A kind of filled modified polyurethane film and preparation method thereof
A polyurethane membrane and modification technology, applied in chemical instruments and methods, membranes, membrane technology, etc., can solve problems such as difficult dispersion and weak affinity, and achieve the effects of improved membrane separation performance, easy operation, and good selectivity
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Embodiment 1
[0042] (1) Preparation of ZIF-8 nanoparticles
[0043] Will contain 2.933g (9.87mmol) commercially available Zn(NO 3 ) 2 ·6H 2 200 mL of methanol solution of O was quickly poured into 200 mL of methanol solution containing 6.489 g (79.04 mmol) of commercially available 2-methylimidazole, the mixture slowly became turbid, and after standing for 1 hour, the nanocrystals were separated from the milky dispersion by centrifugation, And wash with fresh methanol to obtain ZIF-8 nanoparticles;
[0044] (2) Preparation of aminated ZIF-8 particles
[0045] Take by weighing the ZIF-8 nanoparticles that 0.5g step (1) makes, immerse in 50mL concentration and be the ammoniacal solution of 3mol / L, obtain mixture, mixture is placed in 100mL glass beaker, beaker is placed in constant temperature water bath, Shake at room temperature for 24 hours, then transfer the beaker to a heating plate and heat to 140°C until the ammonia solution is completely volatilized. Finally, wash the above produ...
Embodiment 2
[0053] (1) Preparation of ZIF-8 nanoparticles
[0054] Will contain 2.933g (9.87mmol) commercially available Zn(NO 3 ) 2 ·6H 2 200 mL of methanol solution of O was quickly poured into 200 mL of methanol solution containing 6.489 g (79.04 mmol) of commercially available 2-methylimidazole, the mixture slowly became turbid, and after standing for 1 hour, the nanocrystals were separated from the milky dispersion by centrifugation, And wash with fresh methanol to obtain ZIF-8 nanoparticles;
[0055] (2) Preparation of aminated ZIF-8 particles
[0056] Take by weighing the ZIF-8 nanoparticle that 0.5g step (1) makes, be immersed in the ammoniacal solution of 3mol / L in 50mL concentration, the mixture is placed in the 100mL glass beaker, above-mentioned beaker is placed in the constant temperature water bath, at room temperature Shake for 24 hours under the same conditions, then transfer the beaker to the heating plate and heat to 140°C until the ammonia solution is completely vol...
Embodiment 3
[0064] (1) Preparation of ZIF-8 nanoparticles
[0065] Will contain 2.933g (9.87mmol) commercially available Zn(NO 3 ) 2 ·6H 2 200 mL of methanol solution of O was quickly poured into 200 mL of methanol solution containing 6.489 g (79.04 mmol) of commercially available 2-methylimidazole, the mixture slowly became turbid, and after standing for 1 hour, the nanocrystals were separated from the milky dispersion by centrifugation, And wash with fresh methanol to obtain ZIF-8 nanoparticles;
[0066] (2) Preparation of aminated ZIF-8 particles
[0067] Take by weighing the ZIF-8 nanoparticle that 0.5g step (1) makes, be immersed in the ammoniacal solution of 3mol / L in 50mL concentration, mixture is placed in the 100mL glass beaker, above-mentioned beaker is placed in constant temperature water bath, in Shake at room temperature for 24 hours, then transfer the beaker to a heating plate and heat to 140°C. Until the ammonia solution is completely volatilized; finally, the above pr...
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Abstract
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