallized film capacitor is produced using a metallized film using such a resin, there is a risk that cracks may occur in the dielectric layer formed of the ultraviolet curable paint. This crack causes a decrease in the capacitor characteristics of the finally produced metalized film capacitor. In addition, if the capacitor element wound and manufactured from the viewpoint of space saving or the like is further pressed into a flat shape, cracks may occur in the dielectric layer having low flexibility.
- a metallized film is wound around a relatively large annular bobbin to produce a wound body, which is crushed and then cut with a saw blade. Divide into pieces.
- a plurality of metallized film capacitors can be produced simultaneously by this method.
- the dielectric layer formed of the ultraviolet curable coating is fragile, cracks are generated in the dielectric layer in the same manner as the wound metallized film capacitor when cutting with a saw blade. As a result, the capacitor characteristics of the metallized film capacitor are degraded.
- FIG. 1 is a schematic sectional view showing the structure of a metallized film according to an embodiment of the present invention.
- FIG. 2 is a perspective view of a metallized film capacitor according to an embodiment of the present invention.
- the metallized film 1 has a dielectric film 2, a metal thin film layer 3, and a dielectric layer 4.
- the metal thin film layer 3 is mainly composed of aluminum and is formed on both surfaces of the dielectric film 2.
- the metal thin film layer 3 can be formed of various metals such as zinc, magnesium, and silicon in addition to aluminum.
- the metal thin film layer 3 may be formed only on one surface of the dielectric film 2. In that case, a metal layer is further formed on the surface of the dielectric film opposite to the surface on which the metal thin film layer 3 is formed.
- the metal thin film layer 3 and the metal layer form a pair of positive and negative electrode layers.
- the metal layer may be formed of a metal foil made of aluminum, zinc, magnesium, silicon, alloys thereof, or the like.
- a metal thin film layer formed on one surface of another dielectric film may be used.
- the dielectric layer 4 is formed on at least one of the pair of metal thin film layers 3.
- the “main component” is defined as the component having the largest weight ratio among the components constituting the metal thin film layer 3. For example, it is 55% by weight or more.
- the dielectric film 2 is, for example, a sheet having a thickness of about 2.8 ⁇ m formed of polypropylene resin.
- the metal thin film layer 3 is formed by, for example, a vacuum deposition method. As shown in FIG. 1, the metal thin film layer 3 is divided by a margin 5. The margin 5 is formed by applying margin oil in a predetermined pattern to prevent adhesion of metal particles when performing vacuum deposition.
- the dielectric film 2 may be made of polyethylene terephthalate resin, polyethylene naphthalate resin, or polyphenylene sulfide resin other than polypropylene resin. In addition to the vacuum deposition method, an ion plating method or the like may be used as the deposition method.
- the dielectric layer 4 is formed so as to cover the metal thin film layer 3 provided on the dielectric film 2.
- FIG. 1 shows a configuration in which the dielectric layer 4 is provided only on one side of the dielectric film 2, it may be provided on both sides.
- the dielectric layer 4 is formed by curing a dielectric paint mainly composed of an acrylic ester resin, which is an ultraviolet curable resin, by ultraviolet irradiation, and is filled in the margin 5 as shown in FIG. Yes.
- the margin 6 is a portion where the dielectric layer 4 formed simultaneously with the formation of the dielectric layer 4 does not exist.
- the margin 6 is formed by performing masking in advance when applying the dielectric paint. The role of the margin 6 will be described later.
- the dielectric paint used for the metallized film 1 includes dimethylol tricyclodecane diacrylate (hereinafter abbreviated as DMTCDA) represented by chemical formula (1) and tetrahydrofurfuryl acrylate (hereinafter abbreviated as THFA) represented by chemical formula (2).
- the main component is an acrylic ester resin obtained by mixing the above.
- the “main component” is defined as the component having the largest weight ratio among the components constituting the dielectric paint. For example, it is 90% by weight or more.
- this dielectric coating material contains 2-methyl-1- [4- (methylthio) phenyl] -2-mon represented by the chemical formula (3) as a photopolymerization initiator for promoting the curing of the acrylate resin by ultraviolet irradiation.
- Forinopropanone-1-one is added.
- the weight ratio of the acrylate resin to 2-methyl-1- [4- (methylthio) phenyl] -2-montforinopropan-1-one is, for example, 100: 2 It is adjusted so that it becomes, and stirred well to dissolve both completely.
- the dielectric paint is added with an ethylene / vinyl acetate copolymer represented by the chemical formula (4), which is a thermoplastic resin for the purpose of promoting the interlayer adhesion of the metallized film capacitor 10.
- the ethylene / vinyl acetate copolymer is added so that the weight ratio is 100: 1 when the weight of the dielectric coating containing the photopolymerization initiator is 100.
- a dielectric paint is prepared by blending an acrylic ester resin, a photopolymerization initiator, and a thermoplastic resin. Then, the dielectric paint is applied to the dielectric film 2 on which the metal thin film layer 3 is formed by a micro gravure coater. Furthermore, the dielectric layer 4 is formed by irradiating ultraviolet rays from a high-pressure mercury lamp to cure the dielectric paint in an ultraviolet curing furnace filled with nitrogen gas and having an oxygen concentration of 900 ppm or less. That is, the dielectric layer 4 is mainly composed of an acrylate resin composed of DMTCDA and THFA.
- the metallized film 1 can be produced as described above.
- the above-mentioned dielectric paint contains low viscosity THFA. Therefore, the flexibility of the dielectric layer 4 is very good. As a result, the occurrence of cracks at the time of winding during the production of a wound metallized film capacitor or during cutting during the production of a laminated metallized film capacitor is reduced.
- each dielectric coating material adjusted to the following predetermined weight ratio is poured into a Teflon (registered trademark) container having a length of 20 mm, a width of 10 mm, and a depth of 0.2 mm. Individual pieces produced by irradiating and curing ultraviolet rays are used as samples to be evaluated.
- a bending test is performed in which a load of 50 g is applied to one end of the sample to check for the occurrence of cracks.
- sample EA The weight ratio of DMTCDA and THFA constituting the acrylate resin that is the main component of the above-described dielectric coating is set to 95: 5.
- a sample is prepared by the above-described method using this dielectric paint.
- sample EB The weight ratio of DMTCDA and THFA constituting the acrylate resin, which is the main component of the dielectric coating, is 90:10. A sample is prepared by the above-described method using this dielectric paint.
- sample EC The weight ratio of DMTCDA and THFA constituting the acrylate resin, which is the main component of the dielectric coating, is 80:20.
- a sample is prepared by the above-described method using this dielectric paint.
- sample ED The weight ratio of DMTCDA and THFA constituting the acrylate resin that is the main component of the dielectric coating is set to 70:30.
- a sample is prepared by the above-described method using this dielectric paint.
- Example EE The weight ratio of DMTCDA and THFA constituting the acrylate resin that is the main component of the dielectric coating is set to 50:50.
- a sample is prepared by the above-described method using this dielectric paint.
- Sample CA Only DMTCDA is used as a component constituting the acrylic ester resin which is the main component of the dielectric coating. That is, it differs from Samples EA to EE in that the dielectric coating does not contain THFA.
- a sample is prepared by the above-described method using such a dielectric paint.
- DMTCDA and EHA are used as components constituting the acrylate resin that is the main component of the dielectric coating. That is, the dielectric paint is replaced with THFA, and EHA is a component, which is different from Samples EA to EE. In addition, EHA has the characteristic that viscosity is low like THFA.
- the weight ratio of DMTCDA and EHA is 90:10. A sample is prepared by the above-described method using such a dielectric paint.
- DMTCDA and EHA are used as components constituting the acrylic ester resin which is the main component of the dielectric coating.
- the weight ratio of DMTCDA and EHA is 50:50.
- a sample is prepared by the above-described method using such a dielectric paint.
- the Young's modulus of sample CA using DMTCDA alone as an acrylic ester resin is 13.5. This value is larger than the Young's modulus of Samples EA to EE, Samples CB1 and CB2 to which THFA, which is an acrylate having a low viscosity, or EHA is added.
- the weight ratio of DMTCDA and THFA is 90:10.
- the weight ratio of DMTCDA to EHA is 90:10.
- THFA THFA among acrylates.
- the metallized film capacitor 10 is produced by the metallized film 1 using the acrylic ester resin mixed with THFA as an auxiliary agent, the metallized film using the acrylic ester resin mixed with the conventional acrylate as an auxiliary agent is used to form a metal.
- the possibility of generating cracks is further reduced as compared with the production of the fluorinated film capacitor.
- the metallized film 1 can suppress the occurrence of cracks in the dielectric layer 4 when the metallized film capacitor is produced. That is, by using the metallized film 1, a metallized film capacitor 10 having excellent capacitor characteristics can be produced.
- Sample EE and Sample CB2 have slightly higher dielectric loss angle characteristics of 1.2 and 2.0, respectively. However, these are not particularly problematic in actual use. Further, when comparing the sample EE and the sample CB2, the sample EE has a better dielectric loss angle characteristic. That is, a metallized film capacitor 10 made of a metallized film 1 using an acrylic ester resin mixed with THFA as an auxiliary agent is a metallized film using an acrylic ester resin mixed with a conventional acrylate as an auxiliary agent. The characteristics are superior to those of the metallized film capacitor produced by the above method.
- the weight ratio of DMTCDA to the total of DMTCDA and THFA as a component constituting the acrylic ester resin that is the main component of the dielectric coating is 0.5 or more, and 0.0.
- blends so that it may become a ratio of 95 the capacitor
- an acrylic ester resin, a photopolymerization initiator, and a thermoplastic resin are mentioned as the components of the dielectric coating, but additives such as an adhesive and a leveling agent may be added as necessary.
- the metallized film capacitor 10 includes a wound body 11 produced by winding the metallized film 1, and a metallicon electrode 12 formed by metal spraying zinc or the like on both end faces of the wound body 11. That is, the pair of metallicon electrodes 12 is formed on both end surfaces of the wound body 11 in the winding axis direction.
- the metallicon electrode 12 may be formed using an alloy of zinc and tin other than zinc.
- the metallized film 1 When forming the metallized film capacitor 10, the metallized film 1 is cut in the longitudinal direction along the margin 6 shown in FIG. 1, and the cut metallized film is wound.
- a broken line A in FIG. 1 indicates a cutting position.
- the dielectric layer 4 that is an insulator is present at the margin 6, the contact between the metal thin film layer 3 and the metallicon electrode 12 is hindered, and electrical connection becomes difficult. That is, the margin 6 is formed in order to securely connect the metal thin film layer 3 and the metallicon electrode 12.
- vertical to the winding-axis direction of the winding body 11 is flat shape.
- the metallized film capacitor 10 has a flat shape.
- the winding shaft is pulled out and compressed so that the wound body whose center is in a hollow state is sandwiched from the side surface. It is formed by doing. The reason why the center is wound once is to facilitate the compression of the wound body.
- a flat metallized film capacitor shown in FIG. 2 was prepared using the metallized films of Samples EA to EE and Samples CA, CB1 and CB2 in Table 3, and the presence or absence of cracks in the dielectric layer 4 was confirmed. Results are shown.
- the sample EB is mixed with THFA and the sample CB1 is mixed with the same amount of EHA (10% by weight).
- the sample EB has no cracks
- the sample CB1 has cracks.
- no cracks are generated even in the sample EA having a small amount of THFA.
- Table 1 the sample EA and the sample CB1 are not slightly different with respect to the Young's modulus.
- the presence / absence of cracks and the number thereof differ greatly depending on the slight difference in flexibility of the dielectric layer 4.
- THFA can improve the flexibility of the dielectric layer 4 and can reduce the possibility of cracking more than EHA.
- the dielectric paint mainly composed of an acrylic ester resin prepared by mixing low viscosity THFA with DMTCDA, the dielectric paint can be lowered to an optimum viscosity for coating. Moreover, the property which becomes brittle after hardening of an ultraviolet curable resin can be relieved.
- THFA tetrahydrofurfuryl methacrylate represented by chemical formula (5)
- monoacrylates represented by chemical formulas 6 to 9 below.
- a monoacrylate containing a heterocyclic ring is sterically hindered by a heterocyclic ring, so that even if it is cured to form the dielectric layer 4, the arrangement of molecules in the resin becomes random and is difficult to crystallize. As a result, the dielectric layer 4 becomes flexible and the generation of cracks is suppressed.
- the metallized film according to the present invention is effective for suppressing the occurrence of cracks in the dielectric layer during metallized film capacitor fabrication. Therefore, a metallized film capacitor having excellent capacitor characteristics can be provided. Therefore, the metallized film of the present invention can be suitably employed when producing a metallized film of a metallized film capacitor used in various electronic devices, electrical devices, industrial devices, automobiles and the like. In particular, flat metalized film capacitors are often used as capacitors for vehicles that require space saving. Therefore, the present invention is very important in the automobile industry where HEV is being developed.
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Abstract
Description
上述の誘電体塗料の主成分であるアクリル酸エステル樹脂を構成するDMTCDAとTHFAの重量比を95対5とする。この誘電体塗料を用いて上述の方法により試料を作製する。
誘電体塗料の主成分であるアクリル酸エステル樹脂を構成するDMTCDAとTHFAの重量比を90対10とする。この誘電体塗料を用いて上述の方法により試料を作製する。
誘電体塗料の主成分であるアクリル酸エステル樹脂を構成するDMTCDAとTHFAの重量比を80対20とする。この誘電体塗料を用いて上述の方法により試料を作製する。
誘電体塗料の主成分であるアクリル酸エステル樹脂を構成するDMTCDAとTHFAの重量比を70対30とする。この誘電体塗料を用いて上述の方法により試料を作製する。
誘電体塗料の主成分であるアクリル酸エステル樹脂を構成するDMTCDAとTHFAの重量比を50対50とする。この誘電体塗料を用いて上述の方法により試料を作製する。
誘電体塗料の主成分であるアクリル酸エステル樹脂を構成する成分としてDMTCDAのみを用いる。すなわち、誘電体塗料がTHFAを含まない点に関してサンプルEA~サンプルEEと異なる。このような誘電体塗料を用いて上述の方法により試料を作製する。
誘電体塗料の主成分であるアクリル酸エステル樹脂を構成する成分としてDMTCDAと2-エチルヘキシルアクリレート(以下、EHAと略す)を用いる。すなわち、誘電体塗料がTHFAに替え、EHAを成分とする点がサンプルEA~サンプルEEと異なる。なお、EHAはTHFAと同様に粘度が低いという特性を有する。DMTCDAとEHAの重量比は90対10とする。このような誘電体塗料を用いて上述の方法により試料を作製する。
誘電体塗料の主成分であるアクリル酸エステル樹脂を構成する成分としてDMTCDAとEHAを用いる。DMTCDAとEHAの重量比は50対50とする。このような誘電体塗料を用いて上述の方法により試料を作製する。
2 誘電体フィルム
3 金属薄膜層
4 誘電体層
5,6 マージン
10 金属化フィルムコンデンサ
11 巻回体
12 メタリコン電極
Claims (7)
- 誘電体フィルムと、
前記誘電体フィルムの少なくとも一方の面に形成された金属薄膜層と、
前記金属薄膜層の上に形成された誘電体層と、を備え、
前記誘電体層は、ジメチロールトリシクロデカンジアクリレートと複素環を含有するモノアクリレートで構成されるアクリル酸エステル樹脂を主成分とする、
金属化フィルム。 - 前記複素環を含有するモノアクリレートはテトラヒドロフルフリルアクリレートである、
請求項1記載の金属化フィルム。 - 前記アクリル酸エステル樹脂が含有する前記ジメチロールトリシクロデカンジアクリレートと前記テトラヒドロフルフリルアクリレートの合計に対する前記ジメチロールトリシクロデカンジアクリレートの重量比が0.7以上、0.9以下の範囲にある、
請求項2記載の金属化フィルム。 - 前記誘電体フィルムがポリプロピレン樹脂、ポリエチレンテレフタレート樹脂、ポリエチレンナフタレート樹脂、ポリフェニレンスルファイド樹脂のいずれか1つで形成された、
請求項1記載の金属化フィルム。 - 請求項1記載の前記金属化フィルムは、
前記誘電体フィルムの前記金属薄膜層が形成された面と反対側の面に、更に金属層を備え、
前記金属化フィルムを巻回して形成された巻回体と、
前記巻回体の、巻回軸方向における両端面に金属溶射により形成されたメタリコン電極と、を備えた、
金属化フィルムコンデンサ。 - 前記巻回体の前記巻回軸方向に垂直な断面形状が扁平状である、
請求項5記載の金属化フィルムコンデンサ。 - 前記複素環を含有するモノアクリレートはテトラヒドロフルフリルアクリレートである、
請求項5記載の金属化フィルムコンデンサ。
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US14/009,527 US9502179B2 (en) | 2011-05-31 | 2012-05-22 | Metallized film and metallized film capacitor using same |
JP2013517850A JP5945734B2 (ja) | 2011-05-31 | 2012-05-22 | 金属化フィルムおよびこれを用いた金属化フィルムコンデンサ |
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Citations (2)
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JPH0726193A (ja) * | 1993-06-25 | 1995-01-27 | Matsushita Electric Ind Co Ltd | 誘電体用塗料及びフィルムコンデンサ |
JP2000216043A (ja) * | 1999-01-25 | 2000-08-04 | Matsushita Electric Ind Co Ltd | コンデンサ用フィルム |
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JPS53103198A (en) * | 1977-02-18 | 1978-09-08 | Hitachi Ltd | Preparing thick film dielectric layer and thick film dielectic layer paste |
JP3074903B2 (ja) | 1992-02-27 | 2000-08-07 | 松下電器産業株式会社 | コンデンサ用誘電体フィルム |
US6083628A (en) * | 1994-11-04 | 2000-07-04 | Sigma Laboratories Of Arizona, Inc. | Hybrid polymer film |
JP4239269B2 (ja) | 1999-01-18 | 2009-03-18 | パナソニック株式会社 | コンデンサ用フィルム |
WO2007139165A1 (ja) * | 2006-05-31 | 2007-12-06 | Soshin Electric Co., Ltd. | フィルムコンデンサ |
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JPH0726193A (ja) * | 1993-06-25 | 1995-01-27 | Matsushita Electric Ind Co Ltd | 誘電体用塗料及びフィルムコンデンサ |
JP2000216043A (ja) * | 1999-01-25 | 2000-08-04 | Matsushita Electric Ind Co Ltd | コンデンサ用フィルム |
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