Hexamethylene tetramine salt anion-exchange membrane and preparation method thereof

A technology of hexamethylene tetramine salt and anion exchange membrane is applied in the field of anion exchange membrane based on hexamethylene tetramine salt and its preparation, which can solve the problem of hindering the 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: 2018-04-13
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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  • Hexamethylene tetramine salt anion-exchange membrane and preparation method thereof
  • Hexamethylene tetramine salt anion-exchange membrane and preparation method thereof
  • Hexamethylene tetramine salt anion-exchange membrane and preparation method thereof

Examples

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Effect test

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: 10 g of hexamethylenetetramine and 27 g of epichlorohydrin were dissolved in 90 g of ethanol, and after reflux reaction 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 Precipitated 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 fil...

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: 10 g of hexamethylenetetramine and 28 g of epichlorohydrin were dissolved in 100 g of chloroform, and after reflux reaction 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...

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 3.7g of epoxy-substituted hexamethylenetetramine salt and 10g of polyurethane in 37g of N,N-dimethylformamide prepared in step 1), 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;

[0044...

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Abstract

The invention discloses a hexamethylene tetramine salt anion-exchange membrane and a preparation method thereof. The preparation method comprises the steps of preparation of epoxy substituted hexamethylene tetramine salt, preparation of a base membrane, and ion exchange and the like. Compared with the anion-exchange membrane disclosed in the prior art, the hexamethylene tetramine salt anion-exchange membrane disclosed in the invention has more excellent mechanical performance, alkali resistance and chemical stability and higher conductivity, and can be mounted easily in a battery mounting process, and high in adhesive property with a catalyst and an electrode plate, thereby ensuring battery performance stability and prolonging 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(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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