Matte black polyamide film for lithium ion battery and black master batches and preparation method thereof

A polyamide film and lithium-ion battery technology, applied in chemical instruments and methods, battery components, circuits, etc., to achieve the effects of enhancing capabilities, increasing output and production capacity, and improving production efficiency

Active Publication Date: 2021-02-26
厦门长塑实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a kind of matte black polyamide film for lithium ion battery and its black masterbatch and preparation method, solve the polyamide film for lithium ion battery in the above-mentioned background technology coloring problem

Method used

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  • Matte black polyamide film for lithium ion battery and black master batches and preparation method thereof
  • Matte black polyamide film for lithium ion battery and black master batches and preparation method thereof
  • Matte black polyamide film for lithium ion battery and black master batches and preparation method thereof

Examples

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Embodiment 1

[0053] The matte black polyamide film for lithium-ion batteries in this embodiment comprises a three-layer film structure, which is a matte black polyamide upper surface layer, a polyamide middle layer and a black polyamide lower surface layer sequentially from top to bottom. In parts by mass, the upper surface layer includes 5 parts of black masterbatch, 10 parts of toughening agent, 5 parts of matting agent, 2 parts of additives, and 78 parts of polyamide; the middle layer is 100 parts of polyamide Amide; the lower surface layer includes 5 parts of black masterbatch, 10 parts of toughening agent, 2 parts of additives, and 83 parts of polyamide.

[0054] In this example, the additives are selected from lubricants, anti-blocking agents, and antioxidants in three mixtures in a ratio of 1:2:1, the lubricants are selected from erucamide; the antioxidants are selected from antioxidants 1098, anti-oxidants A mixture of three kinds of oxygen agent 168 and antioxidant SEED in a ratio...

Embodiment 2

[0074] The matte black polyamide film for lithium-ion batteries in this embodiment has a three-layer film structure, which is a matte black polyamide upper surface layer, a polyamide middle layer and a black polyamide lower surface layer from top to bottom. In parts by mass, the upper surface layer includes 3 parts of black masterbatch, 10 parts of toughening agent, 3 parts of matting agent, 2 parts of additives, and 82 parts of polyamide; the middle layer is 100 parts of polyamide Amide; the lower surface layer includes 3 parts of black masterbatch, 10 parts of toughening agent, 2 parts of additives, and 85 parts of polyamide.

[0075] In this example, the additives are selected from three mixtures of lubricant, anti-blocking agent and antioxidant in a ratio of 1:2:1; the lubricant is selected from erucamide; the antioxidant is selected from antioxidant 1098, anti-oxidant A mixture of three kinds of oxygen agent 168 and antioxidant SEED in a ratio of 2:1:2; the blocking agent...

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Abstract

The invention discloses a matte black polyamide film for a lithium ion battery and black master batches and a preparation method thereof. The film sequentially comprises a matte black polyamide uppersurface layer, a polyamide middle layer and a black polyamide lower surface layer from top to bottom. The upper surface layer is prepared from, by mass, 1-20 parts of the black master batches, 1-20 parts of toughening agents, 1-20 parts of matting agents, 1-5 parts of additives and 35-96 parts of polyamide. The middle layer is prepared from 100 parts of the polyamide. The lower surface layer is prepared from 1-20 parts of the black master batches, 1-20 parts of the toughening agents, 1-5 parts of the additives and 55-97 parts of the polyamide. The black master batches are prepared by processing under the combination condition of a special threaded element and a specific screw rod, then the black master batches are prepared into the film, so that the film is low in glossiness, provides a soft effect to people, is uniform in black additive distribution and has no granular sensation, process defects in production are easily identified, and the film is particularly suitable for the field of high-grade lithium ion battery packaging.

Description

technical field [0001] The invention belongs to the technical field of film flexible packaging, and in particular relates to a matte black polyamide film for a lithium ion battery, a black masterbatch and a preparation method thereof. Background technique [0002] In lithium-ion battery packaging, there are two ways of hard shell packaging and soft shell packaging. Among them, soft-pack lithium-ion batteries have the characteristics of high safety, small size, light weight and flexible design, and are widely used in different electronic products and energy storage products, such as mobile phones, tablet computers, wearable smart devices, electric bicycles , electric motorcycles, bluetooth headsets, etc. As the packaging film used for soft-pack lithium-ion batteries, its common structure is: nylon layer, adhesive layer, aluminum layer, adhesive layer and heat-sealed CPP layer. Among them, the nylon layer is one of the key materials with high technical barriers and has been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/10B29C48/92C08J5/18C08J3/22C08L77/00C08L87/00C08L83/04C08L33/12C08L91/06C08L23/30C08L23/08C08K3/04B32B27/34H01M50/121H01M50/129H01M50/105
CPCC08J3/226C08J5/18B32B27/34C08J2377/00C08J2477/00C08K3/04B29C48/57B29B9/06B32B27/20B32B27/08C08K3/042B32B2307/4026B32B2307/408B32B2457/10B32B2307/558Y02E60/10
Inventor 廖贵何刘运锦林新土贾露李智尧陈曦
Owner 厦门长塑实业有限公司
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