CN108987618A - Lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane and preparation method thereof - Google Patents
Lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane and preparation method thereof Download PDFInfo
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- CN108987618A CN108987618A CN201810777828.6A CN201810777828A CN108987618A CN 108987618 A CN108987618 A CN 108987618A CN 201810777828 A CN201810777828 A CN 201810777828A CN 108987618 A CN108987618 A CN 108987618A
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- 239000002131 composite material Substances 0.000 title claims abstract description 51
- 239000012528 membrane Substances 0.000 title claims abstract description 51
- 239000004033 plastic Substances 0.000 title claims abstract description 50
- 229920003023 plastic Polymers 0.000 title claims abstract description 50
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000010410 layer Substances 0.000 claims abstract description 113
- 239000005030 aluminium foil Substances 0.000 claims abstract description 58
- 239000000843 powder Substances 0.000 claims abstract description 49
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000004831 Hot glue Substances 0.000 claims abstract description 32
- 239000003292 glue Substances 0.000 claims abstract description 29
- 229920005989 resin Polymers 0.000 claims abstract description 27
- 239000011347 resin Substances 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 26
- 239000011241 protective layer Substances 0.000 claims abstract description 24
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 239000002904 solvent Substances 0.000 claims abstract description 7
- -1 it stands Substances 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims description 32
- 238000001035 drying Methods 0.000 claims description 18
- 239000003822 epoxy resin Substances 0.000 claims description 17
- 229920000647 polyepoxide Polymers 0.000 claims description 17
- 239000004593 Epoxy Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 150000001336 alkenes Chemical class 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 150000008065 acid anhydrides Chemical class 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 229920001568 phenolic resin Polymers 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 229920000768 polyamine Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 2
- 238000002844 melting Methods 0.000 claims 2
- 230000008018 melting Effects 0.000 claims 2
- 229920000728 polyester Polymers 0.000 claims 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 abstract description 11
- 239000004411 aluminium Substances 0.000 abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 6
- 239000010949 copper Substances 0.000 abstract description 6
- 229910052802 copper Inorganic materials 0.000 abstract description 6
- 125000004494 ethyl ester group Chemical group 0.000 description 13
- 238000004140 cleaning Methods 0.000 description 9
- 229910002804 graphite Inorganic materials 0.000 description 8
- 239000010439 graphite Substances 0.000 description 8
- 229920002292 Nylon 6 Polymers 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- 230000005611 electricity Effects 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003678 scratch resistant effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910002567 K2S2O8 Inorganic materials 0.000 description 1
- 229920000305 Nylon 6,10 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 125000001820 oxy group Chemical group [*:1]O[*:2] 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Inorganic materials [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
-
- 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
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Laminated Bodies (AREA)
Abstract
The invention belongs to technical field of lithium ion, more particularly to a kind of lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane and preparation method thereof, the preparation method includes: the one side coating low-temperature hot melt adhesive of (1) in aluminium foil, it stands, protective layer is overlayed on low-temperature hot melt adhesive again, cold moudling；(2) 4A molecular screen primary powder is activated, it is distributed in solvent, alumina powder and graphene oxide, ultrasonic disperse is added, heat reactive resin glue and heat reactive resin curing agent are added, is coated to the another side of aluminium foil after mixing evenly to form hardened layer；(3) one layer of low-temperature hot melt adhesive is coated on hardened layer after hardening, overlays on hot sealing layer on low-temperature hot melt adhesive after standing, and cold moudling together, obtains the aluminum-plastic composite membrane at normal temperature；By the way that hardened layer is arranged in the inside of aluminium foil, hardened layer hardness with higher can effectively resist the thorn top of copper mesh and aluminium net burr, aluminium foil layer is avoided to be damaged the present invention.
Description
Technical field
The invention belongs to technical field of lithium ion, and in particular to a kind of lithium ion battery Soft Roll is multiple with puncture-resistant plastic-aluminum
Close film and preparation method thereof.
Background technique
With the fast development of lithium electricity industry, the demand to aluminum-plastic composite membrane is increasing；Meanwhile based on to high-performance lithium
The pursuit of electricity, the requirement to aluminum-plastic composite membrane are increasingly paid attention to.
In the prior art, aluminum-plastic composite membrane generally includes separation layer, aluminium foil layer and adhesive layer, and adhesive layer is generally poly- third
Alkene.The operation with hot-press sealed is vacuumized in the processing procedure of lithium ion battery, since there are copper mesh and aluminium in battery core periphery
The burr of net, during vacuumizing contraction, burr can jab inner membrance, in some instances it may even be possible to can pierce through inner membrance until aluminium foil layer, electricity
Straight-through aluminium foil layer is caused dotted corrosion by the acidic materials of in-core, is accelerated electrochemical corrosion, is changed the composition of electrolyte, seriously
When can also the leakage by aluminium foil layer eating thrown, while will also result in short circuit, battery caused to be scrapped.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation method of lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane, systems
Standby obtained aluminum-plastic composite membrane has preferable puncture-resistant ability.
To achieve the goals above, the present invention is achieved by the following scheme:
A kind of preparation method of lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane, comprising the following steps:
(1) one layer of low-temperature hot melt adhesive is uniformly coated in the one side of aluminium foil, stands 1~3min, then protective layer is overlayed on into low temperature
In hot melt adhesive, cold moudling is together at normal temperature；
(2) 4A molecular screen primary powder is activated, is then distributed it in solvent, add alumina powder and oxygen
Graphite alkene, ultrasonic disperse processing, then adds heat reactive resin glue and heat reactive resin curing agent, applies after mixing evenly
The another side of aluminium foil is layed onto form hardened layer, after the completion of coating, aluminium foil is carried out by the hot drying tunnel that temperature is 60~80 DEG C
Drying and processing；
(3) one layer of low-temperature hot melt adhesive is coated on hardened layer after hardening, and hot sealing layer overlayed on into low temperature after standing 1~3min
In hot melt adhesive, cold moudling together, obtains the aluminum-plastic composite membrane at normal temperature.
The present invention also provides a kind of lithium ion battery Soft Roll puncture-resistant aluminium being prepared using above-mentioned preparation method
Mould composite membrane.
Compared with prior art, the present invention has following technical effect that
In the present invention, by the way that hardened layer is arranged in the inside of aluminium foil, the hardened layer includes by 4A molecular screen primary powder, oxygen
Change aluminium powder, graphene oxide, heat reactive resin glue and heat reactive resin curing agent to be prepared, the hardened layer after solidification has
Higher hardness can effectively resist the thorn top of copper mesh and aluminium net burr, aluminium foil layer is avoided to be damaged.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is furture elucidated.
The present invention provides a kind of preparation methods of lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane, including following step
It is rapid:
(1) one layer of low-temperature hot melt adhesive is uniformly coated in the one side of aluminium foil, stands 1~3min, then protective layer is overlayed on into low temperature
In hot melt adhesive, cold moudling is together at normal temperature；
(2) 4A molecular screen primary powder is activated, is then distributed it in solvent, add alumina powder and oxygen
Graphite alkene, ultrasonic disperse processing, then adds heat reactive resin glue and heat reactive resin curing agent, applies after mixing evenly
The another side of aluminium foil is layed onto form hardened layer, after the completion of coating, aluminium foil is carried out by the hot drying tunnel that temperature is 60~80 DEG C
Drying and processing；
(3) one layer of low-temperature hot melt adhesive is coated on hardened layer after hardening, and hot sealing layer overlayed on into low temperature after standing 1~3min
In hot melt adhesive, cold moudling together, obtains the aluminum-plastic composite membrane at normal temperature.
In actual processing procedure, experience 3 times are generally required in battery core encapsulation and is vacuumized, 3 hot-press sealeds.But due to electricity
There is the burr of copper mesh and aluminium net on core periphery, and during vacuumizing contraction, burr can jab inner membrance, in some instances it may even be possible in piercing through
Straight-through aluminium foil layer is caused dotted corrosion up to the acidic materials in aluminium foil layer, battery core by film, accelerates electrochemical corrosion, changes electricity
The composition for solving liquid, when serious can also the leakage by aluminium foil layer eating thrown, while will also result in short circuit, battery caused to be scrapped.The present invention
In, by the way that hardened layer is arranged in the inside of aluminium foil layer, the hardened layer includes by 4A molecular screen primary powder, alumina powder, oxidation
Graphene, heat reactive resin glue and heat reactive resin curing agent are prepared, the hardness with higher of the hardened layer after solidification,
The thorn top that copper mesh and aluminium net burr can effectively be resisted, avoids aluminium foil layer from being damaged.
In the process for preparation of hardened layer raw material, 4A molecular screen primary powder is activated, improves its load capacity；
Then alumina powder and graphene oxide are distributed in the 4A molecular screen primary powder after activation, alumina powder and graphene oxide seep
It penetrates into the structure pore of 4A molecular screen primary powder；It is subsequently added into heat reactive resin glue and heat reactive resin curing agent, formation
In hardened layer, the oxygen of the functional group on heat reactive resin glue surface and the surface of graphene oxide penetrated into 4A molecular screen primary powder
Base functional group combines, and the reticular structure for the formation that interweaves is with higher resistance to the thorn top of the burr of copper mesh and aluminium net around battery core
By ability；Meanwhile the alumina powder in reticular structure is filled in certain capacity of heat transmission, lithium ion battery can be worked
It is that the heat generated timely distributes；In addition, graphene oxide is filled in heat reactive resin glue and 4A molecular screen primary powder
Between, the hardness of the hardened layer is improved on the whole, it is ensured that the hardened layer has preferable puncture-resistant ability.
The graphene oxide that heretofore described graphene oxide is well known to those skilled in the art, has no spy
Different restriction.Specifically, heretofore described graphene oxide is the oxidation stone being prepared using improved Hummers method
Black alkene.It include: by crystalline flake graphite, K2S2O8、P2O5With concentrated sulfuric acid hybrid reaction, pre-oxidation graphite is obtained, stone then will be pre-oxidized
Ink and NaNO3It is added in the concentrated sulfuric acid of pre-cooling, is slow added into KMnO4And reacted under condition of ice bath, it is then transferred into room temperature
Water-bath under reacted, then be slowly added deionized water and be transferred to 98 DEG C of water-baths and reacted；Deionized water is added again,
30%H is added after cooling2O2, obtain graphite oxide.The graphite oxide is washed to no SO with hydrochloric acid solution4 2-Detection (is used
BaCl2Detection)；Then ultrasound, centrifugation, obtained graphene oxide are as removed from the suspension not got off, sediment discards；It will
GO solution is mounted in bag filter the graphene oxide dialysed to get to after finally cleaning.After oxidation processes, graphite oxide is still
The layer structure of graphite is kept, but introduces many oxygroup functional groups on each layer of graphene monolithic, to improve this
The binding ability of graphene oxide and heat reactive resin glue.
Further, according to the present invention, in step (2), the activating treatment method of 4A molecular screen primary powder is, by 4A molecular sieve
Original powder is placed in 100~110 DEG C of baking ovens and dries to constant weight, then in 500~600 DEG C of 1~3h of roasting.
According to the present invention, the content of each raw material can select in a wider scope in the hardened layer, in order to ensure obtaining
Excellent puncture-resistant ability is obtained, the hardened layer includes that the raw material of following parts by weight is prepared: 4A molecular screen primary powder 20~35
Part, 50~65 parts of solvent, 2~8 parts of alumina powder, 3~10 parts of graphene oxide, 30~45 parts of heat reactive resin glue, thermosetting
Change 3~7 parts of resin curing agent.
According to the present invention, the thickness of the hardened layer can select in a wider scope, excellent in order to ensure obtaining
Puncture-resistant ability, the hardened layer with a thickness of 40~75 μm.
In the present invention, the heat reactive resin glue is polyurethanes, epoxy resin, crylic acid resin, organic
One of silicon class or polyester resin or at least two combination.
The heat reactive resin curing agent be epoxy curing agent, aromatic polyamine, acid anhydrides, methyl phenolic resin,
One of amino resins or at least two combination.
In the present invention, outer layer of the protective layer as aluminum-plastic composite membrane should have preferable scratch-resistant ability.The protection
Layer is that biaxial tension nylon, can with preferable dimensional stability and preferable scratch-resistant ability after biaxial tension forms
Lithium ion battery is effectively protected.The nylon is one of nylon 6, nylon66 fiber, nylon 610 and nylon 1010；
The protective layer with a thickness of 15~35 μm.
In the present invention, the solvent can choose ethyl ester, butyl ester or combinations thereof.
In the present invention, the hot sealing layer is atactic copolymerized polypropene layer, with a thickness of 30~85 μm.
In the present invention, the aluminium foil with a thickness of 10~30 μm, the two sides of aluminium foil handle and wait by surface corona from
Sub- cleaning treatment is handled with after plasma cleaning processing by surface corona, improves the adhesion property of aluminium foil surface.Specifically,
During carrying out sided corona treatment to aluminium foil surface, voltage is 5000~30000V, and air purity is ten thousand grades to 100,000 grades, corona
Treated, and aluminium foil surface can achieve 50~60 dynes.
Below by way of specific embodiment to lithium ion battery Soft Roll provided by the invention with puncture-resistant aluminum-plastic composite membrane into
Row further instruction.
Embodiment 1
A kind of preparation method of lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane, comprising the following steps:
(1) aluminium foil with a thickness of 20 μm is selected, surface corona processing and plasma cleaning processing are carried out to the two sides of aluminium foil；
One layer of low-temperature hot melt adhesive is uniformly coated in the one side of aluminium foil, stands 2min, then protective layer is overlayed on into low-temperature hot melt adhesive
On, cold moudling is together at normal temperature；
The protective layer be biaxial tension nylon 6, protective layer with a thickness of 25 μm；
(2) 4A molecular screen primary powder is placed in 110 DEG C of baking ovens and is dried to constant weight, then in 550 DEG C of roasting 2h, then by it
It is distributed in ethyl ester, adds alumina powder and graphene oxide, then ultrasonic disperse processing adds epoxy resin glue
And epoxy curing agent, it is coated to the another side of aluminium foil after mixing evenly to form the hardened layer with a thickness of 60 μm, has coated
Aluminium foil is carried out drying and processing by the hot drying tunnel that temperature is 70 DEG C by Cheng Hou；
(3) one layer of low-temperature hot melt adhesive is coated on hardened layer after hardening, and hot sealing layer overlayed on into Low Temperature Thermal after standing 2min
On melten gel, cold moudling together, obtains the aluminum-plastic composite membrane at normal temperature；
The hot sealing layer is atactic copolymerized polypropene layer, with a thickness of 60 μm；
The hardened layer includes that the raw material of following parts by weight is prepared: 28 parts of 4A molecular screen primary powder, 57 parts of ethyl ester, oxidation
6 parts of aluminium powder, 7 parts of graphene oxide, 38 parts of epoxy resin glue, 5 parts of epoxy curing agent.
Embodiment 2
Lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane is prepared as described in Example 1, unlike, hardened layer
With a thickness of 40 μm.
Embodiment 3
Lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane is prepared as described in Example 1, unlike, hardened layer
With a thickness of 75 μm.
Embodiment 4
Lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane is prepared as described in Example 1, unlike, hot sealing layer
With a thickness of 30 μm.
Embodiment 5
Lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane is prepared as described in Example 1, unlike, hot sealing layer
With a thickness of 85 μm.
Embodiment 6
A kind of preparation method of lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane, comprising the following steps:
(1) aluminium foil with a thickness of 20 μm is selected, surface corona processing and plasma cleaning processing are carried out to the two sides of aluminium foil；
One layer of low-temperature hot melt adhesive is uniformly coated in the one side of aluminium foil, stands 2min, then protective layer is overlayed on into low-temperature hot melt adhesive
On, cold moudling is together at normal temperature；
The protective layer be biaxial tension nylon 6, protective layer with a thickness of 25 μm；
(2) 4A molecular screen primary powder is placed in 110 DEG C of baking ovens and is dried to constant weight, then in 550 DEG C of roasting 2h, then by it
It is distributed in ethyl ester, adds alumina powder and graphene oxide, then ultrasonic disperse processing adds epoxy resin glue
And epoxy curing agent, it is coated to the another side of aluminium foil after mixing evenly to form the hardened layer with a thickness of 60 μm, has coated
Aluminium foil is carried out drying and processing by the hot drying tunnel that temperature is 70 DEG C by Cheng Hou；
(3) one layer of low-temperature hot melt adhesive is coated on hardened layer after hardening, and hot sealing layer overlayed on into Low Temperature Thermal after standing 2min
On melten gel, cold moudling together, obtains the aluminum-plastic composite membrane at normal temperature；
The hot sealing layer is atactic copolymerized polypropene layer, with a thickness of 60 μm；The hardened layer includes following parts by weight
Raw material be prepared: 20 parts of 4A molecular screen primary powder, 50 parts of ethyl ester, 2 parts of alumina powder, 3 parts of graphene oxide, epoxy resin
30 parts of glue, 3 parts of epoxy curing agent.
Embodiment 7
A kind of preparation method of lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane, comprising the following steps:
(1) aluminium foil with a thickness of 20 μm is selected, surface corona processing and plasma cleaning processing are carried out to the two sides of aluminium foil；
One layer of low-temperature hot melt adhesive is uniformly coated in the one side of aluminium foil, stands 2min, then protective layer is overlayed on into low-temperature hot melt adhesive
On, cold moudling is together at normal temperature；
The protective layer be biaxial tension nylon 6, protective layer with a thickness of 25 μm；
(2) 4A molecular screen primary powder is placed in 110 DEG C of baking ovens and is dried to constant weight, then in 550 DEG C of roasting 2h, then by it
It is distributed in ethyl ester, adds alumina powder and graphene oxide, then ultrasonic disperse processing adds epoxy resin glue
And epoxy curing agent, it is coated to the another side of aluminium foil after mixing evenly to form the hardened layer with a thickness of 60 μm, has coated
Aluminium foil is carried out drying and processing by the hot drying tunnel that temperature is 70 DEG C by Cheng Hou；
(3) one layer of low-temperature hot melt adhesive is coated on hardened layer after hardening, and hot sealing layer overlayed on into Low Temperature Thermal after standing 2min
On melten gel, cold moudling together, obtains the aluminum-plastic composite membrane at normal temperature；
The hot sealing layer is atactic copolymerized polypropene layer, with a thickness of 60 μm；The hardened layer includes following parts by weight
Raw material be prepared: 35 parts of 4A molecular screen primary powder, 65 parts of ethyl ester, 8 parts of alumina powder, 10 parts of graphene oxide, epoxy resin
45 parts of class glue, 7 parts of epoxy curing agent.
Reference examples 1
This reference examples prepares lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane as described in Example 1, unlike,
Hardened layer with a thickness of 30 μm.
Reference examples 2
This reference examples prepares lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane as described in Example 1, unlike,
Hardened layer with a thickness of 20 μm.
Reference examples 3
This reference examples prepares lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane as described in Example 1, unlike,
Hardened layer with a thickness of 90 μm.
Reference examples 4
This reference examples prepares lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane as described in Example 1, unlike,
Graphene oxide is not contained in the hardened layer.
Specifically, the raw material that the hardened layer includes following parts by weight is prepared: 28 parts of 4A molecular screen primary powder, ethyl ester 57
Part, 6 parts of alumina powder, 38 parts of epoxy resin glue, 5 parts of epoxy curing agent.
Lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane the preparation method comprises the following steps:
(1) aluminium foil with a thickness of 20 μm is selected, surface corona processing and plasma cleaning processing are carried out to the two sides of aluminium foil；
One layer of low-temperature hot melt adhesive is uniformly coated in the one side of aluminium foil, stands 2min, then protective layer is overlayed on into low-temperature hot melt adhesive
On, cold moudling is together at normal temperature；
The protective layer be biaxial tension nylon 6, protective layer with a thickness of 25 μm；
(2) 4A molecular screen primary powder is placed in 110 DEG C of baking ovens and is dried to constant weight, then in 550 DEG C of roasting 2h, then by it
It is distributed in ethyl ester, adds alumina powder, ultrasonic disperse processing, then adds epoxy resin glue and epoxy resin is solid
Agent is coated to the another side of aluminium foil after mixing evenly to form the hardened layer with a thickness of 60 μm after the completion of coating and lead to aluminium foil
The hot drying tunnel that excess temperature is 70 DEG C carries out drying and processing；
(3) one layer of low-temperature hot melt adhesive is coated on hardened layer after hardening, and hot sealing layer overlayed on into Low Temperature Thermal after standing 2min
On melten gel, cold moudling together, obtains the aluminum-plastic composite membrane at normal temperature；
The hot sealing layer is atactic copolymerized polypropene layer, with a thickness of 60 μm.
Reference examples 5
This reference examples prepares lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane as described in Example 1, unlike,
Alumina powder is not contained in the hardened layer.
Specifically, the raw material that the hardened layer includes following parts by weight is prepared: 28 parts of 4A molecular screen primary powder, ethyl ester 57
Part, 7 parts of graphene oxide, 38 parts of epoxy resin glue, 5 parts of epoxy curing agent.
Lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane the preparation method comprises the following steps:
(1) aluminium foil with a thickness of 20 μm is selected, surface corona processing and plasma cleaning processing are carried out to the two sides of aluminium foil；
One layer of low-temperature hot melt adhesive is uniformly coated in the one side of aluminium foil, stands 2min, then protective layer is overlayed on into low-temperature hot melt adhesive
On, cold moudling is together at normal temperature；
The protective layer be biaxial tension nylon 6, protective layer with a thickness of 25 μm；
(2) 4A molecular screen primary powder is placed in 110 DEG C of baking ovens and is dried to constant weight, then in 550 DEG C of roasting 2h, then by it
It is distributed in ethyl ester, adds graphene oxide, then ultrasonic disperse processing adds epoxy resin glue and epoxy resin
Curing agent is coated to the another side of aluminium foil to form the hardened layer with a thickness of 60 μm, after the completion of coating, by aluminium foil after mixing evenly
Drying and processing is carried out by the hot drying tunnel that temperature is 70 DEG C；
(3) one layer of low-temperature hot melt adhesive is coated on hardened layer after hardening, and hot sealing layer overlayed on into Low Temperature Thermal after standing 2min
On melten gel, cold moudling together, obtains the aluminum-plastic composite membrane at normal temperature；
The hot sealing layer is atactic copolymerized polypropene layer, with a thickness of 60 μm.
Reference examples 6
This reference examples prepares lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane as described in Example 1, unlike,
4A molecular screen primary powder, alumina powder and graphene oxide are not contained in the hardened layer, only containing epoxy resin glue and
Epoxy curing agent.
Specifically, the raw material that the hardened layer includes following parts by weight is prepared: 57 parts of ethyl ester, epoxy resin glue
38 parts, 5 parts of epoxy curing agent.
Lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane the preparation method comprises the following steps:
(1) aluminium foil with a thickness of 20 μm is selected, surface corona processing and plasma cleaning processing are carried out to the two sides of aluminium foil；
One layer of low-temperature hot melt adhesive is uniformly coated in the one side of aluminium foil, stands 2min, then protective layer is overlayed on into low-temperature hot melt adhesive
On, cold moudling is together at normal temperature；
The protective layer be biaxial tension nylon 6, protective layer with a thickness of 25 μm；
(2) epoxy resin glue is distributed in ethyl ester, epoxy curing agent is added, is coated to aluminium after mixing evenly
The another side of foil is to form the hardened layer with a thickness of 60 μm, after the completion of coating, by aluminium foil by temperature be 70 DEG C hot drying tunnel into
Row drying and processing；
(3) one layer of low-temperature hot melt adhesive is coated on hardened layer after hardening, and hot sealing layer overlayed on into Low Temperature Thermal after standing 2min
On melten gel, cold moudling together, obtains the aluminum-plastic composite membrane at normal temperature；
The hot sealing layer is atactic copolymerized polypropene layer, with a thickness of 60 μm.
The performance for the aluminum-plastic composite membrane being prepared in test above-described embodiment, and test result is recorded in table 1.
1, the needle point that diameter is 1.0mm, radius of curvature is 0.5mm is mounted on to UTM (the omnipotent test derived from Instron
Machine) in, at 25 DEG C, its intensity is measured while piercing through aluminum-plastic composite membrane with the speed of 120mm/min；
2, using device identical with the measurement for above-mentioned puncture strength.Pin hole and sample holder are put into and maintained
In 120 DEG C of furnace, its intensity is measured while piercing through aluminum-plastic composite membrane with the speed of 120mm/min；For equilibrium temperature, by sample
Product measure puncture strength after the temperature is kept at least 3 minutes.
3, the thermal coefficient for the aluminum-plastic composite membrane that test above-described embodiment is prepared.
Table 1:
It can be seen that lithium ion battery Soft Roll aluminum-plastic composite membrane provided by the invention with excellent in conjunction with above-mentioned data
Puncture-resistant ability, and have the preferable capacity of heat transmission, can prevent lithium battery in use heat concentration cause thing
Therefore.
Basic principles and main features and the features of the present invention of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement is both fallen in the range of claimed invention.The scope of protection of present invention is by appended claims
And its equivalent thereof.
Claims (7)
1. a kind of preparation method of lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane, it is characterised in that: the following steps are included:
(1) one layer of low-temperature hot melt adhesive is uniformly coated in the one side of aluminium foil, stands 1~3min, then protective layer is overlayed on into low-temperature heat melting
On glue, cold moudling is together at normal temperature；
(2) 4A molecular screen primary powder is activated, is then distributed it in solvent, add alumina powder and oxidation stone
Black alkene, ultrasonic disperse processing, then adds heat reactive resin glue and heat reactive resin curing agent, is coated to after mixing evenly
The another side of aluminium foil is to form hardened layer, and after the completion of coating, aluminium foil is dried by the hot drying tunnel that temperature is 60~80 DEG C
Processing；
(3) one layer of low-temperature hot melt adhesive is coated on hardened layer after hardening, and hot sealing layer overlayed on into low-temperature heat melting after standing 1~3min
On glue, cold moudling together, obtains the aluminum-plastic composite membrane at normal temperature.
2. the preparation method of lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane according to claim 1, feature exist
In: in step (2), the activating treatment method of 4A molecular screen primary powder is that 4A molecular screen primary powder is placed in 100~110 DEG C of baking ovens
Drying is to constant weight, then in 500~600 DEG C of 1~3h of roasting.
3. the preparation method of lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane according to claim 1, feature exist
In: the hardened layer includes that the raw material of following parts by weight is prepared: 20~35 parts of 4A molecular screen primary powder, 50~65 parts of solvent,
2~8 parts of alumina powder, 3~10 parts of graphene oxide, 30~45 parts of heat reactive resin glue, heat reactive resin curing agent 3~7
Part.
4. the preparation method of lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane according to claim 1, feature exist
In: the hardened layer with a thickness of 40~75 μm.
5. the preparation method of lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane according to claim 1, feature exist
In: the heat reactive resin glue is polyurethanes, epoxy resin, crylic acid resin, organic silicon or polyesters tree
One of rouge or at least two combination.
6. the preparation method of lithium ion battery Soft Roll puncture-resistant aluminum-plastic composite membrane according to claim 1, feature exist
In: the heat reactive resin curing agent is epoxy curing agent, aromatic polyamine, acid anhydrides, methyl phenolic resin, amino tree
One of rouge or at least two combination.
7. a kind of lithium ion battery Soft Roll that the preparation method as described in claim 1~6 any one is prepared is used endurable
Pierce aluminum-plastic composite membrane.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117183518A (en) * | 2023-09-01 | 2023-12-08 | 青岛伟东包装有限公司 | High-ductility puncture-resistant plastic film and preparation method thereof |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117183518A (en) * | 2023-09-01 | 2023-12-08 | 青岛伟东包装有限公司 | High-ductility puncture-resistant plastic film and preparation method thereof |
| CN117183518B (en) * | 2023-09-01 | 2024-05-28 | 青岛伟东包装有限公司 | High-ductility puncture-resistant plastic film and preparation method thereof |
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