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Aluminum-plastic composite film for energy storage power battery and preparation method thereof

A technology of aluminum-plastic composite film and power battery, which is applied to battery components, chemical instruments and methods, circuits, etc., can solve the problems of poor elongation performance, poor barrier performance and poor corrosion resistance of aluminum-plastic composite film, and achieve Improved elongation and corrosion resistance, increased adhesion, and increased adhesion

Active Publication Date: 2021-06-01
CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an aluminum-plastic composite film for energy storage power batteries and its preparation method, which solves the problems of poor barrier performance, poor elongation performance and poor corrosion resistance of the aluminum-plastic composite film

Method used

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  • Aluminum-plastic composite film for energy storage power battery and preparation method thereof
  • Aluminum-plastic composite film for energy storage power battery and preparation method thereof
  • Aluminum-plastic composite film for energy storage power battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Main raw materials of polyester film and polyamide film: polyethylene terephthalate (Suzhou Zongda Plastic Raw Material Co., Ltd.), polyamide 66 resin (Shenzhen Plastic Crown Technology Co., Ltd.), SiO 2 Nano-modified particles and other additives are stirred and blended at room temperature according to the ratio of 1:1:0.1:0.1, and double-layer co-extruded to obtain a 40 μm thick anti-corrosion and heat-insulating outer layer; isocyanate: polyurethane elastomer: rosin modified resin: Other additives were stirred at 100°C for 1 hour according to the ratio of 8:1:0.5:0.1 to obtain a modified high and low temperature resistant outer layer adhesive; the surface of 30 μm thick aluminum foil was treated to obtain an environmentally friendly plasma passivated aluminum foil layer; precision coating Coating 3μm thick modified high and low temperature resistant outer layer adhesive on the outer layer of the environmentally friendly plasma passivated aluminum foil layer by way of ...

Embodiment 2

[0043] Main raw materials of polyester film and polyamide film: polyethylene terephthalate, polyamide 66 resin, SiO 2 Nano-modified particles and other additives are stirred and blended at 100°C in a ratio of 1:1:0.8:0.5, and double-layer co-extruded to obtain a 40 μm thick anti-corrosion and heat-insulating outer layer; isocyanate: polyurethane elastomer: rosin modified resin : Other additives were stirred at 180°C for 4 hours according to the ratio of 8:8:1:5 to obtain a modified high and low temperature resistant outer layer adhesive; the surface of 30μm thick aluminum foil was treated to obtain an environmentally friendly plasma passivated aluminum foil layer; Coating method Coating 3μm thick modified high and low temperature resistant outer layer adhesive on the outer layer of the environmentally friendly plasma passivation aluminum foil layer, and compounding with the outer layer of anti-corrosion and heat insulation protection; polyolefin main agent: melamine phosphate: ...

Embodiment 3

[0045] Main raw materials of polyester film and polyamide film: polyethylene terephthalate, polyamide 66 resin, SiO 2 Nano-modified particles and other additives are stirred and blended at 100°C in a ratio of 1:1:1:1, and double-layer co-extruded to obtain a 40 μm thick anti-corrosion and heat-insulating outer layer; isocyanate: polyurethane elastomer: rosin modified resin : Other additives were stirred at 180°C for 4 hours according to the ratio of 8:10:4:5 to obtain a modified high and low temperature resistant outer layer adhesive; the surface of 30μm thick aluminum foil was treated to obtain an environmentally friendly plasma passivated aluminum foil layer; Coating method Coating 3μm thick modified high and low temperature resistant outer layer adhesive on the outer layer of the environmentally friendly plasma passivation aluminum foil layer, and compounding with the outer layer of anti-corrosion and heat insulation protection; polyolefin main agent: melamine phosphate: add...

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Abstract

The invention provides an aluminum-plastic composite film for energy storage power batteries and a preparation method thereof, comprising: a five-layer structure, which is an anti-corrosion and heat-insulating outer layer, a modified high-low temperature resistant outer adhesive layer, The environment-friendly plasma passivated aluminum foil layer, the flame-retardant and anti-corrosion inner layer adhesive layer and the multi-layer co-extruded modified high-corrosion-resistant inner layer are prepared by first preparing the above materials respectively, and then adding the anti-corrosion and heat-insulating protective outer layer to the poly The modified high and low temperature resistant outer layer adhesive is coated on the amide film layer, and after drying, it is laminated with the environmentally friendly plasma passivated aluminum foil layer, and then coated with a flame retardant and anti-corrosion inner layer adhesive on the other side of the environmentally friendly plasma passivated aluminum foil layer agent, dried, and laminated with a multi-layer co-extrusion modified high corrosion-resistant inner layer, the obtained aluminum-plastic film has the characteristics of environment resistance, flame retardancy and good adhesion, which improves the extensibility and corrosion resistance of the aluminum-plastic film , has the advantages of simple operating equipment, less pollution and good uniformity of film formation, etc., and is easy to realize industrial production.

Description

technical field [0001] The invention belongs to the technical field of the lithium battery industry, and in particular relates to an aluminum-plastic composite film for an energy storage power battery and a preparation method thereof. Background technique [0002] The battery for energy storage power generally requires an application time of 8 to 10 years. Because the battery contains a variety of polar and permeable organic solvents and highly corrosive lithium salts that are easily hydrolyzed, this will cause the battery to bleed and cycle. Decreased life and other electrical properties (capacity, insulation, etc.). However, the outer nylon layer currently used is easy to absorb water, has poor water resistance, and poor heat resistance. It has high requirements for the use environment, short shelf life, and the adhesive is also prone to problems such as reduced cohesion due to hydrolysis. , and the flame retardancy is not good, and it cannot effectively guarantee safety ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/36B32B27/34B32B27/20B32B7/12B32B27/32B32B15/04B32B15/20B32B33/00H01M50/129H01M50/145B29D7/01
CPCB32B7/12B32B15/043B32B15/20B32B27/08B32B27/20B32B27/32B32B27/34B32B27/36B32B2255/06B32B2255/26B32B2307/3065B32B2307/752B32B2457/10H01M50/124Y02E60/10
Inventor 单化众吕松王芳梁俊杰
Owner CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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