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Device and method for preparing composite perfluorinated ion exchange membrane for vanadium battery

Active Publication Date: 2013-05-08
THINKRE MEMBRANE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the raw material cost of the film prepared by this solution casting method is high, the amount of solvent used is large, the thickness cannot be controlled, the thickness of the film prepared is uneven, the production efficiency is low, and continuous production cannot be performed.

Method used

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  • Device and method for preparing composite perfluorinated ion exchange membrane for vanadium battery

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]Embodiment 1: Manufacture composite perfluorinated ion exchange membrane according to the following steps

[0032] (1) Put 10kg of perfluorosulfonic acid ion exchange resin, 20kg of ethanol, 5kg of ethylene glycol, and 5kg of n-propanol into the main material reactor 1, flush nitrogen into the air and close the inlet and outlet valves; start the stirring motor , set the rotation speed at 300 rpm, the temperature at 240°C, heat and stir for 4 hours, observe the gel state of the feed liquid from the viewport of the main material reactor 1, then close the agitator, wait for the feed liquid to cool to 90°C and press it into In the still 2; add 15kg of high boiling point solvent N,N-dimethylformamide into the still 2, start the stirrer of the still 2 to stir, set the temperature to 85°C, stir at a speed of 150 rpm, and stir for 40 minutes Finally, the solvent condensation recoverer 4 is opened to extract the low-boiling point solvent in the distillation still 2. After the ele...

Embodiment 2

[0038] Embodiment 2: manufacture composite perfluorinated ion exchange membrane according to the following steps

[0039] (1) Put 10kg of perfluorosulfonic acid ion exchange resin, 5kg of methanol, 25kg of ethanol, 5kg of ethylene glycol, and 5kg of isopropanol into the main material reactor 1, flush nitrogen into the air, and then close the inlet and outlet valves; Start the stirring motor, set the rotating speed to 300 rpm, and the temperature to 200°C, keep the heat and stir for 10 hours, observe the gel state of the feed liquid from the view port of the main material reactor 1, then close the agitator, and wait for the feed liquid to cool to 90 ℃ into the distillation still 2; 15kg of high boiling point solvent N,N-dimethylformamide was added into the still 2, and the stirrer of the still 2 was started to stir, the temperature was set at 90°C, and the stirring speed was 150 rpm. After stirring for 30 minutes, open the solvent condensation recoverer 4, extract the low-boili...

Embodiment 3

[0045] Embodiment 3: Manufacture composite perfluorinated ion exchange membrane according to the following steps

[0046] (1) Put 10kg of perfluorosulfonic acid ion exchange resin, 5kg of methanol, 40kg of ethanol, 10kg of ethylene glycol, 15kg of n-propanol, 10kg of isopropanol, and 10kg of water into the main material reactor 1, and flush with nitrogen After exhausting the air, close the air inlet and outlet valves; start the stirring motor, set the rotation speed at 300 rpm, the temperature at 280°C, keep stirring for 8 hours, observe the gel state of the material liquid from the main material reactor 1, and then close the stirring After the feed liquid is cooled to 90°C, press it into the distillation still 2; add 10kg of high boiling point solvent N,N-dimethylformamide and 10kg of N,N-dimethylacetamide into the still 2, start the still Stir with the agitator 2, set the temperature to 90°C, and stir at a speed of 150 rpm. After stirring for 30 minutes, open the solvent con...

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Abstract

The invention discloses a device and a method for preparing a composite perfluorinated ion exchange membrane for a vanadium battery. The method comprises the steps as follows: mixing perfluorinated sulfonic acid ion exchange resin slurry with vanadium-resistant auxiliary materials dissolved in a solvent, and casting by a steel belt casting machine to obtain the composite perfluorinated ion exchange membrane. The composite perfluorinated ion exchange membrane prepared with the device and the method is especially suitable for the vanadium battery, and is high in electric conductivity, excellent in vanadium resistance and uniform in thickness; and membrane preparation equipment is easy to manufacture.

Description

technical field [0001] The invention relates to a manufacturing device and method of an ion exchange membrane, in particular to a manufacturing device and method of a composite perfluorinated ion exchange membrane for a vanadium battery. Background technique [0002] Perfluorinated ion exchange membranes have a wide range of applications, such as chlor-alkali industry, fuel cells, electrolysis industry and so on. At present, the vast majority of the world uses DuPont's Nafion membrane series, and its film formation process is the extrusion method, which has been monopolized by DuPont in the world's perfluorinated ion membrane field for several years. DuPont's extrusion method is to extrude perfluorosulfonic acid resin into a film through a screw hot-melt extruder. The film extrusion method is prone to defects such as fish eyes, pinholes and low strength, and is prone to anisotropy of the film due to unidirectional extrusion; the film extrusion method has very high r...

Claims

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Application Information

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IPC IPC(8): C08J5/22C08L27/12C08L27/16C08K5/5415C08K3/36H01M8/02H01M8/18
CPCY02E60/528Y02E60/50Y02P20/10
Inventor 杨大伟杨丰仁祝向伟
Owner THINKRE MEMBRANE MATERIAL
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