Alkaline polymer electrolyte membrane and preparation method thereof

An electrolyte membrane, polymer technology, applied in circuits, fuel cells, electrical components, etc., can solve problems such as poor water swelling resistance and decreased mechanical properties of wet membranes

Inactive Publication Date: 2011-04-20
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that the water swelling resistance of the film will be found to be poor when the film is immersed in water after quaternization, and the mechanical properties of the wet film will be significantly reduced.

Method used

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  • Alkaline polymer electrolyte membrane and preparation method thereof
  • Alkaline polymer electrolyte membrane and preparation method thereof
  • Alkaline polymer electrolyte membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] A preparation method for an alkaline polymer electrolyte membrane, comprising the following steps:

[0087] a. Polymer synthesis: In a container equipped with a reflux condenser, add styrene, p-chloromethylstyrene, methyl methacrylate and butyl acrylate, wherein styrene accounts for the moles of the total amount of the four monomers The content is 10%, p-chloromethyl styrene accounts for 10% of the total amount of the four monomers, the molar content of methyl methacrylate accounts for the total amount of the four monomers is 40%, and butyl acrylate accounts for the four The molar content of the total amount of monomer is 40%, and it is poured into toluene equal to the volume of the total monomer, and the 2 gas while stirring, while passing N 2 After gas ten minutes, add azobisisobutyronitrile, its add-on accounts for the mole fraction of total monomer and is 1%, reacts in N 2 Heat in an oil bath at 50°C for 34 hours in an air atmosphere. After the reaction is complet...

Embodiment 2

[0112] A preparation method for an alkaline polymer electrolyte membrane, comprising the following steps:

[0113] a. Polymer synthesis: In a container equipped with a reflux condenser, add styrene, p-chloromethylstyrene, ethyl ethacrylate and methyl acrylate, wherein styrene accounts for the moles of the total amount of the four monomers The content is 20%, p-chloromethyl styrene accounts for 20% of the total amount of the four monomers, ethyl ethacrylate accounts for 30% of the total amount of the four monomers, and methyl acrylate accounts for the four The molar content of the total amount of monomers is 30%, and it is poured into tetrahydrofuran equal to the volume of the total monomers, and the 2 gas while stirring, while passing N 2 After gas ten minutes, add azobisisoheptanonitrile, its add-on accounts for the mole fraction of total monomer and is 1.5%, reacts in N 2 Heat in an oil bath at 60°C for 35 hours in an air atmosphere. After the reaction is completed, the so...

Embodiment 3

[0138] A preparation method for an alkaline polymer electrolyte membrane, comprising the following steps:

[0139] a. Polymer synthesis: In a container equipped with a reflux condenser, add styrene, p-chloromethylstyrene, propyl acrylate and ethyl acrylate, wherein styrene accounts for the moles of the total amount of the four monomers The content is 25%, p-chloromethyl styrene accounts for 25% of the total amount of the four monomers, the molar content of propyl acrylate accounts for 25% of the total amount of the four monomers, and ethyl acrylate accounts for the four The molar content of the total amount of monomers is 25%, and it is poured into chloroform equal to the volume of the total monomers and passed through N 2 gas while stirring, while passing N 2 After gas ten minutes, add dibenzoyl peroxide, its add-on accounts for the molfraction of total monomer and is 2%, reacts in N 2 Heated in an oil bath at 70°C for 36 hours in an air atmosphere. After the reaction was c...

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Abstract

The invention relates to an alkaline polymer electrolyte membrane and a preparation method thereof, in particular to a method for preparing an alkaline polymer electrolyte membrane by preparing a quaternary random copolymer from styrene, 4-chloromethyl styrene, an alkyl acrylate monomer and an acrylic ester monomer as raw materials, and carrying out quaternization or quaternary phosphonium reaction and membrane forming. In the invention, the 4-chloromethyl styrene is directly adopted and chloromethyl ether is not used, thereby solving the problems of the additional crosslinking of methylenem, the pollution of a metal catalyst and the like. The prepared alkaline polymer electrolyte membrane has stable structural performance and good electrochemical stability, and the conductivity of the alkaline polymer electrolyte membrane reaches 10-3S/cm.

Description

technical field [0001] The present invention relates to an alkaline polymer electrolyte membrane and a preparation method thereof, in particular to a four-phase membrane prepared from styrene, p-chloromethylstyrene, alkyl acrylate monomers and acrylate monomers. A random copolymer, a quaternary ammonium or quaternary phosphonium reaction, and a method for further preparing an alkaline polymer electrolyte membrane after film formation. Background technique [0002] Traditional cross-linked polystyrene resins are widely used as starting materials for various adsorbents and ion exchanges due to their efficient separation process. The traditional preparation method of polystyrene ion exchange resin generally includes the synthesis of copolymerized pellets and the introduction of functional groups. Styrene and divinylbenzene are suspended and copolymerized, and a dispersion stabilizer is added to obtain a spherical copolymer (PS) with a suitable particle size and uniform size un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08L33/08C08L25/14C08L25/18C08L33/10C08F220/18C08F220/14C08F212/08C08F212/14C08F8/32C08F8/40C08J7/12C08J5/22H01M8/02H01M2/16H01M8/102H01M8/1069H01M8/1072
CPCY02E60/12Y02E60/50
Inventor 王晓辉王彪王华平彭锟
Owner DONGHUA UNIV
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