Nanofiber membrane fabric with self-cleaning carbon nanotube modification and preparation method
A technology of carbon nanotube modification and nanofiber membrane, which is applied in fiber treatment, chemical instruments and methods, non-woven fabrics, etc., can solve the problems of composite material performance impact, low air permeability, high production cost, etc. Enhanced self-cleaning performance, excellent air permeability, and easy-to-obtain raw materials
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[0019] The steps of the preparation method of the electrospun nanofiber membrane fabric with self-cleaning carbon nanotube modification are as follows:
[0020] 1) Weigh a certain amount of multi-walled carbon nanotubes and disperse them in 60 mL of 4.0 mol / L HCl. After ultrasonic treatment for 2-3 h, wash with twice distilled water until neutral. 60 mL HNO 3 + H 2 SO 4 (Volume ratio 1:3) Ultrasonic treatment for 4-5 h, washed with deionized water until the pH is neutral, placed in a vacuum oven at 60-80°C for 6-10 h, and obtained surface modification by acid treatment and functionalization. Sexual carbon nanotubes;
[0021] 2) Dry the polymer at 60-90°C for 0.5-2 hours, then add it to the solvent, and stir evenly for 4-6 hours under airtight conditions at 80°C to fully dissolve it, and the solution is colorless Transparent liquid, to obtain a high molecular polymer solution with a concentration of 15% to 25%;
[0022] 3) A certain amount of carbon nanotubes is added to ...
Embodiment 1
[0027] 1) Weigh 1 g of multi-walled carbon nanotubes and disperse them in 60 mL of 4.0 mol / L HCl. After ultrasonic treatment for 2 hours, wash with twice distilled water until neutral. 60 mL HNO 3 + H 2 SO 4 (Volume ratio 1:3) Sonicate for 4 h, wash with deionized water until the pH is neutral, place in a vacuum oven at 60°C for 10 h in vacuum, and obtain surface-modified carbon nanotubes by acid treatment and functionalization;
[0028] 2) Dry 10g of PU at 60°C for 2 hours, then add it to 55g of N,N-dimethylformamide, and stir evenly at 80°C for 4 hours under airtight conditions to fully dissolve it, and the solution is free Color transparent liquid, obtains the PU solution that concentration is 15%;
[0029] 3) Add 0.075g of carbon nanotubes to 10g of N,N-dimethylformamide, and ultrasonically treat for 2 hours at room temperature to obtain a uniformly dispersed modified carbon nanotube solution;
[0030] 4) Add the dispersed carbon nanotube solution into the PU solution...
Embodiment 2
[0033] 1) Weigh 2 g of multi-walled carbon nanotubes and disperse them in 60 mL of 4.0 mol / L HCl. After ultrasonic treatment for 3 h, wash with twice distilled water until neutral. 60 mL HNO 3 + H 2 SO 4 (Volume ratio 1:3) Sonicate for 5 h, wash with deionized water until the pH is neutral, place in a vacuum oven at 80°C for 10 h in vacuum, and obtain surface-modified carbon nanotubes by acid treatment and functionalization;
[0034] 2) Dry 10g of PMMA at 90°C for 0.5 h, then add it to 55g of N,N-dimethylacetamide, stir evenly at 80°C for 4 h to fully dissolve, and the solution is colorless and transparent Liquid, obtaining concentration is the PMMA solution of 15%;
[0035] 3) Add 0.075g of carbon nanotubes to 10g of N,N-dimethylacetamide, and ultrasonically treat for 2 hours at room temperature to obtain a uniformly dispersed modified carbon nanotube solution;
[0036]4) Add the dispersed carbon nanotube solution into the PMMA solution and blend for 4 hours to obtain a ...
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