CN109494317A - A kind of aluminum plastic film of electrolyte resistance and preparation method thereof - Google Patents
A kind of aluminum plastic film of electrolyte resistance and preparation method thereof Download PDFInfo
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- CN109494317A CN109494317A CN201811081070.9A CN201811081070A CN109494317A CN 109494317 A CN109494317 A CN 109494317A CN 201811081070 A CN201811081070 A CN 201811081070A CN 109494317 A CN109494317 A CN 109494317A
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- layer
- plastic film
- aluminum plastic
- electrolyte resistance
- aluminium foil
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 101
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 82
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 239000002985 plastic film Substances 0.000 title claims abstract description 78
- 229920006255 plastic film Polymers 0.000 title claims abstract description 78
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000010410 layer Substances 0.000 claims abstract description 217
- 239000005030 aluminium foil Substances 0.000 claims abstract description 79
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 32
- 239000007800 oxidant agent Substances 0.000 claims abstract description 32
- 230000001590 oxidative effect Effects 0.000 claims abstract description 32
- 239000011241 protective layer Substances 0.000 claims abstract description 29
- 239000003292 glue Substances 0.000 claims abstract description 17
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 8
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 35
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 35
- 229920005672 polyolefin resin Polymers 0.000 claims description 31
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 28
- 229920005989 resin Polymers 0.000 claims description 26
- 239000011347 resin Substances 0.000 claims description 26
- -1 polypropylene Polymers 0.000 claims description 22
- 229920000098 polyolefin Polymers 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 20
- 239000004743 Polypropylene Substances 0.000 claims description 16
- 229920001155 polypropylene Polymers 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- 239000012752 auxiliary agent Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 11
- 238000007766 curtain coating Methods 0.000 claims description 10
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 10
- 239000002518 antifoaming agent Substances 0.000 claims description 7
- 239000004952 Polyamide Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical compound CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 claims description 3
- 150000001845 chromium compounds Chemical class 0.000 claims description 3
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 229910001290 LiPF6 Inorganic materials 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims description 2
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 238000006460 hydrolysis reaction Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims 2
- 150000008064 anhydrides Chemical class 0.000 claims 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims 2
- 239000011976 maleic acid Substances 0.000 claims 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims 2
- 150000001336 alkenes Chemical class 0.000 claims 1
- 150000001412 amines Chemical class 0.000 claims 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 1
- 239000005025 cast polypropylene Substances 0.000 abstract description 17
- 150000001875 compounds Chemical class 0.000 abstract description 9
- 239000000853 adhesive Substances 0.000 description 14
- 230000001070 adhesive effect Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 12
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 229910001416 lithium ion Inorganic materials 0.000 description 6
- 230000000655 anti-hydrolysis Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000007761 roller coating Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 238000010345 tape casting Methods 0.000 description 2
- 238000003856 thermoforming Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000013032 Hydrocarbon resin Substances 0.000 description 1
- 229910013872 LiPF Inorganic materials 0.000 description 1
- 101150058243 Lipf gene Proteins 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 206010016766 flatulence Diseases 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229920006270 hydrocarbon resin Polymers 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001535 kindling effect Effects 0.000 description 1
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 150000004291 polyenes Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000009966 trimming 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/088—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention provides a kind of aluminum plastic film and preparation method thereof of electrolyte resistance; the aluminum plastic film includes aluminium foil layer, electrolyte resistance layer, hot sealing layer and protective layer; wherein; the electrolyte resistance layer is formed in the first surface of the aluminium foil layer; the hot sealing layer is incorporated into the electrolyte resistance layer surface by the first gluing oxidant layer, and the protective layer is incorporated into the second surface of the aluminium foil layer by the second gluing oxidant layer.In aluminum plastic film of the invention, on the inside of aluminium foil layer after the coated glue layer of addition electrolyte resistance, it is compound with hot sealing layer (cast polypropylene), increase the electrolyte resistance performance of aluminum plastic film, and keeping the composite force between aluminium foil layer and hot sealing layer in aluminum plastic film bigger, the safety of aluminum plastic film soft bag lithium ionic cell is higher.
Description
Technical field
The invention belongs to lithium ion battery packaging film technical fields, are related to a kind of corrosion-resistant, good mechanical performance plastic-aluminum
Film and preparation method thereof.
Background technique
Flexible packing lithium ion battery has become a widely used rechargeable battery, mainly by anode, cathode, every
Film, electrolyte, collector and flexible package aluminum plastic film composition.Because the effective component chemical property in lithium ion battery is very active,
The infiltration of oxygen and steam will lead to kindling and even explode in air, thus the inside of outer packing aluminum plastic film should have certain resistance to electricity
Solve fluidity and excellent barrier property.
Currently, flexible package aluminum plastic film is mainly used as external protection, aluminium foil as intermediate insulating layer, curtain coating by nylon layer (PA)
Polypropylene layer (CPP) is used as interior hot sealing layer, is combined between every two layers by resin adhesive.However there are still in aluminium foil
Between barrier layer and the curtain coating CPP hot sealing layer problem that falls off by the corrosion of electrolyte for a long time, being corroded so as to cause aluminium foil layer causes
A series of problems, such as battery short circuit, flatulence.
Therefore, a kind of aluminum plastic film and preparation method thereof of electrolyte resistance how is provided, to improve aluminum plastic film Soft Roll lithium ion
The safety of battery becomes those skilled in the art's important technological problems urgently to be resolved.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of aluminum plastic film of electrolyte resistance and
Preparation method leads to aluminum plastic film Soft Roll lithium intolerant to electrolytic corrosion, poor mechanical property for solving aluminum plastic film in the prior art
The problem of ion battery performance security reduces.
In order to achieve the above objects and other related objects, the present invention provides a kind of aluminum plastic film of electrolyte resistance, comprising:
Aluminium foil layer has the first surface and second surface being oppositely arranged；
Electrolyte resistance layer is formed in the first surface of the aluminium foil layer；
Hot sealing layer is incorporated into the electrolyte resistance layer surface by the first gluing oxidant layer；
Protective layer is incorporated into the second surface of the aluminium foil layer by the second gluing oxidant layer.
Optionally, the material of the electrolyte resistance layer includes acid-modified polyolefin resin.
Optionally, the acid-modified polyolefin resin includes maleic anhydride modified polyolefin resin and acrylic acid modified polyene
Hydrocarbon resin.
Optionally, in the electrolyte resistance layer, maleic anhydride modified polyolefin resin and acrylic acid modified polyolefins resin
Quality than range be 1:4-4:1.
Optionally, the maleic anhydride modified polyolefin resin includes that maleic anhydride modified polypropylene and maleic anhydride change
One or both of the polyolefin elastomer of property.
Optionally, the acrylic acid modified polyolefins resin includes that acrylic acid modified polyolefin elastomer, acrylic acid change
One of polypropylene and acrylic acid modified polyethylene of property are a variety of.
Optionally, the material of the hot sealing layer includes cast polypropylene.
Optionally, the material of the protective layer includes polyamide.
Optionally, the aluminum plastic film is used for packaging lithium battery, wherein the protective layer is made as surface layer, the hot sealing layer
For internal layer.
Optionally, the electrolyte that the lithium battery uses includes LiPF6, and the solvent in the electrolyte includes carbonic acid second
Enester, propene carbonate and dimethyl carbonate.
Optionally, the thickness range of the electrolyte resistance layer is 1-8 μm.
Optionally, the thickness range of the aluminium foil layer is 20-60 μm, and the thickness range of the protective layer is 20-80 μm, institute
The thickness range for stating hot sealing layer is 30-80 μm, and the thickness range of the first gluing oxidant layer is 2-10 μm, second adhesive
The thickness range of layer is 2-10 μm.
The present invention also provides a kind of preparation methods of aluminum plastic film, comprising the following steps:
An aluminium foil layer is provided, the aluminium foil layer has the first surface and second surface being oppositely arranged；
Electrolyte resistance layer is formed in the first surface of the aluminium foil layer；
Based on the first gluing oxidant layer, by the hot sealing layer electrolyte resistance layer surface；
Based on the second gluing oxidant layer, by composite dry process by second table of the protective layer aluminium foil layer
Face.
Optionally, form the electrolyte resistance layer in the first surface of the aluminium foil layer the following steps are included:
Prepare the glue comprising acid-modified polyolefin resin；
By the glue-coating in the first surface of the aluminium foil layer.
Optionally, prepare the glue the following steps are included:
Maleic anhydride modified polyolefin resin is dissolved in the first solvent, and the first auxiliary agent is added and stirs evenly, obtains the
One solution；
Acrylic acid modified polyolefins resin is dissolved in the second solvent, and the second auxiliary agent is added and stirs evenly, obtains second
Solution；
First solution is mixed with the second solution, and removes the insoluble matter, obtains the glue.
Optionally, in the glue, the maleic anhydride modified polyolefin resin and the acrylic acid modified polyolefins tree
The quality of rouge is 1:4-4:1 than range.
Optionally, the maleic anhydride modified polyolefin resin includes that maleic anhydride modified polypropylene and maleic anhydride change
One or both of the polyolefin elastomer of property, the acrylic acid modified polyolefins resin includes acrylic acid modified polyolefin
One of elastomer, acrylic acid modified polypropylene and acrylic acid modified polyethylene are a variety of, first auxiliary agent and institute
Stating the second auxiliary agent includes curing agent, tackifying resin, anti-hydrolysis agent and defoaming agent.
Optionally, coating temperature range is 75-100 DEG C.
Optionally, electrolyte resistance layer is formed before the first surface of the aluminium foil layer, further comprising the steps of:
Processing is passivated using two sides of the passivating solution comprising chromium compound to the aluminium foil layer.
Optionally, the material of the hot sealing layer includes cast polypropylene, and the material of the protective layer includes polyamide.
As described above, the aluminum plastic film of electrolyte resistance of the invention, has the advantages that in aluminum plastic film of the invention,
It is compound with hot sealing layer (cast polypropylene) on the inside of aluminium foil layer after the coated glue layer of addition electrolyte resistance, increase the resistance to of aluminum plastic film
Electrolyte property, and keep the composite force between the aluminium foil layer and hot sealing layer in aluminum plastic film bigger, aluminum plastic film soft bag lithium ionic cell
Safety it is higher.
Detailed description of the invention
Fig. 1 is shown as the film layer structure figure of the aluminum plastic film of electrolyte resistance of the invention.
Fig. 2 is shown as the process flow chart of the preparation method of aluminum plastic film of the invention.
Component label instructions
1 protective layer
2 second gluing oxidant layer
3 aluminium foil layers
4 electrolyte resistance layers
5 first gluing oxidant layer
6 hot sealing layers
S1~S4 step
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
Fig. 1 is please referred to Fig. 2.It should be noted that diagram provided in the present embodiment only illustrates this in a schematic way
The basic conception of invention, only shown in schema then with related component in the present invention rather than package count when according to actual implementation
Mesh, shape and size are drawn, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its
Assembly layout kenel may also be increasingly complex.
Embodiment one
The present invention provides a kind of aluminum plastic film of electrolyte resistance, referring to Fig. 1, it is shown as the film layer structure figure of the aluminum plastic film,
Including protective layer 1, the second gluing oxidant layer 2, aluminium foil layer 3, electrolyte resistance layer 4, the first gluing oxidant layer 5 and hot sealing layer 6, wherein institute
Stating aluminium foil layer 3 has the first surface and second surface being oppositely arranged, and the electrolyte resistance layer 4 is formed in the aluminium foil layer 3
First surface, the hot sealing layer 6 are incorporated into 4 surface of electrolyte resistance layer, the protective layer by the first gluing oxidant layer 5
1 is incorporated into the second surface of the aluminium foil layer 3 by the second gluing oxidant layer 2.
Specifically, the thickness range of the aluminium foil layer 3 is 20-60 μm.In the present embodiment, the aluminium foil layer 3 selects thickness
For 40 μm of soft aluminium foil, and the first surface of the aluminium foil layer 3 and the second surface of the aluminium foil layer 3 pass through
Chemical conversion Passivation Treatment.
Specifically, the thickness range of the electrolyte resistance layer is 1-8 μm.In the present embodiment, the thickness of the electrolyte resistance layer 4
Preferably 2 μm of degree.
Specifically, the material of the electrolyte resistance layer 4 includes acid-modified polyolefin resin.Acid-modified polyolefin resin passes through
The mode of chemical graft improves the grafting degree and active group of polyolefin resin, and the electrolyte resistance layer 4 and institute can be enhanced
State the adhesion strength between aluminium foil layer 3, the first gluing oxidant layer 5, and the electrolyte resistance layer 4 more resistant to electrolyte swelling and
Corrosion.
As an example, the acid-modified polyolefin resin includes maleic anhydride modified polyolefin resin and acrylic acid modified poly-
Olefin resin, wherein the maleic anhydride modified polyolefin resin includes that maleic anhydride modified polypropylene and maleic anhydride change
One or both of the polyolefin elastomer of property, the acrylic acid modified polyolefins resin includes acrylic acid modified polyolefin
One of elastomer, acrylic acid modified polypropylene and acrylic acid modified polyethylene are a variety of.
As an example, in the electrolyte resistance layer, maleic anhydride modified polyolefin resin and acrylic acid modified polyolefins tree
The quality of rouge is 1:4-4:1 than range.
Specifically, the material of the hot sealing layer 6 includes cast polypropylene (CPP).Curtain coating membrane material production technology refers to resin
It through extruder fusion plastification, is squeezed out by slit head die orifice, is tightly attached to melt on cooling roller after sizing, by drawing,
Trimming such as batches at the membrane material made of processes.Claimed with the membrane material for processing plastic thermoforming packing articles that " the tape casting " produces
" the tape casting " thermoforming membrane material.
As an example, the hot sealing layer 6 is compound to described by adhesive (ultimately forming the first gluing oxidant layer 5)
The surface of electrolyte resistance layer 4.
Specifically, the thickness range of the hot sealing layer 6 is 30-80 μm, the thickness range of the first gluing oxidant layer 5 is 2-
10μm.In the present embodiment, the thickness of the hot sealing layer 6 is preferably 40 μm, and the thickness of the first gluing oxidant layer 5 is preferably 2 μm.
Specifically, the material of the protective layer 1 includes polyamide (PA, alternatively referred to as nylon), the thickness of the protective layer 1
Range is 20-80 μm, and the thickness range of the second gluing oxidant layer 2 is 2-10 μm.
As an example, the protective layer 1 is also to use dry method by adhesive (ultimately forming the second gluing oxidant layer 2)
The second surface of the combination process aluminium foil layer 3, in the present embodiment, the thickness of the protective layer 1 is preferably 30 μm, institute
The thickness for stating the second gluing oxidant layer 2 is preferably 4 μm.
Aluminum plastic film of the invention can be used for packing lithium ion battery, wherein the protective layer 1 is used as surface layer, the aluminium
Layers of foil 3 is used as middle layer, and the hot sealing layer 6 is used as internal layer.
In aluminum plastic film of the invention, (flowed due to being added to the coated glue layer of electrolyte resistance on the inside of aluminium foil layer, and with hot sealing layer
Prolong polypropylene) dry laminating, the electrolyte resistance performance of aluminum plastic film is increased, and make between the aluminium foil layer and hot sealing layer in aluminum plastic film
Composite force it is bigger, the safety of aluminum plastic film soft bag lithium ionic cell is higher.
Embodiment two
The present invention also provides a kind of preparation methods of aluminum plastic film, referring to Fig. 2, it is shown as the process flow chart of this method,
The following steps are included:
S1: providing an aluminium foil layer, and the aluminium foil layer has the first surface and second surface being oppositely arranged；
S2: electrolyte resistance layer is formed in the first surface of the aluminium foil layer；
S3: it is based on the first gluing oxidant layer, by the hot sealing layer electrolyte resistance layer surface；
S4: being based on the second gluing oxidant layer, by composite dry process by described the of the protective layer aluminium foil layer
Two surfaces.
As an example, forming electrolyte resistance layer before the first surface of the aluminium foil layer, closed using comprising chromaking
The passivating solution of object is passivated processing to the two sides of the aluminium foil layer.
As an example, the Passivation Treatment the following steps are included:
(1) aluminium foil layer is washed by alkalilye degreasing；
(2) by the front and back sides roller coating acrylic resin of the aluminium foil layer after alkalilye degreasing is washed and include chromium compound
Passivating solution, wet coating amount be 2.3-3.5g/m2；
(3) aluminium foil layer is passed through to 180~210 DEG C of oven drying again.
As an example, the electrolyte resistance layer 4 is to be formed in the aluminium foil layer 3 by rubbing method in the step S2
The first surface.It should be pointed out that it is bright face that usually aluminium foil, which has one side, another side is mute face, described in the present embodiment
First surface is the bright face of the aluminium foil layer 3.
As an example, the glue comprising acid-modified polyolefin resin is prepared first, then by the glue-coating in described
The first surface of aluminium foil layer is to form the electrolyte resistance layer 4.
As an example, prepare the glue the following steps are included:
Step (1): maleic anhydride modified polyolefin resin is dissolved in the first solvent, and the first auxiliary agent heating stirring is added
Uniformly, the first solution is obtained.
As an example, the maleic anhydride modified polyolefin resin include but is not limited to maleic anhydride modified polypropylene and
One or both of maleic anhydride modified polyolefin elastomer
As an example, first solvent includes but is not limited to the mixed liquor of hexahydrotoluene and ethyl acetate, ratio is
8:2.First auxiliary agent includes curing agent, tackifying resin, anti-hydrolysis agent and defoaming agent etc., wherein the tackifying resin includes
But it is not limited to styrene series thermoplastic elastomer (SBS), one isoprene of styrene, one styrene (SIS) elastomer and polyolefin
One or both of elastomer mixture, tackifying resin can play the cohesive force and adhesion strength, raising for improving adhesive
Heat resistance, the effect for adjusting setting time；The anti-hydrolysis agent includes but is not limited to carbodiimides, and anti-hydrolysis agent mainly passes through
The degradation of self-catalysis hydrolysis is prevented to improve the service life of adhesive；The curing agent includes but is not limited to epoxy resin
The mixture of one of system or several polymer, the curing agent can be used to accelerate the reaction speed of adhesive, enhancing
The adhesion strength of adhesive；The defoaming agent includes but is not limited to epoxies defoaming agent, and defoaming agent can be eliminated in adhesive
Deleterious bubbles, so that adhesive is more stable.
Step (2): acrylic acid modified polyolefins resin is dissolved in the second solvent, and it is equal that the second auxiliary agent heating stirring is added
It is even, obtain the second solution.
As an example, the acrylic acid modified polyolefins resin includes acrylic acid modified polyolefin elastomer, acrylic acid
One of modified polypropylene and acrylic acid modified polyethylene are a variety of.
As an example, second solvent includes but is not limited to dimethylbenzene.Second auxiliary agent includes curing agent, thickening tree
Rouge, anti-hydrolysis agent and defoaming agent etc..
Step (3): first solution being mixed in proportion with the second solution, and removes the insoluble matter, is obtained described
Glue.The glue is as coating fluid, wherein overall solid content is 15%-25%.
As an example, in the glue, the maleic anhydride modified polyolefin resin and the acrylic acid modified polyolefins
The quality of resin is 1:4-4:1 than range.
As an example, using roller coating technology, under 75-100 DEG C of low temperature drying state, by the glue-coating described in
The first surface of aluminium foil layer 3, coating weight 2-4g/m2, with a thickness of 1-8 μm.It should be pointed out that being obtained when coating weight is very few
The adhesion strength and electrolyte resistance performance of the electrolyte resistance layer arrived are lower, and when coating weight is excessive, it also will affect coating layer thickness
And coating uniform ground degree, and when crawling, the electrolyte resistance performance of obtained electrolyte resistance layer also can be lower.The present embodiment
In, the thickness of the electrolyte resistance layer 4 is preferably 2 μm.
As an example, can be used, dry laminating, thermal method are compound or other complex methods are compound to described by the hot sealing layer
Electrolyte resistance layer surface, while using combination machine based on dry operation by the second surface of the protective layer aluminium foil layer.This reality
It applies in example, the material of the hot sealing layer includes cast polypropylene, and the material of the protective layer includes polyamide.It may be noted that
It is that the execution sequence of above-mentioned steps S3 step S4 can convert.
Embodiment three
Aluminum plastic film described in embodiment one and conventional aluminum plastic film are carried out the stripping of electrolyte before and after the processing by the present embodiment
From strength test, wherein the composition of conventional aluminum plastic film from outside to inside is followed successively by PA protective layer, outermost resin adhesive, passivating solution
Processed aluminium foil layer (AL), inner layer resin gluing oxidant layer and curtain coating CPP hot sealing layer, the inside of PA protective layer and aluminium foil layer it is outer
Side is by outermost resin adhesive, and compound using dry process, the inside of aluminium foil layer and the outside of curtain coating CPP hot sealing layer are in
Layer resin adhesive is compound.In the routine aluminum plastic film, the PA protective layer with a thickness of 30 μm, the outermost resin adhesive
With a thickness of 4 μm, the aluminium foil layer with a thickness of 40 μm, the inner layer resin gluing oxidant layer with a thickness of 4 μm, the curtain coating CPP
Hot sealing layer with a thickness of 40 μm.
Testing process includes:
(1) LiPF that concentration is 1mol/L is provided6Electrolyte, solvent burden ratio are ethylene carbonate (EC): propene carbonate
(PC): dimethyl carbonate (DMC)=1:1:1 (volume ratio).
(2) sample for being 15mm compound good plastic-aluminum film production width, is immersed in 85 DEG C of electrolyte 14 days.
(3) after not impregnated with universal tensile tester test aluminum plastic film and impregnated electrolyte, aluminium foil layer and curtain coating CPP heat-sealing
The T-type peel strength of layer, test speed 300mm/min.
Test result is as shown in table 1:
Table 1
| Sample number | Sample explanation | Peel strength (N/15mm) |
| 1 | The aluminum plastic film of the present invention of electrolyte is not impregnated | 17.6 |
| 2 | Aluminum plastic film of the present invention after impregnating electrolyte | 15.7 |
| 3 | The conventional aluminum plastic film of electrolyte is not impregnated | 12.3 |
| 4 | Conventional aluminum plastic film after impregnating electrolyte | 8.7 |
By the data in table 1 it is found that the peel strength variation of aluminum plastic film of the invention before and after impregnating electrolyte is little, only
Reduce 1.9N, and the peel strength of conventional aluminum plastic film changes greatly relatively, reduces 3.6N, and the present invention does not impregnate electrolyte
The peel strength of aluminum plastic film be much higher than conventional aluminum plastic film, reached 17.6N.
Acid modification polyolefin-coated layer can be improved impregnate electrolyte before the peel strength of aluminium foil layer and CPP hot sealing layer be
Because the coating fluid and aluminium foil, hose lining have higher adhesion strength, therefore increase between aluminium foil and CPP containing hose lining
Combined strength bination further improves peel strength.
Acid modification polyolefin-coated layer can be improved impregnate electrolyte after aluminium foil layer and CPP hot sealing layer peel strength it is same
Sample is because the adhesion strength of the electrolyte resistance layer and aluminium foil, hose lining is big, and more resistant to the swelling and corrosion of electrolyte, therefore can
Improve the peel strength after electrolyte impregnates.
From the foregoing, it will be observed that on the inside of the aluminium foil layer of aluminum plastic film of the present invention after the glue-line of coating electrolyte resistance, it is multiple with curtain coating CPP dry method
It closes, increases the performance of aluminum plastic film electrolyte resistance, and keep the composite force of aluminium foil layer and curtain coating CPP interlayer in aluminum plastic film bigger, power
It is prominent to learn performance.Using the aluminum plastic film of electrolyte resistance of the invention, the higher soft bag lithium ionic cell of safety can be obtained, effectively
Improve prospect of the application of the aluminum plastic film flexible package in lithium ion battery.
In conclusion the aluminum plastic film of electrolyte resistance of the invention includes aluminium foil layer, electrolyte resistance layer, hot sealing layer and protection
Layer, wherein the electrolyte resistance layer is formed in the first surface of the aluminium foil layer, and the material of the electrolyte resistance layer changes including acid
Property polyolefin resin, the hot sealing layer is incorporated into the electrolyte resistance layer surface by the first gluing oxidant layer, and the protective layer is logical
Cross the second surface that the second gluing oxidant layer is incorporated into the aluminium foil layer.In aluminum plastic film of the invention, resistance to electricity is added on the inside of aluminium foil layer
After the coated glue layer for solving liquid, then it is compound with hot sealing layer (cast polypropylene), the electrolyte resistance performance of aluminum plastic film is increased, and make aluminium
The composite force between aluminium foil layer and hot sealing layer in plastic film is bigger, and the safety of aluminum plastic film soft bag lithium ionic cell is higher.So
The present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (20)
1. a kind of aluminum plastic film of electrolyte resistance characterized by comprising
Aluminium foil layer has the first surface and second surface being oppositely arranged；
Electrolyte resistance layer is formed in the first surface of the aluminium foil layer；
Hot sealing layer is incorporated into the electrolyte resistance layer surface by the first gluing oxidant layer；
Protective layer is incorporated into the second surface of the aluminium foil layer by the second gluing oxidant layer.
2. the aluminum plastic film of electrolyte resistance according to claim 1, it is characterised in that: the material of the electrolyte resistance layer includes
Acid-modified polyolefin resin.
3. the aluminum plastic film of electrolyte resistance according to claim 2, it is characterised in that: the acid-modified polyolefin resin includes
Maleic anhydride modified polyolefin resin and acrylic acid modified polyolefins resin.
4. the aluminum plastic film of electrolyte resistance according to claim 3, it is characterised in that: in the electrolyte resistance layer, maleic acid
The quality of anhydride modified polyolefin resin and acrylic acid modified polyolefins resin is 1:4-4:1 than range.
5. the aluminum plastic film of electrolyte resistance according to claim 3, it is characterised in that: the maleic anhydride modified polyolefin tree
Rouge includes one or both of maleic anhydride modified polypropylene and maleic anhydride modified polyolefin elastomer.
6. the aluminum plastic film of electrolyte resistance according to claim 3, it is characterised in that: the acrylic acid modified polyolefins resin
Including one of acrylic acid modified polyolefin elastomer, acrylic acid modified polypropylene and acrylic acid modified polyethylene or
It is a variety of.
7. the aluminum plastic film of electrolyte resistance according to claim 1, it is characterised in that: the material of the hot sealing layer includes curtain coating
Polypropylene.
8. the aluminum plastic film of electrolyte resistance according to claim 1, it is characterised in that: the material of the protective layer includes polyamides
Amine.
9. the aluminum plastic film of electrolyte resistance according to claim 1, it is characterised in that: the aluminum plastic film is for packing lithium electricity
Pond, wherein the protective layer is as surface layer, and the hot sealing layer is as internal layer.
10. the aluminum plastic film of electrolyte resistance according to claim 9, it is characterised in that: the electrolyte that the lithium battery uses
Include LiPF6, and the solvent in the electrolyte includes ethylene carbonate, propene carbonate and dimethyl carbonate.
11. the aluminum plastic film of electrolyte resistance according to claim 1, it is characterised in that: the thickness model of the electrolyte resistance layer
Enclose is 1-8 μm.
12. the aluminum plastic film of electrolyte resistance according to claim 1, it is characterised in that: the thickness range of the aluminium foil layer is
20-60 μm, the thickness range of the protective layer is 20-80 μm, and the thickness range of the hot sealing layer is 30-80 μm, described first
The thickness range of gluing oxidant layer is 2-10 μm, and the thickness range of the second gluing oxidant layer is 2-10 μm.
13. a kind of preparation method of aluminum plastic film, which comprises the following steps:
An aluminium foil layer is provided, the aluminium foil layer has the first surface and second surface being oppositely arranged；
Electrolyte resistance layer is formed in the first surface of the aluminium foil layer；
Based on the first gluing oxidant layer, by the hot sealing layer electrolyte resistance layer surface；
Based on the second gluing oxidant layer, by composite dry process by the second surface of the protective layer aluminium foil layer.
14. the preparation method of aluminum plastic film according to claim 13, which is characterized in that form the electrolyte resistance layer in institute
State the first surface of aluminium foil layer the following steps are included:
Prepare the glue comprising acid-modified polyolefin resin；
By the glue-coating in the first surface of the aluminium foil layer.
15. the preparation method of aluminum plastic film according to claim 14, which is characterized in that preparing the glue includes following step
It is rapid:
Maleic anhydride modified polyolefin resin is dissolved in the first solvent, and the first auxiliary agent is added and stirs evenly, it is molten to obtain first
Liquid；
Acrylic acid modified polyolefins resin is dissolved in the second solvent, and the second auxiliary agent is added and stirs evenly, obtains the second solution；
First solution is mixed with the second solution, and removes the insoluble matter, obtains the glue.
16. the preparation method of aluminum plastic film according to claim 15, it is characterised in that: in the glue, the maleic acid
The quality of anhydride modified polyolefin resin and the acrylic acid modified polyolefins resin is 1:4-4:1 than range.
17. the preparation method of aluminum plastic film according to claim 15, it is characterised in that: the maleic anhydride modified polyolefin
Resin includes one or both of maleic anhydride modified polypropylene and maleic anhydride modified polyolefin elastomer, and described third
Olefin(e) acid modified polyolefin resin includes acrylic acid modified polyolefin elastomer, acrylic acid modified polypropylene and acrylic acid modified
One of polyethylene or a variety of, first auxiliary agent and second auxiliary agent include curing agent, tackifying resin, resistant to hydrolysis
Agent and defoaming agent.
18. the preparation method of aluminum plastic film according to claim 14, it is characterised in that: coating temperature range is 75-100
℃。
19. the preparation method of aluminum plastic film according to claim 13, which is characterized in that form electrolyte resistance layer in the aluminium
It is further comprising the steps of before the first surface of layers of foil:
Processing is passivated using two sides of the passivating solution comprising chromium compound to the aluminium foil layer.
20. the preparation method of aluminum plastic film according to claim 13, it is characterised in that: the material of the hot sealing layer includes stream
Prolong polypropylene, the material of the protective layer includes polyamide.
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