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Perfluorinated ion exchange resin and preparation method and application thereof

An exchange resin and perfluorinated ion technology, applied in cation exchange materials, structural parts, battery pack parts, etc., can solve the problems of poor thermal stability and the inability of perfluorinated ion exchange resin to meet the mechanical strength and ion exchange capacity at the same time. Achieve the effects of good thermal stability, good high temperature mechanical stability, and high ion exchange capacity

Active Publication Date: 2010-08-11
SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of perfluoro ion exchange resins in the prior art that cannot meet the requirements of mechanical strength and ion exchange capacity at the same time, and have poor thermal stability, and provide a kind of resin that can simultaneously meet the requirements of mechanical strength and ion exchange capacity and has a high thermal stability. Perfluorinated ion exchange resin with good stability and preparation method thereof

Method used

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

Examples

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Embodiment 1

[0032] This example is used to illustrate the preparation process and measurement results of the perfluorinated ion exchange resin provided by the present invention.

[0033] making process:

[0034] (a) Clean the reactor and add 5L deionized water and 200g sodium dodecylbenzenesulfonate, start the stirring device, vacuumize and fill with high-purity nitrogen for three times, after testing the oxygen content in the reactor is below 1ppm, Vacuumize, add 400g sulfonyl fluoride pendant vinyl ether monomer (I) (F 2 C=CF-O-CF 2 -CF 2 -SO 2 F) and 550g sulfonyl fluoride pendant vinyl ether monomer (II) (F 2 C=CF-O-CF 2 -CF 2 -CF 2 CF 2 -SO 2 F);

[0035] (b) Fill tetrafluoroethylene monomer (CF 2 = CF 2 ) to a pressure of 2.5MPa;

[0036] (c) The reaction kettle is heated to 50° C., and 3.2 g of perfluorobutyryl peroxide (CF 3 CF 2 CF 2 CO-OO-CCF 2 CF 2 CF 3 ) to initiate the polymerization reaction, continue to feed tetrafluoroethylene monomer to keep the reactio...

Embodiment 2

[0041] This example is used to illustrate the preparation process and measurement results of the perfluorinated ion exchange resin provided by the present invention.

[0042] making process:

[0043] (a) Wash the reactor and add 5L deionized water, 150g sodium dodecylbenzenesulfonate and 125g nonylphenol polyoxyethylene ether NP-10, start the stirring device, vacuumize and fill with high-purity nitrogen for three times, After the oxygen content in the test reactor is below 1ppm, vacuumize, and add 500g of sulfonyl fluoride pendant vinyl ether monomer (I) (F) to the reactor through the liquid feed valve. 2 C=CF-O-CF 2 -CF 2 -SO 2 F) and 400g sulfonyl fluoride pendant vinyl ether monomer (II) (F 2 C=CF-O-CF 2 -CF 2 -CF 2 CF 2 -SO 2 F);

[0044] (b) Fill tetrafluoroethylene monomer (CF 2 = CF 2 ) to a pressure of 5.5 MPa;

[0045] (c) The reactor is warmed up to 35°C, and 8g perfluoropropoxypropyl peroxide (CF) is added to the kettle by a metering pump. 3 CF 2 CF ...

Embodiment 3

[0050] This example is used to illustrate the preparation process and measurement results of the perfluorinated ion exchange resin provided by the present invention.

[0051] making process:

[0052] (a) Clean the reactor and add 5L of deionized water and 500ml of alkyl ether sulfate Texapon NSOIS with a solid content of 27%, start the stirring device, vacuumize and replace with high-purity nitrogen for three times, and test the oxygen content in the reactor After below 1ppm, vacuumize, add 300g sulfonyl fluoride pendant vinyl ether monomer (I) (F 2 C=CF-O-CF 2 -CF 2 -SO 2 F) and 610g sulfonyl fluoride pendant vinyl ether monomer (II) (F 2 C=CF-O-CF 2 -CF 2 -CF 2 CF 2 -SO 2 F);

[0053] (b) Fill tetrafluoroethylene monomer (CF 2 = CF 2 ) to a pressure of 3.2MPa;

[0054] (c) The reaction kettle is heated to 80° C., and 320 g of 10% by weight of ammonium persulfate aqueous solution is added to the kettle by a metering pump to initiate a polymerization reaction, and...

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Abstract

The invention provides a perfluorinated ion exchange resin and a preparation method and application thereof. The molecular formula of the perfluorinated ion exchange resin is shown as the formula M. The invention also provides a preparation method of the perfluorinated ion exchange resin; the method comprises: under the action of initiator, tetrafluoroethylene monomer and two sulfuryl fluoride vinyl ether monomers generate ternary copolymerization reaction. The perfluorinated ion exchange resin provided by the invention can simultaneously satisfy the requirements of mechanical strength and ion exchange volume and has favourable thermostability.

Description

technical field [0001] The invention belongs to the field of polymer materials, relates to a perfluorinated ion exchange resin and its preparation method and application, in particular to a ternary copolymerized perfluorinated ion exchange resin with two different structures of sulfonyl fluoride short side groups and its Preparation methods and applications. Background technique [0002] Since the 1970s, DuPont processed perfluorosulfonic acid resin into perfluorosulfonic acid ion exchange membrane and applied this membrane to the chlor-alkali industry and proton exchange membrane fuel cells. Countries around the world have been extensively studied. [0003] Fluorine-containing ion-exchange membranes containing ion-exchange groups, especially sulfonic acid groups and carboxylic acid groups, are more suitable for use as ion-exchange membranes for fuel cells and chlor-alkali electrolyzers due to their resistance to chemical degradation. US3282875 is the first document publis...

Claims

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Application Information

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IPC IPC(8): C08F214/26C08F216/14C08F2/24B01J39/20H01M8/02H01M2/16H01M8/10C25B13/08C25B1/46H01M8/1018H01M8/1069
CPCY02E60/12Y02E60/521Y02E60/50
Inventor 张永明秦胜高自宏张恒魏茂祥李勇王军
Owner SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
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