Preparation method of elemental copper-clad multi-wall carbon nanotube/aluminum matrix composite semi-solid billet
A technology for multi-walled carbon nanotubes and aluminum-based composite materials, which is applied in the field of material preparation, can solve the problems of lack of carbon nanotube-reinforced aluminum-based composite materials preparation and forming technology, unfavorable performance improvement of composite materials, and easy agglomeration of carbon nanotubes. , to achieve the effect of reducing the probability of agglomeration, low risk factor and low reaction temperature
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Embodiment 1
[0033] Multi-walled carbon nanotubes were ultrasonically pre-dispersed in pure nitric acid solution for 8 hours at 60°C. After cooling to room temperature, they were washed with deionized water, centrifuged until neutral, and then dried in a vacuum oven for later use. Copper nitrate and the above-mentioned dried multi-walled carbon nanotubes were used as raw materials, and were added into pure ethanol for ultrasonication for 40 minutes; wherein the molar ratio of multi-walled carbon nanotubes, copper nitrate and ethanol was 1:0.4:127, and the suspension of multi-walled carbon nanotubes was obtained. liquid; the suspension is introduced into the hydrothermal reaction kettle, wherein the volume of the suspension accounts for 25% of the volume of the reaction kettle. Then put it into the reaction furnace to heat, raise the temperature to 200°C at 3°C / min, keep it for 2 hours, then raise the temperature to 300°C at 3°C / min, and keep it for 8 hours; seal and cool to room temperature...
Embodiment 2
[0036] Multi-walled carbon nanotubes were ultrasonically pre-dispersed in pure nitric acid solution for 8 hours at 60°C. After cooling to room temperature, they were washed with deionized water, centrifuged until neutral, and then dried in a vacuum oven for later use. Copper nitrate and the above-mentioned dried multi-walled carbon nanotubes were used as raw materials, and were added into pure ethanol for ultrasonication for 50 minutes; wherein the molar ratio of carbon nanotubes, copper nitrate and ethanol was 1:0.6:127 to obtain a multi-walled carbon nanotube suspension; The suspension is introduced into a hydrothermal reaction kettle, wherein the volume of the suspension accounts for 25% of the volume of the reaction kettle. Then put it into the reaction furnace to heat, raise the temperature to 200°C at 5°C / min, keep it warm for 1h, then raise the temperature to 300°C at 3°C / min, keep it warm for 8h; seal and cool to room temperature, filter and dry at low temperature, then...
Embodiment 3
[0039] Multi-walled carbon nanotubes were ultrasonically pre-dispersed in pure nitric acid solution for 8 hours at 60°C. After cooling to room temperature, they were washed with deionized water, centrifuged until neutral, and then dried in a vacuum oven for later use. Copper nitrate and the above-mentioned dried multi-walled carbon nanotubes were used as raw materials, and were added into pure ethanol for ultrasonication for 60 minutes; wherein the molar ratio of multi-walled carbon nanotubes, copper nitrate and ethanol was 1:0.8:127, and the suspension of multi-walled carbon nanotubes was obtained. liquid; the suspension is introduced into the hydrothermal reaction kettle, wherein the volume of the suspension accounts for 25% of the volume of the reaction kettle. Then put it into the reaction furnace to heat, raise the temperature to 200°C at 3°C / min, keep it for 1h, then raise the temperature to 300°C at 3°C / min, keep it for 10h; seal and cool to room temperature, filter and ...
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