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Gas adsorption type inner-layer co-extrusion membrane for flexible packaging of lithium battery and preparation method of gas absorption type inner-layer co-extrusion membrane

A gas adsorption and flexible packaging technology, applied in packaging, wrapping paper, electrical components, etc., can solve the problems of poor air tightness of polypropylene film, short service life of lithium batteries, and damage of flatulence, so as to prevent gas failure and excellent toughness , good mechanical properties

Active Publication Date: 2016-12-07
江苏华谷新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polypropylene film has poor airtightness and is prone to flatulence damage during lithium battery storage
The lithium battery with heat-sealed barrier layer has a short service life

Method used

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  • Gas adsorption type inner-layer co-extrusion membrane for flexible packaging of lithium battery and preparation method of gas absorption type inner-layer co-extrusion membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as figure 1 As shown, the gas-absorbing inner-layer co-extruded film for lithium battery packaging of the present invention is composed of a gas-absorbing layer, an adhesive layer, a barrier layer, a mechanical support layer, and a heat-sealing layer in sequence from outside to inside. The gas adsorption layer is composed of an oxygen adsorption layer and a carbon dioxide adsorption layer. in,

[0055] The oxygen adsorption layer contains the following raw materials in parts by mass:

[0056] 90 parts of polyethylene terephthalate;

[0057] 13 parts of hydroxyl-terminated polybutadiene / maleic anhydride ester oxygen absorber;

[0058] 0.1 part of cobalt acetate catalyst;

[0059] The carbon dioxide adsorption layer contains the following raw materials in parts by mass:

[0060] 95 parts of polyethylene terephthalate;

[0061] Metal-organic framework (MOFs) pumice-like imidazole-based framework material 0.5 part.

[0062] The adhesive layer is acid-modified po...

Embodiment 2

[0087] Such as figure 1 As shown, the gas-absorbing inner-layer co-extruded film for flexible packaging of lithium batteries of the present invention is composed of a gas-adsorbing layer, an adhesive layer, a barrier layer, a mechanical support layer, and a heat-sealing layer in sequence from outside to inside. The gas adsorption layer is composed of an oxygen adsorption layer and a carbon dioxide adsorption layer. in,

[0088] The oxygen adsorption layer contains the following raw materials in parts by mass:

[0089] 93 parts of polyethylene terephthalate;

[0090] 15 parts of 1,4-butenediol / maleic anhydride ester compound;

[0091] 0.08 part of cobalt acetate catalyst;

[0092] The carbon dioxide adsorption layer contains the following raw materials in parts by mass:

[0093] 92 parts of polyethylene terephthalate;

[0094] Metal-organic framework (MOFs) pumice-like imidazole-based framework material 1.6 parts.

[0095] The adhesive layer is acid-modified polyolefin a...

Embodiment 3

[0121] Such as figure 1 As shown, the gas-absorbing inner-layer co-extruded film for flexible packaging of lithium batteries of the present invention is composed of a gas-adsorbing layer, an adhesive layer, a barrier layer, a mechanical support layer, and a heat-sealing layer in sequence from outside to inside. The gas adsorption layer is composed of an oxygen adsorption layer and a carbon dioxide adsorption layer. in,

[0122] The oxygen adsorption layer contains the following raw materials in parts by mass:

[0123] 95 parts of polyethylene terephthalate;

[0124] 10 parts of 1,4-butenediol / methyltetrahydrophthalic anhydride esterified oxygen absorber;

[0125] 0.05 part of cobalt acetate catalyst;

[0126] The carbon dioxide adsorption layer contains the following raw materials in parts by mass:

[0127] 90 parts of polyethylene terephthalate;

[0128] Metal-organic framework materials (MOFs) 3 parts of pumice-like imidazole-based framework materials.

[0129] The ad...

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Abstract

The invention discloses a gas adsorption type inner-layer co-extrusion membrane for packaging of a lithium battery and a preparation method of the gas adsorption type inner-layer co-extrusion membrane, and particularly provides an inner-layer co-extrusion membrane, contacted with a polymer electrolyte solution, of a polymer lithium battery inner layer and a preparation method of the inner-layer co-extrusion membrane. The gas adsorption type inner-layer co-extrusion membrane is characterized by comprising a gas adsorption layer, an adhesion layer, a separation layer, a mechanical support layer and a hot sealing layer from outside to inside sequentially. The gas adsorption type inner-layer co-extrusion membrane is prepared through preparation of raw materials of all layers and co-extrusion of the adjacent layers. With the adoption of the gas adsorption type inner-layer co-extrusion membrane and the preparation method, the conditions of integral damage and liquid leakage of the flexible packaging can be avoided, the safety of the lithium battery is improved, and the service life of the lithium battery is prolonged.

Description

technical field [0001] The invention relates to a lithium battery soft packaging material and a preparation method thereof. Specifically, it is an inner-layer co-extruded film in which the inner layer of a polymer lithium battery is in contact with a polymer electrolyte solution and a preparation method thereof. Background technique [0002] It is well known in the battery production industry that polymer batteries are the most advanced secondary batteries in the world today. They have the advantages of high specific energy and fast charging and discharging speeds. They have gradually replaced lithium-ion batteries and are used in mobile phones, notebook computers, MP3, PDA, DV and other digital products have gradually become indispensable in people's work and life. The safety of the battery is the most important factor affecting the application of the battery. The gas swelling phenomenon of the lithium battery is the main factor affecting the safety of the battery, resulti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/18B32B27/08B32B7/10B32B27/32B32B33/00B32B37/12B32B38/00B32B38/16H01M2/02B29D7/01B65D65/40
CPCY02E60/10
Inventor 丘晓琳吴宇涛傅苗苗张李璇陈臻杰富坚定
Owner 江苏华谷新材料有限公司
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