Perfluorinated ion exchange resin and preparation method thereof

A technology for exchanging resin and perfluorinated ions, applied in the field of perfluorinated ion exchange resin and its preparation, to achieve the effects of flexible operation, high mechanical strength and low membrane resistance

Active Publication Date: 2014-07-02
SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
View PDF19 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, US5654109, US5246792 and other patents disclose the use of double-layer material composite membranes to meet the requirements of high electrical conductivity and high strength at the same time, but there are still certain defects in the uniformity of ion conduction and the improvement of electrical conductivity.

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
  • Perfluorinated ion exchange resin and preparation method thereof
  • Perfluorinated ion exchange resin and preparation method thereof
  • Perfluorinated ion exchange resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: a kind of preparation method of perfluorinated ion exchange resin, the steps are as follows:

[0038] Prepare precursor resin:

[0039] Wash the 10L reactor and add 6L of deionized water, 100ml of an aqueous solution containing 8g of ammonium perfluorooctanoate, 100ml of a sodium borate solution with a mass concentration of 3%, start the stirring device, and replace it three times. After testing, the oxygen content in the reactor is qualified (less than 5ppm ), vacuumize, and add 500g of sulfonyl fluoride pendant vinyl ether monomer 1 (structural formula: CF 2 =CF-O-CF 2 -CF 2 -SO 2 F) and 500g sulfonyl fluoride pendant vinyl ether monomer 2 (structural formula is: CF 2 =CF-OCF 2 -CF(CF 3 )-O-CF 2 CF 2 SO 2 After F), fill the reaction kettle with tetrafluoroethylene monomer and keep the pressure to 2.3MPa, raise the temperature to 65°C, add 100g of ammonium persulfate aqueous solution (initiator solution) with a mass concentration of 3% with a met...

Embodiment 2

[0046] Embodiment 2: a kind of preparation method of perfluorinated ion exchange resin comprises the following steps:

[0047] Prepare the precursor resin with sulfonyl fluoride side group according to the method of embodiment 1, the difference is: add 600g sulfonyl fluoride monomer 1 (CF 2 =CF-O-CF 2 CF 2 -SO 2 F) and 300 g of sulfonyl fluoride monomer 2 (CF 2 =CF-O-CF 2 CF (CF 3 )-O-CF 2 CF 2 SO 2 F), and maintain a reaction pressure of 1.8MPa for polymerization reaction to obtain a precursor resin.

[0048] Precursor resin data:

[0049] by F 19 NMR and IR analysis confirmed that it was a ternary polymer. According to the integrated value of fluorine NMR, the molar percentage of tetrafluoroethylene contained in the polymer structure was 58.1%. 2 =CF-O-CF 2 -CF 2 -SO 2 F) The molar percentage is 33.4%, containing sulfonyl fluoride group enyl ether monomer (CF 2 =CF-OCF 2 -CF(CF 3 )-O-CF 2 CF 2 SO 2 F) The mole percentage is 8.5%, in the overall resin -SO ...

Embodiment 3

[0054] Embodiment 3: a kind of preparation method of perfluorinated ion exchange resin comprises the following steps:

[0055]Clean the reactor and add 6L of deionized water, 100ml of an aqueous solution containing 10g of sodium dodecylsulfonate, start the stirring device, vacuumize, and replace with high-purity nitrogen for three times. After testing, the oxygen content in the reactor is below 10ppm , vacuumize, add 1000g sulfonyl fluoride pendant vinyl ether monomer 1 (CF 2 =CF-O-CF 2 -CF 2 -SO 2 After F), fill the reaction kettle with tetrafluoroethylene monomer pressure to 2.0MPa, raise the temperature to 55°C, and add 100g of azodibutylamidine hydrochloride aqueous solution (initiator solution) with a mass concentration of 4.5% with a metering pump , to initiate the polymerization reaction, continue to feed tetrafluoroethylene monomer to keep the reaction pressure at 2.0MPa, add 30g of initiator solution to the system every 30min, stop adding the initiator after reacti...

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
mechanical strengthaaaaaaaaaa
decomposition temperatureaaaaaaaaaa
decomposition temperatureaaaaaaaaaa
Login to view more

Abstract

The invention provides a perfluorinated ion exchange resin and a preparation method thereof. The perfluorinated ion exchange resin has the structure shown in formula (I): the preparation method of the perfluorinated ion exchange resin comprises the grafting reaction of the precursor resin and the functional monomer under certain conditions in whole or in part; Perfluorinated ion exchange resins can meet the requirements of high ion exchange capacity and high mechanical strength at the same time. Fluoride ion exchange resin.

Description

technical field [0001] The invention belongs to the technical field of fluorine-containing polymer materials, and relates to a perfluorinated ion-exchange resin with high exchange capacity and a preparation method thereof, in particular to a perfluorinated ion-exchange resin with a perfluorosulfonimide group in the side chain Resins and methods for their preparation. Background technique [0002] Since DuPont processed perfluorosulfonic acid resins into perfluorosulfonic acid ion exchange membranes in the 1970s and applied the membranes in the chlor-alkali industry and proton exchange membrane fuel cells, perfluorinated ion exchange resins have been widely used in countries all over the world. Extensive research. [0003] Perfluorinated ion-exchange membrane materials are suitable for electrochemical separators due to their stable chemical degradation resistance and ion conductivity. US3282875 is the first document published by DuPont about the synthesis of sulfonyl fluori...

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): C08F214/26C08F216/14C08F8/32B01J39/20
Inventor 王丽张永明滕培峰王凯
Owner SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap