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Side-chain sulfonated polysulfone proton exchange membrane and preparing method thereof

A technology of proton exchange membrane and sulfonated polysulfone, which is applied in the field of side chain type sulfonated polysulfone proton exchange membrane and its preparation, can solve the problems of poor dimensional stability of proton exchange membrane and the like, and achieves improved dimensional stability and good dimensional stability. The effect of improving the water absorption performance

Inactive Publication Date: 2018-11-20
SHAANXI TECHN INST OF DEFENSE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a side chain type sulfonated polysulfone proton exchange membrane, which solves the problem of poor dimensional stability of the proton exchange membrane under high sulfonation degree

Method used

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  • Side-chain sulfonated polysulfone proton exchange membrane and preparing method thereof
  • Side-chain sulfonated polysulfone proton exchange membrane and preparing method thereof
  • Side-chain sulfonated polysulfone proton exchange membrane and preparing method thereof

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preparation example Construction

[0036] The method for preparing a side chain type sulfonated polysulfone proton exchange membrane of the present invention has the following specific steps:

[0037] Step 1. Prepare modified polysulfone (APS) with double bonds in the side chain. The specific steps are as follows:

[0038] Step 1.1, after mixing the polysulfone resin (PS) and chloroform uniformly, stir to dissolve the polysulfone resin completely, then add methacryloyl chloride and tin tetrachloride, and react at 50℃~60℃ for 16h to obtain Mixture a;

[0039] Among them, the mass ratio of polysulfone resin, chloroform, methacrylic acid chloride and tin tetrachloride is 1:45:0.42:0.58;

[0040] Step 1.2, after step 1.1, use a precipitant to precipitate the solid matter in the mixed liquid a, and then centrifuge the mixed liquid a to separate the solid and liquid, and wash the obtained solid material with deionized water 3 to 5 times , Put it in an oven at 40℃~60℃ and dry for 10h~15h to obtain modified polysulfone (APS) ...

Embodiment 1

[0066] The method for preparing a side chain type sulfonated polysulfone proton exchange membrane of the present invention has the following specific steps:

[0067] Step 1. Prepare modified polysulfone (APS) with double bond at the end of the side chain. The specific steps are as follows:

[0068] Step 1.1, after mixing the polysulfone resin (PS) and chloroform uniformly, stir to dissolve the polysulfone resin completely, then add methacrylic acid chloride and tin tetrachloride, and react at 50°C for 16 hours to obtain a mixed solution a ;

[0069] Among them, the mass ratio of polysulfone resin, chloroform, methacrylic acid chloride and tin tetrachloride is 1:45:0.42:0.58;

[0070] Step 1.2, after step 1.1, the solid matter in the mixed solution a is precipitated with a precipitant, and then the mixed solution a is centrifuged to separate the solid and liquid, and the obtained solid matter is washed 4 times with deionized water and put in Dry in an oven at 40°C for 10 hours to obta...

Embodiment 2

[0080] The method for preparing a side chain type sulfonated polysulfone proton exchange membrane of the present invention has the following specific steps:

[0081] Step 1. Prepare modified polysulfone (APS) with double bond at the end of the side chain. The specific steps are as follows:

[0082] Step 1.1, after mixing the polysulfone resin (PS) and chloroform uniformly, stir to dissolve the polysulfone resin completely, then add methacryloyl chloride and tin tetrachloride, and react at 52°C for 16 hours to obtain a mixed solution a ;

[0083] Among them, the mass ratio of polysulfone resin, chloroform, methacrylic acid chloride and tin tetrachloride is 1:45:0.42:0.58;

[0084] Step 1.2, after step 1.1, the solid matter in the mixed solution a is precipitated with a precipitant, and then the mixed solution a is centrifuged to separate the solid and liquid, and the obtained solid matter is washed 4 times with deionized water and put in Dry in an oven at 60°C for 12 hours to obtain m...

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Abstract

The invention discloses a side-chain sulfonated polysulfone proton exchange membrane and the preparing method thereof. The method comprises the steps of mixing and stirring polysulfone resin and chloroform uniformly, adding methacryloyl chloride and tin tetrachloride for reaction, precipitating, centrifuging, washing and drying, dissolving the mixture in 1-Methyl-2-pyrrolidinone, stirring to makeit dissolved completely, adding sodium p-styrenesulfonate and benzoyl peroxide to react, at last, dissolving the mixture in chloroform solution, casting into membrane in a culture dish, drying, removing membrane with deionized water, soaking the membrane in a soaking solution, and then washing proton exchange membrane with deionized water until the pH does not change. The side-chain sulfonated polysulfone proton exchange membrane prepared by the method can form a micro-phase separation structure with hydrophilic micro-region far away from hydrophobic micro-region because the hydrophilic groupis far away from the hydrophobic main chain, so that the PEMs keep good performance in high water absorption.

Description

Technical field [0001] The invention belongs to the technical field of polymer electrolyte membrane preparation technology, and specifically relates to a side chain type sulfonated polysulfone proton exchange membrane, and also relates to a preparation method of the proton exchange membrane. Background technique [0002] Proton exchange membrane fuel cells (PEMFCs), a green energy source, have attracted the attention of scientists from all over the world due to its fast start-up speed, high energy conversion efficiency and zero pollution emissions. At present, it has been used in fields such as new energy vehicles, rechargeable batteries, and stationary power stations. Proton exchange membranes (PEMs), as the core component of PEMFCs, play two roles. First, as a diaphragm between the anode and cathode, providing a channel for the conduction of protons; second, preventing the mixing of fuel gas and oxygen; the commercial Nafion series The membrane has serious problems such as com...

Claims

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Application Information

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IPC IPC(8): H01M8/1032H01M8/1069H01M8/1081
CPCH01M8/1032H01M8/1069H01M8/1081Y02E60/50
Inventor 乔宗文
Owner SHAANXI TECHN INST OF DEFENSE IND
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