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Method for preparing comb-type polyether polyurethane macromolecular ionic liquid material

A technology of polyether polyurethane and ionic liquid, which is applied in the field of polymer materials, can solve the problems of low glass transition temperature, low ion density, low conductivity, etc., and achieve the effect of simple method

Inactive Publication Date: 2011-07-20
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there are still some problems in the application of the above-mentioned polymer solid electrolyte materials. The main chains of the polymer ionic liquid solid electrolytes currently studied are mostly carbon chains. Due to the higher glass transition temperature and lower ion density , making the conductivity lower

Method used

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  • Method for preparing comb-type polyether polyurethane macromolecular ionic liquid material
  • Method for preparing comb-type polyether polyurethane macromolecular ionic liquid material
  • Method for preparing comb-type polyether polyurethane macromolecular ionic liquid material

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Experimental program
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Effect test

Embodiment 1

[0040] According to the molar ratio of N-methylimidazole and chloroethanol being 2, add N-methylimidazole and chloroethanol into the reaction bottle, and react at 80° C. for 24 hours under the protection of nitrogen. The reactant was washed with ether to obtain N-methyl N'-hydroxyethyl imidazolium chloride ionic liquid.

[0041] After the hydroxyl-terminated polyepichlorohydrin with a molecular weight of 1000 is protected with acetic anhydride under the action of pyridine, the N-methyl N'- Hydroxyethyl imidazolium chloride ionic liquid and sodium hydride, with acetone as solvent, reflux reaction for 10 hours under the protection of nitrogen. After adding water to the reaction system to remove the protection, it is extracted with dichloromethane to obtain the hydroxyl-terminated polyepichlorohydrin grafted with N-methyl N'-ethyl imidazolium chloride ionic liquid.

[0042]According to the national standard GB-T12008.3-1989 method, measure the number of moles of hydroxyl groups ...

Embodiment 2

[0044] According to the ratio that the mol ratio of N-methylimidazole and monochlorodiethylene glycol is 2, add N-methylimidazole and monochlorodiethylene glycol in the reaction flask, under nitrogen protection, React at 80°C for 24 hours. The reactant was washed with ether to obtain N-methyl N'-hydroxyethoxyethyl imidazolium chloride ionic liquid.

[0045] After the hydroxyl-terminated polyepichlorohydrin with a molecular weight of 1000 is protected with acetic anhydride under the action of pyridine, the N-methyl N' -Hydroxyethoxyethyl imidazolium chloride ionic liquid and sodium hydride, with acetone as solvent, reflux reaction under nitrogen protection for 10 hours. After adding water to the reaction solution to remove the protection, it is extracted with dichloromethane to obtain the ionic liquid of hydroxyl-terminated polyepichlorohydrin grafted with N-methyl N'-oxyethyl ethyl imidazolium chloride.

[0046] According to the national standard GB-T12008.3-1989 method, mea...

Embodiment 3

[0048] According to the ratio that the mol ratio of N-methylimidazole and monochlorotriethylene glycol is 2, add N-methylimidazole and monochlorotriethylene glycol in the reaction flask, under nitrogen protection, React at 80°C for 24 hours. The reactant was washed with ether to obtain N-methyl N'-hydroxyethoxyethoxyethyl imidazolium chloride ionic liquid.

[0049] After the hydroxyl-terminated polyepichlorohydrin with a molecular weight of 1000 is protected with acetic anhydride under the action of pyridine, the N-methyl N' -Hydroxyethoxyethoxyethyl imidazolium chloride ionic liquid and sodium hydride, with acetone as solvent, reflux reaction for 10 hours under nitrogen protection. After adding water to the reaction liquid to remove the protection, it is extracted with dichloromethane to obtain the ionic liquid of hydroxyl-terminated polyepichlorohydrin grafted with N-methyl N'-ethoxyethoxyethyl imidazolium chloride.

[0050] According to the national standard GB-T12008.3-1...

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Abstract

The invention provides a method for preparing a comb-type polyether polyurethane macromolecular ionic liquid material by hydroxy-terminated polyepichlorohydrin (PECH), mainly comprising four steps, wherein, the main chain and the short side chain of the obtained macromolecules both take polyether structures. A polyether chain is a flexible chain, with low glass transition temperature; the ether bonds on the main chain and the side chain can complex with some metal ions; and the side chain also comprises ionic liquid groups, thereby having higher conductivity and good mechanical property and wide range of applications. The prepared comb-type polyether polyurethane macromolecular ionic liquid material can realize adjustable conductivity and electrochemical windows of the material by compounding with small molecular ionic liquid or inorganic salt. The comb-type polyether polyurethane macromolecular ionic liquid material has the characteristics of flexible, transparent and easy molding.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a method for preparing a comb-shaped polyether polyurethane macromolecular ionic liquid material from hydroxyl-terminated polyepichlorohydrin. Background technique [0002] Ionic liquids, also known as room temperature molten salts, are liquid organic electrolytes composed entirely of anions and cations at room temperature. This type of electrolyte has good conductivity, wide electrochemical window, non-volatile and non-flammable in a wide temperature range, and is an electrolyte for batteries and electrochemical capacitors, with a good application prospect. However, liquid electrolytes are prone to problems such as electrode corrosion, electrolyte leakage, and short life. Therefore, it is very important to explore polymer solid electrolytes to replace liquid electrolytes. [0003] Combining ionic liquids with polymers, bonding groups with ionic liquid structures to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/50C08G18/66
Inventor 张玉清岑非非姚大虎陆昶赫玉欣潘炳力高喜平
Owner HENAN UNIV OF SCI & TECH
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