Method for preparing cation exchange membrane by hybridization of plasma modified carbon nanotubes and PVDF
A technology of cation exchange membrane and plasma, which is applied in the preparation of cation exchange membrane and the field of cation exchange membrane prepared by hybridization of ionic modified carbon nanotubes and PVDF, can solve the problem of poor combination of organic polymer materials, mechanical properties and electrical properties. Limited performance, affecting the modification effect of the hybrid membrane, etc., to achieve excellent mechanical properties and electrical and thermal conductivity, improve mechanical properties, and enhance the effect of anti-pollution ability
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Embodiment 1
[0035] Add 0.5% carbon nanotubes to the toluene solution, sonicate for 1 h, and then evenly coat the surface of the glass sheet, and evaporate the toluene at 70°C; put the glass sheet coated with carbon nanotubes into the plasma chamber to 0.5L / min into the CF 4 , after removing the air in the cavity, the carbon nanotubes were treated with corona for 0.5 min under the condition of a power of 100 W, and then the treated carbon nanotubes were heated at 70° C. for 2 hours to obtain modified carbon nanotubes.
[0036] Disperse 0.3% modified carbon nanotubes into 65% toluene solution, sonicate for 0.5h, then add 10% polyvinylidene fluoride to the dispersion in batches, and then sonicate the mixture for 0.5h; Add 4% divinylbenzene, 20% glycidyl methacrylate, 0.5% polyvinylpyrrolidone and 0.2% dibenzoyl peroxide, and magnetically stir for 2 hours to obtain a casting solution; at room temperature, cast Seal the membrane liquid and avoid light for 18 hours, then sonicate for 0.5 hours...
Embodiment 2
[0039] Add 1% carbon nanotubes to the N,N-dimethylacetamide solution, sonicate for 2 hours, and then evenly coat the surface of the glass sheet, and evaporate N,N-dimethylacetamide at 80°C; Put the glass sheet coated with carbon nanotubes into the plasma chamber, and flow CF at a rate of 1L / min 4 , after removing the air in the cavity, the carbon nanotubes were treated with corona for 3 minutes at a power of 150 W, and then the treated carbon nanotubes were heated at 80° C. for 2 hours to obtain modified carbon nanotubes.
[0040] Disperse 1% of modified carbon nanotubes into 60% N,N-dimethylacetamide solution, sonicate for 1 hour, then add 15% polyvinylidene fluoride to the dispersion in batches, and then sonicate the mixture 1h; add 5% divinylbenzene, 18% glycidyl methacrylate, 0.8% polyvinylpyrrolidone and 0.2% azobisisobutyronitrile to the mixed solution in sequence, and stir magnetically for 3 hours to obtain a casting solution; At room temperature, seal the casting solu...
Embodiment 3
[0043] Add 2% carbon nanotubes to the dimethyl sulfoxide solution, sonicate for 3 hours, and then evenly coat the surface of the glass sheet, and evaporate the dimethyl sulfoxide at 80°C; place the glass sheet coated with carbon nanotubes into the plasma chamber, and CF was introduced at a rate of 2L / min 4After removing the air in the cavity, the carbon nanotubes were treated with corona for 5 minutes at a power of 200 W, and then the treated carbon nanotubes were heated at 90° C. for 3 hours to obtain modified carbon nanotubes.
[0044] Disperse 2% of the modified carbon nanotubes into a 55% dimethyl sulfoxide solution, sonicate for 2 hours, then add 15% polyvinylidene fluoride to the dispersion in batches, and then sonicate the mixture for 2 hours; Add 5% divinylbenzene, 22% glycidyl methacrylate, 0.7% polyvinylpyrrolidone and 0.3% dibenzoyl peroxide in sequence, and magnetically stir for 4 hours to obtain a casting solution; at room temperature, Seal the casting solution, ...
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