Monovalent cation exchange membrane and preparation method thereof

Abstract

The invention relates to a monovalent cation exchange membrane and a preparation method thereof. The monovalent cation exchange membrane is prepared from raw materials in parts by weight: 6000-7260 parts of cation migration resin, 1400-2200 parts of low-density polyethylene, 530-660 parts of polyisobutene, 370-480 parts of metallocene polyethylene, 170-230 parts of butadiene styrene rubber SEBS, 130-170 parts of butadiene styrene rubber SBS, 30-50 parts of a dispersing agent, 10-30 parts of a release agent, 10-30 parts of an ultraviolet absorbent, and 80-120 parts of a compatilizer. The low-density polyethylene has the excellent rheological property or melt fluidity, the polyisobutene can resist aging and ozone, thus a polymer with quite narrow molecular weight distribution and the stereoregular height can be prepared, and thus the resin membrane with high crystallinity, high strength and good toughness can be produced.

Description

technical field [0001] The invention relates to the field of membrane technology, in particular to a monovalent cation exchange membrane and a preparation method thereof. Background technique [0002] Ion-exchange membrane, as a kind of polymer material that can selectively pass ions, has received a lot of attention in recent years due to its advantages of environmental protection, no pollution, high efficiency and energy saving, and easy formation of modules in the process of preparation and application. In the past few decades, ion exchange membrane technology has been widely used in electrodialysis, diffusion dialysis, chlor-alkali industry, fuel cells and other fields, because cation exchange membranes have shown very obvious performance in membrane separation process and energy conversion process. Therefore, cation-exchange membranes are widely used in electrodialysis, diffusion dialysis, membrane electrolysis, fuel cells, electrochemical sensors, etc., and their develo...

AI Technical Summary

Problems solved by technology

In the past few decades, ion exchange membrane technology has been widely used in electrodialysis, diffusion dialysis, chlor-alkali industry, fuel cells and other fields, because cation exchange membranes have shown very obvious performance in membrane separation process and energy conversion process. Therefore, cation-exchange membranes are widely used in electrodialysis, diffusion dialysis, membrane electrolysis, fuel cells, electrochemical sensors, etc., and their development and improvement have been concerned by the theoretical and industrial circles. However, due to the current cation-exchange membrane There are poor molding effect, poor use environment and short service life, and the existing cation exchange membrane is expensive, the production preparation procedure is complicated, and the production efficiency is low. Over time, stability tends to degrade