Cross-linkable fluorine-containing sulphonated polyarylether compound and preparation method thereof

A technology for sulfonated polyarylethers and compounds, which is applied in the field of crosslinkable fluorine-containing sulfonated polyarylethers and their preparations, can solve the problems of high environmental pollution, difficulty in accurately controlling the ion exchange capacity of products, and many molecular design strategies , to achieve high proton conductivity, adjustable ion exchange capacity, and low price
CN107573501AActive Publication Date: 2018-01-12FUZHOU UNIV
3 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUZHOU UNIV
Publication Date
2018-01-12

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention belongs to the field of proton exchange membrane materials, and particularly relates to a cross-linkable fluorine-containing sulphonated polyarylether compound and a preparation method thereof. The preparation method comprises the following steps: first, performing polycondensation on decafluorobiphenyl, 2,2'-diallylbisphenol A and bisphenol A to prepare a cross-linkable fluorine-containing polyarylether compound; then, enabling the cross-linkable fluorine-containing polyarylether compound to react with a certain amount of sodium 4-hydroxybenzenesulfonate, so that sulphonic groups are introduced into a polymer; finally, preparing to obtain the cross-linkable fluorine-containing sulphonated polyarylether compound. The cross-linkable fluorine-containing sulphonated polyarylether compound can be cast into a membrane by using a solution. The obtained proton exchange membrane has the characteristics of simple preparation process, high heat stability, high oxidation stability,high proton conductivity, good mechanical properties and the like. A cross-linking type proton exchange membrane can be prepared by adding a free radical initiator, so that the solvent resistance is improved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a crosslinkable fluorine-containing sulfonated polyarylether compound and a preparation method thereof, belonging to the field of proton exchange membrane materials. Background technique

[0002] Proton exchange membranes have important applications in proton exchange membrane fuel cells, all-vanadium redox flow batteries, electrodialysis, hydrogen production by electrolysis of water, and seawater desalination. The currently widely used commercial proton exchange membrane is mainly the perfluorosulfonic acid-based Nafion membrane produced by DuPont of the United States, because it has good oxidation stability and proton conductivity. However, the production cost of Nafion membrane is relatively high, the production process is more complicated, the mechanical performance is low under high temperature and high humidity, and the fuel permeability is high, these shortcomings limit its large-scale application.

[0003] Sulfonated p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More