Supercharge Your Innovation With Domain-Expert AI Agents!

Ion exchange membrane, manufacturing method of ion exchange membrane, and electrolytic cell

An ion-exchange membrane and ion-exchange technology, applied in the direction of chemical instruments and methods, organic diaphragms, synthetic resin layered products, etc., can solve the problems of no cathode activity and achieve stable electrolytic performance with less impact

Active Publication Date: 2014-03-26
ASAHI KASEI KK
View PDF10 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In addition, Patent Document 2 proposes an ion exchange membrane provided with a gas- and liquid-permeable porous layer containing titanium, zirconium, niobium, tantalum, hafnium, tin, vanadium, manganese, molybdenum, tungsten, aluminum, Chromium, gallium, cerium, thorium, selenium, iron, yttrium, rare earths, indium, nickel, silver, cobalt, beryllium oxides, nitrides, carbides and their mixtures, not cathodically active

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, manufacturing method of ion exchange membrane, and electrolytic cell
  • Ion exchange membrane, manufacturing method of ion exchange membrane, and electrolytic cell
  • Ion exchange membrane, manufacturing method of ion exchange membrane, and electrolytic cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0197] As a reinforcing core material, a polytetrafluoroethylene (PTFE) 100-denier flat yarn twisted at 900 times / m was used (hereinafter referred to as PTFE thread). As the sacrificial yarn of the warp, a polyethylene terephthalate (PET) with 35 denier and 8 filaments twisted 200 times / m (hereinafter referred to as PET yarn) was used. In addition, as the sacrificial yarn of the weft, a polyethylene terephthalate (PET) with 35 denier and 8 filaments twisted at 200 twists / m was used. First, the number of PTFE threads was 24 / inch, and two sacrificial threads were arranged between adjacent PTFE threads to perform flat weaving to obtain a woven fabric with a thickness of 100 μm.

[0198] Next, using CF 2 =CF 2 with CF 2 =CFOCF 2 CF(CF 3 )OCF 2 CF 2 COOCH 3 The copolymer prepared ion exchange capacity is the polymer (A1) of dry resin of 0.84mg equivalent / g, utilizes CF 2 =CF 2 with CF 2 =CFOCF 2 CF(CF 3 )OCF 2 CF 2 SO 2 Copolymer of F A polymer (B1) of dry resin hav...

Embodiment 2

[0206] In Example 1, the dispersion by the ball mill was adjusted until the average particle diameter of the zirconia particles in the suspension was 1.12 μm to obtain a suspension; except that, an ion exchange membrane was produced in the same manner as in Example 1. .

[0207] The dried coating of the ion-exchange membrane was measured by fluorescent X-ray measurement, and the coating density was measured per 1 cm 2 0.5mg in. In addition, the specific surface area of ​​the coating obtained by scattering measured by SAXS was 2.2m 2 / g.

[0208] The ion-exchange membrane with the dry coating was wetted with 2% by weight of sodium bicarbonate, and then the ion-exchange membrane was used to measure the tolerance of impurities in finite-gap electrolysis. As a result, the reduction in current efficiency was 0.27% / day, showing relatively High impurity durability. The results are listed in Table 1.

Embodiment 3

[0210] In Example 1, the zirconia particles were changed to particles with a primary particle diameter of 2.50 μm, and the dispersion by a ball mill was adjusted until the average particle diameter of the zirconia particles in the suspension was 1.80 μm to obtain a suspension. ; Except that, an ion exchange membrane was produced in the same manner as in Example 1.

[0211] The dried coating of the ion-exchange membrane was measured by fluorescent X-ray measurement, and the coating density was measured per 1 cm 2 0.5mg in. In addition, the specific surface area of ​​the coating obtained by scattering measured by SAXS was 1.8m 2 / g.

[0212] The ion-exchange membrane with the dry coating was wetted with 2% by weight of sodium bicarbonate, and then the ion-exchange membrane was used to measure the tolerance of impurities in finite-gap electrolysis. As a result, the reduction in current efficiency was 0.24% / day, showing Higher impurity durability. The results are listed in Tab...

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

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
particle sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to an ion exchange membrane, a manufacturing method of ion exchange membrane, and an electrolytic cell. An object of the invention is to provide an ion exchange membrane with electrolysis performance less influenced by impurities in an electrolyte solution and capable of playing stable electrolysis performance. The ion exchange membrane provided by the invention comprises a membrane main body and a coating, wherein the membrane main body comprises a fluorine-containing polymer with ion exchange radicals; and the coating is disposed on at least one surface of the membrane body. The coating contains inorganic particles and an adhesive; and a specific surface area of the coating is 0.1 m<2 / g>-10 m<2 / g>.

Description

technical field [0001] The present invention relates to an ion-exchange membrane, a method for producing the ion-exchange membrane, and an electrolytic cell equipped with the ion-exchange membrane. Background technique [0002] Fluorine-containing cation exchange membranes are excellent in heat resistance and chemical resistance, and are therefore used as electrolytic cation exchange membranes for producing chlorine and alkali by electrolysis (electrolysis) of alkaline chlorides or the like. In addition, it is also used as a separator for ozone generation, a separator for fuel cells, water electrolysis, hydrochloric acid electrolysis, etc., and the like. [0003] Among them, in the electrolysis of salt water and the like to produce sodium hydroxide and alkaline chlorides of chlorine and hydrogen, the following cation exchange membrane is generally used. A carboxylic acid layer with exchange groups and a low-resistance sulfonic acid layer with sulfonic acid groups as ion exc...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C25B13/08B32B27/14
Inventor 角佳典服部行久
Owner ASAHI KASEI KK
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