Composite aluminum-plastic film as well as preparation method and application thereof

A composite aluminum and plastic film technology, applied in chemical instruments and methods, applications, household appliances, etc., can solve the problems of aluminum-plastic film without flame retardancy and poor safety, so as to improve safety, enhance flame retardancy, The effect of high heat resistance

Pending Publication Date: 2021-02-05
HUBEI JINQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the aluminum-plastic film that described method obtains does not have flame retardancy, and safety is relatively poor

Method used

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  • Composite aluminum-plastic film as well as preparation method and application thereof
  • Composite aluminum-plastic film as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a method for preparing a composite aluminum-plastic film, the preparation method comprising:

[0042] (1) Nylon fibers are immersed in the flame retardant tetrakis hydroxymethyl phosphorus chloride, the mass concentration of the flame retardant is 25wt%, and the immersion time is 24h to obtain the nylon fibers after the flame retardant treatment;

[0043] (2) Nylon fibers treated with a flame retardant at a mass ratio of 1:1 are blended with poly-p-phenylenebenzobisoxazole fibers to obtain a protective layer with a thickness of 2.5 μm;

[0044](3) Laminating the protective layer obtained in step (2) with an aluminum layer with a thickness of 40 μm and a polypropylene layer with a thickness of 35 μm to obtain a composite aluminum-plastic film.

Embodiment 2

[0046] This embodiment provides a method for preparing a composite aluminum-plastic film, the preparation method comprising:

[0047] (1) Nylon fibers are immersed in the flame retardant tetrakis hydroxymethyl phosphorus chloride, the mass concentration of the flame retardant is 28wt%, and the immersion time is 22h to obtain the nylon fibers after the flame retardant treatment;

[0048] (2) Nylon fibers treated with a flame retardant with a mass ratio of 2:3 are blended with poly-p-phenylene benzobisoxazole fibers to obtain a protective layer with a thickness of 2.7 μm;

[0049] (3) Laminating the protective layer obtained in step (2) with an aluminum layer with a thickness of 38 μm and a polypropylene layer with a thickness of 38 μm to obtain a composite aluminum-plastic film.

Embodiment 3

[0051] This embodiment provides a method for preparing a composite aluminum-plastic film, the preparation method comprising:

[0052] (1) Nylon fibers are immersed in the flame retardant tetrakis hydroxymethyl phosphorus chloride, the mass concentration of the flame retardant is 22wt%, and the immersion time is 26h to obtain the nylon fibers after the flame retardant treatment;

[0053] (2) Nylon fibers treated with a flame retardant at a mass ratio of 1:2 are blended with poly-p-phenylene benzobisoxazole fibers to obtain a protective layer with a thickness of 2.2 μm;

[0054] (3) Laminating the protective layer obtained in step (2) with an aluminum layer with a thickness of 42 μm and a polypropylene layer with a thickness of 32 μm to obtain a composite aluminum-plastic film.

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Abstract

The invention relates to a composite aluminum-plastic film as well as a preparation method and application thereof. The composite aluminum-plastic film comprises a protective layer, a metal layer anda polymer heat-seal layer which are arranged in sequence, and the protective layer is obtained by blending nylon fibers treated by a flame retardant and high-temperature-resistant fibers. The selectedfibers in the protective layer have the advantages of high strength, high heat resistance, no combustion in flame, no shrinkage and the like; and due to the existence of the flame retardant, the flame retardance of the protective layer can be further improved, and the safety of a soft package battery is further 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 [0001] The invention belongs to the technical field of batteries, and in particular relates to a composite aluminum-plastic film, its preparation method and application. Background technique [0002] Common commercial lithium-ion batteries can be divided into three types according to their packaging forms: steel cylindrical type, square steel (aluminum) shell type and pouch battery. Among them, the pouch battery uses thin and soft aluminum-plastic composite film as its outer packaging material, which has the advantages of light weight, low cost and flexible design, and has become a hot spot in the industry. [0003] The aluminum-plastic composite film used in pouch batteries is the key material in pouch batteries, but the aluminum-plastic films used in commercial pouch batteries today are not flame retardant. When there is a short circuit or overcharge inside the battery, its safety cannot be guaranteed. In order to improve the safety performance of pouch b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/085B32B15/14B32B15/20B32B27/06B32B27/32B32B27/28B32B33/00B32B37/10B32B38/08
CPCB32B5/024B32B15/14B32B15/20B32B15/085B32B27/06B32B27/32B32B33/00B32B38/08B32B37/10B32B2262/0261B32B2262/02B32B2307/306B32B2439/40
Inventor 卢海燕
Owner HUBEI JINQUAN NEW MATERIALS CO LTD
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