Preparation method for carbon nanotube reinforced ferrous matrix composite
A technology of iron-based composite materials and carbon nanotubes, applied in the field of iron-based composite materials, can solve problems such as less research, and achieve the effects of improving mechanical properties, improving surface activity, and high toughness
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Embodiment 1
[0034] Example 1 Preparation of copper-coated single-walled carbon nanotubes
[0035] (1) The dispersion of single-walled carbon nanotubes is to add deionized water, 0.35w / v% SDBS and 0.025w / v% single-walled carbon nanotubes in a beaker, and use a frequency of 35kHz, A probe-type ultrasonic generator with a power of 60W was used for ultrasonic treatment for 30 minutes, during which time the ultrasound was stopped for 5 seconds every 5 seconds.
[0036] Purification and pretreatment of single-walled carbon nanotubes: use 6mol / L HNO3 to reflux the above-mentioned fully dispersed single-walled carbon nanotubes at 118°C for 5h, cool, filter and wash with deionized water until neutral, and then use 6mol / L HNO3 NaOH was refluxed at 118°C for 3 hours, cooled, filtered and washed with deionized water until the pH value was 7, then refluxed with 6mol / L HCl at 118°C for 3 hours, cooled, filtered and washed with deionized water until the pH value was 7; during purification The concentra...
Embodiment 2
[0040] Embodiment two prepares copper-coated graphene
[0041] Copper-coated graphene is prepared by depositing metallic copper on the surface of graphene (number of layers 1-10) by means of DC magnetron sputtering. The copper target with a purity of 99.99% was first ground with fine sandpaper to remove the surface oxide film before installation, then cleaned with acetone, dried, and pre-sputtered for 5 minutes before deposition by DC magnetron sputtering. Graphene separates, removes metal oxides and other impurities on the target surface, and ensures the purity of the copper film deposited on the subsequent graphene surface. The process parameters of DC magnetron sputtering are: when the vacuum degree reaches 0.1*10-3Pa, argon gas with a purity of 99.99% is introduced, the working pressure is 1.5Pa, the sputtering power is 100W, and the deposition time is 35min.
Embodiment 3
[0042] Example 3 Preparation of copper-coated carbon fibers
[0043] The following steps are used to prepare the carbon fibers by copper plating, which include:
[0044] Step A: Carbon Fiber Pretreatment
[0045] Surface degumming: Soak in the boiling acetone solution in the Soxhlet extractor and stir continuously with a stirring porcelain, the temperature is controlled at 70°C, and the stirring time is 240min;
[0046] Surface degreasing: Stir the degummed carbon fiber in 10% NaOH solution for 30 minutes at 25°C, wash the taken out carbon fiber with ethanol and deionized water successively, and dry it for later use;
[0047] Surface roughening: Use potassium persulfate solution with a mass fraction of 10% as the roughening solution, immerse the degreased carbon fiber, and stir continuously for 60 minutes; the roughened carbon fiber is cleaned with a mass fraction of 8% NaOH solution and deionized water To neutral, dry for use;
[0048] Surface activation: One-step method o...
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