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Polyamide film for flexible packaging of lithium battery and preparation process thereof

A polyamide film and flexible packaging technology, applied in the field of polyamide film and its preparation technology, can solve problems such as difficulty in meeting, and achieve the effects of good dimensional stability, low bow effect and good film surface quality

Active Publication Date: 2019-11-08
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

These general-purpose antiblocking agents are difficult to meet the increasingly stringent requirements on the number of crystal points and black spots for biaxially oriented polyamide films for aluminum-plastic films

Method used

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  • Polyamide film for flexible packaging of lithium battery and preparation process thereof
  • Polyamide film for flexible packaging of lithium battery and preparation process thereof
  • Polyamide film for flexible packaging of lithium battery and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of polyamide film used for flexible packaging of lithium batteries has a three-layer structure,

[0039] The mass percentage of the upper surface layer 1 component is: functional masterbatch A 4%, nylon 6 96%;

[0040] The mass percentage of the core layer 2 components is: functional masterbatch B 6%, nylon 6 94%;

[0041] The mass percentages of the three components of the lower surface layer are: functional masterbatch C 4%, nylon 6 96%.

[0042] The mass percentage of component A of the functional masterbatch is: soft butyl polyacrylate cross-linked particles 6%, nylon 694%;

[0043] The mass percentage of component B of the functional masterbatch is: nano-magnesium oxide 6%, nylon 6 94%;

[0044] The mass percentage of component C of the functional masterbatch is: soft polyacrylate butyl resin cross-linked particles 6%, silicone wax powder 2%, nylon 6 92%.

[0045] The upper surface layer 1 has a thickness of 1.7 μm.

[0046] The thickness of the core lay...

Embodiment 2

[0049] A kind of polyamide film used for flexible packaging of lithium batteries has a three-layer structure,

[0050] The mass percentage of the upper surface layer 1 component is: functional masterbatch A 6%, nylon 6 94%;

[0051] The mass percentage of the core layer 2 components is: functional masterbatch B 10%, nylon 6 90%;

[0052] The mass percentages of the three components of the lower surface layer are: functional masterbatch C 6%, nylon 6 94%.

[0053] The mass percentage of component A of the functional masterbatch is: soft butyl polyacrylate cross-linked particles 8%, nylon 692%;

[0054] The mass percentage of component B of the functional masterbatch is: nano-magnesium oxide 8%, nylon 6 92%;

[0055] The mass percentage of component C of the functional masterbatch is: 8% soft polyacrylate cross-linked particles, 2% silicone wax powder, and 90% nylon 6.

[0056] The upper surface layer 1 has a thickness of 1.7 μm.

[0057] The thickness of the core layer 2 is 2...

Embodiment 3

[0060] A kind of polyamide film used for flexible packaging of lithium batteries has a three-layer structure,

[0061] The mass percentage of the upper surface layer 1 component is: functional masterbatch A 4%, nylon 6 96%;

[0062] The mass percentage of the core layer 2 components is: functional masterbatch B 6%, nylon 6 79%, nylon 1212 15%;

[0063] The mass percentages of the three components of the lower surface layer are: functional masterbatch C 4%, nylon 6 96%.

[0064] The mass percentage of component A of the functional masterbatch is: soft butyl polyacrylate cross-linked particles 6%, nylon 694%;

[0065] The mass percentage of component B of the functional masterbatch is: nano-magnesium oxide 6%, nylon 6 94%;

[0066] The mass percentage of component C of the functional masterbatch is: soft polyacrylate butyl resin cross-linked particles 6%, silicone wax powder 2%, nylon 6 92%.

[0067] The upper surface layer 1 has a thickness of 1.7 μm.

[0068] The thickness...

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Abstract

The invention provides a polyamide film for flexible packaging of a lithium battery and a preparation process thereof. The polyamide film for flexible packaging of the lithium battery comprises a polyamide substrate and functional master batches; the functional master batches comprise a functional master batch A; and the raw materials used by the functional master batch A comprise 5% to 8% of softpolybutyl acrylate crosslinked particles and 92% to 95% of polyamide resin. Through using the functional master batch A with the soft polybutyl acrylate (PBA) crosslinked particles added as an opening agent, the problems of crystal and black spots caused by the tradition can be solved, and the defects that a pin hole is formed in an aluminum plastic film and the like can be prevented. The polyamide film for flexible packaging of the lithium battery has good film surface quality, excellent smoothness, good dimensional stability, small heat shrinkage rate, high tensile strength, good flexibility and barrier properties, small anisotropy, low arch effects and is extremely suitable for application to the lithium ion battery packaging material.

Description

technical field [0001] The invention relates to the technical field of lithium battery packaging, in particular to a polyamide film for flexible packaging of lithium batteries and a preparation process thereof. Background technique [0002] The material used for flexible packaging of lithium-ion battery cases is usually aluminum-plastic composite film, and its typical structure is: biaxially oriented polyamide layer, adhesive layer, aluminum layer, special adhesive layer and cast polypropylene layer. Among them, the biaxially stretched polyamide layer (that is, the biaxially stretched polyamide film) plays a major mechanical support role in the entire aluminum-plastic composite film. In order to ensure that the lithium battery outer packaging does not have problems such as film warping and film breakage during the one-step cold stamping process, it is required that the biaxially oriented polyamide film has excellent mechanical strength and ultra-high flexibility, and the dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02C08L77/02C08L33/08C08L83/04C08K3/22C08J3/22C08J5/18
CPCC08J3/226C08J5/18C08J2377/02C08J2477/02C08J2433/08C08J2483/04C08K2201/011C08K2003/222H01M50/116Y02E60/10
Inventor 刘运锦贾露李智尧林新土陈曦郑伟
Owner 厦门长塑实业有限公司
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