Supercharge Your Innovation With Domain-Expert AI Agents!

Ion exchange membrane casting continuous forming method and device

An ion exchange membrane and molding method technology, which is applied to flat products, household appliances, other household appliances, etc., can solve the problems of high rejection rate, poor film thickness uniformity, low ion exchange membrane production efficiency, etc., and improve the product yield. , The requirements are not high, the effect of shortening the production cycle

Inactive Publication Date: 2019-08-20
CHAOYANG HUADING ENERGY STORAGE TECH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a casting continuous forming method and device for ion exchange membranes to solve the problems of low production efficiency, high reject rate and poor uniformity of membrane thickness in preparing ion exchange membranes by traditional casting methods.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ion exchange membrane casting continuous forming method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In this example, 8 kg of perfluorosulfonic acid resin and 0.5 kg of polyvinylidene fluoride (PVDF) resin were dissolved in 30 L of dimethylacetamide (DMAC), heated and stirred at 220 ° C for 6 hours to form a film-forming slurry. Vacuum degassing was carried out under stirring. Put the film-making slurry into the feeding system, enter the casting machine through the connected pipeline, and control the thickness of the solution through the scraper, and enter the film-making slurry into the three The temperature section is solidified and formed, and finally wound up and cut to obtain a perfluorosulfonic acid ion exchange membrane. The thickness of the ion exchange membrane is 150 microns.

Embodiment 2

[0029] In this example, 10 kg of polybenzimidazole resin was dissolved in 40 L of dimethylformamide (DMF), stirred and dissolved at room temperature for 7 hours to form a film-forming slurry, and stirred and vacuumed for defoaming. Put the film-making slurry into the feeding system, enter the casting machine through the connected pipeline, and control the thickness of the solution through the scraper, and enter the film-making slurry into the three The temperature section is solidified and formed. After forming, the film is put into a phosphoric acid aqueous solution with a concentration of 70wt% for treatment at 70°C. Finally, it is wound and cut to obtain an ion-exchange membrane. The thickness of the ion-exchange membrane is 100 microns.

Embodiment 3

[0031]In this example, 10 kg of polyvinylidene fluoride resin was dissolved in 40 L of dimethylacetamide (DMAC), stirred and dissolved at 80°C for 8 hours to form a film-forming slurry, and 500 mL of the additive polyvinyl alcohol resin (PVA) was added to the In the above solution, stir for 2 hours and oscillate in an ultrasonic wave to refine the solution and drive away the tiny bubbles therein, and carry out stirring and vacuum degassing. Put the film-making slurry into the feeding system, enter the casting machine through the connected pipeline, and control the thickness of the solution through the scraper, and enter the film-making slurry into the three The temperature section is solidified and formed. After heat treatment, the membrane enters the mixed solution of extractant ethanol and deionized water for extraction, and then enters the cleaning tank for cleaning with deionized water to prepare a porous membrane. Finally, it is hot-pressed and cut to obtain a porous membr...

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

PUM

No PUM Login to View More

Abstract

The invention relates to an ion exchange membrane casting continuous forming method and device, and belongs to the field of material science. Firstly, film-forming resin and polymer or inorganic particle filler are dissolved and dispersed in an organic solvent, the concentration of the solution is adjusted, and then defoaming is carried out to form film-forming slurry; putting the film-making slurry into a feeding system, the film-making slurry enters a casting machine through a connected pipeline, solidifying and forming are performed on the casting machine by changing a temperature field andan electric field, and finally winding and cutting are carried out to obtain an ion exchange membrane. The device has the advantages that continuous production is realized, the production period is shortened, the finished film product rate is improved and the cost is reduced; the use amount of organic matters is small, and the casting machine is equipped with a solvent recovery device to reduce environmental pollution; and operation is simple, and requirements on equipment and operators are not high.

Description

technical field [0001] The invention relates to an ion-exchange membrane flow-casting continuous forming method and device, belonging to the field of material science. Background technique [0002] Ion exchange membrane is a film with ion exchange performance, mainly made of polymer materials. It is similar to ion exchange resins, both of which connect an active group to the polymer skeleton, but the mechanism, mode and effect of action are different. Ion-exchange membranes are widely used, for example, they can be assembled into electrodialyzers for desalination of brackish water and concentration of salt solutions, as well as desalination of glycerin and polyethylene glycol, and separation of various ions from radioactive elements and isotopes , fractionation of amino acids, etc. In addition, ion exchange membranes are also used in the purification of organic and inorganic compounds, the treatment of radioactive waste liquid in the atomic energy industry and the preparat...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B29C41/24B29C41/34B29C41/46B29C41/52B29L7/00
CPCB29C41/24B29C41/34B29C41/46B29C41/52B29L2007/00
Inventor 赵丽娜肖伟陈晖彭海泉吴慧哲
Owner CHAOYANG HUADING ENERGY STORAGE TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com