2results about How to "Simple film making process" patented technology

The invention discloses a porous substrate reinforced anion exchange membrane and a preparation method and application thereof, and relates to the technical field of anion exchange membranes. The porous substrate reinforced anion exchange membrane is prepared by the following steps: uniformly mixing a polyarylene alkylene type cationic polymer solution and a C1-C10 alcohol solvent, then coating two sides of a porous substrate with the mixture, and drying to obtain the porous substrate reinforced anion exchange membrane. And removing the solvent to obtain the product. According to the method, the porous substrate can be well infiltrated by the cationic polymer solution without pre-treating the porous substrate, so that the porous substrate reinforced anion exchange membrane with a sandwich-like structure is obtained. The film has outstanding swelling resistance and excellent mechanical properties, has good electrochemical properties, and has good application prospects in alkaline film energy conversion devices.

The application discloses a preparation method of a positively charged nanofiltration membrane based on a strong electrolyte monomer, the nanofiltration membrane and application, and relates to the technical field of membrane separation. The positively charged nanofiltration membrane for magnesium / lithium ion separation is obtained by taking a cationic strong electrolyte monomer as an aqueous monomer and performing an interfacial cross-linking reaction of the strong electrolyte monomer with trimesoyl chloride on the surface of an ultrafiltration membrane. The strong electrolyte monomer adopted in the application contains a positive charge group and a reactive amino / hydroxyl functional group at the same time, and the prepared positively charged nanofiltration membrane has a high flux and can effectively separate magnesium ions and lithium ions. The preparation method provided by the application is simple in process and easy to operate, provides a reference direction for preparing a high-performance positively charged magnesium-lithium separation nanofiltration membrane, and has a good application prospect.