CN105034489A - High-barrier type acid-resisting and stress-resisting aluminum plastic film for lithium battery - Google Patents
High-barrier type acid-resisting and stress-resisting aluminum plastic film for lithium battery Download PDFInfo
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- CN105034489A CN105034489A CN201510409353.1A CN201510409353A CN105034489A CN 105034489 A CN105034489 A CN 105034489A CN 201510409353 A CN201510409353 A CN 201510409353A CN 105034489 A CN105034489 A CN 105034489A
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- plastic film
- aluminum plastic
- aluminium
- lithium battery
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000002985 plastic film Substances 0.000 title claims abstract description 32
- 229920006255 plastic film Polymers 0.000 title claims abstract description 32
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 16
- 239000010410 layer Substances 0.000 claims abstract description 67
- 239000004743 Polypropylene Substances 0.000 claims abstract description 46
- 229920001155 polypropylene Polymers 0.000 claims abstract description 46
- -1 polypropylene Polymers 0.000 claims abstract description 37
- 229920001577 copolymer Polymers 0.000 claims abstract description 26
- 239000004952 Polyamide Substances 0.000 claims abstract description 25
- 229920002647 polyamide Polymers 0.000 claims abstract description 25
- 230000001070 adhesive effect Effects 0.000 claims abstract description 20
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 19
- 239000012790 adhesive layer Substances 0.000 claims abstract description 13
- 239000005030 aluminium foil Substances 0.000 claims description 62
- 239000000853 adhesive Substances 0.000 claims description 18
- 125000004122 cyclic group Chemical group 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 239000011256 inorganic filler Substances 0.000 claims description 8
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 8
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 4
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 4
- 239000010456 wollastonite Substances 0.000 claims description 4
- 229910052882 wollastonite Inorganic materials 0.000 claims description 4
- 229910001334 3003 aluminium alloy Inorganic materials 0.000 claims description 3
- 229910001344 5052 aluminium alloy Inorganic materials 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 3
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 claims description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 239000005543 nano-size silicon particle Substances 0.000 claims description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 claims description 3
- 229920006380 polyphenylene oxide Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 239000011118 polyvinyl acetate Substances 0.000 claims description 3
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 125000003011 styrenyl group Chemical class [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 3
- 238000007669 thermal treatment Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 abstract description 7
- 230000004888 barrier function Effects 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 239000011888 foil Substances 0.000 abstract 2
- 229920000098 polyolefin Polymers 0.000 abstract 2
- 239000003792 electrolyte Substances 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000032953 Device battery issue Diseases 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 description 1
- 229910000020 calcium bicarbonate Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007719 peel strength test Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- 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
- 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
- B32B2250/00—Layers arrangement
- B32B2250/04—4 layers
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/31—Heat sealable
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/73—Hydrophobic
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/752—Corrosion inhibitor
-
- 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
- B32B2457/00—Electrical equipment
- B32B2457/10—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)
- Laminated Bodies (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to a high-barrier type acid-resisting and stress-resisting aluminum plastic film for a lithium battery. The high-barrier type acid-resisting and stress-resisting aluminum plastic film for the lithium battery comprises a cycloolefin copolymer and polypropylene co-extrusion layer, a modified polyolefin thermoplastic elastomer layer, an aluminum foil, an adhesive layer and a modified polypropylene and polyamide co-extrusion layer, wherein the aluminum plastic film is composed of the cycloolefin copolymer and polypropylene co-extrusion layer, the modified polyolefin thermoplastic elastomer layer, the aluminum foil, the adhesive layer and the modified polypropylene and polyamide co-extrusion layer which are sequentially laminated from inside to outside. The aluminum plastic film provided by the invention has excellent barrier property, heat sealability, malleability and corrosion resistance and strong adhesive property.
Description
Technical field
The present invention relates to battery packaging material field, particularly the acidproof proof stress aluminum plastic film of a kind of lithium battery high-barrier type.
Background technology
Aluminum plastic film is the peripheral most important material of flexible packing lithium ion battery; it can protect the stability of inside battery electrolyte and electrode; avoid the factors such as environment steam, chemicals, ultraviolet, oxidizing gas on the impact of electrolyte inside and electrode, make lithium ion battery have longer service life.
The yield rate of the quality direct relation lithium ion battery of lithium ion battery peripheral material, it requires very strict to the barrier such as moisture and oxygen, the infiltration of ambient moisture can affect the composition of inside battery electrolyte, electrolyte decomposition is made to go out severe corrosive hydrofluoric acid, corrosion failure peripheral packaging aluminium plastic film material conversely, thus cause battery failure; Also have the gas such as oxygen to enter battery fluid and can cause electrolyte generation chemical oxidation, the problem such as swelling, cause ballooning, equally also can cause the problems such as battery reduction service life; In addition, aluminum plastic film is one of composition of lithium battery, it also needs excellent cold stamping shaped performance, puncture-resistant performance and insulate heat sealing property, and how effectively to improve the barrier of lithium ion battery packaging applications aluminum plastic film, processing forming and chemical stability be very pay close attention in industry and the technical problem of emphasis research and development.
Summary of the invention
For solving the problems of the technologies described above, the invention provides the acidproof proof stress aluminum plastic film of a kind of lithium battery high-barrier type, this aluminum plastic film has excellent barrier property, heat sealability, ductility, decay resistance and strong adhesive property.
Technical scheme of the present invention is: the acidproof proof stress aluminum plastic film of a kind of lithium battery high-barrier type, comprise cyclic olefine copolymer and polypropylene coextruded layer, modified polyolefinic thermoplastic elastomer layer, aluminium foil layer, adhesive layer, modified polypropene and polyamide coextruded layer, described aluminum plastic film stacks gradually described cyclic olefine copolymer and polypropylene coextruded layer, modified polyolefinic thermoplastic elastomer layer, aluminium foil layer, adhesive layer, modified polypropene and polyamide coextruded layer from inside to outside.
As a preferred embodiment of the present invention, in described cyclic olefine copolymer and polypropylene coextruded layer, cyclic olefine copolymer and polypropylene mixed proportion are 3/97 ~ 10/90; The thickness of described cyclic olefine copolymer and polypropylene coextruded layer is 20 ~ 60 μm.
As a preferred embodiment of the present invention, one or more combinations in the material of described modified polyolefinic thermoplastic elastomer layer is maleic anhydride, polypropylene, polyethylene, polystyrene, polyvinyl chloride, GMA, PETG, polybutylene terephthalate, polyamide, non-crystalline polyphenylene oxide, Merlon, ethylene-butene copolymer are middle spring block linear three embedding copolymers, styrene series thermoplastic elastomer and inorganic filler particle carry out modification in any proportion; Described inorganic filler particle is one or more combinations in nanometer height territory, nano silicon, talcum powder, wollastonite, nano-calcium carbonate, nano calcium oxide, nano aluminium oxide; The thickness of described modified polyolefinic thermoplastic elastomer layer is 20 ~ 60 μm.
As a preferred embodiment of the present invention, the material of described aluminium foil layer is one or more combinations in 8011 aluminium foils, 1235 aluminium foils, 1060 aluminium foils, 8021 aluminium foils, 8079 aluminium foils, 1145 aluminium foils, 1050 aluminium foils, 1100 aluminium foils, 1100 aluminium foils, 3003 aluminium foils, 3105 aluminium foils, 3005 aluminium foils, 5052 aluminium foils; Described aluminium foil layer thickness is 30-60 μm.
As a preferred embodiment of the present invention, the aluminium foil thermal treatment state of described aluminium foil layer is the one in O state, 12 states or ultra-soft state.
As a preferred embodiment of the present invention, the material of described adhesive layer is one or more combinations in monocomponent polyurethane adhesive, bi-component polyurethane adhesive, polyacrylic resin adhesive, Polyvinyl acetate adhesive, urea-formaldehyde resin adhesive, epoxyn.
As a preferred embodiment of the present invention, in described modified polypropene and polyamide coextruded layer, the mixed proportion of modified polypropene and polyamide is 1/99 ~ 1; The thickness of described modified polypropene and polyamide coextruded layer is 30 ~ 60 μm.
After adopting technique scheme, the invention has the beneficial effects as follows:
First, this aluminum plastic film internal layer is cyclic olefine copolymer and polypropylene co-extrusion thing, improves that inner layer material blocks water, acid-proof performance; Secondly, hot melt adhesive film selects modified polyolefinic thermoplastic elastomer to substitute, and can improve the blocking water of this layer, anticorrosive property; Outer modified polypropene and the polyamide coextruded layer of adopting effectively can avoid the original water suction of polypropylene and the original cohesive force of polyamide problem low, easy to crack.This aluminum plastic film ectonexine is coextruded layer, and internal layer and aluminium foil adopt hot melt complex technique, and outer and aluminium foil adopts the dry multiple glue complex technique of adhesive bonds, manufactures simple, bonds firmly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein, 1 is cyclic olefine copolymer and polypropylene coextruded layer; 2 is modified polyolefinic thermoplastic elastomer layer; 3 is aluminium foil layer; 4 is adhesive layer; 5 is modified polypropene and polyamide coextruded layer.
Detailed description of the invention
In order to make objects and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, the invention provides the acidproof proof stress aluminum plastic film of a kind of lithium battery high-barrier type, comprise cyclic olefine copolymer and polypropylene coextruded layer 1, modified polyolefinic thermoplastic elastomer layer 2, aluminium foil layer 3, adhesive layer 4, modified polypropene and polyamide coextruded layer 5, described aluminum plastic film stacks gradually described cyclic olefine copolymer and polypropylene coextruded layer 1, modified polyolefinic thermoplastic elastomer layer 2, aluminium foil layer 3, adhesive layer 4, modified polypropene and polyamide coextruded layer 5 from inside to outside.
In described cyclic olefine copolymer and polypropylene coextruded layer 1, cyclic olefine copolymer can mix in any proportion with polypropylene, and preferable range is 3/97 ~ 10/90.The thickness of described cyclic olefine copolymer and polypropylene coextruded layer 1 is 20 ~ 60 μm.
The material of described modified polyolefinic thermoplastic elastomer layer 2 is maleic anhydride, polypropylene, polyethylene, polystyrene, polyvinyl chloride, GMA, PETG, polybutylene terephthalate, polyamide, non-crystalline polyphenylene oxide, Merlon, ethylene-butene copolymer is the linear three embedding copolymers of middle spring block, one or more combinations in styrene series thermoplastic elastomer and inorganic filler carry out modification in any proportion, described inorganic filler particle is one or more combinations in nanometer height territory, nano silicon, talcum powder, wollastonite, nano-calcium carbonate, nano calcium oxide, nano aluminium oxide.The thickness of described modified polyolefinic thermoplastic elastomer layer 2 is 20 ~ 60 μm.
One or more combinations in optional 8011 aluminium foils of material of described aluminium foil layer 3,1235 aluminium foils, 1060 aluminium foils, 8021 aluminium foils, 8079 aluminium foils, 1145 aluminium foils, 1050 aluminium foils, 1100 aluminium foils, 1100 aluminium foils, 3003 aluminium foils, 3105 aluminium foils, 3005 aluminium foils, 5052 aluminium foils.The aluminium foil thermal treatment state of described aluminium foil layer 3 is the one in O state, 12 states or ultra-soft state, and performance requirement hot strength (vertical, horizontal) is all greater than 60MPa, and elongation at break (vertical, horizontal) is all greater than 3%.Described aluminium foil layer 3 thickness is preferably 30 ~ 60 μm.
The material of described adhesive layer 4 is one or more combinations in monocomponent polyurethane adhesive, bi-component polyurethane adhesive, polyacrylic resin adhesive, Polyvinyl acetate adhesive, urea-formaldehyde resin adhesive, epoxyn.The bonding mode of adhesive can adopt-OH to carry out compoiste adhering with the mode of-NCO crosslinking curing.Adhesive layer 4 thickness is preferably 2 ~ 7 μm.
Described modified polypropene can mix with polyamide in any proportion with modified polypropene in polyamide coextruded layer 5, and preferable range is between 1/99 ~ 1.The thickness of described modified polypropene and polyamide coextruded layer 5 is preferably 30 ~ 60 μm.Polypropylene modification can select inorganic filler, maleic anhydride, acrylic acid, EP rubbers, EPDM, POE, EVA, SBS, LDPE, polyamide, polyurethane, polyacrylamide, polyacrylate, polyester, polyvinylidene chloride, polyvinyl alcohol, glass fibre, one or more combinations in polytetrafluoroethylene (PTFE), the wherein optional light or calcium bicarbonate of inorganic filler in modified polypropene, talcum powder, mica powder, high territory, wollastonite, blanc fixe, aluminium hydroxide, magnesium hydroxide, carbon black, metal dust, graphite, molybdenum bisuphide, one or more combinations in borax.
The manufacturing technology steps of this aluminum plastic film is as follows:
1. cyclic olefine copolymer and between polypropylene co-extrusion thing and aluminium foil applying modified TPO carry out hot melt compound, form aluminum plastic film semi-finished product;
2. the outer surface of aluminum plastic film semi-finished product aluminium foil and between modified polypropene and polyamide co-extrusion thing adhesive coating carry out dry multiple glue compound, drying, form aluminum plastic film just finished product.
3. the first finished product of pair this aluminum plastic film carries out slaking, forms finished product.
Product of the present invention reaches following index through mensuration:
1. peel strength test: electrolyte soaks 85 DEG C, 7 days, and interlaminar strength is more than or equal to 8N/15mm;
2. permeability resistance test: soak 14 days in the water of 60 DEG C, without layering, weight change is less than 0.05 gram.
3. use production scene mould molding, survey form depth with slide calliper rule, maximum scouring depth is that two-sided punching is dark.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. the acidproof proof stress aluminum plastic film of lithium battery high-barrier type, it is characterized in that, comprise cyclic olefine copolymer and polypropylene coextruded layer, modified polyolefinic thermoplastic elastomer layer, aluminium foil layer, adhesive layer, modified polypropene and polyamide coextruded layer, described aluminum plastic film stacks gradually described cyclic olefine copolymer and polypropylene coextruded layer, modified polyolefinic thermoplastic elastomer layer, aluminium foil layer, adhesive layer, modified polypropene and polyamide coextruded layer from inside to outside.
2. according to the acidproof proof stress aluminum plastic film of lithium battery high-barrier type described in claim 1, it is characterized in that, in described cyclic olefine copolymer and polypropylene coextruded layer, cyclic olefine copolymer and polypropylene mixed proportion are 3/97 ~ 10/90; The thickness of described cyclic olefine copolymer and polypropylene coextruded layer is 20-60 μm.
3. according to the acidproof proof stress aluminum plastic film of lithium battery high-barrier type described in claim 1, it is characterized in that, the material of described modified polyolefinic thermoplastic elastomer layer is maleic anhydride, polypropylene, polyethylene, polystyrene, polyvinyl chloride, GMA, PETG, polybutylene terephthalate, polyamide, non-crystalline polyphenylene oxide, Merlon, ethylene-butene copolymer is the linear three embedding copolymers of middle spring block, one or more combinations in styrene series thermoplastic elastomer and inorganic filler particle carry out modification in any proportion, described inorganic filler particle is one or more combinations in nanometer height territory, nano silicon, talcum powder, wollastonite, nano-calcium carbonate, nano calcium oxide, nano aluminium oxide, the thickness of described modified polyolefinic thermoplastic elastomer layer is 20 ~ 60 μm.
4. according to the acidproof proof stress aluminum plastic film of lithium battery high-barrier type described in claim 1, it is characterized in that, the material of described aluminium foil layer is one or more combinations in 8011 aluminium foils, 1235 aluminium foils, 1060 aluminium foils, 8021 aluminium foils, 8079 aluminium foils, 1145 aluminium foils, 1050 aluminium foils, 1100 aluminium foils, 1100 aluminium foils, 3003 aluminium foils, 3105 aluminium foils, 3005 aluminium foils, 5052 aluminium foils; Described aluminium foil layer thickness is 30-60 μm.
5. according to the acidproof proof stress aluminum plastic film of lithium battery high-barrier type described in claim 4, it is characterized in that, the aluminium foil thermal treatment state of described aluminium foil layer is the one in O state, 12 states or ultra-soft state.
6. according to the acidproof proof stress aluminum plastic film of lithium battery high-barrier type described in claim 1, it is characterized in that, the material of described adhesive layer is one or more combinations in monocomponent polyurethane adhesive, bi-component polyurethane adhesive, polyacrylic resin adhesive, Polyvinyl acetate adhesive, urea-formaldehyde resin adhesive, epoxyn.
7. according to the acidproof proof stress aluminum plastic film of lithium battery high-barrier type described in claim 1, it is characterized in that, in described modified polypropene and polyamide coextruded layer, the mixed proportion of modified polypropene and polyamide is 1/99 ~ 1; The thickness of described modified polypropene and polyamide coextruded layer is 30 ~ 60 μm.
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