A kind of preparation method of cation exchange membrane with multiple cross-linked structure
A cation exchange membrane, multiple cross-linking technology, applied in cation exchange, ion exchange, chemical instruments and methods, etc., can solve problems affecting membrane mechanical properties and electrochemical properties, etc.
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Embodiment 1
[0033] (1) Bisphenol A polysulfone sulfonylation:
[0034] Add 60.0g bisphenol A polysulfone to a dry four-necked flask, then add 500.0ml dichloroethane, stir to completely dissolve bisphenol A polysulfone; put 3.6818g sulfuryl chloride and 10ml dichloroethane into the dropping funnel At room temperature, the liquid in the dropping funnel was slowly added dropwise to the dichloroethane solution of bisphenol A polysulfone, and the dropping time was 10 minutes. Scrape the modified bisphenol A polysulfone solution on a flat plate and dry it at 60°C to remove the solvent to obtain a modified bisphenol A polysulfone solid.
[0035] (2) Monomer solution preparation:
[0036] Add 7.8245g of N-methylpyrrolidone, 3.1854g of divinylbenzene, 0.1429g of 4-vinylpyridine and 9.8555g of ethyl methacrylate sulfonate into the beaker, then add 0.0552g of azobisisobutyronitrile and stir until completely dissolved to obtain a monomer solution.
[0037] (3) Membrane solution preparation:
[00...
Embodiment 2
[0049] (1) Bisphenol A polysulfone sulfonylation:
[0050] Add 60.0g bisphenol A polysulfone to a dry four-necked flask, then add 500.0ml dichloroethane, stir to completely dissolve bisphenol A polysulfone; put 3.6818g sulfuryl chloride and 10.0ml dichloroethylene into the dropping funnel At room temperature, the liquid in the dropping funnel was slowly added dropwise to the dichloroethane solution of bisphenol A polysulfone, and the dropwise addition time was 10 minutes. After the dropwise addition was completed, the reaction was continued at room temperature for 4 h; after the reaction was completed, Modified bisphenol A polysulfone solution: scrape the modified bisphenol A polysulfone solution on a flat plate and dry it at 60°C to remove the solvent to obtain a modified bisphenol A polysulfone solid.
[0051] (2) Monomer solution preparation:
[0052] Add 6.5205g N-methylpyrrolidone, 3.1854g divinylbenzene, 0.2144g 4-vinylpyridine and 9.8555g ethyl methacrylate sulfonate i...
Embodiment 3
[0061] (1) Bisphenol A polysulfone sulfonylation:
[0062] Add 60.0g bisphenol A polysulfone to a dry four-necked flask, then add 500.0ml dichloroethane, stir to completely dissolve bisphenol A polysulfone; put 2.7614g sulfuryl chloride and 10.0ml dichloroethylene into the dropping funnel At room temperature, the liquid in the dropping funnel was slowly added dropwise to the dichloroethane solution of bisphenol A polysulfone, and the dropwise addition time was 10 minutes. After the dropwise addition was completed, the reaction was continued at room temperature for 4 h; after the reaction was completed, Modified bisphenol A polysulfone solution, drying the modified bisphenol A polysulfone solution at 60° C. to remove the solvent to obtain a modified bisphenol A polysulfone solid.
[0063] (2) Monomer solution preparation:
[0064] Add 6.4118g of N-methylpyrrolidone, 2.1467g of divinylbenzene, 0.1445g of 4-vinylpyridine and 8.5395g of ethyl methacrylate sulfonate into the beake...
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