Tetrafluoroethylene triple perfluorinated resin and application thereof as ion-exchange membrane reinforcing material

Abstract

The invention discloses a fluorine-containing polymer and application thereof as an ion-exchange membrane reinforcing material. The fluorine-containing polymer is tetrafluoroethylene triple perfluorinated resin with a structure of Formula (I) as shown in the attached picture, which is prepared by polymerization of tetrafluoroethylene, a perfluorinated methyl vinyl ether monomer and a perfluorinated propyl vinyl ether monomer initiated by free radicals in the presence of a dispersant, a solvent and an initiator. The fluorine-containing polymer fiber can be prepared through melt spinning with a melt-spinning device and can be woven into fiber nets through the textile technology so as to be used as reinforcing nets for proton exchange membranes and chlor-alkali ion-exchange membranes, thereby achieving the function of enhancing the membrane strength.

Description

technical field

[0001] The invention relates to fluorine-containing polymer technology, in particular to a tetrafluoroethylene ternary perfluorinated resin and its application as an ion membrane reinforced net material. Background technique

[0002] Since DuPont processed perfluorosulfonic acid resins into perfluorosulfonic acid ion exchange membranes in the 1970s and played a big role in the chlor-alkali industry and proton exchange membrane fuel cells, perfluorosulfonic acid ion exchange membranes have been widely used in countries all over the world. Research. During the installation and application of the ionic membrane, in order to make the membrane have the technical characteristics of resisting various stress impacts and maintain good dimensional stability to meet the needs of various processes, the perfluorinated ionic membrane must be reinforced with a skeleton material. In order to make the membrane meet the requirements of high performance and practicality. [0...

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