Method of manufacturing low permeation ion exchange membrane

Abstract

The invention discloses a making method of low-ion permeating exchange film, which comprises the following steps: transmitting high-pressure polyethylene, polyvinylbutene, coupler, antioxidant, initiator and dye into high-speed blender to mix evenly according to proportion; sending the composite material into smelting machine; adding lubricant, stripper and ion exchange resin powder to melt under 110-130 deg.c for 5-10 min; blending ion exchange resin powder and macromolecular adhesive evenly; drawing diaphragm with thickness at 0.4-0.8mm through two rolls; cutting diaphragm into piece at 800X1600mm; controlling pressure between 10 and 30 Mpa; pressing for 40-50 min; cooling to obtain the product as polyester fibre or nylon material.

Description

technical field [0001] The invention relates to an ion-exchange membrane, in particular to the improvement of a formula and a manufacturing method of a low-permeability ion-exchange membrane. Background technique [0002] Ion exchange membrane is a key component of electrodialyzer, which has certain selectivity and conductivity. It is widely used in the electrochemical department to separate different types of ions, such as seawater, desalination of brackish water, desalination and concentration of solutions, electrolysis production Recovery and purification of inorganic compounds and radioactive elements, softening and desalination of boiler water, treatment of industrial products such as electronics, medicine, chemical industry, food, coal, and metallurgy. Ion exchange membranes with different structures and different methods have obvious differences in ion-selective exchange capacity, low resistance, water permeability, and chemical and mechanical stability, and in the fi...

AI Technical Summary

Problems solved by technology

This is the so-called "running material" and "water ingress" phenomenon. The loss of products due to running out of material will not produce ultra-pure water in the EDI device, and the water inflow will increase the energy consumption of post-treatment.

And in the process of electrodialysis concentration, no high-concentration electrolyte liquid should be produced

In practical applications, it is difficult to effectively solve these problems when using ordinary heterogeneous ion exchange membranes, but when using low-permeability membranes, the phenomena of "running material" and "water ingress" can be effectively improved, reducing the loss of products. energy consumption, which provides a technical approach for advocating high resource utilization and energy-saving clean production

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