Preparation method of carbon nano tube loaded carbon fiber
A technology of carbon nanotubes and multi-walled carbon nanotubes, which is applied in the fields of carbon fiber, fiber treatment, textiles and papermaking, etc. It can solve the problems of changing the surface inertia and achieve the effect of improving interface strength, roughness and mechanical properties
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Embodiment 1
[0025] The method of loading carbon fibers with carbon nanotubes is carried out as follows:
[0026] 1. Oxidation treatment of carbon nanotubes
[0027] Add 2g of multi-walled carbon nanotubes to 200ml of mixed acid (concentrated nitric acid and concentrated sulfuric acid with a volume ratio of 1:3) solution, place it in ultrasonic treatment at 20°C for 1h, and then stir the dispersed carbon nanotube acid solution in a 50°C water bath After the reaction is completed for 4 hours, it is cooled to room temperature, suction filtered, and washed with deionized water until it is neutral to obtain oxidized carbon nanotubes.
[0028] Two surface grafting treatment of carbon nanotubes
[0029] Add 1g of the oxidized carbon nanotubes to an ethanol solution containing 3-aminopropyltriethoxysilane coupling agent with a mass fraction of carbon nanotubes of 5%, stir and treat at 50℃ for 3h, filter with suction, 120℃ Dry in a vacuum oven for 4 hours to obtain grafted carbon nanotubes.
[0030] Three...
Embodiment 2
[0036] 1. Oxidation treatment of carbon nanotubes
[0037] Add 2g of multi-walled carbon nanotubes into 200ml of concentrated nitric acid solution, place it in 50℃ ultrasonic treatment for 1h, then stir and react the dispersed carbon nanotube acid solution in a 50℃ water bath for 4h, cool to room temperature after the reaction, and filter with suction , Washed with deionized water until it is neutral to obtain oxidized carbon nanotubes.
[0038] Two surface grafting treatment of carbon nanotubes
[0039] Add 1g of the oxidized carbon nanotubes to an ethanol solution containing 3-aminopropyltriethoxysilane with a mass fraction of carbon nanotubes of 5%, stir for 3 hours at 50°C, filter with suction, and vacuum dry at 120°C 4h to obtain grafted carbon nanotubes.
[0040] Three oxidation treatment of carbon fiber
[0041] Add 10g of carbon fiber with surface removal sizing agent to 100ml of concentrated nitric acid and heat it in an oil bath at 80℃ for 3h; after the reaction, let it stan...
Embodiment 3
[0045] 1. Oxidation treatment of carbon nanotubes
[0046] Add 2g of multi-walled carbon nanotubes to 200ml of concentrated nitric acid solution and place them in 50℃ ultrasonic treatment for 0.5h, then stir the dispersed carbon nanotube acid solution in a 50℃ water bath for 4h, cool to room temperature after the reaction, pump Filter and wash with deionized water until it is neutral to obtain oxidized carbon nanotubes.
[0047] Two surface grafting treatment of carbon nanotubes
[0048] Add 1g of the oxidized carbon nanotubes to an ethanol solution containing 1% carbon nanotubes with a mass fraction of 3-aminopropyltriethoxysilane, stir for 3 hours at 50°C, filter with suction, and vacuum dry at 120°C 4h to obtain grafted carbon nanotubes.
[0049] Three oxidation treatment of carbon fiber
[0050] Add 10g of carbon fiber with surface sizing agent to 1000ml of concentrated nitric acid and heat it in an oil bath at 80°C for 3h; after the reaction, let it stand to room temperature, fil...
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