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Manufacturing method for polyphenyl sulfone hollow-fiber membrane for use in humidification film

A manufacturing method and technology of polyphenylsulfone, which are applied in the manufacture of final products, chemical characteristics of fibers, chemical instruments and methods, etc., can solve the problems of no record found, no attention to supply humidity and humidification amount, etc. Suppression of segregation and/or cross-linking, high water permeability

Active Publication Date: 2020-06-12
NOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In these patent documents, there is no focus on the relationship between the supply humidity and the amount of humidification, and no description is found in the specification.

Method used

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  • Manufacturing method for polyphenyl sulfone hollow-fiber membrane for use in humidification film
  • Manufacturing method for polyphenyl sulfone hollow-fiber membrane for use in humidification film
  • Manufacturing method for polyphenyl sulfone hollow-fiber membrane for use in humidification film

Examples

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Embodiment

[0030] Next, the present invention will be described using examples.

[0031] Example

[0032] (1) Using water as the core liquid, 20 parts by weight of polyphenylsulfone (RADEL R-5000 produced by Solvay Specialty Polymers), hydrophilic polyvinylpyrrolidone (K-30G produced by ISP Co.) 15 parts by weight and 65 parts by weight of dimethylacetamide uniform spinning stock solution at room temperature, sprayed from the double ring nozzle into the water coagulation bath, thereafter washed in pressurized water at 121 ° C for 1 hour, and then in Heating in a constant temperature bath at 170° C. for 8 hours and performing cross-linking treatment gave a porous polyphenylsulfone hollow fiber membrane with an outer diameter of 1.0 mm, an inner diameter of 0.7 mm, and a pore diameter of 2.2 nm. Here, the pore size means the average Knudsen diffusion diameter based on the number of samples measured using a nano-perm-porometer manufactured by Seika Digital Image Corporation.

[0033] The ...

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Abstract

A hollow-fiber membrane produced by this manufacturing method has high water permeability, and, when used as a humidification film, provides a linear relation between supplied humidity and humidification level, and thus can effectively serve such uses as a humidification film for a fuel cell. This polyphenyl sulfone hollow-fiber membrane manufacturing method is not only capable of providing a humidification film in which segregation and crosslinking of hydrophilic macromolecules associated with the operation of the humidification film is suppressed, and in which deterioration in humidificationperformance due to the operation thereof is suppressed, but also capable of producing a polyphenyl sulfone hollow-fiber membrane which is for use in a humidification film, which exhibits high water permeability, and which, when used as a crosslinked humidification film, provides a linear relation between supply humidity and humidification level.

Description

technical field [0001] The present invention relates to a method for producing a polyphenylsulfone hollow fiber membrane (polyphenylsulfone hollow fiber membrane) for a humidification membrane. More specifically, it relates to a method for producing a polyphenylsulfone hollow fiber membrane for humidification membranes that is effectively used in fuel cells and the like. Background technique [0002] In a solid polymer fuel cell, a device for humidifying and supplying a fuel gas such as hydrogen and an oxidant gas such as oxygen is essential. As a device for humidifying such a gas, a device using a water vapor permeable membrane is used, and in particular, a hollow fiber membrane system is often used. This method not only requires no maintenance, but also has many advantages such as no power supply required for driving. It becomes a system in which, for example, the gas passing through the hollow portion of the hollow fiber membrane is carried out by flowing the gas contai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/68B01D69/08B01D71/44D01F6/76H01M8/04291H01M8/10
CPCH01M8/04291H01M8/10B01D69/08B01D71/68D01F6/76B01D69/02B01D2323/30B01D2325/22B01D2311/103Y02E60/50Y02P70/50B01D71/441B01D2315/22B01D69/087D01F6/765
Inventor 渡边健祐佐藤孝利
Owner NOK CORP
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