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Preparation method of high-boiling point salt type perfluor sulfoacid resin solution

A technology of perfluorosulfonic acid resin and high boiling point solvent, which is used in fuel cell parts, fuel cells, electrochemical generators, etc., can solve the problem that the membrane is easy to become brittle, the mechanical strength is not ideal, and it is not suitable for the preparation of proton exchange membrane. And other issues

Active Publication Date: 2012-07-18
SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the Nafion series solution of DuPont Company of the United States is mainly sold on the market. The solvent used in it is a water-isopropanol system, and this solution is not suitable for the preparation of proton exchange membranes directly. Strength is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] will contain a sulfonyl functional group (—SO 2 F) The perfluorosulfonic acid resin (manufactured by Dongyue Shenzhou Co., Ltd.) was added with a mass fraction of 20% NaOH solution, soaked for 16 hours, and the soaking temperature was 70°C. Then the treated resin was placed in a container, washed with pure water to pH = 7, the washing temperature was 60°C, and dried at 80°C to obtain a dry Na-type perfluorosulfonic acid resin.

[0030] Take 45g of dry Na-type perfluorosulfonic acid resin and place it in an autoclave, add 400ml of N,N-dimethylformamide (DMF), protect it with nitrogen gas, turn on mechanical stirring, control the temperature at 130°C, and keep it for 4 hours, then you can A Na-type DMF perfluorosulfonic acid resin solution was obtained with a concentration of 10.36%.

Embodiment 2

[0032]will contain a sulfonyl functional group (—SO 2 F) The perfluorosulfonic acid resin (manufactured by Dongyue Shenzhou Co., Ltd.) was added with 38% NaOH solution, soaked for 9 hours, and the soaking temperature was 45°C. Then the treated resin was placed in a container, washed with pure water to pH = 7, the washing temperature was 25° C., and dried at 50° C. to obtain a dry Na-type perfluorosulfonic acid resin.

[0033] Take 45g of dry Na-type perfluorosulfonic acid resin and place it in an autoclave, add 400ml of N-methylpyrrolidone (NMP), protect it with argon, turn on mechanical stirring, control the temperature at 180°C, and keep it for 6 hours to obtain Na Type DMF perfluorosulfonic acid resin solution, the concentration is 10.37%.

Embodiment 3

[0035] will contain a sulfonyl functional group (—SO 2 F) The perfluorosulfonic acid resin (manufactured by Dongyue Shenzhou Co., Ltd.) was added with a mass fraction of 15% NaOH solution, soaked for 46 hours, and the soaking temperature was 90°C. Then the treated resin was placed in a container, washed with pure water to pH = 7, the washing temperature was 90°C, and dried at 120°C to obtain a dry Na-type perfluorosulfonic acid resin.

[0036] Take 45g of dry Na-type perfluorosulfonic acid resin and place it in an autoclave, add 400ml of N,N-dimethylacetamide (DMAc), pass through xenon protection, turn on mechanical stirring, control the temperature at 210°C, and keep it for 20 hours, that is A Na-type DMF perfluorosulfonic acid resin solution can be obtained with a concentration of 10.35%.

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PUM

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Abstract

The invention relates to a preparation method of high-boiling point salt type perfluor sulfoacid resin solution, which comprises the following steps: adopting strong base for processing the perfluor sulfoacid resin so that resin functional groups are converted into form-R types with alkali metal ions; then, placing the R type perfluor sulfoacid resin into a container to be maintained for 2 to 24 hours at 110 DEG C to 250 DEG C under the protection of inert gas; and obtaining the R type perfluor sulfoacid resin solution. The invention adopts a high-boiling point solvent, the obtained solution can be directly used for preparing fuel battery membranes, in addition, the technology in the solution preparation process is simple, the equipment requirement is low, and the operation is simple.

Description

technical field [0001] The invention relates to a preparation method of a perfluorosulfonic acid resin solution, in particular to a preparation method of a high boiling point salt type perfluorosulfonic acid resin solution. Background technique [0002] Fuel Cell (FC) is a clean, efficient and quiet electrochemical power generation device. Perfluorosulfonic acid resin proton exchange membrane fuel cell has low operating temperature, high specific power, environmental friendliness, and safe and convenient fuel storage and transportation. It has good application prospects in mobile appliances, automobiles and other industries. As a key component of fuel cells, the preparation of perfluorosulfonic acid proton exchange membranes has attracted the attention of researchers all over the world, and a qualified perfluorosulfonic acid resin solution has been prepared. is the key. [0003] At present, the Nafion series solution of DuPont Company of the United States is mainly sold on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/02C08J5/20H01M8/02H01M8/10H01M8/1023H01M8/1039
CPCY02E60/522Y02E60/50
Inventor 王学军张永明
Owner SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
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