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Preparation method of sulfonated poly (arylene sulfide sulfone) / polyimide block type proton exchange membrane material

A technology of sulfonated polyarylene sulfide and polyimide block, which is applied in the field of fuel cells, can solve the problems of affecting the service efficiency and life of the battery, easy swelling or even dissolution, and poor dimensional stability, so as to overcome the extremely easy swelling or Effects of dissolution, reduction of water absorption, and improvement of thermal stability

Active Publication Date: 2017-10-20
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sulfonated polyarylene sulfide sulfone (SPTES) has the advantages of high proton conductivity, thermal stability and good mechanical properties, but the SPTES membrane with high proton exchange capacity (IEC) is easy to swell or even dissolve under high humidity or water. Dimensional stability is poor, which affects the efficiency and life of the battery in the use of fuel cells

Method used

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  • Preparation method of sulfonated poly (arylene sulfide sulfone) / polyimide block type proton exchange membrane material
  • Preparation method of sulfonated poly (arylene sulfide sulfone) / polyimide block type proton exchange membrane material
  • Preparation method of sulfonated poly (arylene sulfide sulfone) / polyimide block type proton exchange membrane material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Synthesis and preparation of block-type sulfonated polyarylene sulfide sulfone-polyimide (SPTES15-b-PI7)

[0041] (1) Preparation of SPTES15-NH end-capped by an amino-blocking agent with a degree of polymerization of 30 2 The reaction process is as follows, 4.58g (10mmol) SDFDPS, 2.439g (9.756mmol) TBBT, and 100g sulfolane solvent are added to a dry there-necked flask, and 3.312g (24mmol) anhydrous potassium carbonate is added as a catalyst, magnetically stirred, Under the protection of nitrogen, stir at room temperature for 30min; then raise the temperature to 100°C, react for 1h; then raise the temperature to 160°C, and react at constant temperature for 6h; cool to room temperature, pour 480ml of methanol: acetic acid (v:v=10:1) mixture to precipitate , suction filtration, to obtain white massive polymer; wash three times with methanol aqueous solution (v methanol:v deionized water=3:1), use methanol as solvent, Soxhlet extraction 48h (Soxhlet extraction is a known te...

Embodiment 2

[0056] Synthesis and preparation of block-type sulfonated polyarylene sulfide sulfone-polyimide (SPTES15-b-PI15)

[0057] (1) Preparation of SPTES15-NH end-capped by an amino-blocking agent with a degree of polymerization of 30 2 , the preparation process is as described in Example 1.

[0058] (2) The process of preparing the anhydride-terminated PI15 hydrophobic segment with a degree of polymerization of 30 is as follows, weigh 2.6818g (10mmol) 1,4,5,8-naphthalene tetracarboxylic dianhydride, 4.0853g (9.446mmol) '-bis(3-aminophenoxy)-diphenylsulfone, and 62g of m-cresol solvent, were added to a 250ml three-necked flask, 1.2212g (10mmol) of benzoic acid was added, and 18ml of anhydrous toluene was used as a water-carrying agent. Water separator, condenser, magnetic stirring, under the protection of nitrogen, heat up to 80°C, react for 4h; heat up to 180°C, reflux for 12h; add 1.2916g (10mmol) isoquinoline, continue to react at 180°C for 12h; the reaction is completed, After ...

Embodiment 3

[0064] Synthesis and preparation of block-type sulfonated polyarylene sulfide sulfone-polyimide (SPTES15-b-PI23)

[0065] (1) Preparation of SPTES15-NH end-capped by an amino-blocking agent with a degree of polymerization of 30 2 , the preparation process is as described in Example 1.

[0066] (2) The process of preparing the anhydride-terminated PI23 hydrophobic segment with a degree of polymerization of 46 is as follows, weighing 2.6818g (10mmol) 1,4,5,8-naphthalene tetracarboxylic dianhydride, 4.2201g (9.7577mmol) 4,4 '-bis(3-aminophenoxy)-diphenyl sulfone, and 62g of m-cresol solvent were added to a 250ml three-necked flask, 1.2212g (10mmol) of benzoic acid was added, and 18ml of anhydrous toluene was used as a water-carrying agent. Water container, condenser, magnetic stirring, under nitrogen protection, heat up to 80°C, react for 4h; heat up to 180°C, reflux for 12h; add 1.2916g (10mmol) isoquinoline, continue to react at 180°C for 12h; After reaching room temperature,...

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Abstract

The present invention discloses a preparation method of a sulfonated poly (arylene sulfide sulfone) / polyimide block type proton exchange membrane material. The method adopts a two-step method for termination, a meta-or para-amino functional group is introduced into the terminal end of a sulfonated poly (arylene sulfide sulfone) chain section by end-capping reaction of the polymer chain section, and a block copolymer is synthesized by imidization coupling reaction of the amino-terminated sulfonated poly (arylene sulfide sulfone) hydrophilic section and an anhydride terminated polyimide hydrophobic section. The method not only overcomes the problem that a sulfonated poly(arylenethioethersulfone) film is very easy to swell and dissolve in high humidity or water, also guarantees that PEM has high thermal stability and proton conductivity especially proton conductivity under high temperature and humidity.

Description

technical field [0001] The invention belongs to a functional polymer material and a preparation method, in particular to a synthesis method of a sulfonated polyarylene sulfide sulfone-polyimide block polymer proton exchange membrane, and the proton exchange membrane material of the invention can be applied to a fuel cell field. Background technique [0002] Fuel cells (Fuel cells) is a power generation device that directly and continuously converts the chemical energy in fuels and oxidants into electrical energy. It is environmentally friendly and has high energy conversion efficiency. Therefore, fuel cells have become the focus of energy research today. Proton exchange membrane fuel cells (Proton exchange membrane fuel cells, PEMFCs), as a kind of fuel cell, use solid polymer as electrolyte to separate fuel and oxidant. The best candidates for electric vehicles, submarines, and various mobile power sources, and the proton exchange membrane (Protonexchange membrane, PEM) is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/00C08G75/23C08G73/10C08J5/22C08L87/00
CPCC08G73/1007C08G73/1071C08G75/23C08G81/00C08J5/2256C08J2387/00
Inventor 丁会利刘闪闪侯敬贺肖振雨
Owner HEBEI UNIV OF TECH
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