Weak alkaline macromolecule resin and use thereof in direct alcohols fuel battery
A technology of polymer resin and weak alkalinity, which is applied in secondary battery parts, etc., can solve problems such as difficulty in removing carbon dioxide, and achieve the effects of improving life, reducing methanol penetration, and broadening market prospects
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Embodiment 1
[0043] The chloromethylation reaction of embodiment 1 polystyrene (known method)
[0044] In a 250ml three-necked flask equipped with a stirrer, a condenser, and a thermometer, add 10-20g polystyrene and 100-190ml dichloroethane (solvent), stir at room temperature to fully dissolve. Then the temperature was raised to 60°C to 70°C, and the previously prepared zinc chloride (catalyst) monochloromethyl ether complex (1.5g of zinc chloride completely dissolved in 20g of chloromethyl ether) was added to the bottle, and the reaction was stirred for 3~ After 5 hours, let it slowly cool down to room temperature, add the reactants in the bottle to a large amount of boiling water under vigorous stirring, the chloromethylated polymer precipitates, filter, wash with water several times, and store in an oven at 60°C Dry to obtain the chloromethylated product. The reaction formula is as shown in Example 2. The characterization of the product after chloromethylation was carried out using ...
Embodiment 2
[0048] Embodiment 2: film-forming and quaternization, weak alkalinization reaction of chloromethylated polystyrene
[0049] The chloromethylated polystyrene is dissolved in N,N-dimethylformamide to prepare a film-making solution of 2wt%-40wt%. Take the film-making solution and cast it on a clean glass plate to form a film, dry at 60°C for 6-12 hours, then heat-treat at 100°C for 4-8 hours, cool to room temperature naturally, immerse in deionized water, and peel off.
[0050] The chloromethylation / ammonization / weak alkalinization reaction of polystyrene is as follows:
[0051]
[0052] Put the above membrane in an aqueous solution of trimethylamine (10wt%-30wt%), aminate it at room temperature for 2-4 days, take it out and rinse it with water to obtain a chlorine-type quaternized polystyrene membrane, and then in 10%-40 %Na 2 CO 3 Soak in the aqueous solution for 1 to 3 days to completely hydrolyze to obtain a carbonate-type quaternized polystyrene weakly basic ion exchange...
Embodiment 3
[0058] Embodiment 3: the chloromethylation reaction of polyphenylene ether
[0059] Adopt the method for embodiment 1, reaction solvent takes chloroform or ethylene dichloride, the reaction equation of the chloromethylation / ammonization / weak alkalinization reaction of polyphenylene ether is as follows:
[0060]
[0061] In the formula: replacing O with S is polyphenylene sulfide, and other structures are the same as above
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