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Aluminum plastic film and its application

A technology of aluminum-plastic film and aluminum layer, which is applied in the field of aluminum-plastic film and can solve the problems that aluminum-plastic film does not have flame retardancy

Active Publication Date: 2020-09-08
SOUNDON NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The first purpose of the present invention is to provide an aluminum-plastic film to solve the technical problem that the aluminum-plastic film in the prior art does not have flame retardancy, and can effectively prevent lithium-ion batteries from burning due to temperature rise and cause joint combustion

Method used

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  • Aluminum plastic film and its application
  • Aluminum plastic film and its application

Examples

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Effect test

Embodiment 1

[0064] Such as figure 1 As shown, the present embodiment is an aluminum-plastic film, which mainly includes an outer protective layer 30 , an intermediate aluminum layer 20 and an inner adhesive layer 10 . Wherein, the protection layer 30 is a nylon layer, and the bonding layer 10 is a PP layer. The thickness of the PP layer in the aluminum-plastic film is 30 μm, and the flame retardant microcapsules 40 are embedded inside, and the flame retardant microcapsules 40 account for 40% of the total volume of the PP layer. Among them, the flame retardant microcapsule 40 has a particle size of 5-10 μm, and the capsule shell is polymerized by polyamide with a melting point temperature in the range of 110-130°C. The flame retardant material is tris-(2,2,2-trifluoro ethyl) phosphate.

[0065] The following uses the lithium iron phosphate lithium ion battery packaged in the aluminum plastic film as an example. The capsule shell will melt and release the tri-(2,2,2-trifluoroethyl) phosp...

Embodiment 2

[0067] This embodiment is an aluminum-plastic film, which mainly includes an outer protective layer, an intermediate aluminum layer and an inner adhesive layer. Wherein, the protective layer is a nylon layer, and the bonding layer is a PP layer. The thickness of the PP layer in the aluminum-plastic film is 25 μm, and the flame retardant microcapsules are embedded inside, and the flame retardant microcapsules account for 50% of the total volume of the PP layer. Among them, the particle size of the flame retardant microcapsule is 8-13 μm, the capsule shell is polymerized from polyethylene glycol and polyurea, the melting point temperature is 120-140°C, and the material of the flame retardant is triethyl phosphate.

Embodiment 3

[0069] This embodiment is an aluminum-plastic film, which mainly includes an outer protective layer, an intermediate aluminum layer and an inner adhesive layer. Wherein, the protective layer is a nylon layer, and the bonding layer is a PP layer. The thickness of the PP layer in the aluminum-plastic film is 20 μm, and the flame retardant microcapsules are embedded inside, and the flame retardant microcapsules account for 30% of the total volume of the PP layer. Among them, the particle size of the flame retardant microcapsule is 10-15 μm, the capsule shell is polymerized by polyvinyl chloride and polyethylene glycol, the melting point temperature is 140-150 ° C, and the material of the flame retardant is trimethyl phosphate.

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Abstract

The invention provides an aluminum-plastic film and its application, and relates to the technical field of flame-retardant packaging. The aluminum-plastic film is embedded with flame-retardant microcapsules, and the aluminum-plastic film can solve the problems that the aluminum-plastic film in the prior art does not have. Flame retardancy, which can effectively prevent lithium-ion batteries from burning due to temperature rise and cause joint combustion technical problems, so as to achieve the purpose of flame retardancy.

Description

technical field [0001] The invention relates to the technical field of flame-retardant packaging, in particular to an aluminum-plastic film and its application. Background technique [0002] In recent years, the demand for lithium-ion batteries in power vehicles has shown a blowout growth, and higher requirements have been put forward for their safety. However, due to the instability of the lithium-ion battery itself, improper use, thinning and high energy density, the safety of the battery itself is poor, resulting in frequent safety accidents such as battery combustion and explosion. [0003] The thermal runaway of lithium-ion batteries can be divided into internal and external causes from environmental factors; from the perspective of triggering factors, it is mainly divided into thermal inducements (that is, temperature-dominated), electrochemical inducements (internal multi-element) and mechanical inducements (external contact). The internal cause mainly refers to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/02H01M10/0525H01M50/116H01M50/124
CPCH01M10/0525H01M50/116H01M50/124Y02E60/10
Inventor 孙敏敏娄忠良温转萍胡泽林文一波
Owner SOUNDON NEW ENERGY TECH CO LTD
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