Fluor resin with sulfuryl fluoride and aether terminal group lateral group, synthesizing method and application thereof

A technology of sulfonyl fluoride, ether, and sulfonyl fluoride end group alkenyl ether, which is applied in the field of ternary copolymerization perfluorosulfonic acid resin and its synthesis, and can solve the problems of heat resistance and chemical corrosion resistance reduction, etc.

Inactive Publication Date: 2008-07-16
SHANDONG HUAXIA SHENZHOU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the exchange capacity and increase the mechanical strength of the ionic membrane, diene is introduced for crosslinking, but the introduction of the crosslinking agent introduces hydrogen-containing alkanes into the membrane, which reduces the heat resistance and chemical corrosion resistance.

Method used

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  • Fluor resin with sulfuryl fluoride and aether terminal group lateral group, synthesizing method and application thereof
  • Fluor resin with sulfuryl fluoride and aether terminal group lateral group, synthesizing method and application thereof
  • Fluor resin with sulfuryl fluoride and aether terminal group lateral group, synthesizing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Embodiment 1: (solution polymerization, fluorocarbon solvent, perfluoroalkyl acyl peroxide)

[0088] After cleaning and drying the reactor, it was vacuum-filled three times with nitrogen, vacuum-filled tetrafluoroethylene monomer to 0.08MPa, and then vacuum-filled to 0.0001MPa, and then 300g perfluoromethylcyclobutane, 100g perfluorosulfonyl mono Body (CF 2 =CFO-CF 2 CFCF 3 O-CF 2 CF 2 SO 2 F), 5g 6-methoxy-propyl vinyl ether (CF 2 =CFO-CF 2 CF 2 CF 2 -OCH 3 ) was added to the reaction kettle, the temperature was raised to 45°C, and 20ml containing 0.02g perfluorobutyryl compound (CF 3 CF 2 CF 2 CO-OO-CCF 2 CF 2 CF 3 ), into tetrafluoroethylene (CF 2 = CF 2 ) until the pressure reaches 1MPa, and maintain the pressure at 0.8-1.0MPa to continue the reaction. When the amount of tetrafluoroethylene added reaches 110g, stop adding and allow the reaction to continue. When the pressure in the still was reduced to 0.2MPa, the reaction was stopped and the unrea...

Embodiment 2

[0096] Embodiment 2: (solution polymerization, azo initiator)

[0097] After cleaning and drying the reactor, vacuumize and fill nitrogen three times, then vacuumize and fill tetrafluoroethylene monomer to 0.08MPa, and then vacuumize to 0.0001MPa, then add 300g perfluoromethylcyclobutane, 100g perfluorosulfonyl Monomer (CF 2 =CFO-CF 2 CFCF 3 O-CF 2 CF 2 SO 2 F), 5g 6-methoxy-propyl vinyl ether (CF 2 =CFO-CF 2 CF 2 CF 2 -OCH 3 ), 0.2g of azobisisobutyronitrile were added to the reaction kettle, the temperature was raised to 60°C, and 20ml of perfluorobutyryl compound containing peroxide was added with a metering pump, and tetrafluoroethylene (CF 2 = CF 2 ) until the pressure reaches 1MPa, and maintain the pressure at 0.8-1.0MPa to continue the reaction. When the amount of tetrafluoroethylene added reaches 110g, stop adding and allow the reaction to continue. When the pressure in the still was reduced to 0.2MPa, the reaction was stopped and the unreacted tetrafluoroe...

Embodiment 3

[0098] Embodiment 3: (dispersion polymerization, in water, persulfate is made initiator)

[0099] After the reactor was cleaned, add 3g of perfluoroalkoxyammonium carboxylate (CF 3 CF 3 CF 2 OCFCF 3 CF 2 -OCFCF 3 COONH 4 ), 500g of pure water, evacuated and filled with nitrogen three times, then evacuated and filled with tetrafluoroethylene monomer to 0.08MPa, and then evacuated to 0.0001MPa, 100g of perfluorosulfonyl monomer (CF 2 =CFO-CF 2 CFCF 3 O-CF 2 CF 2 SO 2 F), 8g 6-methoxy-propyl vinyl ether (CF 2 =CFO-CF 2 CF 2 CF 2 -OCH 3 ) into the reaction kettle, the temperature was raised to 80°C, and 20ml of aqueous solution containing 0.05g of potassium persulfate was added with a metering pump, and tetrafluoroethylene (CF 2 = CF 2 )80g, the reaction begins. When the pressure in the kettle was reduced to 0.1MPa, the reaction was stopped, and the unreacted tetrafluoroethylene monomer was recovered. Release the material, and unreacted monomers will precipitate...

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Abstract

The invention pertains to the field of fluoro-containing macromolecular materials, which provides a per-fluorocarbon resin with sulfonic acid fluoride and lateral group of aether end group and the per-fluorocarbon resin is the per-fluorocarbon resin obtained by ternary copolymerization of alkyl ether end group vinyl ether monomer (A), tetrafluoroethylene (B) and vikane ether end group monomer (C). The mol content percentage of the three monomers occupying in the polymer is that: A is equal to 0.01-5 percent; B is equal to 48-84.9 percent; C is equal to 15-47 percent; a per-fluorocarbon ion exchange membrane prepared not only has various chemical mediator resistance, but also has high electrical conductivity, high mechanical strength and low membrane resistance and is suitable for being used in fuel batteries or chlor-alkali electrolytic bath. The invention further provides a preparation method and application of the resin.

Description

technical field [0001] The invention belongs to the field of fluorine-containing polymer materials, and relates to a perfluorosulfonic acid resin and a synthesis method thereof, in particular to a ternary copolymerized perfluorosulfonic acid resin with sulfonyl fluoride and ether terminal branched chains and a synthesis method thereof. Background technique [0002] Since DuPont processed perfluorosulfonic acid resins into perfluorosulfonic acid ion exchange membranes in the 1970s and this membrane was used in the chlor-alkali industry and proton exchange membrane fuel cells, perfluorosulfonic acid ion exchange membranes have been widely used in countries all over the world. has been extensively studied. [0003] The use of fluorine-containing or non-fluorine ion exchange membranes in electrolysis cells and fuel cells is well known. Such ionic membranes have bonded anions and bonded cations for cation exchange; or bonded cations and bonded anions for anion exchange; or both ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F214/26C08F216/00C08F4/04C08F4/32C08F2/06C08F2/22C08F2/02C08J5/20H01M8/02H01M2/16H01M8/0221H01M8/1018
CPCY02E60/50Y02P70/50
Inventor 张永明张恒高自宏高洪光
Owner SHANDONG HUAXIA SHENZHOU NEW MATERIAL
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