Imidazole-microcapsule-supported heteropoly acid-sulfonated polyether ether ketone composite membrane, preparation and application thereof
A technology of sulfonated polyether ether ketone and loaded heteropolyacid, which is applied in electrochemical generators, fuel cells, electrical components, etc., to achieve the effects of strong controllability, abundant raw material sources, and high proton conductivity
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Embodiment 1
[0020] Add 28g of polyether ether ketone into 200ml of 98% sulfuric acid. at 40 o Stir in a C water bath for sulfonation reaction for 9 hours, precipitate the resulting reddish-brown viscous mixture in 2L of deionized water, soak for 3 days, rinse until the pH is 7, and dry at room temperature for 48 hours to obtain sulfonation with a sulfonation degree of 55%. Polyetheretherketone.
[0021] Add 10 mL tetraethyl orthosilicate and 5 mL ammonia water with a mass concentration of 25% to a mixture of 200 mL ethanol and 20 mL water, stir at room temperature for 24 hours, then add 1 mL MPS and stir for 24 hours, centrifuge at 6000 rpm, acetonitrile Washing, repeated three times to obtain silica microspheres grafted with active double bonds on the surface, with an average particle size of 150nm, ultrasonically disperse 0.2g of silica microspheres grafted with active double bonds on the surface in 80mL of acetonitrile, and then Add 0.30 mL of 1-vinylimidazole and ethylene glycol dim...
Embodiment 2
[0024] Add 30g of polyether ether ketone into 200ml of 98% sulfuric acid. at 50 o Stir in a C water bath for sulfonation reaction for 11 hours, precipitate the resulting reddish-brown viscous mixture in 2L of deionized water, soak for 3 days, rinse until the pH is 7, and dry at room temperature for 48 hours to obtain sulfonation with a sulfonation degree of 68%. Polyetheretherketone.
[0025]Add 18mL tetraethyl orthosilicate and 20mL ammonia water with a mass concentration of 25% to a mixture of 200mL ethanol and 20mL water, stir at room temperature for 24 hours, then add 1mL MPS and stir for 24 hours, then centrifuge at 6000 rpm, acetonitrile Washing, repeated three times to obtain silica microspheres grafted with active double bonds on the surface, with an average particle diameter of 300nm, ultrasonically dispersing 0.35g of silica submicrospheres grafted with active double bonds on the surface in 80mL of acetonitrile, and then Add 0.45mL of 1-vinylimidazole and ethylene ...
Embodiment 3
[0028] Add 30g of polyether ether ketone into 200ml of 98% sulfuric acid. at 50 o Stir in a C water bath for sulfonation reaction for 11 hours, precipitate the resulting reddish-brown viscous mixture in 2L of deionized water, soak for 3 days, rinse until the pH is 7, and dry at room temperature for 48 hours to obtain sulfonation with a sulfonation degree of 68%. Polyetheretherketone.
[0029] Add 18mL tetraethyl orthosilicate and 20mL ammonia water with a mass concentration of 25% to a mixture of 200mL ethanol and 20mL water, stir at room temperature for 24 hours, then add 1mL MPS and stir for 24 hours, then centrifuge at 6000 rpm, acetonitrile Washing, repeated three times to obtain silica microspheres grafted with active double bonds on the surface, with an average particle diameter of 300nm, ultrasonically dispersing 0.35g of silica submicrospheres grafted with active double bonds on the surface in 80mL of acetonitrile, and then Add 0.45mL of 1-vinylimidazole and ethylene...
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