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Glue for battery pole piece surface treatment and preparation process thereof

A surface treatment, battery pole piece technology, applied in the direction of adhesives, graft polymer adhesives, adhesive types, etc., can solve the problems of unfavorable large-scale production, a lot of labor, high cost, and improve the bonding ability and Toughness, anti-cracking effect, increasing hydrophilicity and toughness

Active Publication Date: 2019-04-02
森克创能(天津)新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this process is that it requires a lot of labor, low efficiency, high cost, and is not conducive to mass production.

Method used

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  • Glue for battery pole piece surface treatment and preparation process thereof
  • Glue for battery pole piece surface treatment and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Raw materials: 1 part of sodium carboxymethyl cellulose, 1 part of polyvinyl alcohol, 3 parts of acrylic acid vinyl alcohol copolymer, 1 part of short fiber and 994 parts of water.

[0023] (2) Preparation method: 1) Take the pre-prepared 10% aqueous solution of polyvinyl alcohol and monomer acrylic acid and mix them in a ratio of 1:6 according to the ratio of polyvinyl alcohol and acrylic acid reaction substance, add a certain amount of initiator, Cross-linking agent (initiator is potassium persulfate, cross-linking agent is a trifunctional aziridine cross-linking agent), after mixing evenly, pass nitrogen gas to remove oxygen for 5 minutes, seal the reaction bottle and place it in a water bath at 70°C to 80°C for 5 hours. Take out the sample, soak it with deionized water for 48 hours, change the water regularly to remove uncrosslinked monomers or polymers, finally cut the gel into thin slices, dry it in the air at room temperature, dry it in vacuum to constant weig...

Embodiment 2

[0029] (1) Raw materials: 10 parts of sodium carboxymethyl cellulose, 20 parts of polyvinyl alcohol, 15 parts of acrylic acid vinyl alcohol copolymer, 6 parts of short fiber and 949 parts of water.

[0030] (2) Preparation method: 1) Take the pre-prepared 10% aqueous solution of polyvinyl alcohol and monomer acrylic acid and mix them in a ratio of 1:6 according to the ratio of polyvinyl alcohol and acrylic acid reaction substance, add a certain amount of initiator, Cross-linking agent (initiator is potassium persulfate, cross-linking agent is a trifunctional aziridine cross-linking agent), after mixing evenly, pass nitrogen gas to remove oxygen for 5 minutes, seal the reaction bottle and place it in a water bath at 70°C to 80°C for 5 hours. Take out the sample, soak it with deionized water for 48 hours, change the water regularly to remove uncrosslinked monomers or polymers, finally cut the gel into thin slices, dry it in the air at room temperature, dry it in vacuum to constan...

Embodiment 3

[0036] (1) Raw materials: 6 parts of sodium carboxymethyl cellulose, 30 parts of polyvinyl alcohol, 18 parts of acrylic acid vinyl alcohol copolymer, 4 parts of short fiber and 942 parts of water.

[0037] (2) Preparation method: 1) Take the pre-prepared 10% aqueous solution of polyvinyl alcohol and monomer acrylic acid and mix them in a ratio of 1:6 according to the ratio of polyvinyl alcohol and acrylic acid reaction substance, add a certain amount of initiator, Cross-linking agent (initiator is potassium persulfate, cross-linking agent is a trifunctional aziridine cross-linking agent), after mixing evenly, pass nitrogen gas to remove oxygen for 5 minutes, seal the reaction bottle and place it in a water bath at 70°C to 80°C for 5 hours. Take out the sample, soak it with deionized water for 48 hours, change the water regularly to remove uncrosslinked monomers or polymers, finally cut the gel into thin slices, dry it in the air at room temperature, dry it in vacuum to constant...

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Abstract

Glue for battery pole piece surface treatment is provided. The glue includes, by mass, 0.1-2% of carboxymethylcellulose sodium, 0.1-4% of polyvinyl alcohol, 0.3-3% of acrylic acid-vinyl alcohol copolymer, and 0.1-1% of chopped fibers, with the balance being water. A preparation process of the glue is also provided. The hydrophilicity and flexibility of a battery pole piece coated with the glue areobviously improved than those of a battery pole piece coated with tissue paper, and the battery pole piece coated with the glue is free of cracking and powder falling. In addition, a process of applying the glue on the surface of a battery pole piece can replace the original process of wrapping a battery pole piece with tissue paper, which can greatly improve the production efficiency and is beneficial to large-scale production.

Description

technical field [0001] The invention relates to the technical field of glue for battery pole pieces, in particular to a battery pole piece surface treatment glue and a preparation process thereof. Background technique [0002] Zinc-nickel battery is the secondary battery product with the highest energy among alkaline water-based batteries at present. With the continuous improvement and improvement of cycle life, zinc-nickel power battery will become the application technology and The preferred product of engineering technology. The battery pole piece manufacturing process is the basic process for manufacturing zinc-nickel power batteries. The specific process for the production of battery pole pieces is to prepare a slurry by mixing active materials, binders and conductive agents, and then coat it on the copper current collector, and form pole pieces after drying. The coating of pole piece particles is compacted and dense. Cutting or slitting after melting is ready for use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/00C09J129/04C09J11/08C08F261/04C08F220/06
CPCC08F261/04C08L2203/20C08L2205/035C08L2205/16C09J11/08C09J129/04C09J151/003C08L29/04C08L1/286C08L51/003C08F220/06
Inventor 许文武占耀冯忠厚
Owner 森克创能(天津)新能源科技有限公司
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