Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method of anti-corrosion lithium battery shell

A lithium battery, corrosion-resistant technology, applied in the field of polymers, can solve the problems of little achievements, insufficient research on inner layer materials, poor strength, etc.

Inactive Publication Date: 2017-09-22
ZHEJIANG DIHENG IND CO LTD
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the aluminum-plastic film materials suitable for lithium batteries are mainly produced in Japan. For example, the "X100 barrier layer aluminum-plastic film material" developed by it is advanced in technology and has applied for a large number of related patents, but this product also has the disadvantage of poor strength.
There are also many domestic enterprises and institutions that have carried out the research and development of aluminum-plastic film, but the results are not great, and various research institutes have not done enough research on the inner layer material of aluminum-plastic film material, and the corrosion resistance of the electrolyte is poor.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of anti-corrosion lithium battery shell

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] The invention provides a method for preparing a corrosion-resistant lithium battery case, comprising the following steps: 80-120 parts by mass of polypropylene, 70-100 parts by mass of polyarylether nitrile ketone, 50-100 parts by mass of propylene trimethoxysilane, 15 -30 parts by mass of nano silicon tetranitride and 10-20 parts by mass of silane coupling agent KH792 carry out electron beam irradiation grafting, the irradiation dose is 10-50kGy, stir to obtain mixture A; the mixture A and 10 - 25 parts by mass of astaxanthin are mixed, placed in a twin-screw mixer, extruded and grafted, dried and granulated. The head temperature is 160-200°C, and the screw speed is 180-220r / min to obtain the modified Polypropylene material; the modified polypropylene material and the modified nylon material are sprayed on both sides of the aluminum foil by using a supersonic plasma spraying system, the spraying current is 300-400A, and the spraying distance is 100-200mm to obtain a cor...

Embodiment 1

[0039] 80 mass parts of polypropylene (K8303), 100 mass parts of polyarylether nitrile ketone, 50 mass parts of propylene trimethoxysilane, 30 mass parts of nano silicon tetranitride and 10 mass parts of silane coupling agent KH792 are subjected to electron beam irradiation According to the grafting, the irradiation dose was 50kGy respectively, and the stirring was kept throughout the whole process to obtain the mixture A.

[0040] After the above-mentioned mixture A and 10 parts by mass of astaxanthin were fully mixed and uniform, they were placed in a twin-screw mixer, extruded and grafted, dried and granulated. Among them, the blending and extrusion temperature of the twin-screw kneader is: 180°C for the first zone, 180°C for the second zone, 200°C for the third zone, 200°C for the fourth zone, 220°C for the fifth zone, 160°C for the machine head, and 220r / min for the screw speed. A modified polypropylene material is obtained.

[0041] Then place the aluminum foil in a mix...

Embodiment 2

[0046] 120 mass parts of polypropylene (K8303), 70 mass parts of polyarylether nitrile ketone, 100 mass parts of propylene trimethoxysilane, 15 mass parts of nano silicon tetranitride and 20 mass parts of silane coupling agent KH792 are subjected to electron beam irradiation According to the grafting, the irradiation dose was 10kGy respectively, and the stirring was kept throughout the whole process to obtain the mixture A.

[0047] After the above-mentioned mixture A and 25 parts by mass of astaxanthin were fully mixed and uniform, they were placed in a twin-screw mixer, extruded and grafted, dried and granulated. Among them, the blending and extrusion temperature of the twin-screw kneader is: 170°C for the first zone, 190°C for the second zone, 190°C for the third zone, 210°C for the fourth zone, 210°C for the fifth zone, 200°C for the machine head, and 180r / min for the screw speed. A modified polypropylene material is obtained.

[0048] Then place the aluminum foil in a mi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing a corrosion-resistant lithium battery case, comprising: subjecting polypropylene, polyarylether nitrile ketone, propylene trimethoxysilane, nanometer silicon tetranitride and silane coupling agent KH792 to electron beam irradiation branch, stirred to obtain mixture A, then mixed with astaxanthin, placed in a twin-screw mixer to extrude grafted, dried, and granulated to obtain a modified polypropylene material; the modified polypropylene was sprayed with supersonic plasma The material and the modified nylon material are sprayed on both sides of the aluminum foil to obtain a corrosion-resistant lithium battery case. The present invention uses irradiation grafting reaction to introduce silane coupling agent KH792 into the main chain of polypropylene and polyarylether nitrile ketone molecules to increase the molecular weight, destroy the coiled structure of polypropylene and polyarylether nitrile ketone molecules, and increase its resistance Corrosion properties, nano-silicon tetranitride can improve the corrosion resistance of modified polypropylene materials. Secondly, the supersonic plasma spraying technology is used to improve the compactness, toughness and bonding strength of the obtained coating.

Description

technical field [0001] The invention relates to the field of polymers, in particular to a method for preparing a corrosion-resistant lithium battery case. Background technique [0002] In order to alleviate the global energy crisis and environmental problems, many countries have taken the new energy industry as the focus of sustainable development, making the research and manufacture of lithium-ion batteries very urgent and important. Lithium-ion batteries have the characteristics of small size, light weight, long cycle life, and no memory effect. They have been widely used in digital electronic products such as mobile phones and computers, and are being developed and applied to electric bicycles, electric vehicles, and energy storage power stations. Lithium-ion batteries are known as the green chemical energy in the 21st century because of their excellent performance and wide application prospects. The aluminum-plastic film outer packaging material technology for lithium-i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09D123/26C09D171/10C09D177/06C09D5/08C09D7/12B29B9/06C23C4/134C23C4/04
CPCC09D123/26B29B9/06C08K2201/011C08L2205/03C09D5/08C09D171/00C09D177/06C23C4/04C23C4/134
Inventor 魏亮
Owner ZHEJIANG DIHENG IND CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com