Ionomer and ion exchange membrane material containing same
A technology of polymers and derivatives, applied in fuel cells, fuel cell parts, solid electrolyte fuel cells, etc., can solve the problems of ion exchange membranes such as insufficient flexibility, difficulty in dissolving, and processing into membranes
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Embodiment 1
[0048] (1) Polymerization reaction
[0049] Add 23.2g of perfluoroalkyl ether containing melamine structure and 185g of distilled water as dispersant and solvent in a 1L high-pressure stainless steel reaction kettle equipped with stirring, heating, and nitrogen feeding devices, α, β, β-trifluorostyrene 18.5 g and 0.2g of dibenzoyl peroxide, replace the air in the reactor with high-purity nitrogen, pass through 95g of tetrafluoroethylene and 6g of hexafluoropropylene, heat up to 80°C and stir for 6h, cool down after the reaction, and release the gas to make The pressure inside the kettle becomes normal pressure, the product is released from the discharge pipe, precipitated in a large amount of water, filtered to obtain a powder product, washed with distilled water several times, and dried under vacuum at 100°C. Dispersant and water phase, liquid separation and recycling.
[0050] The prepared polymer material is tested by fluorine NMR and shows that the weight percentage of α,...
Embodiment 2
[0055] (1) Polymerization reaction
[0056] Add 23.2g of perfluoroalkyl ether containing melamine structure and 185g of distilled water as dispersant and solvent in a 1L high-pressure stainless steel reaction kettle equipped with stirring, heating, and nitrogen feeding devices, α, β, β-trifluorostyrene 21.5 g and 0.2 g of dibenzoyl peroxide, replace the air in the reactor with high-purity nitrogen, pass through 95 g of tetrafluoroethylene and 6 g of perfluoromethyl vinyl ether, heat up to 80 ° C and stir for 6 hours, and cool after the reaction. Deflate to make the pressure in the kettle become normal pressure, release the product from the discharge pipe, precipitate in a large amount of water, filter to obtain a powder product, wash with distilled water several times, and dry under vacuum at 100°C. Dispersant and water phase, liquid separation and recycling.
[0057] The prepared polymer material shows that α, β, β-trifluorostyrene weight percent is 15.97%, perfluoromethyl v...
Embodiment 3
[0062] (1) Polymerization reaction
[0063] Add 23.2g of perfluoroalkyl ether containing melamine structure and 185g of distilled water in a 1L high-pressure stainless steel reaction kettle equipped with stirring, heating, and nitrogen feeding devices as dispersant and solvent, α, β, β-trifluorostyrene 22.9 g and 0.2g of azobisisobutyronitrile, replace the air in the reactor with high-purity nitrogen, pass through 95g of tetrafluoroethylene and 6g of hexafluoropropylene, raise the temperature to 80°C and stir for 6h, cool down after the reaction, and release the gas to make The pressure inside the kettle becomes normal pressure, the product is released from the discharge pipe, precipitated in a large amount of water, filtered to obtain a powder product, washed with distilled water several times, and dried under vacuum at 100°C. Dispersant and water phase, liquid separation and recycling.
[0064] The prepared polymer material is tested by fluorine NMR to show that the weight ...
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