A method for surface modification of carbon nanotubes and modified carbon nanotubes
A carbon nanotube and surface modification technology, applied in the field of carbon nanotube surface modification and modified carbon nanotubes, can solve the problems of easy detachment and poor interface bonding performance, and achieve mild reaction conditions, convenient operation and easy implementation. Effect
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Embodiment 1
[0041] The method for synthesizing hexa-(4-aminophenoxy)cyclotriphosphazene (HACP) provided by this embodiment includes:
[0042] 1. Mix 10.8g of anhydrous potassium carbonate (K 2 CO 3 ) was ground into powder, and added to 80mL acetone together with 7.8g paracetamol; after magnetic stirring at room temperature for 30min, feed high-purity nitrogen, then add 2.5g hexachlorocyclotriphosphazene (HCCP), and then Magnetic stirring was carried out at 70° C. for 24 h.
[0043]After the reaction is finished, cool the solution to room temperature and perform vacuum filtration to take the filtrate; the filtrate is rotary evaporated into a viscous shape, and after adding excess deionized water, it is freeze-dried to obtain a white powder that is hexa-(4-acetamidobenzene Oxy)cyclotriphosphazene.
[0044] 2. Dissolve 9g of hexa-(4-acetamidophenoxy)cyclotriphosphazene in 180mL of methanol, then slowly pour 108mL of concentrated sulfuric acid into it, and then stir and reflux at 80°C for...
Embodiment 2
[0051] This embodiment provides a method for surface modification of carbon nanotubes, including:
[0052] 1. Dissolve 100mg of carbon nanotubes in 50mL of DMSO, and after ultrasonic treatment for 1 hour under the cell pulverizer, the first solution is obtained, which is ready for use;
[0053] 2. Dissolve 0.035g HCCP and 0.083g HACP in 50mL DMSO, mix well to obtain the second solution, which is ready for use;
[0054] 3. Add 2mL of acid-binding agent triethylamine to the first solution first, and then slowly add the second solution to the first solution through a constant pressure funnel, and drop it for about 1 hour; , and then vacuum filtration to collect the filter residue; use ethanol and deionized water to ultrasonically wash 2 to 3 times at room temperature, and then dry in a vacuum box to obtain modified carbon nanotubes with a coating thickness of about 10 nm.
[0055] In the present invention, theoretically, the carbon nanotubes, the two reaction monomers and the ac...
Embodiment 3
[0058] The difference between the method provided in this example and Example 2 is: 0.087g of HCCP; 0.021g of HACP; and the thickness of the obtained coating layer is 60nm.
[0059] The rest are basically the same as those in Embodiment 2, and will not be repeated here.
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