Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Enhanced multi-layer fluorine-containing ion exchange membrane

A technology of ion-exchange membrane and ion-exchange resin, applied in collectors/separators, electrical components, circuits, etc., can solve the problems of reduced membrane strength, decreased perfluoropolymer equivalent value, and low mechanical strength

Active Publication Date: 2011-06-08
SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they also have many defects: such as poor dimensional stability, low mechanical strength, poor chemical stability, etc.
Generally speaking, when the ion exchange capacity increases, the equivalent value of perfluoropolymer decreases (equivalent value EW value decreases, ion exchange capacity IEC=1000 / EW) and the strength of the membrane also decreases

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
  • Enhanced multi-layer fluorine-containing ion exchange membrane
  • Enhanced multi-layer fluorine-containing ion exchange membrane
  • Enhanced multi-layer fluorine-containing ion exchange membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Placing PTFE fibers in SiCl 4 After 1 hour in the atmosphere, the temperature was raised to 110° C., and kept for 1 hour. After cooling to 60° C., water spray treatment was performed to obtain silica-modified polytetrafluoroethylene fibers.

Embodiment 2

[0070] Placing E-glass fibers in Ti(OEt) 4 In the water mixing system, concentrated ammonia water is added under stirring, hydrolyzed and left to stand to obtain the alkali-free glass fiber modified by titanium dioxide.

Embodiment 3

[0072] Triethyl phosphate and tetraethyl orthosilicate (1:100 mass ratio) were mixed, water and concentrated ammonia were added and the gel was allowed to stand for 12 hours, and then the gel was used electrospinning or spinning technology to obtain phosphoric acid-modified diethyl ether. Silica fibers.

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
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a fiber-enhanced multi-layer fluorine-containing ion exchange membrane which is stable to free radicals, belonging to the field of functional polymer composite materials. The membrane is a multi-layer structure membrane which consists of fluorine-containing ion exchange resin, enhancing fibers and free radical removing substances. The prepared ion exchange membrane has high proton conductivity, high mechanical performance, strong resistance to the free radicals, and mechanical stability and can effectively prevent the penetration of hydrogen and methanol.

Description

technical field [0001] The invention belongs to the field of functional polymer composite materials, and relates to a fiber-reinforced multilayer anti-radical fluorine-containing ion exchange membrane and a preparation method thereof. Background technique [0002] Proton exchange membrane fuel cell is a power generation device that directly converts chemical energy into electrical energy through electrochemical means, and is considered to be the preferred clean and efficient power generation technology in the 21st century. Proton exchange membrane (PEM) is the key material of proton exchange membrane fuel cell (PEMFC). [0003] The perfluorosulfonic acid proton exchange membranes currently used have good proton conductivity and chemical stability at lower temperatures (eg, 80° C.) and higher humidity. However, they also have many defects: such as poor dimensional stability, low mechanical strength, and poor chemical stability. The water absorption rate of the membrane and ...

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 Patents(China)
IPC IPC(8): H01M8/02H01M2/16C08L27/18C08L27/12C08K9/02C08K7/14C08K3/28C08K3/26C08K3/30C08K3/32C08K3/22H01M8/0202
CPCY02E60/50Y02E60/12
Inventor 张永明唐军柯刘萍张恒王军
Owner SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com