CN112318965A - Composite aluminum-plastic film, preparation method and application thereof - Google Patents
Composite aluminum-plastic film, preparation method and application thereof Download PDFInfo
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- CN112318965A CN112318965A CN202011162837.8A CN202011162837A CN112318965A CN 112318965 A CN112318965 A CN 112318965A CN 202011162837 A CN202011162837 A CN 202011162837A CN 112318965 A CN112318965 A CN 112318965A
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- plastic film
- flame retardant
- fiber
- composite aluminum
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- 239000002985 plastic film Substances 0.000 title claims abstract description 57
- 229920006255 plastic film Polymers 0.000 title claims abstract description 57
- 239000002131 composite material Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000003063 flame retardant Substances 0.000 claims abstract description 82
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000000835 fiber Substances 0.000 claims abstract description 50
- 239000010410 layer Substances 0.000 claims abstract description 47
- 229920001778 nylon Polymers 0.000 claims abstract description 38
- 239000011241 protective layer Substances 0.000 claims abstract description 31
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000012793 heat-sealing layer Substances 0.000 claims abstract description 6
- 229920000642 polymer Polymers 0.000 claims abstract description 5
- -1 alkyl phosphate Chemical compound 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 21
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 18
- 229910019142 PO4 Inorganic materials 0.000 claims description 10
- 239000010452 phosphate Substances 0.000 claims description 10
- ICXAPFWGVRTEKV-UHFFFAOYSA-N 2-[4-(1,3-benzoxazol-2-yl)phenyl]-1,3-benzoxazole Chemical compound C1=CC=C2OC(C3=CC=C(C=C3)C=3OC4=CC=CC=C4N=3)=NC2=C1 ICXAPFWGVRTEKV-UHFFFAOYSA-N 0.000 claims description 9
- 239000004693 Polybenzimidazole Substances 0.000 claims description 9
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 9
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 9
- 238000002791 soaking Methods 0.000 claims description 9
- 229920001155 polypropylene Polymers 0.000 claims description 8
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 claims description 5
- 238000005470 impregnation Methods 0.000 claims description 4
- 239000011357 graphitized carbon fiber Substances 0.000 claims description 3
- WRDNCFQZLUCIRH-UHFFFAOYSA-N 4-(7-azabicyclo[2.2.1]hepta-1,3,5-triene-7-carbonyl)benzamide Chemical compound C1=CC(C(=O)N)=CC=C1C(=O)N1C2=CC=C1C=C2 WRDNCFQZLUCIRH-UHFFFAOYSA-N 0.000 claims description 2
- 229920006376 polybenzimidazole fiber Polymers 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- YTVQIZRDLKWECQ-UHFFFAOYSA-N 2-benzoylcyclohexan-1-one Chemical group C=1C=CC=CC=1C(=O)C1CCCCC1=O YTVQIZRDLKWECQ-UHFFFAOYSA-N 0.000 description 8
- 229920002480 polybenzimidazole Polymers 0.000 description 7
- 238000010030 laminating Methods 0.000 description 6
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 238000004026 adhesive bonding Methods 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- 238000005254 chromizing Methods 0.000 description 4
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 150000008282 halocarbons Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 3
- LIAWCKFOFPPVGF-UHFFFAOYSA-N 2-ethyladamantane Chemical compound C1C(C2)CC3CC1C(CC)C2C3 LIAWCKFOFPPVGF-UHFFFAOYSA-N 0.000 description 2
- VEORPZCZECFIRK-UHFFFAOYSA-N 3,3',5,5'-tetrabromobisphenol A Chemical compound C=1C(Br)=C(O)C(Br)=CC=1C(C)(C)C1=CC(Br)=C(O)C(Br)=C1 VEORPZCZECFIRK-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- XNNQFQFUQLJSQT-UHFFFAOYSA-N bromo(trichloro)methane Chemical compound ClC(Cl)(Cl)Br XNNQFQFUQLJSQT-UHFFFAOYSA-N 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920000927 poly(p-phenylene benzobisoxazole) Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 2
- NDRKXFLZSRHAJE-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-(2,3,4-tribromophenyl)benzene Chemical group BrC1=C(Br)C(Br)=CC=C1C1=C(Br)C(Br)=C(Br)C(Br)=C1Br NDRKXFLZSRHAJE-UHFFFAOYSA-N 0.000 description 1
- FIAXCDIQXHJNIX-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-ethylbenzene Chemical compound CCC1=C(Br)C(Br)=C(Br)C(Br)=C1Br FIAXCDIQXHJNIX-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- SDEZULDUSXEXOS-UHFFFAOYSA-N P(=O)([O-])([O-])[O-].OC[PH3+].OC[PH3+].OC[PH3+] Chemical compound P(=O)([O-])([O-])[O-].OC[PH3+].OC[PH3+].OC[PH3+] SDEZULDUSXEXOS-UHFFFAOYSA-N 0.000 description 1
- GTVWRXDRKAHEAD-UHFFFAOYSA-N Tris(2-ethylhexyl) phosphate Chemical compound CCCCC(CC)COP(=O)(OCC(CC)CCCC)OCC(CC)CCCC GTVWRXDRKAHEAD-UHFFFAOYSA-N 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- FMWLUWPQPKEARP-UHFFFAOYSA-N bromodichloromethane Chemical compound ClC(Cl)Br FMWLUWPQPKEARP-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- FJBFPHVGVWTDIP-UHFFFAOYSA-N dibromomethane Chemical compound BrCBr FJBFPHVGVWTDIP-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- VFNOXQPPJXXRNB-UHFFFAOYSA-N hydroxymethyl dihydrogen phosphate Chemical compound OCOP(O)(O)=O VFNOXQPPJXXRNB-UHFFFAOYSA-N 0.000 description 1
- AIRPJJGSWHWBKS-UHFFFAOYSA-N hydroxymethylphosphanium;chloride Chemical compound [Cl-].OC[PH3+] AIRPJJGSWHWBKS-UHFFFAOYSA-N 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920003366 poly(p-phenylene terephthalamide) Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- FAUOSXUSCVJWAY-UHFFFAOYSA-N tetrakis(hydroxymethyl)phosphanium Chemical class OC[P+](CO)(CO)CO FAUOSXUSCVJWAY-UHFFFAOYSA-N 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/024—Woven fabric
-
- 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
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
-
- 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
-
- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- 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
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/08—Impregnating
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
-
- 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
- B32B2307/306—Resistant to heat
-
- 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
- B32B2439/00—Containers; Receptacles
- B32B2439/40—Closed containers
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Reinforced Plastic Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a composite aluminum-plastic film, a preparation method and application thereof. The composite aluminum-plastic film comprises a protective layer, a metal layer and a polymer heat sealing layer which are sequentially arranged; the protective layer is obtained by blending nylon fibers treated by the flame retardant and high-temperature resistant fibers. The fibers in the protective layer selected by the invention have the advantages of high strength, high heat resistance, no combustion and no shrinkage in flame and the like; and the flame retardant can further improve the flame retardance of the protective layer, so that the safety of the soft package battery is improved. The composite aluminum-plastic film disclosed by the invention can help to construct a soft package battery with high safety and high strength.
Description
Technical Field
The invention belongs to the technical field of batteries, and particularly relates to a composite aluminum-plastic film, and a preparation method and application thereof.
Background
Common commercial lithium ion batteries can be mainly classified into three types according to their packaging forms: cylindrical steel, square steel (aluminum) shell and soft package battery. The soft package battery uses a light, thin and soft aluminum-plastic composite film as an outer packaging material, has the advantages of light weight, low cost, flexible design and the like, and becomes a focus of attention in the industry.
The aluminum-plastic composite film used in the soft package battery is a key material in the soft package battery, but the aluminum-plastic film used in the commercial soft package battery at present does not have flame retardancy. When a short circuit or overcharge occurs inside the battery, the safety of the battery cannot be ensured. In order to improve the safety performance of the soft package battery, a common method is to use or add phosphate and other non-combustible electrolytes, but the electrolyte has high viscosity, and the battery impedance is increased, so that the performance of the soft package battery is influenced.
CN210325867U discloses a novel aluminum-plastic film for a power battery, which comprises a PPS layer, an outer glue bonding layer, an upper chromizing layer, an aluminum foil layer, a lower chromizing layer, an inner glue bonding layer and a CPP layer which are sequentially arranged from the outer side to the inner side; wherein, the inner and outer surfaces of the aluminum foil layer are treated by trivalent chromium passivator to form an upper chromizing treatment layer and a lower chromizing treatment layer; and compounding the PPS layer and the CPP layer through the outer layer adhesive bonding layer and the inner layer adhesive bonding layer. However, the aluminum plastic film obtained by the method has no flame retardance and poor safety.
CN209329052U discloses a soft package battery capable of preventing internal corrosion, which comprises an aluminum-plastic film and a winding core, wherein an isolation film wrapped outside the winding core is arranged between the winding core and the aluminum-plastic film, and electrolyte is injected between the winding core and the isolation film; the aluminum-plastic film comprises a nylon layer, an aluminum layer and a PP layer which are sequentially arranged from outside to inside. However, the aluminum plastic film obtained by the method has no flame retardance and poor safety.
Therefore, there is a need in the art to develop a novel aluminum-plastic film, which has excellent safety performance, simple preparation method and easy realization of mass production.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a composite aluminum-plastic film, a preparation method and application thereof. The composite aluminum-plastic film disclosed by the invention can help to construct a soft package battery with high safety and high strength, and the preparation method is simple and is easy to realize large-scale production.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a composite aluminum-plastic film, which comprises a protective layer, a metal layer and a polymer heat-sealing layer which are sequentially arranged; the protective layer is obtained by blending nylon fibers treated by the flame retardant and high-temperature resistant fibers.
The high-temperature resistant fiber is a fiber with the safe use temperature of more than 250 ℃, and has the advantages of high heat resistance, no combustion and no shrinkage in flame and the like; the flame retardant can further improve the flame retardance of the protective layer, and further improve the safety of the soft package battery. According to the invention, the nylon fiber treated by the flame retardant and the high-temperature resistant fiber are blended, so that the composite aluminum-plastic film has high safety on the premise of not losing mechanical strength.
Preferably, the high temperature resistant fiber includes any one or a combination of at least two of poly-p-Phenylene Benzobisoxazole (PBO) fiber, poly-p-phenylene terephthalamide (PPA) fiber, Polybenzimidazole (PBI) fiber, graphitized carbon fiber, or polyphenylene sulfide (PPS) fiber; typical but non-limiting combinations include combinations of PBO fibers and PPA fibers, PPA fibers and PBI fibers, PBI fibers and PPS fibers, PBO fibers, PPA fibers and PBI fibers, PPA fibers, PBI fibers and PPS fibers, or PBO fibers, PPA fibers, PBI fibers and PPS fibers.
Preferably, the flame retardant comprises any one or a combination of at least two of alkyl phosphate flame retardant, aryl phosphate flame retardant, dicyclopentadiene flame retardant, aliphatic halogenated hydrocarbon flame retardant, aromatic halogenated hydrocarbon flame retardant or tetramethylolphosphonium salt; typical but non-limiting combinations include combinations of alkyl phosphate flame retardants with aryl phosphate flame retardants, aryl phosphate flame retardants with dicyclopentadiene flame retardants, dicyclopentadiene flame retardants with aliphatic halogenated hydrocarbon flame retardants, aliphatic halogenated hydrocarbon flame retardants with aromatic halogenated hydrocarbon flame retardants, or aromatic halogenated hydrocarbon flame retardants with tetrakis hydroxymethyl phosphate.
The alkyl phosphate flame retardant of the present invention includes, but is not limited to, tributyl phosphate and/or tris (2-ethylhexyl) phosphate.
The aryl phosphate flame retardant comprises any one or the combination of at least two of toluene-diphenyl phosphate, tricresyl phosphate, triphenyl phosphate or (2-ethylhexyl) -diphenyl phosphate; typical but non-limiting combinations include a combination of cresyl-diphenyl phosphate and tricresyl phosphate, a combination of tricresyl phosphate and triphenyl phosphate, a combination of triphenyl phosphate and (2-ethylhexyl) -diphenyl phosphate, or a combination of cresyl-diphenyl phosphate, tricresyl phosphate, triphenyl phosphate and (2-ethylhexyl) -diphenyl phosphate.
The dicyclopentadiene-based flame retardant of the present invention includes, but is not limited to, chlordane anhydride.
The aliphatic halogenated hydrocarbon comprises any one or the combination of at least two of dibromomethane, trichlorobromomethane or dichlorobromomethane.
The aromatic halogenated hydrocarbon flame retardant comprises any one or the combination of at least two of octabromodiphenyl oxide, pentabromoethyl benzene or tetrabromobisphenol A.
The tetrakis hydroxymethyl phosphonium phosphate of the present invention comprises tetrakis hydroxymethyl phosphonium chloride.
Preferably, the flame retardant is tetrakis (hydroxymethyl) phosphonium chloride (THPC).
Preferably, the mass ratio of the nylon fiber after flame retardant treatment to the high temperature resistant fiber in the protective layer is (1-2): 1-2, and may be, for example, 1:1, 2:3, 1:2, 3:4, 2:1 or 4:3, but is not limited to the enumerated values, and other unrecited values in the numerical range are also applicable.
Preferably, the metal layer is an Al layer.
Preferably, the high-temperature heat-sealing resistant layer is a polypropylene layer.
Preferably, the thickness of the protective layer is 2-3 μm, and may be, for example, 2 μm, 2.1 μm, 2.4 μm, 2.5 μm, 2.7 μm, 2.8 μm or 3 μm, but is not limited to the values recited, and other values not recited within the range of values are equally applicable.
Preferably, the metal layer has a thickness of 35 to 45 μm, and may be, for example, 35 μm, 36 μm, 38 μm, 40 μm, 42 μm, 44 μm or 45 μm, but is not limited to the values recited, and other values not recited within the range of values are equally applicable.
Preferably, the thickness of the polymeric heat-sealing layer is 30-40 μm, and may be, for example, 30 μm, 32 μm, 35 μm, 36 μm, 38 μm or 40 μm, but is not limited to the values recited, and other values not recited within the range of values are equally applicable.
In a second aspect, the present invention provides a method for preparing the composite aluminum plastic film according to the first aspect, the method comprising:
(1) soaking nylon fiber in a flame retardant to obtain the nylon fiber treated by the flame retardant;
(2) blending the nylon fiber treated by the flame retardant with high-temperature resistant fiber to obtain a protective layer;
(3) and pressing the protective layer, the metal layer and the polymer heat-sealing layer to obtain the composite aluminum-plastic film.
Preferably, the mass concentration of the flame retardant in step (1) is 20 to 30 wt%, and may be, for example, 20 wt%, 21 wt%, 22 wt%, 23 wt%, 24 wt%, 25 wt%, 26 wt%, 27 wt%, 28 wt%, 29 wt%, or 30 wt%, but is not limited to the recited values, and other values not recited within the range of values are also applicable.
In the invention, when the mass concentration of the flame retardant is higher than 30 wt%, the flame retardance of the composite aluminum-plastic film is not linearly improved due to the increase of the content of the flame retardant, and the mechanical property of the nylon fiber is reduced; and when the mass concentration of the flame retardant is less than 20 wt%, the flame retardant property of the nylon fiber is not good.
Preferably, the liquid-solid ratio of the impregnation in the step (1) is …, and the unit of the liquid-solid ratio is mL/g.
When the nylon fiber is used in a large amount during impregnation, the soaking time of the flame retardant is prolonged, and a good flame retardant effect cannot be obtained; and when the amount of the nylon fiber is less, the mechanical property of the nylon fiber can be reduced in the dipping process, and the flame retardance of the composite aluminum-plastic film can not be improved.
Preferably, the impregnation time in step (1) is 20 to 28 hours, for example, 20 hours, 21 hours, 22 hours, 23 hours, 24 hours, 25 hours, 26 hours, 27 hours or 28 hours, but not limited to the recited values, and other values not recited in the range of values are also applicable.
Preferably, the mass ratio of the nylon fiber after the flame retardant treatment in the step (2) to the high temperature resistant fiber is (1-2): 1-2), and may be, for example, 1:1, 2:3, 1:2, 3:4, 2:1 or 4:3, but is not limited to the enumerated values, and other unrecited values in the numerical range are also applicable.
In a third aspect, the invention provides a soft package battery, which comprises the aluminum-plastic film composite aluminum-plastic film for the soft package battery in the first aspect.
Compared with the prior art, the invention has the following beneficial effects:
the fibers in the protective layer selected by the invention have the advantages of high heat resistance, no combustion and no shrinkage in flame and the like; and the flame retardant can further improve the flame retardance of the protective layer, so that the safety of the soft package battery is improved. The composite aluminum-plastic film disclosed by the invention can help to construct a soft package battery with high safety and high strength.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
The embodiment provides a preparation method of a composite aluminum-plastic film, which comprises the following steps:
(1) soaking the nylon fiber in a flame retardant of tetrakis (hydroxymethyl) phosphonium chloride for 24 hours, wherein the mass concentration of the flame retardant is 25 wt%, and the nylon fiber is treated by the flame retardant;
(2) blending the nylon fiber treated by the flame retardant with the mass ratio of 1:1 and the poly-p-phenylene benzobisoxazole fiber to obtain a protective layer with the thickness of 2.5 mu m;
(3) and (3) laminating the protective layer obtained in the step (2) with an aluminum layer with the thickness of 40 mu m and a polypropylene layer with the thickness of 35 mu m to obtain the composite aluminum-plastic film.
Example 2
The embodiment provides a preparation method of a composite aluminum-plastic film, which comprises the following steps:
(1) soaking the nylon fiber in a flame retardant of tetrakis (hydroxymethyl) phosphonium chloride for 22 hours, wherein the mass concentration of the flame retardant is 28 wt%, and the nylon fiber is treated by the flame retardant;
(2) blending the nylon fiber treated by the flame retardant with the mass ratio of 2:3 with the poly-p-phenylene benzobisoxazole fiber to obtain a protective layer with the thickness of 2.7 mu m;
(3) and (3) laminating the protective layer obtained in the step (2) with an aluminum layer with the thickness of 38 mu m and a polypropylene layer with the thickness of 38 mu m to obtain the composite aluminum-plastic film.
Example 3
The embodiment provides a preparation method of a composite aluminum-plastic film, which comprises the following steps:
(1) soaking the nylon fiber in a flame retardant of tetrakis (hydroxymethyl) phosphonium chloride for 26 hours, wherein the mass concentration of the flame retardant is 22 wt%, and the nylon fiber is treated by the flame retardant;
(2) blending the nylon fiber treated by the flame retardant with the poly-p-phenylene benzobisoxazole fiber in a mass ratio of 1:2 to obtain a protective layer with the thickness of 2.2 mu m;
(3) and (3) laminating the protective layer obtained in the step (2) with an aluminum layer with the thickness of 42 microns and a polypropylene layer with the thickness of 32 microns to obtain the composite aluminum-plastic film.
Example 4
The embodiment provides a preparation method of a composite aluminum-plastic film, which comprises the following steps:
(1) soaking the nylon fiber in a flame retardant of tetrakis (hydroxymethyl) phosphonium chloride for 28 hours, wherein the mass concentration of the flame retardant is 20 wt%, so as to obtain the nylon fiber treated by the flame retardant;
(2) blending the nylon fiber treated by the flame retardant in a mass ratio of 4:3 with the poly-p-phenylene benzobisoxazole fiber to obtain a protective layer with the thickness of 2 mu m;
(3) and (3) laminating the protective layer obtained in the step (2) with an aluminum layer with the thickness of 35 mu m and a polypropylene layer with the thickness of 40 mu m to obtain the composite aluminum-plastic film.
Example 5
The embodiment provides a preparation method of a composite aluminum-plastic film, which comprises the following steps:
(1) soaking the nylon fiber in a flame retardant of tetrakis (hydroxymethyl) phosphonium chloride for 20 hours, wherein the mass concentration of the flame retardant is 30 wt%, and the nylon fiber is treated by the flame retardant;
(2) blending the nylon fiber treated by the flame retardant in a mass ratio of 4:3 with the poly-p-phenylene benzobisoxazole fiber to obtain a protective layer with the thickness of 3 mu m;
(3) and (3) laminating the protective layer obtained in the step (2) with an aluminum layer with the thickness of 45 mu m and a polypropylene layer with the thickness of 30 mu m to obtain the composite aluminum-plastic film.
Example 6
This example provides a method for preparing a composite aluminum-plastic film, which is the same as that of example 1 except that the poly (p-phenylene benzobisoxazole) fiber of step (2) is replaced with poly (p-phenylene terephthalamide) fiber of equal mass.
Example 7
This example provides a method for manufacturing a composite aluminum-plastic film, which is the same as that of example 1 except that the poly (p-phenylene benzobisoxazole) fiber of step (2) is replaced with polybenzimidazole fiber of equal mass.
Example 8
This example provides a method for manufacturing a composite aluminum-plastic film, which is the same as that of example 1 except that the poly-p-phenylene benzobisoxazole fibers in step (2) are replaced with graphitized carbon fibers of equal mass.
Example 9
The embodiment provides a preparation method of a composite aluminum-plastic film, which is the same as the embodiment 1 except that the poly-p-phenylene benzobisoxazole fibers in the step (2) are replaced by polyphenylene sulfide fibers with equal mass.
Example 10
This example provides a method for preparing a composite aluminum-plastic film, which is the same as that of example 1 except that the flame retardant is replaced by tributyl phosphate with an equal mass concentration.
Example 11
This example provides a method for preparing a composite aluminum-plastic film, which is the same as that of example 1 except that the flame retardant is replaced by tricresyl phosphate of equal mass concentration.
Example 12
This example provides a method for preparing a composite aluminum-plastic film, which is the same as that in example 1 except that the flame retardant is replaced with trichlorobromomethane with an equal mass concentration.
Example 13
This example provides a method for preparing a composite aluminum-plastic film, which is the same as that of example 1 except that the flame retardant is replaced with tetrabromobisphenol A of equal mass concentration.
Example 14
This example provides a method for preparing a composite aluminum-plastic film, which is the same as that of example 1 except that the mass concentration of the flame retardant in step (1) is 16 wt%.
Example 15
This example provides a method for preparing a composite aluminum-plastic film, which is the same as that of example 1 except that the mass concentration of the flame retardant in step (1) is 32 wt%.
Comparative example 1
The present comparative example provides a method of preparing a composite aluminum-plastic film, the method comprising:
(1) soaking the nylon fiber in a flame retardant of tetrakis (hydroxymethyl) phosphonium chloride for 24 hours, wherein the mass concentration of the flame retardant is 25 wt%, and the nylon fiber is treated by the flame retardant;
(2) spinning the nylon fiber treated by the flame retardant obtained in the step (1) to obtain a protective layer with the thickness of 2.5 microns;
(3) and (3) laminating the protective layer obtained in the step (2) with an aluminum layer with the thickness of 40 mu m and a polypropylene layer with the thickness of 35 mu m to obtain the composite aluminum-plastic film.
The flame retardant rating (referred to UL94 vertical burn test standard) and maximum crater depth of the composite aluminum plastic films provided in examples 1-15 and comparative example 1 were tested and the test results are shown in table 1.
TABLE 1
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. The composite aluminum-plastic film is characterized by comprising a protective layer, a metal layer and a polymer heat sealing layer which are sequentially arranged; the protective layer is obtained by blending nylon fibers treated by the flame retardant and high-temperature resistant fibers.
2. The composite aluminum plastic film according to claim 1, wherein the high temperature resistant fiber comprises any one of or a combination of at least two of poly-p-phenylene benzobisoxazole fiber, poly-p-phenylene terephthalamide fiber, polybenzimidazole fiber, graphitized carbon fiber, or polyphenylene sulfide fiber.
3. The composite aluminum plastic film according to claim 1 or 2, wherein the flame retardant comprises any one of alkyl phosphate flame retardants, aryl phosphate flame retardants, dicyclopentadiene flame retardants, aliphatic halogenated hydrocarbon flame retardants, aromatic halogenated hydrocarbon flame retardants, or tetrakis hydroxymethyl phosphonium salts or a combination of at least two thereof.
4. The composite aluminum-plastic film of any one of claims 1 to 3, wherein the mass ratio of the nylon fiber after flame retardant treatment to the high temperature resistant fiber in the protective layer is (1-2) to (1-2).
5. The composite aluminum plastic film of any one of claims 1 to 4, wherein the metal layer is an Al layer;
preferably, the polymeric heat-seal layer is a polypropylene layer.
6. The composite aluminum plastic film according to any one of claims 1 to 5, wherein the protective layer has a thickness of 2 to 3 μm;
preferably, the thickness of the metal layer is 35-45 μm;
preferably, the thickness of the polymeric heat-seal layer is 30-40 μm.
7. A method for preparing the composite aluminum-plastic film according to any one of claims 1 to 6, wherein the method comprises:
(1) soaking nylon fiber in a flame retardant to obtain the nylon fiber treated by the flame retardant;
(2) blending the nylon fiber treated by the flame retardant with high-temperature resistant fiber to obtain a protective layer;
(3) and pressing the protective layer, the metal layer and the polymer heat-sealing layer to obtain the composite aluminum-plastic film.
8. The method according to claim 7, wherein the mass concentration of the flame retardant in the step (1) is 20 to 30 wt%;
preferably, the impregnation time of step (1) is 20-28 h.
9. The method according to claim 7 or 8, wherein the mass ratio of the nylon fiber and the refractory fiber after the flame retardant treatment in the step (2) is (1-2) to (1-2).
10. A pouch battery, characterized in that the pouch battery comprises the composite aluminum-plastic film of any one of claims 1 to 6.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113097613A (en) * | 2021-03-25 | 2021-07-09 | 宁德新能源科技有限公司 | Electrochemical device, method for manufacturing the same, and electronic device |
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| CN206460979U (en) * | 2016-09-26 | 2017-09-01 | 东莞市卓越新材料科技有限公司 | The aluminum plastic film of good flame resistance |
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| CN104630958A (en) * | 2015-02-13 | 2015-05-20 | 上海特安纶纤维有限公司 | Fabric comprising fire-retardant yarn of blended polymer fiber containing aromatic polyamide and polyarylsulfone and production method of fabric |
| CN206460979U (en) * | 2016-09-26 | 2017-09-01 | 东莞市卓越新材料科技有限公司 | The aluminum plastic film of good flame resistance |
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