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A kind of anion exchange membrane based on hexamethylenetetramine salt and preparation method thereof

A technology of hexamethylene tetramine salt and anion exchange membrane is applied in the field of hexamethylene tetramine salt-based anion exchange membrane and its preparation, which can solve the problem of hindering commercial application of anion exchange membrane, low thermal and chemical stability , affecting battery performance and other issues, to achieve the effect of simple and easy preparation method, good mechanical properties and low price

Active Publication Date: 2020-03-27
太湖县市场监督检验所(太湖县功能膜检测研究院)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The anion exchange membranes in the prior art have more or less low thermal and chemical stability, low electrical conductivity, and the cationic groups in the polymer are easily degraded under higher temperature or alkaline conditions, and the mechanical properties are poor. Poor, high swelling degree, inconvenient installation, easy to fall off and affect battery performance, these problems hinder the commercial application of anion exchange membrane

Method used

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  • A kind of anion exchange membrane based on hexamethylenetetramine salt and preparation method thereof
  • A kind of anion exchange membrane based on hexamethylenetetramine salt and preparation method thereof
  • A kind of anion exchange membrane based on hexamethylenetetramine salt and preparation method thereof

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Embodiment 1

[0027] A preparation method based on hexamethylenetetramine salt anion exchange membrane, comprising the steps of:

[0028] 1) Preparation of epoxy-substituted hexamethylenetetramine salt: dissolve 10 g of hexamethylenetetramine and 27 g of epichlorohydrin in 90 g of ethanol, reflux at 40°C for 6 hours, spin at 50°C Remove the solvent by evaporation, wash with a mixed solvent for 3 times, and then remove the solvent by rotary evaporation at 50°C; the mixed solvent is a mixture formed by mixing ethanol and ether in a mass ratio of 3:7;

[0029] 2) Preparation of base film: 3 g of epoxy-substituted hexamethylenetetramine salt and 10 g of polyurethane prepared in step 1) were dissolved in 30 g of dimethyl sulfoxide, stirred and reacted at 70° C. for 6 hours, and then Settled out in acetone, filtered, washed with water and ethanol three times respectively, and dried in a vacuum oven at 60°C for 12 hours;

[0030] 3) Ion exchange: soak the polymer film prepared in step 2) in a 5% ...

Embodiment 2

[0034] A preparation method based on hexamethylenetetramine salt anion exchange membrane, comprising the steps of:

[0035] 1) Preparation of epoxy-substituted hexamethylenetetramine salt: dissolve 10 g of hexamethylenetetramine and 28 g of epichlorohydrin in 100 g of chloroform, reflux at 45°C for 7 hours, spin at 55°C Remove the solvent by evaporation, wash with a mixed solvent for 4 times, and then remove the solvent by rotary evaporation at 55°C; the mixed solvent is a mixture formed by mixing ethanol and ether in a mass ratio of 4:7;

[0036] 2) Preparation of base film: dissolve 3.3 g of epoxy-substituted hexamethylenetetramine salt and 10 g of polyurethane in 35 g of N-methylpyrrolidone prepared in step 1), and stir and react at 74°C for 7 hours , precipitated in acetone, filtered, washed with water and ethanol for 4 times respectively, and dried in a vacuum oven at 70°C for 14 hours;

[0037] 3) Ion exchange: soak the polymer film prepared in step 2) in a 7% sodium hy...

Embodiment 3

[0041] A preparation method based on hexamethylenetetramine salt anion exchange membrane, comprising the steps of:

[0042] 1) Preparation of epoxy-substituted hexamethylenetetramine salt: 10 g of hexamethylenetetramine and 29 g of epichlorohydrin were dissolved in 120 g of carbon tetrachloride, and after reflux reaction at 52° C. for 8 hours, at 57 The solvent was removed by rotary evaporation at ℃, and then washed 5 times with a mixed solvent, and then the solvent was removed by rotary evaporation at 58 °C; the mixed solvent was a mixture formed by mixing ethanol and ether in a mass ratio of 3.5:7;

[0043] 2) Preparation of base film: dissolve 3.7 g of epoxy-substituted hexamethylenetetramine salt and 10 g of polyurethane prepared in step 1) in 37 g of N,N-dimethylformamide, and stir at 77°C After reacting for 8 hours, it was precipitated in acetone, filtered, washed with water and ethanol for 5 times respectively, and then baked in a vacuum oven at 76°C for 17 hours;

[0...

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Abstract

The invention discloses an anion exchange membrane based on hexamethylenetetramine salt and a preparation method thereof, which comprises the steps of preparation of epoxy-substituted hexamethylenetetramine salt, preparation of base membrane, ion exchange and the like. Compared with the anion exchange membrane disclosed in the prior art, the anion exchange membrane based on hexamethylenetetramine salt disclosed by the present invention has better mechanical properties, alkali resistance and chemical stability, higher conductivity, and can be used in the battery installation process. It is easy to install, and has good bonding performance with catalysts and electrode plates, thus ensuring the stability of battery performance and prolonging its service life.

Description

technical field [0001] The invention belongs to the technical field of polymer materials and relates to a fuel cell component, in particular to an anion exchange membrane based on hexamethylenetetramine salt and a preparation method thereof. Background technique [0002] In recent years, with the acceleration of global industrialization, environmental issues and energy issues are still the main factors restricting economic development and social progress. Seeking clean energy devices is an effective way to solve this problem. Anion exchange membrane fuel cells are It converts chemical energy into electrical energy with high efficiency, and has high power density, fast start-up, and no pollution. It has become the most eye-catching new generation of clean energy devices. [0003] Anion-exchange membrane fuel cells are mainly composed of three parts: electrodes, anion-exchange membranes and external circuits. Among them, anion-exchange membranes are the "heart" components of a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1041H01M8/1072
CPCH01M8/1041H01M8/1072Y02E60/50
Inventor 万章文
Owner 太湖县市场监督检验所(太湖县功能膜检测研究院)
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