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A kind of coordination branched nitrile rubber polymer and preparation method thereof

A technology of rubber polymer and branched nitrile, which is applied in the field of coordination branched nitrile rubber polymer and its preparation, can solve the problems of low lithium ion migration number, limited application, electrode polarization, etc. High ionic conductivity and ion migration number, the effect that meets the requirements of use

Active Publication Date: 2017-01-11
广东晟宸新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because nitrile rubber does not contain anion acceptor groups, the migration number of lithium ions is low, and the directional migration of anions is likely to cause polarization of the electrode, which limits its application in solid polymer electrolytes for lithium-ion batteries.

Method used

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  • A kind of coordination branched nitrile rubber polymer and preparation method thereof
  • A kind of coordination branched nitrile rubber polymer and preparation method thereof
  • A kind of coordination branched nitrile rubber polymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve 2.89g of polyethylene glycol monomethyl ether with a molecular weight of 750 and 0.13g of trimethyl borate into the butanone solvent, connect the water separator and the reflux of the condenser tube, place a little aluminum chloride in advance on the water separator, and the mixture Heating to 60 DEG C under stirring state and nitrogen atmosphere, after 3 hours, the temperature is raised to 80 DEG C, after continuing to react for 6 hours, the methyl ethyl ketone solution that will be dissolved with 0.20g nitrile rubber is heated in the reaction device, Keep the temperature constant and continue to stir for 3 hours, then cool down, then concentrate and dry to obtain a coordination branched nitrile rubber polymer.

Embodiment 2

[0032] Pour 50ml of benzene into a three-necked flask containing 2.00g of catechol and 1.13g of boric acid, connect the water separator and condenser tube, and heat to 110°C under the protection of nitrogen. After 5 hours of reaction, the dissolved 14.32 The benzene solution of polyethylene glycol monomethyl ether of 1 g was added in the reaction flask, continued to maintain the same temperature for 8 hours, then filtered, concentrated, and dried to obtain borate, and 1.08 g of the borate obtained was added to the dissolved 0.20 g of nitrile rubber in tetrahydrofuran solution, heated to 60° C., stirred for 2 hours, cooled, then concentrated and dried to obtain a coordination branched nitrile rubber polymer.

Embodiment 3

[0034] Pour 70ml of tetrahydrofuran (THF) solution into a three-necked flask containing 4.00g of catechol and 3.78g of trimethyl borate, stir and heat to 60°C, and after 3 hours of reaction, raise the temperature to 80°C to continue the reaction for one Hours later, add 20.00g of PEG550 dissolved THF solution into the reaction flask and continue to stir for 5 hours. After concentration, add benzene, filter, concentrate, and dry to obtain borate. 0.48g of nitrile rubber in tetrahydrofuran solution, heated to 70°C, stirred for 3 hours, cooled, then concentrated and dried to obtain coordination branched nitrile rubber polymer.

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Abstract

The invention relates to the technical field of high-molecular material, and particularly relates to a coordinated branched butadiene-acrylonitrile rubber polymer and a preparation method thereof; the polymer is obtained by carrying out a reaction of a boron based compound with butadiene-acrylonitrile rubber. Compared with the prior art, the coordinated branched butadiene-acrylonitrile rubber polymer can better promote migration of lithium ions and has relatively high ionic conductivity and ionic transference number, and thus the polymer can be used for preparation of solid polymer electrolytes of lithium ion batteries, and better meets use requirements of the lithium ion batteries.

Description

[0001] Technical field: [0002] The invention relates to the technical field of polymer materials, in particular to a coordination branched nitrile rubber polymer and a preparation method thereof. [0003] Background technique: [0004] In recent years, there is a strong demand for lithium-ion batteries with high operating voltage, high energy density, high energy efficiency, long cycle life, low self-discharge rate, low pollution, no memory effect, and safety. Traditional lithium-ion batteries mostly use organic solvents (such as propylene carbonate (PC), dimethyl carbonate (DMC), diethyl carbonate (DEC) as electrolytes, which are volatile, flammable, and have potential safety hazards of leakage . [0005] To address these issues, attempts have been made to develop a solid polymer electrolyte as a new ionic conductor to replace conventional electrolytes for Li-ion battery devices. In the 1970s, foreign countries have explored solid electrolytes. At present, polyethylene ox...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08C19/26C08F236/12
Inventor 杨树颜刘治猛焦元启刘煜平刘彪蔡卓弟
Owner 广东晟宸新材料科技有限公司
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