A preparation method for catalytic growth of carbon nanotubes on the surface of carbon fiber fabrics using a bimetallic catalyst
A technology of bimetallic catalyst and carbon fiber fabric, which is applied in the fields of carbon fiber, fiber processing, textiles and papermaking, etc., can solve the problems of inability to produce samples on a large scale, damage to fiber mechanical properties, high preparation temperature, etc., and achieve easy promotion, low cost, and easy preparation The effect of simple method
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[0035] As introduced in the background technology, when growing carbon nanotubes on the surface of carbon fibers or carbon fiber fabrics in the prior art, most of them use a single catalyst, and carbon nanotubes need to be synthesized at high temperatures above 600°C, which will inevitably affect the performance of the fibers. impact, and the space of the reaction device is small, the problem that the finished product cannot be mass-produced. Therefore, the present invention proposes a kind of preparation method that uses bimetallic catalyst to catalyze the growth of carbon nanotubes on the surface of carbon fiber fabric, comprising the following steps:
[0036]Step 1: Put the carbon fiber fabric into a vertical CVD furnace, heat it to 450°C for 1.5h at a heating rate of 15°C / min under a nitrogen atmosphere, remove the sizing agent on the fiber surface, and take it out after cooling to room temperature;
[0037] Step 2: Put the carbon fiber fabric obtained in step 1 into a 5wt...
Embodiment 1
[0045] Step 1: Put the carbon fiber fabric into a vertical CVD furnace, heat it to 450°C for 1.5h at a heating rate of 15°C / min under a nitrogen atmosphere, remove the sizing agent on the fiber surface, and take it out after cooling to room temperature;
[0046] Step 2: Put the carbon fiber fabric obtained in step 1 into a 5wt% nitric acid solution, put it in an oven and heat it to 90°C for 1.5h, take it out and wash the nitric acid solution on the surface with deionized water, and put it in an oven to dry. Dry;
[0047] Step 3: Use ferric nitrate and zinc sulfate as solutes, and use absolute ethanol as solvent to prepare a bimetallic catalyst solution with a molar ratio of 3:1, the total concentration of metal ions in the solution is 0.05mol / L, and then step 2 is processed The treated carbon fiber fabric was put into the prepared catalyst solution, dipped for 10 minutes, and dried at room temperature after being taken out;
[0048] Step 4: Put the carbon fiber fabric treated...
Embodiment 2
[0051] Step 1: Put the carbon fiber fabric into a vertical CVD furnace, heat it to 450°C for 1.5h at a heating rate of 15°C / min under a nitrogen atmosphere, remove the sizing agent on the fiber surface, and take it out after cooling to room temperature;
[0052] Step 2: Put the carbon fiber fabric obtained in step 1 into a 5wt% nitric acid solution, put it in an oven and heat it to 90°C for 1.5h, take it out and wash the nitric acid solution on the surface with deionized water, and put it in an oven to dry. Dry;
[0053] Step 3: Use ferric nitrate and zinc sulfate as solutes, and use absolute ethanol as solvent to prepare a bimetallic catalyst solution with a molar ratio of 3:1, the total concentration of metal ions in the solution is 0.05mol / L, and then step 2 is processed The treated carbon fiber fabric was put into the prepared catalyst solution, dipped for 10 minutes, and dried at room temperature after being taken out;
[0054] Step 4: Put the carbon fiber fabric treated...
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