CN114005678A - Metallized film capacitor, method for manufacturing same, and metallized film laminate - Google Patents
Metallized film capacitor, method for manufacturing same, and metallized film laminate Download PDFInfo
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- CN114005678A CN114005678A CN202111294663.5A CN202111294663A CN114005678A CN 114005678 A CN114005678 A CN 114005678A CN 202111294663 A CN202111294663 A CN 202111294663A CN 114005678 A CN114005678 A CN 114005678A
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- film
- metallized film
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- organic plastic
- epoxy resin
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- 239000011104 metalized film Substances 0.000 title claims abstract description 96
- 239000003990 capacitor Substances 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title claims description 24
- 239000002985 plastic film Substances 0.000 claims abstract description 38
- 229920006255 plastic film Polymers 0.000 claims abstract description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 21
- 239000010408 film Substances 0.000 claims abstract description 20
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 18
- -1 biphenyl poly (arylene ether nitrile Chemical class 0.000 claims abstract description 16
- 238000004146 energy storage Methods 0.000 claims abstract description 16
- 235000010290 biphenyl Nutrition 0.000 claims abstract description 13
- 239000004305 biphenyl Substances 0.000 claims abstract description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 13
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002904 solvent Substances 0.000 claims abstract description 13
- YOYAIZYFCNQIRF-UHFFFAOYSA-N 2,6-dichlorobenzonitrile Chemical compound ClC1=CC=CC(Cl)=C1C#N YOYAIZYFCNQIRF-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910000027 potassium carbonate Inorganic materials 0.000 claims abstract description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 36
- 239000003822 epoxy resin Substances 0.000 claims description 32
- 229920000647 polyepoxide Polymers 0.000 claims description 32
- 229920000642 polymer Polymers 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000000243 solution Substances 0.000 claims description 21
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 20
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 16
- 238000002360 preparation method Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- 230000017525 heat dissipation Effects 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 239000012286 potassium permanganate Substances 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- FFRBMBIXVSCUFS-UHFFFAOYSA-N 2,4-dinitro-1-naphthol Chemical compound C1=CC=C2C(O)=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 FFRBMBIXVSCUFS-UHFFFAOYSA-N 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 238000010907 mechanical stirring Methods 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- 230000007480 spreading Effects 0.000 claims description 4
- 238000003892 spreading Methods 0.000 claims description 4
- 238000000967 suction filtration Methods 0.000 claims description 4
- 238000010345 tape casting Methods 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 4
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 2
- QRFMXBKGNQEADL-UHFFFAOYSA-N 1,1'-biphenyl;phenol Chemical compound OC1=CC=CC=C1.OC1=CC=CC=C1.C1=CC=CC=C1C1=CC=CC=C1 QRFMXBKGNQEADL-UHFFFAOYSA-N 0.000 abstract description 4
- 238000009864 tensile test Methods 0.000 abstract 1
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009477 glass transition Effects 0.000 description 4
- 239000012299 nitrogen atmosphere Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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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
- H01G4/33—Thin- or thick-film capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
- H01G13/003—Apparatus or processes for encapsulating capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
- H01G13/006—Apparatus or processes for applying terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/08—Cooling arrangements; Heating arrangements; Ventilating arrangements
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
- H01G4/224—Housing; Encapsulation
-
- 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
- H01G4/228—Terminals
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention provides a metalized film capacitor, a manufacturing method thereof and a metalized film laminated body, which comprise a plurality of laminated metalized films, wherein each metalized film comprises an organic plastic film and an energy storage film arranged on the surface of the organic plastic film, and the organic plastic film is a biphenyl poly (arylene ether nitrile) film and comprises the following components in parts by weight: 0.1mol of biphenyl diphenol, 0.1mol of 2, 6-dichlorobenzonitrile, 0.12mol of anhydrous potassium carbonate and 180mL of auxiliary solvent. The invention is obtained by a tensile test, when the content of the graphene oxide in the metallized film is 1 wt%, the tensile strength reaches a maximum value of 118MPa, which is 15MPa higher than the 103MPa of a single organic plastic film, and a stacked body formed by stacking a plurality of metallized films has high energy storage density, good heat resistance and mechanical property and long service life.
Description
Technical Field
The present invention relates to the field of capacitor technology, and more particularly to a metallized film capacitor, a method of manufacturing the same, and a metallized film laminate.
Background
The metallized film capacitor is a capacitor manufactured by winding or laminating an organic plastic film as a dielectric and a metallized film as an electrode, and films used for the metallized film capacitor include polyethylene, polypropylene, polycarbonate, and the like, and in addition to the wound type, there are also laminated types. The polyester film medium and the polypropylene film medium are most widely applied;
the capacitor of this type of metallized film has a self-recovery function, that is, if a short circuit is caused by the weak electrical interface of the tiny part of the electrode, the electrode metal around the short circuit part will be melted and evaporated in a larger area due to the electrostatic energy or short circuit current carried by the capacitor at that time to recover the insulation, so that the capacitor can recover the function of the capacitor again.
The prior art has the following defects: the energy storage density of the internal film of the existing metallized film capacitor is small, the heat resistance and the mechanical property are poor, and the service life of the metallized film capacitor can be greatly shortened when the capacitor is used in a high-heat environment for a long time.
Disclosure of Invention
The present invention addresses the deficiencies of the prior art by providing a metallized film capacitor, a method of making the same, and a metallized film laminate.
The invention solves the technical problems through the following technical means: the metallized film laminate comprises a plurality of metallized films which are stacked, wherein each metallized film comprises an organic plastic film and an energy storage film arranged on the surface of the organic plastic film, and the metallized film is different from the prior art in that the organic plastic film is a biphenyl poly (arylene ether nitrile) film and comprises the following components in parts by weight: 0.1mol of biphenyl diphenol, 0.1mol of 2, 6-dichlorobenzonitrile, 0.12mol of anhydrous potassium carbonate and 180mL of auxiliary solvent, wherein the auxiliary solvent comprises the following components in parts by weight: 150mL of N-methylpyrrolidone and 30mL of toluene;
the preparation of the organic plastic film comprises the following steps:
s1: adding biphenol, 2, 6-dichlorobenzonitrile, anhydrous potassium carbonate, N-methylpyrrolidone and toluene into a three-neck flask with a direct-current mechanical stirrer, a thermometer, a reflux water separator and a nitrogen inlet, performing azeotropic dehydration for 2 hours under the protection of nitrogen, evaporating toluene, raising the temperature to 190 ℃, and reacting for 5 hours;
s2: after the reaction is finished, slowly pouring the polymer solution into clear water added with hydrochloric acid while the polymer solution is hot to obtain white block-shaped polymer, filtering and drying the white block-shaped polymer, and repeatedly grinding the white block-shaped polymer into powder in a grinder;
s3: putting the mixed product into a 500mL beaker, adding N-methylpyrrolidone, sealing, standing for 24h, taking out the product, washing with clear water, performing suction filtration, filtering, putting the product into a large beaker, repeatedly boiling for 3-5 times in a heating sleeve, dropwise adding hydrochloric acid in the boiling process, removing unreacted calcium carbonate impurities in the product, and finally drying the product in an oven at 80 ℃ to obtain the biphenyl poly (arylene ether nitrile) polymer;
s4: adding a biphenyl poly (arylene ether nitrile) film and N-methylpyrrolidone into a three-necked flask, stirring, heating and dissolving for 2h, clamping the three-necked flask out by a crucible, pouring the vacuumized solvent into the middle of a glass plate by adopting a tape casting method, arranging an oven, respectively keeping the temperature of 80 ℃ for 2h, the temperature of 100 ℃ for 2h, the temperature of 120 ℃ for 2h, the temperature of 160 ℃ for 2h, and the heating rate of 2 ℃/min, and obtaining the organic plastic film after the drying process is finished.
The energy storage film 32 is graphene oxide and comprises the following components in parts by weight: 2g of flake graphite, 240mL of concentrated sulfuric acid, 27mL of concentrated phosphoric acid and 12g of potassium permanganate;
the preparation method of the graphene oxide comprises the following steps:
s5: adding the crystalline flake graphite, concentrated sulfuric acid and concentrated phosphoric acid into a three-necked bottle, adding potassium permanganate during stirring, putting the mixture into a water bath at 50 ℃ for ultrasonic treatment, and keeping the mixture in reaction for 12 hours under the condition of mechanical stirring;
s6: dropwise adding 30% hydrogen peroxide until the color of the solution turns to golden yellow, and then centrifugally washing with hydrogen chloride;
s7: and finally, washing the product with deionized water, and when the pH value of the solution is neutral, filtering the product, and then drying the product in an oven at 80 ℃ to obtain the graphene oxide.
The preparation of the metallized film comprises the following steps:
s8: spreading the organic plastic film obtained in the step S4 on a glass plate, adding the graphene oxide obtained in the step S7 into a three-necked bottle filled with N-methylpyrrolidone, heating in a water bath, and ultrasonically stirring for 2 hours to obtain a mixed solution;
s9: uniformly coating the obtained mixed solution on the surface of an organic plastic film 31 by coating equipment, placing a glass plate in an oven, setting the temperature program of the oven to 80 ℃ for 2h, 100 ℃ for 2h, 120 ℃ for 2h, and the heating rate to 2 ℃/min, and naturally cooling to room temperature to obtain a metallized film;
in the nitrogen atmosphere, the phase change behavior of the metallized film is tested by DSC, the metallized film 3 with low addition amount has little influence on the motion state of a polymer molecular chain, and has no binding effect with the polymer, so that the prepared metallized film 3 keeps higher glass transition temperature;
the tensile strength of the metallized film reaches a maximum value of 118MPa when the content of graphene oxide is 1 wt%, the tensile strength is improved by 15MPa compared with 103MPa of a single organic plastic film 31, and a stacked body formed by stacking a plurality of metallized films has high energy storage density, good heat resistance and mechanical property and long service life.
The invention also provides a metalized film capacitor, which comprises epoxy resin and electric connection ends symmetrically arranged at two sides of the epoxy resin, and is different from the prior art in that a plurality of metalized films arranged at equal intervals are further arranged in the epoxy resin, a plurality of convex strips are arranged at one side of the electric connection ends, the convex strips and the metalized films are arranged in a staggered manner, a closed heat dissipation cavity is formed between the adjacent metalized films and the convex strips, a sealing sleeve is fixedly arranged in a contact area of the electric connection ends and the epoxy resin, and the sealing sleeve is used for sealing and waterproofing the contact area of the electric connection ends and the epoxy resin;
when the capacitor is used, after the power connection end is connected with electricity, the charges are transferred to the metallized film to be stored, when the accumulated charges on the metallized film generate heat excessively, heat is dissipated through the heat dissipation cavity, the heat dissipation treatment is carried out in the capacitor, and the service life of the capacitor is effectively prolonged.
The invention also provides a manufacturing method of the metallized film capacitor, which comprises the following steps:
the method comprises the following steps: the metallized films are arranged in the lower part of the formed epoxy resin, the epoxy resin is divided into an upper part and a lower part, and the metallized films after being arranged are distributed in a linear path array relative to the y axis of the epoxy resin;
step two: a sealing sleeve corresponding to the position of the electric connection end is placed at the bottom of the epoxy resin;
step three: and respectively inserting a plurality of convex strips of the customized electric connection end into gaps generated among the plurality of metallized films, then superposing the upper part and the lower part of the epoxy resin, and combining the upper part and the lower part of the epoxy resin by a thermoplastic bonding method to finish the preparation of the capacitor.
The invention has the beneficial effects that:
in the invention, the phase change behavior of the metallized film is tested by DSC in a nitrogen atmosphere, the metallized film with low addition amount has little influence on the motion state of a polymer molecular chain, and has no binding effect with the polymer, so that the prepared metallized film keeps higher glass transition temperature; the tensile strength of the metallized film reaches a maximum value of 118MPa when the content of graphene oxide is 1 wt%, the tensile strength is improved by 15MPa compared with the tensile strength of a single organic plastic film of 103MPa, a stacked body formed by stacking a plurality of metallized films has high energy storage density, good heat resistance and mechanical properties and long service life.
Drawings
FIG. 1 is a longitudinal cross-sectional view of a capacitor of the present invention;
fig. 2 is a schematic view of a partial structure of the metallized film of the present invention.
In the figure: 1. an epoxy resin; 2. connecting the electric terminal; 21. a convex strip; 3. a metallized film; 31. an organic plastic film; 32. an energy storage membrane 32; 4. a heat dissipation cavity; 5. and (5) sealing the sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Example 1
Referring to fig. 2, the metallized film laminate of the present embodiment includes a plurality of metallized films 3 stacked one on another, where the metallized film 3 is composed of an organic plastic film 31 and an energy storage film 32 disposed on a surface of the organic plastic film 31, and unlike the prior art, the organic plastic film 31 is a biphenyl poly (arylene ether nitrile) film and is composed of the following components in parts by weight: 0.1mol of biphenyl diphenol, 0.1mol of 2, 6-dichlorobenzonitrile, 0.12mol of anhydrous potassium carbonate and 180mL of auxiliary solvent, wherein the auxiliary solvent comprises the following components in parts by weight: 150mL of N-methylpyrrolidone and 30mL of toluene;
the preparation of the organic plastic film 31 includes the steps of:
s1: adding biphenol, 2, 6-dichlorobenzonitrile, anhydrous potassium carbonate, N-methylpyrrolidone and toluene into a three-neck flask with a direct-current mechanical stirrer, a thermometer, a reflux water separator and a nitrogen inlet, performing azeotropic dehydration for 2 hours under the protection of nitrogen, evaporating toluene, raising the temperature to 190 ℃, and reacting for 5 hours;
s2: after the reaction is finished, slowly pouring the polymer solution into clear water added with hydrochloric acid while the polymer solution is hot to obtain white block-shaped polymer, filtering and drying the white block-shaped polymer, and repeatedly grinding the white block-shaped polymer into powder in a grinder;
s3: putting the mixed product into a 500mL beaker, adding N-methylpyrrolidone, sealing, standing for 24h, taking out the product, washing with clear water, performing suction filtration, filtering, putting the product into a large beaker, repeatedly boiling for 3-5 times in a heating sleeve, dropwise adding hydrochloric acid in the boiling process, removing unreacted calcium carbonate impurities in the product, and finally drying the product in an oven at 80 ℃ to obtain the biphenyl poly (arylene ether nitrile) polymer;
s4: the biphenyl poly (arylene ether nitrile) film and the N-methyl pyrrolidone are added into a three-necked flask to be stirred and heated for dissolving for 2 hours, the three-necked flask is clamped out by a crucible, the vacuumized solvent is poured into the middle of a glass plate by adopting a tape casting method, an oven is arranged to respectively keep the temperature of 80 ℃ for 2 hours, the temperature of 100 ℃ for 2 hours, the temperature of 120 ℃ for 2 hours, the temperature of 160 ℃ for 2 hours and the heating rate of 2 ℃/min, and the organic plastic film 31 is obtained after the drying process is finished.
The energy storage film 32 is graphene oxide and comprises the following components in parts by weight: 2g of flake graphite, 240mL of concentrated sulfuric acid, 27mL of concentrated phosphoric acid and 12g of potassium permanganate;
the preparation method of the graphene oxide comprises the following steps:
s5: adding the crystalline flake graphite, concentrated sulfuric acid and concentrated phosphoric acid into a three-necked bottle, adding potassium permanganate during stirring, putting the mixture into a water bath at 50 ℃ for ultrasonic treatment, and keeping the mixture in reaction for 12 hours under the condition of mechanical stirring;
s6: dropwise adding 30% hydrogen peroxide until the color of the solution turns to golden yellow, and then centrifugally washing with hydrogen chloride;
s7: and finally, washing the product with deionized water, and when the pH value of the solution is neutral, filtering the product, and then drying the product in an oven at 80 ℃ to obtain the graphene oxide.
The preparation of the metallized film 3 comprises the following steps:
s8: spreading the organic plastic film 31 obtained in the step S4 on a glass plate, adding the graphene oxide obtained in the step S7 into a three-necked bottle filled with N-methylpyrrolidone, heating in a water bath, and ultrasonically stirring for 2 hours to obtain a mixed solution;
s9: uniformly coating the obtained mixed solution on the surface of an organic plastic film 31 by coating equipment, placing a glass plate in an oven, setting the temperature program of the oven to 80 ℃ for 2h, 100 ℃ for 2h, 120 ℃ for 2h, and the heating rate of 2 ℃/min, and naturally cooling to room temperature to obtain a metallized film 3;
in the nitrogen atmosphere, the phase change behavior of the metallized film 3 is tested through DSC, the metallized film 3 with low addition amount has little influence on the motion state of a polymer molecular chain, and has no binding effect with the polymer, so that the prepared metallized film 3 keeps higher glass transition temperature;
the tensile strength of the metallized film 3 reaches a maximum value of 118MPa when the content of the graphene oxide is 1 wt%, the tensile strength is improved by 15MPa compared with the 103MPa of a single organic plastic film 31, and a stacked body formed by stacking a plurality of metallized films 4 has high energy storage density, good heat resistance and mechanical properties and long service life.
Example 2
Referring to fig. 2, the metallized film laminate of the present embodiment includes a plurality of metallized films 3 stacked one on another, where the metallized film 3 is composed of an organic plastic film 31 and an energy storage film 32 disposed on a surface of the organic plastic film 31, and unlike the prior art, the organic plastic film 31 is a biphenyl poly (arylene ether nitrile) film and is composed of the following components in parts by weight: 0.12mol of biphenyl diphenol, 0.12mol of 2, 6-dichlorobenzonitrile, 0.14mol of anhydrous potassium carbonate and 200mL of auxiliary solvent, wherein the auxiliary solvent comprises the following components in parts by weight: 160mL of N-methylpyrrolidone and 40mL of toluene;
the preparation of the organic plastic film 31 includes the steps of:
s1: adding biphenol, 2, 6-dichlorobenzonitrile, anhydrous potassium carbonate, N-methylpyrrolidone and toluene into a three-neck flask with a direct-current mechanical stirrer, a thermometer, a reflux water separator and a nitrogen inlet, performing azeotropic dehydration for 2 hours under the protection of nitrogen, evaporating toluene, raising the temperature to 190 ℃, and reacting for 5 hours;
s2: after the reaction is finished, slowly pouring the polymer solution into clear water added with hydrochloric acid while the polymer solution is hot to obtain white block-shaped polymer, filtering and drying the white block-shaped polymer, and repeatedly grinding the white block-shaped polymer into powder in a grinder;
s3: putting the mixed product into a 500mL beaker, adding N-methylpyrrolidone, sealing, standing for 24h, taking out the product, washing with clear water, performing suction filtration, filtering, putting the product into a large beaker, repeatedly boiling for 3-5 times in a heating sleeve, dropwise adding hydrochloric acid in the boiling process, removing unreacted calcium carbonate impurities in the product, and finally drying the product in an oven at 80 ℃ to obtain the biphenyl poly (arylene ether nitrile) polymer;
s4: the biphenyl poly (arylene ether nitrile) film and the N-methyl pyrrolidone are added into a three-necked flask to be stirred and heated for dissolving for 2 hours, the three-necked flask is clamped out by a crucible, the vacuumized solvent is poured into the middle of a glass plate by adopting a tape casting method, an oven is arranged to respectively keep the temperature of 80 ℃ for 2 hours, the temperature of 100 ℃ for 2 hours, the temperature of 120 ℃ for 2 hours, the temperature of 160 ℃ for 2 hours and the heating rate of 2 ℃/min, and the organic plastic film 31 is obtained after the drying process is finished.
The energy storage film 32 is graphene oxide and comprises the following components in parts by weight: 4g of flake graphite, 260mL of concentrated sulfuric acid, 29mL of concentrated phosphoric acid and 14g of potassium permanganate;
the preparation method of the graphene oxide comprises the following steps:
s5: adding the crystalline flake graphite, concentrated sulfuric acid and concentrated phosphoric acid into a three-necked bottle, adding potassium permanganate during stirring, putting the mixture into a water bath at 50 ℃ for ultrasonic treatment, and keeping the mixture in reaction for 12 hours under the condition of mechanical stirring;
s6: dropwise adding 30% hydrogen peroxide until the color of the solution turns to golden yellow, and then centrifugally washing with hydrogen chloride;
s7: and finally, washing the product with deionized water, and when the pH value of the solution is neutral, filtering the product, and then drying the product in an oven at 80 ℃ to obtain the graphene oxide.
The preparation of the metallized film 3 comprises the following steps:
s8: spreading the organic plastic film 31 obtained in the step S4 on a glass plate, adding the graphene oxide obtained in the step S7 into a three-necked bottle filled with N-methylpyrrolidone, heating in a water bath, and ultrasonically stirring for 2 hours to obtain a mixed solution;
s9: uniformly coating the obtained mixed solution on the surface of an organic plastic film 31 by coating equipment, placing a glass plate in an oven, setting the temperature program of the oven to 80 ℃ for 2h, 100 ℃ for 2h, 120 ℃ for 2h, and the heating rate of 2 ℃/min, and naturally cooling to room temperature to obtain a metallized film 3;
in the nitrogen atmosphere, the phase change behavior of the metallized film 3 is tested through DSC, the metallized film 3 with low addition amount has little influence on the motion state of a polymer molecular chain, and has no binding effect with the polymer, so that the prepared metallized film 3 keeps higher glass transition temperature;
the tensile strength of the metallized film 3 reaches a maximum value of 118MPa when the content of the graphene oxide is 1 wt%, the tensile strength is improved by 15MPa compared with the 103MPa of a single organic plastic film 31, and a stacked body formed by stacking a plurality of metallized films 4 has high energy storage density, good heat resistance and mechanical properties and long service life.
Example 3
Referring to fig. 1, the metalized film capacitor of the present embodiment includes an epoxy resin 1 and electric terminals 2 symmetrically disposed on two sides of the epoxy resin 1, and is different from the prior art in that a plurality of metalized films 3 disposed at equal intervals are further disposed inside the epoxy resin 1, a plurality of protruding strips 21 are disposed on one side of the electric terminals 2, the protruding strips 21 and the metalized films 3 are disposed in a staggered manner, a sealed heat dissipation cavity 4 is formed between adjacent metalized films 3 and the protruding strips 21, a sealing sleeve 5 is fixedly disposed in a contact area between the electric terminals 2 and the epoxy resin 1, and the sealing sleeve 5 is used for sealing and waterproofing the contact area between the electric terminals 2 and the epoxy resin 1;
when the capacitor is used, after the electric connection end 2 is connected with electricity, the charges are transferred to the metallized film 3 for storage, when the accumulated charges on the metallized film 3 generate heat excessively, the heat is dissipated through the heat dissipation cavity 4, the heat dissipation treatment is carried out in the capacitor, and the service life of the capacitor is effectively prolonged.
Example 4
The method for manufacturing a metallized film capacitor in this embodiment includes the following steps:
the method comprises the following steps: a plurality of metallized films 3 are arranged in the lower part of the formed epoxy resin 1, the epoxy resin 1 is divided into an upper part and a lower part, and the metallized films 3 after being arranged are distributed in a linear path array relative to the y axis of the epoxy resin 1;
step two: a sealing sleeve 5 corresponding to the position of the electric connection end 2 is arranged at the bottom of the epoxy resin 1;
step three: and respectively inserting a plurality of convex strips 21 of the customized electric connection end 2 into gaps generated among the plurality of metallized films 3, then overlapping the upper part and the lower part of the epoxy resin 1, and combining the upper part and the lower part of the epoxy resin 1 by a thermoplastic bonding method to finish the preparation of the capacitor.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. Metallized film laminate, including a plurality of metallized film (3) of range upon range of setting, metallized film (3) comprises organic plastic film (31) and sets up energy storage membrane (32) on organic plastic film (31) surface, its characterized in that: the organic plastic film (31) is a biphenyl poly (arylene ether nitrile) film and comprises the following components in parts by weight: 0.1-0.12mol of biphenol, 0.1-0.12mol of 2, 6-dichlorobenzonitrile, 0.12-0.14mol of anhydrous potassium carbonate and 200mL of an auxiliary solvent;
the energy storage film (32) is graphene oxide and comprises the following components in parts by weight: 2-4g of flake graphite, 240-260mL of concentrated sulfuric acid, 27-29mL of concentrated phosphoric acid and 12-14g of potassium permanganate.
2. The metallized film laminate of claim 1, wherein: the auxiliary solvent comprises the following components in parts by weight: 150mL of N-methylpyrrolidone and 30mL of toluene.
3. The metalized film laminate of claim 2, wherein: the preparation of the organic plastic film (31) comprises the following steps:
s1: adding biphenol, 2, 6-dichlorobenzonitrile, anhydrous potassium carbonate, N-methylpyrrolidone and toluene into a three-neck flask with a direct-current mechanical stirrer, a thermometer, a reflux water separator and a nitrogen inlet, performing azeotropic dehydration for 2 hours under the protection of nitrogen, evaporating toluene, raising the temperature to 190 ℃, and reacting for 5 hours;
s2: after the reaction is finished, slowly pouring the polymer solution into clear water added with hydrochloric acid while the polymer solution is hot to obtain white block-shaped polymer, filtering and drying the white block-shaped polymer, and repeatedly grinding the white block-shaped polymer into powder in a grinder;
s3: putting the mixed product into a 500mL beaker, adding N-methylpyrrolidone, sealing, standing for 24h, taking out the product, washing with clear water, performing suction filtration, filtering, putting the product into a large beaker, repeatedly boiling for 3-5 times in a heating sleeve, dropwise adding hydrochloric acid in the boiling process, removing unreacted calcium carbonate impurities in the product, and finally drying the product in an oven at 80 ℃ to obtain the biphenyl poly (arylene ether nitrile) polymer;
s4: adding a biphenyl poly (arylene ether nitrile) film and N-methylpyrrolidone into a three-necked flask, stirring, heating and dissolving for 2h, clamping the three-necked flask out by a crucible, pouring the vacuumized solvent into the middle of a glass plate by adopting a tape casting method, arranging an oven for respectively keeping the temperature of 80 ℃ for 2h, the temperature of 100 ℃ for 2h, the temperature of 120 ℃ for 2h, the temperature of 160 ℃ for 2h and the heating rate of 2 ℃/min, and obtaining the organic plastic film (31) after the drying process is finished.
4. The metalized film laminate of claim 3, wherein: the preparation method of the graphene oxide comprises the following steps:
s5: adding the crystalline flake graphite, concentrated sulfuric acid and concentrated phosphoric acid into a three-necked bottle, adding potassium permanganate during stirring, putting the mixture into a water bath at 50 ℃ for ultrasonic treatment, and keeping the mixture in reaction for 12 hours under the condition of mechanical stirring;
s6: dropwise adding 30% hydrogen peroxide until the color of the solution turns to golden yellow, and then centrifugally washing with hydrogen chloride;
s7: and finally, washing the product with deionized water, and when the pH value of the solution is neutral, filtering the product, and then drying the product in an oven at 80 ℃ to obtain the graphene oxide.
5. The metalized film stack of claim 4, wherein: the preparation of the metallized film (3) comprises the following steps:
s8: spreading the organic plastic film (31) obtained in the step S4 on a glass plate, adding the graphene oxide obtained in the step S7 into a three-necked bottle filled with N-methylpyrrolidone, heating in a water bath, and ultrasonically stirring for 2 hours to obtain a mixed solution;
s9: and uniformly coating the obtained mixed solution on the surface of the organic plastic film (31) by coating equipment, placing the glass plate in an oven, setting the temperature program of the oven to 80 ℃ for 2h, 100 ℃ for 2h, 120 ℃ for 2h, and the heating rate to 2 ℃/min, and naturally cooling to room temperature to obtain the metallized film (3).
6. A metallized film capacitor, comprising: comprises epoxy resin (1) and electric connection ends (2) symmetrically arranged at two sides of the epoxy resin (1); and the metallized film (3) of claim (1), one side of the electric connection end (2) is provided with a plurality of convex strips (21), the convex strips (21) and the metallized film (3) are arranged in a staggered manner, and a closed heat dissipation cavity (4) is formed between the adjacent metallized film (3) and the convex strips (21).
7. The metallized film capacitor of claim 6, wherein: and a sealing sleeve (5) is fixedly arranged in the contact area of the electric connection end (2) and the epoxy resin (1).
8. A method of manufacturing a metallized film capacitor according to claim 6, wherein: the method comprises the following steps:
the method comprises the following steps: the metallized films (3) are arranged in the lower part of the formed epoxy resin (1), the epoxy resin (1) is divided into an upper part and a lower part, and the metallized films (3) after being arranged are distributed in a linear path array relative to the y axis of the epoxy resin (1);
step two: a sealing sleeve (5) corresponding to the position of the electric connection end (2) is arranged at the bottom of the epoxy resin (1);
step three: and (3) respectively inserting a plurality of convex strips (21) of the customized electric connection end (2) into gaps generated among the plurality of metallized films (3), then superposing the upper part and the lower part of the epoxy resin (1), and combining the upper part and the lower part of the epoxy resin (1) by a thermoplastic bonding method to finish the preparation of the capacitor.
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