CN112366085A - Thin film capacitor and production process thereof - Google Patents
Thin film capacitor and production process thereof Download PDFInfo
- Publication number
- CN112366085A CN112366085A CN202011091960.5A CN202011091960A CN112366085A CN 112366085 A CN112366085 A CN 112366085A CN 202011091960 A CN202011091960 A CN 202011091960A CN 112366085 A CN112366085 A CN 112366085A
- Authority
- CN
- China
- Prior art keywords
- film
- parts
- capacitor
- oil
- oxidation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 95
- 239000010409 thin film Substances 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000010408 film Substances 0.000 claims abstract description 127
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 42
- 230000003064 anti-oxidating effect Effects 0.000 claims abstract description 41
- 229910052751 metal Inorganic materials 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 38
- 239000003822 epoxy resin Substances 0.000 claims abstract description 34
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 27
- -1 dodecyl dimethyl tertiary amine Chemical class 0.000 claims abstract description 21
- 239000004033 plastic Substances 0.000 claims abstract description 20
- 229920003023 plastic Polymers 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 239000002283 diesel fuel Substances 0.000 claims abstract description 15
- 239000003208 petroleum Substances 0.000 claims abstract description 15
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052788 barium Inorganic materials 0.000 claims abstract description 14
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims abstract description 14
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 14
- 238000005507 spraying Methods 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 7
- 238000004382 potting Methods 0.000 claims abstract description 5
- 238000007731 hot pressing Methods 0.000 claims abstract description 4
- 238000001704 evaporation Methods 0.000 claims abstract 2
- 239000003921 oil Substances 0.000 claims description 61
- 239000003963 antioxidant agent Substances 0.000 claims description 27
- 230000003078 antioxidant effect Effects 0.000 claims description 26
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 23
- 230000003647 oxidation Effects 0.000 claims description 20
- 238000007254 oxidation reaction Methods 0.000 claims description 20
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- GHKOFFNLGXMVNJ-UHFFFAOYSA-N Didodecyl thiobispropanoate Chemical compound CCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCC GHKOFFNLGXMVNJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910001128 Sn alloy Inorganic materials 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- GZCWPZJOEIAXRU-UHFFFAOYSA-N tin zinc Chemical compound [Zn].[Sn] GZCWPZJOEIAXRU-UHFFFAOYSA-N 0.000 claims description 7
- DSEKYWAQQVUQTP-XEWMWGOFSA-N (2r,4r,4as,6as,6as,6br,8ar,12ar,14as,14bs)-2-hydroxy-4,4a,6a,6b,8a,11,11,14a-octamethyl-2,4,5,6,6a,7,8,9,10,12,12a,13,14,14b-tetradecahydro-1h-picen-3-one Chemical compound C([C@H]1[C@]2(C)CC[C@@]34C)C(C)(C)CC[C@]1(C)CC[C@]2(C)[C@H]4CC[C@@]1(C)[C@H]3C[C@@H](O)C(=O)[C@@H]1C DSEKYWAQQVUQTP-XEWMWGOFSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000001089 [(2R)-oxolan-2-yl]methanol Substances 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 5
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 238000009832 plasma treatment Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- NHXVNEDMKGDNPR-UHFFFAOYSA-N zinc;pentane-2,4-dione Chemical compound [Zn+2].CC(=O)[CH-]C(C)=O.CC(=O)[CH-]C(C)=O NHXVNEDMKGDNPR-UHFFFAOYSA-N 0.000 claims description 5
- LRQGFQDEQPZDQC-UHFFFAOYSA-N 1-Phenyl-1,3-eicosanedione Chemical compound CCCCCCCCCCCCCCCCCC(=O)CC(=O)C1=CC=CC=C1 LRQGFQDEQPZDQC-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000003449 preventive effect Effects 0.000 claims description 4
- BSYVTEYKTMYBMK-UHFFFAOYSA-N tetrahydrofurfuryl alcohol Chemical compound OCC1CCCO1 BSYVTEYKTMYBMK-UHFFFAOYSA-N 0.000 claims description 4
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- 238000007740 vapor deposition Methods 0.000 claims description 3
- 238000009776 industrial production Methods 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000002195 synergetic effect Effects 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- ODJQKYXPKWQWNK-UHFFFAOYSA-L 3-(2-carboxylatoethylsulfanyl)propanoate Chemical compound [O-]C(=O)CCSCCC([O-])=O ODJQKYXPKWQWNK-UHFFFAOYSA-L 0.000 description 3
- 239000013556 antirust agent Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000011104 metalized film Substances 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 239000003508 Dilauryl thiodipropionate Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- YODSJFCDKPWAQA-UHFFFAOYSA-N decyl 3-(3-decoxy-3-oxopropyl)sulfanylpropanoate Chemical compound CCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCC YODSJFCDKPWAQA-UHFFFAOYSA-N 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000019304 dilauryl thiodipropionate Nutrition 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 150000002432 hydroperoxides Chemical class 0.000 description 1
- 125000000687 hydroquinonyl group Chemical group C1(O)=C(C=C(O)C=C1)* 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/33—Thin- or thick-film capacitors
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D191/00—Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/224—Housing; Encapsulation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
-
- 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
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The application relates to the field of capacitors, and particularly discloses a film capacitor and a production process thereof. The film capacitor comprises a plastic shell, a capacitor core arranged in the plastic shell and epoxy resin encapsulated in the plastic shell; the capacitor core comprises a base film, metal films are arranged on the front surface and the back surface of the base film, and anti-oxidation oil is arranged on the metal films and is prepared from the following raw materials in parts by weight: 65-70 parts of 0# light diesel oil, 19-28 parts of film-forming agent, 9-17 parts of barium petroleum sulfonate, 0.3-0.5 part of dodecyl dimethyl tertiary amine and 0.5-1 part of ethylene glycol. The production process of the film capacitor comprises the following steps: s1, an evaporation process; s2, a winding process; s3, hot pressing; s4, wrapping; s5, a metal spraying process; s6, an energizing process; s7, electric welding; and S8, potting. The thin film capacitor has the advantages of high temperature resistance (85 ℃) and high humidity resistance (85% R.H.). In addition, the production process has the advantages of being simple to operate and convenient for industrial production.
Description
Technical Field
The present application relates to the field of capacitors, and more particularly, to a thin film capacitor and a process for producing the same.
Background
A film capacitor is a capacitor having a structure in which a metal foil is used as an electrode, and the electrode is stacked with a plastic film such as polyethylene, polypropylene, polystyrene, or polycarbonate from both ends and wound into a cylindrical shape.
The film capacitor made by vacuum vapor plating a thin metal layer on the plastic film as the electrode is called as the metallized film capacitor. The metallized film capacitor can save the thickness of an electrode foil, reduce the volume of unit capacity of the capacitor, has the advantages of small shape and large capacity, and is widely applied in the electrical field.
At present, zinc-aluminum alloy is mostly used as a vapor deposited metal film, for example, a thin film capacitor disclosed in chinese patent publication No. CN106971847A includes a case, a leg, and a capacitor core, the capacitor core includes a composite film, a double-sided metallized ZnAl film, and a gold-sprayed layer, the composite film and the double-sided metallized ZnAl film are arranged in a staggered manner, the double-sided metallized ZnAl film is vapor deposited on both sides of the composite film, and the outer end of the capacitor core is provided with the gold-sprayed layer.
However, in coastal areas, the external environment has high humidity and high temperature, and the casing is usually made of plastic, so that water vapor is easy to intrude into the casing, the breakdown potential of air is reduced, air ionization is accelerated, and the gold ZnAl film is easy to be oxidized into non-conductive zinc oxide and aluminum oxide due to moisture, so that the area of a metal coating of the metallized film is reduced, and the capacitor has serious capacity loss.
Therefore, the requirements of high temperature resistance (85 ℃) and high humidity resistance (85% R.H.) are difficult to meet according to the current production process.
Disclosure of Invention
Aiming at the problem that the film capacitor in the prior art is difficult to meet the requirements of high temperature resistance (85 ℃) and high humidity resistance (85% R.H.), the first object of the application is to provide a film capacitor which has the advantages of high temperature resistance (85 ℃) and high humidity resistance (85% R.H.).
A second object of the present application is to provide a production process of a thin film capacitor, which has the advantages of simple operation and convenience for industrial production.
In order to achieve the first object, the present application provides the following technical solutions: a film capacitor comprises a plastic shell, a capacitor core arranged in the plastic shell and epoxy resin encapsulated in the plastic shell; the capacitor core comprises a base film, and metal films are arranged on the front surface and the back surface of the base film, and the capacitor core is characterized in that anti-oxidation oil is arranged on the metal films, and the anti-oxidation oil is prepared from the following raw materials in parts by weight: 65-70 parts of 0# light diesel oil, 19-28 parts of film forming agent, 9-17 parts of barium petroleum sulfonate, 0.3-0.5 part of dodecyl dimethyl tertiary amine, 0.5-1 part of ethylene glycol and 2-3 parts of antioxidant.
By adopting the technical scheme, because the anti-oxidation oil is arranged on the metal film, protection is formed on the metal film, water vapor invading the capacitor core is separated, the water vapor is prevented from directly contacting the metal film on the base film, and the oxidation efficiency is delayed, so that the requirements of high temperature resistance (85 ℃) and high humidity resistance (85% R.H.) can be met.
Specifically, the barium petroleum sulfonate has good antirust performance and film-forming performance, and the dodecyl dimethyl tertiary amine and the ethylene glycol can form a water-resisting film and further synergistically improve the antirust performance of the barium petroleum sulfonate;
the No. 0 light diesel oil is used as a carrier, so that various additives are uniformly dispersed, physical adsorption is carried out on the place with less adsorption of the antirust agent by utilizing the oil effect, and the oil effect penetrates into the antirust agent molecules which are adsorbed in a directional manner, and the oil effect and the antirust agent molecules together block pores, so that an adsorption film is more complete and compact; meanwhile, the 0# light diesel oil has better high and low temperature performance and excellent additive sensitivity, and the viscosity is low, so that the antirust performance of the oil product can be better exerted;
the film forming agent improves the adhesive force of the anti-oxidation oil after the anti-oxidation oil is formed into a film, and improves the oil film strength and the heat and humidity resistance, thereby preventing the anti-oxidation oil from being eroded and lost by water vapor in a high-temperature (85 ℃) and high-humidity (85% R.H.) environment. In addition, the coating has good antirust property while the film forming thickness is reduced;
the addition of the antioxidant can delay the oxidation process of the anti-oxidation oil, so that the service life of the anti-oxidation oil is prolonged.
Therefore, the anti-oxidation oil with good adhesiveness and good rust resistance can be formed by compounding 0# light diesel oil, a film forming agent, barium petroleum sulfonate, dodecyl dimethyl tertiary amine, ethylene glycol and an antioxidant, and after the anti-oxidation oil is coated on a metal film, the metal film is prevented from being eroded by water vapor, so that the produced film capacitor meets the requirements of high temperature resistance (85 ℃) and high humidity resistance (85% R.H.).
In addition, the encapsulation epoxy resin and the anti-oxidation oil are cooperatively used, so that the high temperature (85 ℃) and high humidity (85% R.H.) resistance of the film capacitor can be greatly improved.
Further, the anti-oxidation oil is prepared from the following raw materials in parts by weight: 67-70 parts of 0# light diesel oil, 23-25 parts of film-forming agent, 9-13 parts of barium petroleum sulfonate, 0.3-0.5 part of dodecyl dimethyl tertiary amine, 0.5-1 part of ethylene glycol and 2-3 parts of antioxidant.
Further, the anti-oxidation oil is prepared by the following steps:
1) mixing 0# light diesel oil and a film-forming agent, and stirring at the temperature of 80-90 ℃ to obtain solution A;
2) adding barium petroleum sulfonate, dodecyl dimethyl tertiary amine, ethylene glycol and an antioxidant into the solution A, and stirring at 60-70 ℃ to obtain the anti-oxidation oil.
Further, the film forming agent is prepared by the following steps: heating coumarone resin 26-30 parts and ceresin 1-2 parts to 76-83 deg.C, and stirring for 50 min; then adding 5-10 parts of tetrahydrofurfuryl alcohol, 0.6-1 part of zinc acetylacetonate and 1-2 parts of stearoylbenzoylmethane in turn, stirring, and cooling to normal temperature.
By adopting the technical scheme, the coumarone resin has the advantage of good heat resistance and simultaneously has certain antirust performance, so that the integral antirust performance of the anti-oxidation oil is synergistically improved;
the addition of the ozokerite can improve the film forming feeling of the anti-oxidation oil and the prevention performance of the anti-oxidation oil.
The tetrahydrofurfuryl alcohol has the solubility for the coumarone resin and the ozokerite and has better coalescence capability, thereby forming a uniform anti-oxidation oil film forming system with the coumarone resin and the ozokerite, and reducing the lowest film forming temperature of the anti-oxidation oil under the condition of less using amount, so that the anti-oxidation oil is suitable for different environmental temperatures, in particular to the environment with high temperature (85 ℃) and high humidity (85 percent R.H.);
the zinc acetylacetonate can promote the hardening of the coumarone resin, so that a film forming system of the coumarone resin-ceresin-tetrahydrofurfuryl alcohol is more stable; the stearoylbenzoylmethane can improve the thermal stability of an anti-oxidation oil film forming system, and has a remarkable synergistic effect with zinc acetylacetonate, so that the moisture-proof and heat-resistant performance of the anti-oxidation oil is greatly improved.
Further, the antioxidant consists of hydroquinone and didodecyl thiodipropionate, and the weight ratio of the hydroquinone to the didodecyl thiodipropionate is 1: 1.
By adopting the technical scheme, the hydroquinone has the effect of an antioxidant and also has the effect of a stabilizer, so that an anti-oxidation film forming system is more stable;
the didecyl thiodipropionate is an excellent auxiliary antioxidant and has the function of decomposing hydroperoxide to generate a stable structure and prevent oxidation. In addition, the didodecanediol thiodipropionate and hydroquinone can generate a synergistic effect, so that the oxidation-resistant oil has excellent bending resistance and cracking resistance after being formed into a film, and the stability of the oxidation-resistant oil is improved.
In order to achieve the second object, the present application provides the following technical solutions:
the production process of the film capacitor is characterized by comprising the following steps of:
s1, vapor deposition step
Alloy is evaporated on the front side and the back side of the base film, so that metal films are formed on the front side and the back side of the base film, and anti-oxidation oil is further coated on the metal films to obtain a metalized base film;
s2, winding step
Winding the metallized base film to obtain a capacitor core;
s3, Hot pressing Process
Shaping the capacitor core;
s4, wrapping procedure
Wrapping the shaped capacitor core with an adhesive tape;
s5, metal spraying process
Spraying gold on two ends of the capacitor core;
s6, energizing step
Electrically cleaning the capacitor core after metal spraying;
s7, electric welding process
Welding a lead wire on the energized capacitor core;
s8, potting step
And (3) filling the capacitor core welded with the lead into a plastic shell, filling epoxy resin for sealing, and curing the epoxy resin to obtain the film capacitor.
Through adopting above-mentioned technical scheme, owing to set up anti-oxidation oil on the metallic film to form the protection on the metallic film, will invade the steam and the metallic film of electric capacity core and separate, prevent the metallic film on the steam direct contact base film, delay oxidation efficiency.
Meanwhile, the path of water vapor contacting the capacitor core can be increased by sealing with the epoxy resin, so that the water vapor is delayed from directly contacting the capacitor core, the water vapor is further isolated from the capacitor core, and the overall sealing performance of the film capacitor is improved.
Therefore, the anti-oxidation oil and the epoxy resin are sealed and cooperatively used, so that the direct contact of water vapor to the metal film is greatly delayed, and the produced film capacitor meets the requirements of high temperature resistance (85 ℃) and high humidity resistance (85% R.H.).
In addition, the anti-oxidation oil only needs to be coated, the operation is simple, and the industrial production is convenient.
Further, in step S1, plasma treatment is performed before the metal film is evaporated on the base film.
Through adopting above-mentioned technical scheme, the base film is the plastics material, and its surface is comparatively smooth, makes base film surface rough after the plasma treatment, promotes the adhesive force of metal film on the substrate surface.
Further, in the step S5, the gold-sprayed surface is a zinc-tin alloy, and the ratio of tin is 50% to 70%.
By adopting the technical scheme, the metal spraying surface can form protection at two ends of the capacitor core, so that the end surface of the base film is prevented from being oxidized; in addition, the tin has low melting point, soft texture and good flexibility, and is not easy to crack; the melting point of zinc is high and the texture is hard, so the zinc-tin alloy with more tin is adopted, and the inner layer can be prevented from cracking while the strength is certain.
Further, in step S8, the epoxy resin is encapsulated at least three times, and the next epoxy resin is injected after the last epoxy resin is cured.
By adopting the technical scheme, the compactness of epoxy resin encapsulation can be improved, and the possibility of generating hollow bubbles after epoxy encapsulation is reduced.
In summary, the present application has the following beneficial effects:
firstly, because this application adopts to set up anti-oxidation oil on the metallic membrane to form the protection on the metallic membrane, will invade the steam of electric capacity core and separate, prevent the metallic membrane on the steam direct contact base film, delay oxidation efficiency, consequently can satisfy the requirement of high temperature resistant (85 ℃ C.), high humidity resistant (85% R.H.).
Secondly, it is preferred herein to use an antioxidant consisting of hydroquinone, didodecyl thiodipropionate, which is an excellent secondary antioxidant, which has the effect of decomposing hydroperoxides to produce a stable structure against oxidation. In addition, the didodecanediol thiodipropionate and hydroquinone can generate a synergistic effect, so that the oxidation-resistant oil has excellent bending resistance and cracking resistance after being formed into a film, and the stability of the oxidation-resistant oil is improved.
Thirdly, the method greatly delays the water vapor from directly contacting the metal film by the sealing and synergistic use of the anti-oxidation oil and the epoxy resin, and the produced film capacitor meets the requirements of high temperature resistance (85 ℃) and high humidity resistance (85% R.H.).
And fourthly, the method has the advantages of simple operation of coating of the oxidation-resistant oil and sealing of the epoxy resin, and convenience for industrial production.
Drawings
FIG. 1 is a flow chart of a production process provided herein.
Detailed Description
Examples
Example 1
The thin film capacitor disclosed in embodiment 1 of the present application includes a plastic case, a capacitor core installed in the plastic case, and epoxy resin encapsulated in the plastic case; the capacitor core comprises a base film, metal films are arranged on the front surface and the back surface of the base film, and anti-oxidation oil is arranged on the metal films.
The anti-oxidation oil is prepared from the following raw materials in parts by weight: 65 parts of 0# light diesel oil, 19 parts of film forming agent, 9 parts of barium petroleum sulfonate, 0.3 part of dodecyl dimethyl tertiary amine, 0.5 part of ethylene glycol and 2 parts of antioxidant.
The anti-oxidation oil is prepared by the following steps:
1) mixing 0# light diesel oil and a film-forming agent, and stirring at the temperature of 80 ℃ to obtain solution A;
2) and adding barium petroleum sulfonate, dodecyl dimethyl tertiary amine, ethylene glycol and an antioxidant into the solution A, and stirring at 60 ℃ to obtain the anti-oxidation oil.
The film forming agent is prepared by the following steps: heating coumarone resin 26 parts and ceresin 1 part to 76 ℃, and stirring for 50 min; then adding 5 parts of tetrahydrofurfuryl alcohol, 0.6 part of zinc acetylacetonate and 1 part of stearoylbenzoylmethane in turn, stirring, and cooling to normal temperature.
The antioxidant consists of hydroquinone and dilauryl thiodipropionate, and the weight ratio of the hydroquinone to the didodecyl thiodipropionate is 1: 1.
The thin film capacitor disclosed in embodiment 1 of the present application is manufactured by the following production process:
s1, vapor deposition step
Alloy is evaporated on the front side and the back side of the base film, so that metal films are formed on the front side and the back side of the base film, and anti-oxidation oil is further coated on the metal films to obtain a metalized base film; the base film material may be plastic films such as polyethylene, polypropylene, polystyrene, or polycarbonate, and in this embodiment, the base film material is polypropylene; the alloy for vapor plating is zinc-aluminum alloy;
s2, winding step
Winding the metallized base film by an automatic winding machine to obtain a capacitor core;
s3, Hot pressing Process
Shaping the capacitor core through a five-section hot press, wherein the capacitor core is vacuumized in the shaping process, the shaping temperature is 100-120 ℃, and the duration is 6-10 hours;
s4, wrapping procedure
Wrapping the shaped capacitor core with an adhesive tape by an automatic prime film wrapping machine;
s5, metal spraying process
Spraying gold on two ends of the capacitor core, wherein the gold spraying surface is made of zinc-tin alloy, and tin accounts for 60 percent;
s6, energizing step
Electrically cleaning the capacitor core after metal spraying;
s7, electric welding process
Welding a lead wire on the energized capacitor core;
s8, potting step
And (3) filling the capacitor core welded with the lead into a plastic shell, filling epoxy resin for sealing, and curing the epoxy resin to obtain the film capacitor. Specifically, epoxy resin is filled for three times, the epoxy resin is put into an oven after the epoxy resin is filled for the first time, and the drying temperature is set to be 100 ℃ for curing; then pouring a part of epoxy resin, and putting the epoxy resin into a drying oven at 100 ℃ for curing; then a part of epoxy resin is poured in, and the mixture is put into an oven with the temperature of 100 ℃ for curing.
Examples 2 to 4
Examples 2 to 4 are different from example 1 in the amount of the raw material of the antioxidant oil, and are shown in table 1.
TABLE 1 raw material amounts of antioxidant oils in examples 1 to 4
| Weight/kg | Example 1 | Example 2 | Example 3 | Example 4 |
| 0# light diesel oil | 65 | 67 | 69 | 70 |
| Film forming agent | 19 | 23 | 25 | 28 |
| Petroleum sulfonic acid barium salt | 9 | 10 | 13 | 17 |
| Dodecyl dimethyl Tertiary amine | 0.3 | 0.4 | 0.3 | 0.5 |
| Ethylene glycol | 0.5 | 0.6 | 0.7 | 1.0 |
| Antioxidant agent | 2 | 2 | 3 | 3 |
Example 5
The difference from example 1 is that the oxidation preventive oil is prepared by the following steps:
1) mixing 0# light diesel oil and a film-forming agent, and stirring at 85 ℃ to obtain solution A;
2) and adding barium petroleum sulfonate, dodecyl dimethyl tertiary amine, ethylene glycol and an antioxidant into the solution A, and stirring at 65 ℃ to obtain the anti-oxidation oil.
Example 6
The difference from example 1 is that the oxidation preventive oil is prepared by the following steps:
1) mixing 0# light diesel oil and a film-forming agent, and stirring at 90 ℃ to obtain solution A;
2) and adding barium petroleum sulfonate, dodecyl dimethyl tertiary amine, ethylene glycol and an antioxidant into the solution A, and stirring at 70 ℃ to obtain the anti-oxidation oil.
Example 7
The difference from example 1 is that the antioxidant is hydroquinone.
Examples 8 to 10
The difference from the example 1 is that the dosage of the raw materials for preparing the film forming agent is different, and the table 2 is specifically referred.
TABLE 2 preparation of film-forming agent in examples 8-10 raw material amounts
Example 11
The difference from example 1 is that in step S1, plasma treatment is not performed before the alloy is deposited on the base film.
Example 12
The difference from the example 1 is that the gold-sprayed surface is a zinc-tin alloy, and tin accounts for 50%.
Example 13
The difference from the example 1 is that the gold-sprayed surface is a zinc-tin alloy, and tin accounts for 70%.
Example 14
The difference from example 1 is that in step S8, the epoxy resin is molded by potting at one time.
Example 15
The difference from embodiment 1 is that the plastic case is made of polyester.
Comparative example
Comparative example 1
The difference from example 1 is that the metal film was not coated with the oxidation preventive oil and was directly subjected to the winding process.
Comparative example 2
By way of background, the thin film capacitor disclosed in chinese patent No. CN 106971847A.
Comparative example 3
The difference from example 1 is that no antioxidant is added.
Detection and results
The capacitors prepared in the above examples and comparative examples were subjected to high temperature (85 ℃) and high humidity (85% r.h.) tests, and the capacitors were charged with 1.1 times of their rated voltage, placed in a double 85 test chamber, operated in high temperature (85 ℃) and high humidity (85% r.h.) environments for 168 hours, 500 hours, and 1000 hours, respectively, and then the capacity before and after the operation was measured, and the capacity change was calculated. The specific test results are shown in Table 3.
Table 3 high temperature (85 ℃), high humidity (85% r.h.) tests for each example and comparative example
In summary, the following conclusions can be drawn:
by combining the embodiments 1 and 7, the didodecanediol thiodipropionate and hydroquinone can generate a synergistic effect, so that the oxidation resistant oil has excellent bending resistance and cracking resistance after being formed into a film, and the stability of the oxidation resistant oil is improved; therefore, the film capacitor has better high temperature (85 ℃) resistance and high humidity (85% R.H.) resistance.
By combining the embodiments 1 and 11, the surface of the base film is rough after the plasma treatment, and the adhesion of the metal film on the surface of the base material is improved, so that the thin film capacitor has better high temperature (85 ℃) resistance and high humidity (85% R.H.) resistance.
The preferred epoxy resins of the present application provide film capacitors with good resistance to high temperatures (85 ℃) and high humidity (85% r.h.) as seen in examples 1 and 12.
When the ratio of tin in the zinc-tin alloy in the gold-sprayed surface is 60%, the mixing ratio of zinc and tin is best, and the film capacitance has the best resistance to high temperature (85 ℃) and high humidity (85% R.H.) by combining the examples 1, 13 and 14.
By combining the embodiment 1 and the embodiment 15, the epoxy resin is poured into the film capacitor for three times, so that the filling compactness of the epoxy resin can be improved, and the possibility of generating hollow bubbles after epoxy resin is filled into the film capacitor is reduced, so that the film capacitor has better high temperature resistance (85 ℃) and high humidity resistance (85% R.H.).
With reference to the embodiment 1 and the embodiment 16, the film capacitor made of the polypropylene plastic case has better high temperature (85 ℃) and high humidity (85% r.h.) resistance than the film capacitor made of the polyester plastic case.
By combining the examples 1-16 and the comparative example 1, the oxidation resistant oil and the epoxy resin are sealed and used cooperatively, so that the direct contact of water vapor with the metal film is greatly delayed, and the film capacitor has good high temperature (85 ℃) resistance and high humidity (85% R.H.) resistance.
By combining examples 1-16 with comparative example 2, the process and the thin film capacitor made by the process provided by the application have good high temperature (85 ℃) and high humidity (85% R.H.).
By combining examples 1-16 and example 3, the antioxidant can delay the oxidation process of the antioxidant oil, thereby prolonging the service life of the antioxidant oil, further making the thin film capacitor have better high temperature (85 ℃) and high humidity (85% R.H.) resistance, and being suitable for the environment with longer high temperature (85 ℃) and high humidity (85% R.H.).
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. A film capacitor comprises a plastic shell, a capacitor core arranged in the plastic shell and epoxy resin encapsulated in the plastic shell; the capacitor core comprises a base film, and metal films are arranged on the front surface and the back surface of the base film, and the capacitor core is characterized in that anti-oxidation oil is arranged on the metal films, and the anti-oxidation oil is prepared from the following raw materials in parts by weight: 65-70 parts of 0# light diesel oil, 19-28 parts of film forming agent, 9-17 parts of barium petroleum sulfonate, 0.3-0.5 part of dodecyl dimethyl tertiary amine, 0.5-1 part of ethylene glycol and 2-3 parts of antioxidant.
2. The film capacitor of claim 1, wherein the oxidation preventing oil is prepared from the following raw materials in parts by weight: 67-70 parts of 0# light diesel oil, 23-25 parts of film-forming agent, 9-13 parts of barium petroleum sulfonate, 0.3-0.5 part of dodecyl dimethyl tertiary amine, 0.5-1 part of ethylene glycol and 2-3 parts of antioxidant.
3. The film capacitor of claim 1, wherein the oxidation preventive oil is prepared by:
1) mixing 0# light diesel oil and a film-forming agent, and stirring at the temperature of 80-90 ℃ to obtain solution A;
2) adding barium petroleum sulfonate, dodecyl dimethyl tertiary amine, ethylene glycol and an antioxidant into the solution A, and stirring at 60-70 ℃ to obtain the anti-oxidation oil.
4. A film capacitor according to claim 1, wherein said film-forming agent is prepared by: heating coumarone resin 26-30 parts and ceresin 1-2 parts to 76-83 deg.C, and stirring for 50 min; then adding 5-10 parts of tetrahydrofurfuryl alcohol, 0.6-1 part of zinc acetylacetonate and 1-2 parts of stearoylbenzoylmethane in turn, stirring, and cooling to normal temperature.
5. A film capacitor according to claim 1, wherein the antioxidant comprises hydroquinone and didodecyl thiodipropionate, and the weight ratio of hydroquinone to didodecyl thiodipropionate is 1: 1.
6. A process for producing a thin film capacitor as claimed in any one of claims 1 to 5, comprising the steps of:
s1, vapor deposition step
Evaporating to form metal films on the front and back surfaces of the base film, and further coating anti-oxidation oil on the metal films to obtain a metalized base film;
s2, winding step
Winding the metallized base film to obtain a capacitor core;
s3, Hot pressing Process
Shaping the capacitor core;
s4, wrapping procedure
Wrapping the shaped capacitor core with an adhesive tape;
s5, metal spraying process
Spraying gold on two ends of the capacitor core;
s6, energizing step
Electrically cleaning the capacitor core after metal spraying;
s7, electric welding process
Welding a lead wire on the energized capacitor core;
s8, potting step
And (3) filling the capacitor core welded with the lead into a plastic shell, filling epoxy resin for sealing, and curing the epoxy resin to obtain the film capacitor.
7. The production process for a film capacitor as claimed in claim 6, wherein in the step of S1, a plasma treatment is performed before the alloy is vapor-deposited on the base film.
8. The process for producing a film capacitor as claimed in claim 6, wherein in the step S5, the gold-sprayed surface is a zinc-tin alloy, and the ratio of tin is 50% to 70%.
9. The process for producing a film capacitor as claimed in claim 6, wherein in step S8, the epoxy resin is filled at least three times, and the next epoxy resin is filled after the last epoxy resin is cured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011091960.5A CN112366085B (en) | 2020-10-13 | 2020-10-13 | Thin film capacitor and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011091960.5A CN112366085B (en) | 2020-10-13 | 2020-10-13 | Thin film capacitor and production process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112366085A true CN112366085A (en) | 2021-02-12 |
| CN112366085B CN112366085B (en) | 2022-05-31 |
Family
ID=74507926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011091960.5A Active CN112366085B (en) | 2020-10-13 | 2020-10-13 | Thin film capacitor and production process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112366085B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593907A (en) * | 2021-07-20 | 2021-11-02 | 广东国灿电子科技有限公司 | Production process of metallized film capacitor |
| CN114334454A (en) * | 2021-12-29 | 2022-04-12 | 安徽源光电器有限公司 | Bakelite shell explosion-proof thin film starting capacitor and preparation process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408939A (en) * | 2011-10-11 | 2012-04-11 | 中国石油化工股份有限公司 | Biodegradable lubricating oil composition and preparation method thereof |
| CN103387867A (en) * | 2013-08-02 | 2013-11-13 | 武汉材料保护研究所 | Rust-proof soft film composition and preparation method thereof |
| CN103578746A (en) * | 2013-10-15 | 2014-02-12 | 铜陵其利电子材料有限公司 | Compound safe anti-explosion metallized film for capacitor |
| CN110164691A (en) * | 2019-05-06 | 2019-08-23 | 艾华新动力电容(苏州)有限公司 | A kind of high moisture-proof metalizing polypropylene thin film capacitor and its processing method |
-
2020
- 2020-10-13 CN CN202011091960.5A patent/CN112366085B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408939A (en) * | 2011-10-11 | 2012-04-11 | 中国石油化工股份有限公司 | Biodegradable lubricating oil composition and preparation method thereof |
| CN103387867A (en) * | 2013-08-02 | 2013-11-13 | 武汉材料保护研究所 | Rust-proof soft film composition and preparation method thereof |
| CN103578746A (en) * | 2013-10-15 | 2014-02-12 | 铜陵其利电子材料有限公司 | Compound safe anti-explosion metallized film for capacitor |
| CN110164691A (en) * | 2019-05-06 | 2019-08-23 | 艾华新动力电容(苏州)有限公司 | A kind of high moisture-proof metalizing polypropylene thin film capacitor and its processing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593907A (en) * | 2021-07-20 | 2021-11-02 | 广东国灿电子科技有限公司 | Production process of metallized film capacitor |
| CN114334454A (en) * | 2021-12-29 | 2022-04-12 | 安徽源光电器有限公司 | Bakelite shell explosion-proof thin film starting capacitor and preparation process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112366085B (en) | 2022-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112366085B (en) | Thin film capacitor and production process thereof | |
| CN1822262A (en) | Anti-oxidation and anti-high voltage multilayer metallized capacitor film | |
| KR20110063436A (en) | Rf tag and method for producing same | |
| JP7170213B2 (en) | Electrolytic capacitor and manufacturing method thereof | |
| CN1930647B (en) | Solid electrolytic capacitor and the use thereof | |
| JP6393026B2 (en) | Metallized film capacitors | |
| CN202615814U (en) | Metallization film for capacitor | |
| US4190878A (en) | Self-healing electrical capacitor | |
| CN104312427A (en) | Oily anti-oxidation film surface oil material for metalized capacitor | |
| CN202025647U (en) | Oil type oxidation barrier film structure for metalized capacitors | |
| CN114156089A (en) | Chip conductive polymer tantalum capacitor and preparation method thereof | |
| CN101707064A (en) | Paper-insulated copper silver alloy single side self-stuck enameled wire assembled conducting wire | |
| CN203456293U (en) | Single-surface aluminum-and-zinc metalized film with single reserved edge | |
| CN108417392A (en) | A kind of X2 safety capacitance and its preparation process inhibiting breakthrough performance based on cross-line | |
| CN109461580B (en) | Improved generation new forms of energy metallized film for condenser | |
| CN103578746A (en) | Compound safe anti-explosion metallized film for capacitor | |
| CN113077986B (en) | Metallized modified polyamide film capacitor and preparation method thereof | |
| CN2911912Y (en) | Thin film for auti-oxidation, high voltage resistance and multi-layer metallized capacitor | |
| CN201315175Y (en) | Enameled flat wire with single-side enameled self-adhesive layer | |
| US20210398751A1 (en) | Electrolytic capacitor | |
| CN209544158U (en) | A kind of capacitor metallized film | |
| CN208622609U (en) | The moisture-proof film special capacitor of THB bis- 85 | |
| CN112331480A (en) | Preparation method of multifunctional laminated aluminum electrolytic capacitor | |
| CN217426560U (en) | Low-loss high-current box-packed metallized direct-current filter capacitor for hydrogen energy vehicle | |
| WO2023074375A1 (en) | Electrolytic capacitor and method for manufacturing electrolytic capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |