A kind of anion exchange membrane for fuel cell and preparation method thereof
An anion exchange membrane and fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve problems such as low conductivity, poor thermodynamic performance, and poor ion exchange capacity
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Embodiment 1
[0059] The preparation of embodiment 1 chloromethylated polysulfone
[0060] ①Put 10g of polysulfone into a three-necked flask filled with 500mL of chloroform, and stir mechanically for 2 hours to completely dissolve the polysulfone.
[0061] ② Add 6.7g paraformaldehyde, 0.26ml SnCl 4 And 28.5mL trimethylchlorosilane, reacted at 55°C for 3 days.
[0062] ③ Pour the reaction mixture in ② into absolute ethanol, suction filter the white precipitate, and put the white precipitate in an oven at 80°C for drying.
[0063] ④ Dissolve the white precipitate obtained in ③ in chloroform, precipitate in ethanol, filter with suction, and dry in an oven at 80°C. Repeat twice to obtain pure chloromethylated polysulfone.
Embodiment 23
[0064] Example 2 Preparation of 3wt.% quaternized polysulfone (QPSU)
[0065] The chloromethylated polysulfone prepared in Example 1 is dissolved in DMSO, and trimethylamine ethanol solution (or N-methylpiperidine or N-methylmorpholine oxide or N-methylpiperidine or N-methylpyrrole alkane or triethylamine or tripropylamine), reacted at 80°C for 8h, and after the reaction was completed, a 3wt.% quaternized polysulfone solution was obtained for use.
[0066] In this embodiment, chloromethylated polysulfone and trimethylamine ethanol solution (or N-methylpiperidine or N-methyl morpholine oxide or N-methylpiperidine or N-methylpyrrolidine or triethylamine or The amount of tripropylamine) is determined according to the product content 3wt.% quaternized polysulfone solution.
Embodiment 33
[0067] Example 3 Preparation of 3wt.% quaternized branched polyethyleneimine (QBPEI) solution
[0068] Dissolve 5 g of branched polyethyleneimine in 100 g of ethanol, add 10 g of bromopropane, condense and reflux at 80°C for 24 hours, place the product in a rotary evaporation at 60°C, and remove ethanol and unreacted bromopropane. The product was dried in a vacuum oven at 80° C. for 24 hours to obtain a quaternized branched polyethyleneimine solid.
[0069] Dissolve the quaternized branched polyethyleneimine in DMSO to obtain a 3 wt.% quaternized branched polyethyleneimine solution for use.
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