CN210911486U - Double-layer flame-retardant aluminum-plastic film - Google Patents
Double-layer flame-retardant aluminum-plastic film Download PDFInfo
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- CN210911486U CN210911486U CN201920691372.1U CN201920691372U CN210911486U CN 210911486 U CN210911486 U CN 210911486U CN 201920691372 U CN201920691372 U CN 201920691372U CN 210911486 U CN210911486 U CN 210911486U
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a double-deck fire-retardant plastic-aluminum membrane for lithium ion battery, include: the layer is pasted to aluminium foil layer, heat-seal layer, protective layer, inlayer, the layer is pasted to the skin and substrate layer, and the layer is pasted with the skin respectively on the aluminium foil layer, the layer is pasted to the inlayer, and the layer is pasted with the substrate layer to the skin, and the substrate layer is pasted with the protective layer, and the layer is pasted with the heat-seal layer to the inlayer. The utility model discloses have excellent flame retardant property, can improve the outward appearance of plastic-aluminum membrane, promote the range of application and the prospect of plastic-aluminum membrane.
Description
Technical Field
The utility model belongs to the technical field of lithium cell plastic-aluminum membrane, especially, relate to a double-deck fire-retardant plastic-aluminum membrane.
Background
With the rapid development of lithium ion batteries in the fields of 3C, power and energy storage, they are continuously developed and widely applied to various fields of life, in these batteries, battery elements composed of electrodes and electrolytes need to be packaged by packaging materials, and because the lithium ion batteries with flexible packaging aluminum plastic films have the advantages of large capacity, light weight, thinness, lightness, high safety and the like, the lithium ion batteries are more and more paid attention and applied, and the performance requirements of natural aluminum plastic films are more and more high. At present, a flexible package aluminum-plastic film is generally formed by compounding three layers of films with different functions, the outer layer is formed by taking a PA layer as a protective layer, the middle layer is formed by taking an aluminum foil as an insulating layer, and the inner layer is formed by taking a CPP layer as a heat sealing layer.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present invention is directed to a double-layer flame-retardant aluminum-plastic film for solving the problem of the prior art that the aluminum-plastic film may cause fire or even explosion.
In order to realize above-mentioned purpose and other relevant purposes, the utility model provides a double-deck fire-retardant plastic-aluminum membrane, the plastic-aluminum membrane includes: the layer is pasted to aluminium foil layer, heat-seal layer, protective layer, inlayer, the layer is pasted to the skin and substrate layer, and the layer is pasted with the skin respectively on the aluminium foil layer, the layer is pasted to the inlayer, and the layer is pasted with the substrate layer to the skin, and the substrate layer is pasted with the protective layer, and the layer is pasted with the heat-seal layer to the inlayer.
The thickness of the aluminum-plastic film is 110-160 μm.
The thickness of the aluminum foil layer is 40-50 μm.
The thickness of the inner layer pasting layer is 4 μm.
The thickness of the outer layer pasting layer is 4 μm.
The thickness of the base material layer is 10-40 μm.
The thickness of the protective layer is 1-20 μm.
As the above, the utility model provides a pair of double-deck fire-retardant plastic-aluminum membrane has following beneficial effect: the utility model discloses a double-deck fire-retardant plastic-aluminum membrane can the greatly reduced plastic-aluminum membrane catch fire or the risk of explosion, can to a great extent improve the outward appearance quality of plastic-aluminum membrane simultaneously.
Drawings
FIG. 1 is a schematic structural diagram of the present invention
Description of component reference numerals
1. Protective layer
2. Substrate layer
3. Outer tie layer
4. Aluminium foil layer
5. Inner tie layer
6. Heat-sealing layer
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
Referring to fig. 1, it should be noted that the illustration provided in the present embodiment is only a schematic illustration of the basic idea of the present invention, and although the illustration only shows the components related to the present invention and is not drawn according to the number, shape and size of the components in actual implementation, the form, number and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.
As shown in fig. 1, a double-layer flame retardant aluminum-plastic film comprises: aluminium foil layer 4, heat-seal layer, protective layer, inlayer paste layer, skin paste layer and substrate layer.
Example 1
A double-layer flame-retardant aluminum-plastic film is formed by laminating a protective layer 1 with the thickness of 10 microns, a base material layer 2 with the thickness of 15 microns, an outer bonding layer 3 with the thickness of 4 microns, an aluminum foil layer 4 with the thickness of 40 microns, an inner bonding layer 5 with the thickness of 4 microns and a heat sealing layer 6 with the thickness of 40 microns from top to bottom in sequence.
The protective layer 1 is prepared by coating siloxane modified epoxy resin dispersed with flame retardant particles on the surface of a base material layer 2, wherein the flame retardant particles are aluminum hydroxide, and the particle size D90 of the aluminum hydroxide particles is 200 nm; the siloxane is 3-aminopropyl triethoxysilane, and the mass ratio of flame retardant particles in the epoxy resin is 1%.
Nanometer silicon dioxide is dispersed in the substrate layer 2, the particle size of the nanometer silicon dioxide is 180 +/-5 nm, the melting point is 1650 +/-70 ℃, and the mass ratio of the nanometer silicon dioxide added in the substrate layer 2 is 0.5%.
Example 2
A double-layer flame-retardant aluminum-plastic film is formed by laminating a protective layer 1 with the thickness of 5 microns, a base material layer 2 with the thickness of 20 microns, an outer bonding layer 3 with the thickness of 4 microns, an aluminum foil layer 4 with the thickness of 40 microns, an inner bonding layer 5 with the thickness of 4 microns and a heat sealing layer 6 with the thickness of 80 microns from top to bottom in sequence.
The protective layer 1 is prepared by coating siloxane modified epoxy resin dispersed with flame retardant particles on the surface of a base material layer 2, wherein the flame retardant particles are aluminum hydroxide, and the particle size D90 of the aluminum hydroxide particles is 200 nm; the siloxane is 3-aminopropyltriethoxysilane, and the mass ratio of flame retardant particles in the epoxy resin is 0.5%.
Nanometer silicon dioxide is dispersed in the substrate layer 2, the particle size of the nanometer silicon dioxide is 180 +/-5 nm, the melting point is 1650 +/-70 ℃, and the mass ratio of the nanometer silicon dioxide added in the substrate layer 2 is 0.5%.
Example 3
A double-layer flame-retardant aluminum-plastic film is formed by laminating a protective layer 1 with the thickness of 10 microns, a base material layer 2 with the thickness of 15 microns, an outer bonding layer 3 with the thickness of 4 microns, an aluminum foil layer 4 with the thickness of 40 microns, an inner bonding layer 5 with the thickness of 4 microns and a heat sealing layer 6 with the thickness of 80 microns from top to bottom in sequence.
The protective layer 1 is prepared by coating siloxane modified epoxy resin dispersed with flame retardant particles on the surface of a base material layer 2, wherein the flame retardant particles are a mixture of aluminum hydroxide and magnesium hydroxide, the mass ratio of the aluminum hydroxide to the magnesium hydroxide is 1:0.1, and the particle size D90 of the aluminum hydroxide and the magnesium hydroxide particles is 200 nm; the siloxane is gamma-glycidoxypropyltrimethoxysilane, and the mass ratio of flame retardant particles in the epoxy resin is 1%.
Nanometer silicon dioxide is dispersed in the substrate layer 2, the particle size of the nanometer silicon dioxide is 180 +/-5 nm, the melting point is 1650 +/-70 ℃, and the mass ratio of the nanometer silicon dioxide added in the substrate layer 2 is 1%.
Example 4
A double-layer flame-retardant aluminum-plastic film is formed by laminating a protective layer 1 with the thickness of 10 microns, a base material layer 2 with the thickness of 15 microns, an outer bonding layer 3 with the thickness of 4 microns, an aluminum foil layer 4 with the thickness of 40 microns, an inner bonding layer 5 with the thickness of 4 microns and a heat sealing layer 6 with the thickness of 40 microns from top to bottom in sequence.
The protective layer 1 is prepared by coating siloxane modified epoxy resin dispersed with flame retardant particles on the surface of a base material layer 2, wherein the flame retardant particles are a mixture of aluminum hydroxide and magnesium hydroxide, the mass ratio of the aluminum hydroxide to the magnesium hydroxide is 1:1, and the particle size D90 of the aluminum hydroxide and the magnesium hydroxide particles is 200 nm; the siloxane is gamma-glycidoxypropyltrimethoxysilane, and the mass ratio of flame retardant particles in the epoxy resin is 2%.
Nanometer silicon dioxide is dispersed in the substrate layer 2, the particle size of the nanometer silicon dioxide is 180 +/-5 nm, the melting point is 1650 +/-70 ℃, and the mass ratio of the nanometer silicon dioxide added in the substrate layer 2 is 1%.
Example 5
A double-layer flame-retardant aluminum-plastic film is formed by laminating a protective layer 1 with the thickness of 5 microns, a base material layer 2 with the thickness of 20 microns, an outer bonding layer 3 with the thickness of 4 microns, an aluminum foil layer 4 with the thickness of 40 microns, an inner bonding layer 5 with the thickness of 4 microns and a heat sealing layer 6 with the thickness of 80 microns from top to bottom in sequence.
The protective layer 1 is prepared by coating siloxane modified epoxy resin dispersed with flame retardant particles on the surface of a base material layer 2, wherein the flame retardant particles are a mixture of aluminum hydroxide and magnesium hydroxide, the mass ratio of the aluminum hydroxide to the magnesium hydroxide is 1:0.5, and the particle size D90 of the aluminum hydroxide and the magnesium hydroxide particles is 200 nm; the siloxane is gamma-glycidoxypropyltrimethoxysilane, and the mass ratio of flame retardant particles in the epoxy resin is 2%.
Nanometer silicon dioxide is dispersed in the substrate layer 2, the particle size of the nanometer silicon dioxide is 180 +/-5 nm, the melting point is 1650 +/-70 ℃, and the mass ratio of the nanometer silicon dioxide added in the substrate layer 2 is 2%.
Comparative example:
a double-layer flame-retardant aluminum-plastic film is formed by laminating a base material layer 2 with the thickness of 25 mu m, an outer bonding layer 3 with the thickness of 4 mu m, an aluminum foil layer 4 with the thickness of 40 mu m, an inner bonding layer 5 with the thickness of 4 mu m and a heat sealing layer 6 with the thickness of 40 mu m from top to bottom in sequence.
And respectively packaging the battery cell by using the aluminum plastic films prepared in the embodiments and the comparative examples, and then detecting the safety of the packaged sample according to the standard GB/T18287-2013 of the industry. The results are shown in Table 1.
| Sample (I) | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example |
| Whether the needle pricks or not | Whether or not | Whether or not | Whether or not | Whether or not | Whether or not | Is that |
| Whether the short circuit is on fire | Whether or not | Whether or not | Whether or not | Whether or not | Whether or not | Whether or not |
| Whether extrusion is on fire | Whether or not | Whether or not | Whether or not | Whether or not | Whether or not | Whether or not |
TABLE 1 results of the Performance test of examples and comparative examples
As can be seen from table 1, the utility model discloses plastic-aluminum membrane product comparative example relatively uses and has more excellent fire behaviour, security performance on the lithium ion battery packing.
The utility model discloses a theory of operation: the nylon added with the nano silicon dioxide is used as the base material layer 2 of the aluminum-plastic film, so that the aluminum-plastic film has excellent flame retardant property, has better ageing resistance, avoids the hidden danger that the aluminum-plastic film is easy to break, crack or even generate electric leakage short circuit in the use process, improves the surface lubricity and surface glossiness of the aluminum-plastic film, and endows the aluminum-plastic film with stable appearance quality.
The surface of the base material layer 2 is coated with siloxane modified epoxy resin dispersed with aluminum hydroxide, magnesium hydroxide or mixture particles of the aluminum hydroxide and the magnesium hydroxide, so that the aluminum-plastic film is endowed with excellent flame retardant performance, and the aluminum hydroxide and the magnesium hydroxide are important additive inorganic flame retardants with flame retardant and smoke suppression functions. The flame retardant mechanism is mainly as follows: (1) in the combustion process, when the temperature reaches more than 200 ℃, the polymer resin is dehydrated and decomposed in advance, so that a large amount of heat is absorbed, the temperature is reduced, the combustion is prevented, and the thermal decomposition of the polymer resin is inhibited; (2) the water vapor formed in the decomposition process of the aluminum hydroxide and the magnesium hydroxide is used for diluting oxygen and combustible gas, inhibiting the accumulation and growth of soot and reducing the toxicity of the smoke; (3) the aluminum hydroxide is dehydrated to generate aluminum oxide to cover the surface of the polymer, so that the effects of isolating air and preventing combustion are achieved.
Compared with the common aluminum-plastic film, the aluminum-plastic film with the protective layer 1 has the following advantages: a. by adding the nano silicon dioxide in the substrate layer 2, the aluminum-plastic film has excellent ageing resistance and corrosion resistance, and the hidden danger that the aluminum-plastic film is easy to break, crack and even generate electric leakage short circuit in the use process is avoided. b. The surface of the base material layer 2 is coated with the siloxane modified epoxy resin dispersed with flame retardant particles, so that the aluminum-plastic film has excellent flame retardant performance, and can be effectively prevented from being ignited under the condition that the aluminum-plastic film is close to a fire source or is in contact with open fire, thereby avoiding the occurrence of environmental hazard factors such as fire and the like. c. The protective layer 1 is designed to improve the aging resistance of the aluminum-plastic film and improve the surface lubricity and surface glossiness of the aluminum-plastic film. The flame retardant particles are added into the protective layer 1, so that the flame retardance is optimized, and the appearance quality of the aluminum plastic film is improved. d. The anti-aging flame-retardant aluminum-plastic film is designed, so that the aluminum-plastic film has excellent flame retardant property, and the application field and the development prospect of the aluminum-plastic film are increased.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. A double-layer flame-retardant aluminum-plastic film is characterized by comprising: the layer is pasted to aluminium foil layer, heat-seal layer, protective layer, inlayer, the layer is pasted to the skin and substrate layer, and the layer is pasted with the skin respectively on the aluminium foil layer, the layer is pasted to the inlayer, and the layer is pasted with the substrate layer to the skin, and the substrate layer is pasted with the protective layer, and the layer is pasted with the heat-seal layer to the inlayer.
2. The double-layer flame-retardant aluminum-plastic film as claimed in claim 1, wherein the thickness of the aluminum-plastic film is 110 μm to 160 μm.
3. The double-layer flame-retardant aluminum-plastic film as recited in claim 2, wherein the thickness of the aluminum foil layer is 40 μm to 50 μm.
4. The double-layer flame-retardant aluminum-plastic film as claimed in claim 2, wherein the thickness of the inner layer pasting layer is 4 μm.
5. The double-layer flame-retardant aluminum-plastic film as claimed in claim 2, wherein the thickness of the outer layer pasting layer is 4 μm.
6. The double-layer flame-retardant aluminum-plastic film as recited in claim 2, wherein the thickness of the base layer is 10 μm to 40 μm.
7. The double-layer flame-retardant aluminum-plastic film as recited in claim 2, wherein the thickness of the protective layer is 1 μm to 20 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691372.1U CN210911486U (en) | 2019-05-15 | 2019-05-15 | Double-layer flame-retardant aluminum-plastic film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691372.1U CN210911486U (en) | 2019-05-15 | 2019-05-15 | Double-layer flame-retardant aluminum-plastic film |
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| CN210911486U true CN210911486U (en) | 2020-07-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114678632A (en) * | 2022-03-15 | 2022-06-28 | 浙江锂盾新能源材料有限公司 | Cooling fire-extinguishing type flame-retardant lithium ion battery aluminum plastic film and battery |
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- 2019-05-15 CN CN201920691372.1U patent/CN210911486U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114678632A (en) * | 2022-03-15 | 2022-06-28 | 浙江锂盾新能源材料有限公司 | Cooling fire-extinguishing type flame-retardant lithium ion battery aluminum plastic film and battery |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210209 Address after: 336000 east of Junzhou North Road, Gaoan hi tech Industrial Park, Yichun City, Jiangxi Province Patentee after: Jiangxi Ruijie New Material Technology Co., Ltd Address before: 201399 No. 155 Nanlu Highway, Pudong New Area, Shanghai Patentee before: SHANGHAI ENJIE NEW MATERIAL TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |