Method of preparing diazanaphthalene biphenyl type sulphonation polyarylethernitrile electrolyte film material

A phthalazine-type, electrolyte membrane material technology, applied in solid electrolyte fuel cells, secondary batteries, secondary battery components, etc., can solve the problem of high membrane swelling rate, poor high temperature oxidation resistance, and loss of mechanical strength and other problems, to achieve the effect of high proton conductivity, good chemical stability and high strength

Inactive Publication Date: 2007-08-15
DALIAN UNIV OF TECH
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Problems solved by technology

However, when the modified resin membrane has a reasonable proton exchange capacity, the swelling rate of the membrane is high, resulting in a decrease in the dimensional stability and strength of the membrane, which in turn affects the direct application of the proton exchange membrane.
Such as Macrom.Chem.Phy., 199 (7), P1421 (1998) reported by bisphenol A, sulfonated 4,4'-difluorobenzophenone and 4,4'-difluorobenzophenone copolymerization Sulfonated polyaryletherketone, the isopropylene structure in the polymer makes it poor in high temperature oxidation resistance, and the membrane with high sulfonation degree swells, resulting in loss of mechanical strength and limiting its application in practical fuel cells

Method used

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  • Method of preparing diazanaphthalene biphenyl type sulphonation polyarylethernitrile electrolyte film material
  • Method of preparing diazanaphthalene biphenyl type sulphonation polyarylethernitrile electrolyte film material
  • Method of preparing diazanaphthalene biphenyl type sulphonation polyarylethernitrile electrolyte film material

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Embodiment 1

[0041] With 4.7650g (20mmol) compound 2, wherein R 1 , R 2 , R 3 , R 4 is H atom, 3.3782g (8mmol) of compound 4, wherein Y is -CO-, L is F atom, and 0.6880g (4mmol) of dichlorobenzonitrile is added to the condensing reflux device connected to the water separator and the nitrogen tube of 100mL In the three-necked flask, under electromagnetic stirring, add 4.19g of potassium carbonate, 16mL of NMP as a solvent, and 8mL of toluene as a water-carrying agent. First react at 120°C, continuously distill out toluene and water. Then the temperature was raised to 170°C for 3h. Then add 1.7456g (8mmol) of compound 3, wherein X is -CO-, L is F atom, bring water at 140°C, and then raise the temperature to 180°C for about 8-12 hours to reach the predetermined viscosity. Cool, dilute with a small amount of NMP, and pour the polymer slowly into 1:1 volume ratio methanol-water. The fibrous polymer was collected by filtration. Vacuum dry for 48 hours. Polymer intrinsic viscosity 2.0dLg ...

Embodiment 2

[0043] In a 500mL three-necked flask equipped with a stirrer, nitrogen tube, water separator and condenser tube, add 11.9125g (50mmol) of compound 2, wherein R 1 , R 2 , R 3 , R 4 H atom, 15.1306g (20mmol) compound 4, wherein Y is 4,4'-dibenzoylbenzene, L is fluorine atom, 0.2602g (10mmol) dichlorobenzonitrile, 10.36g (75mmol) potassium carbonate, 30mL NMP, 50ml toluene, heated to reflux with water for 2h. Raise the temperature to 180°C for prepolymerization for 3 hours. Add 6.9266g (20mmol) of compound 3, wherein X is 4,4'-dibenzoylbenzene, L is a fluorine atom, and 10mL of toluene is refluxed with water. After the completion of bringing water, the temperature was raised to 180°C for 20 hours of polymerization. Cool, dilute with a small amount of NMP, and pour the polymer slowly into 1:1 volume ratio methanol-water. The polymer was collected by filtration and vacuum-dried for 24 hours to obtain the target product with an intrinsic viscosity of 1.17dLg -1 (NMP, 25°C).

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Abstract

The invention discloses a preparing method of two aza naphthalene biphenyl type sulfonated polyarylether nitrile ion conductive film material, which comprises the following steps: incorporating structural element of formula 1; passing two aza naphthalene ketone biphenyl bis-phenol, dihalogen (or two nitro group) cyanobenzene, 3, 3'-two petroleum sulfonate-4, 4'- aromatic dihalogen (or two nitro group) and aromatic dihalogen (or two nitro group) as monomer; choosing alkali or salt of alkali metal or alkali earth metal; getting the product in non-proton polar solvent through high-heat copolymerization reaction; wherein R1, R2, R3, R4 maybe alkyl group, alkoxy, phenyl group, halogen atom or hydrogen atom. This invention possesses good tenacity, dig intensity, low swelling ratio, which can be used to fuel battery or energy-storage battery or film separating technology domain.

Description

technical field [0001] The invention belongs to the technical field of polymer materials. It relates to the preparation method of a series of phthalazine-type sulfonated polyarylether nitrile solid electrolyte membrane materials whose sulfonation degree can be precisely controlled, especially related to the technology applicable to fuel cells (PEMFC) or energy storage batteries or other related applications field of solid electrolyte separator materials. Background technique [0002] Due to the global energy crisis and the deteriorating environment, it is urgent to develop efficient, clean and renewable energy technologies. Proton exchange membrane fuel cell (PEMFC) is the fifth-generation fuel cell developed in the 1980s. It uses hydrogen as the main fuel. It has the advantages of rapid start-up at room temperature, cleanliness, and high energy conversion efficiency, and has attracted widespread attention from researchers. Therefore, PEMFC is the most promising ideal powe...

Claims

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Application Information

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IPC IPC(8): C08G65/40H01M8/02H01M8/10H01M10/02H01M10/00H01M8/0202H01M8/1018H01M8/1069
CPCY02E60/521Y02E60/10Y02E60/50
Inventor 朱秀玲梁勇芳王国庆张耀霞蹇锡高
Owner DALIAN UNIV OF TECH
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