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Modified polyhalogenated styrene-1,3-butadiene emulsion binder as well as preparation and application thereof

A technology of halogenated styrene and butadiene, which is applied in adhesives, secondary batteries, structural parts, etc., can solve problems such as pass rate and electrochemical performance, and achieve improved adhesion, increased content, and reduced interface Effects of Impedance and Electrochemical Internal Resistance

Pending Publication Date: 2021-12-03
JIANGXI DIBIKE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For this reason, the object of the present invention is to provide a kind of modified polyhalogenated styrene-1,3-butadiene emulsion binder negative electrode binder, to solve the problem of binder bonding mechanical properties, electrical Chemical performance issues and pass rate issues

Method used

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  • Modified polyhalogenated styrene-1,3-butadiene emulsion binder as well as preparation and application thereof
  • Modified polyhalogenated styrene-1,3-butadiene emulsion binder as well as preparation and application thereof
  • Modified polyhalogenated styrene-1,3-butadiene emulsion binder as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] A preparation method of modified polyhalogenated styrene-1,3-butadiene emulsion binder, comprising the following steps:

[0064] S1. Preparation of aqueous phase pre-emulsion: 45kg of deionized water, 8kg of carbon nanotubes, 3kg of vinyltriethoxysilane, 1.5kg of ammonium dodecylbenzenesulfonate, 1kg of sodium lauryl sulfate, alkylphenol 0.5 kg of polyoxyethylene ether, 0.3 kg of isooctyl 3-mercaptopropionate, 2.8 kg of diacetone acrylamide, and 0.1 kg of potassium methyl siliconate were stirred evenly to obtain an aqueous phase pre-emulsion.

[0065] S2. Segmented polymerization reaction:

[0066] In the first stage of polymerization reaction, the polymerization tank is evacuated, the vacuum degree is -0.1MPa, and 6.22kg of water phase pre-emulsion, 4.5kg of 4-F-styrene, 4kg1,3-butadiene, 0.02kg of neodecyl peroxide are put in Cumyl peroxide, 4kg of water, wherein cumyl peroxyneodecanoate was pre-mixed with water, heated to 75°C, reacted for 0.5 hours,

[0067] In th...

Embodiment 2

[0079] A preparation method of modified polyhalogenated styrene-1,3-butadiene emulsion binder, comprising the following steps:

[0080] S1. Preparation of aqueous phase pre-emulsion: 45kg of deionized water, 8kg of nano-graphene, 3kg of vinyltriethoxysilane, 1.5kg of ammonium dodecylbenzenesulfonate, 1kg of sodium lauryl sulfate, alkylphenol 0.5 kg of polyoxyethylene ether, 0.3 kg of isooctyl 3-mercaptopropionate, 2.8 kg of diacetone acrylamide, and 0.1 kg of potassium methyl siliconate were stirred evenly to obtain an aqueous phase pre-emulsion.

[0081] S2. Segmented polymerization reaction:

[0082] In the first stage of polymerization reaction, the polymerization tank is evacuated, the vacuum degree is -0.1MPa, and 6.22kg of water phase pre-emulsion, 4.5kg of 2,4-diF-styrene, 4kg of 1,3-butadiene, 0.02kg of over Oxygenated cumyl neodecanoate, 4kg of water, wherein the cumyl peroxyneodecanoate was mixed with water uniformly in advance, heated to 75°C, and reacted for 0.5 h...

Embodiment 3

[0095] A preparation method of modified polyhalogenated styrene-1,3-butadiene emulsion binder, comprising the following steps:

[0096] S1. Preparation of aqueous phase pre-emulsion: 45kg of deionized water, 8kg of nano-amorphous carbon, 3kg of vinyltriethoxysilane, 1.5kg of ammonium dodecylbenzenesulfonate, 1kg of sodium lauryl sulfate, alkyl 0.5 kg of phenol polyoxyethylene ether, 0.3 kg of isooctyl 3-mercaptopropionate, 2.8 kg of diacetone acrylamide, and 0.1 kg of potassium methyl siliconate were stirred evenly to obtain an aqueous phase pre-emulsion.

[0097] S2. Segmented polymerization reaction:

[0098] In the first stage of polymerization reaction, the polymerization tank is evacuated, the vacuum degree is -0.1MPa, and 6.22kg of water phase pre-emulsion, 4.5kg of 2,4,6-triF-styrene, 4kg of 1,3-butadiene, 0.02 kg cumyl peroxyneodecanoate, 4kg of water, wherein cumyl peroxyneodecanoate was pre-mixed with water, heated to 75 ° C, reacted for 0.5 hours,

[0099] In the ...

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Abstract

The invention discloses a modified polyhalogenated styrene-1, 3-butadiene emulsion binder as well as a preparation method and application thereof. The method includes carrying out emulsion polymerization reaction on the modified polyhalogenated styrene formed by substituting hydrogen atoms at two or more positions on 2, 3, 4, 5 and 6 positions on the benzene ring structure of the styrene with halogen atoms and 1,3-butadiene to generate a high-molecular polymer emulsion, wherein the modified polyhalogenated styrene is di-modified polyhalogenated styrene or tri-modified polyhalogenated styrene or tetra-modified polyhalogenated styrene or full-modified polyhalogenated styrene. According to the invention, by using the modified polyhalogenated styrene, because the bonding force between strong-polarity halogen atoms and the graphite powder and the metal substrate is enhanced, and the cohesiveness is further improved; by using the nano conductive agent, the interface impedance and electrochemical internal resistance of the battery caused by a high polymer binder are reduced, and the prepared lithium ion battery has better electrochemical performance.

Description

technical field [0001] The invention belongs to the technical field of emulsion polymerization in polymer materials and the field of new energy lithium-ion battery auxiliary materials, and relates to lithium-ion battery materials, in particular to a modified polyhalogenated styrene-1,3-butadiene emulsion bonding A preparation method of an adhesive and a lithium ion battery comprising the emulsion binder. Background technique [0002] As a new energy product in the 21st century, lithium-ion batteries are widely used because of their high energy density, high discharge platform, long service life, no memory effect, wide operating temperature range, high safety performance, and environmental protection. It is applied to electric tools, smartphones, tablet computers, electric vehicles and other fields, especially in the field of new energy electric vehicles. [0003] Lithium-ion batteries are made by assembling the positive electrode of the battery, the negative electrode of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/14C08F236/10C08F220/58C08F230/08C08F2/44C08K3/04C09J125/18H01M4/62H01M4/13H01M4/139H01M10/0525
CPCC08F212/16C08F2/44C08K3/041C08K3/042C08K3/04C09J125/18H01M4/622H01M4/13H01M4/139H01M10/0525C08K2201/011C08K2201/001C08F236/10C08F220/58C08F230/085Y02E60/10
Inventor 李文曾金辉刘文平
Owner JIANGXI DIBIKE
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