High-purity graphene prepared by taking garbage as raw material as well as preparation method and application of high-purity graphene
A high-purity, graphene technology, applied in graphene, chemical instruments and methods, nano-carbon and other directions, can solve the problems of high production cost, small output and small production scale of graphene, so as to reduce production cost, increase output, The effect of expanding production scale
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Embodiment 1
[0047] Embodiment 1: the preparation method of graphene
[0048] In this embodiment, the raw material adopts mixed garbage containing garbage plastics, and the specific implementation process steps are as follows:
[0049] 1. Pre-treatment: (1) First mix the mixture of garbage plastics and other types of garbage into 0.1% DCP, 0.05% double 25 and 1% GD of the total mass of garbage, put it into a graphite tank, and place the whole in a tube furnace ( or chamber furnace), heat to 180°C and hold for 100 seconds;
[0050] (2) Take out the processed mixture and remove the liquid part.
[0051] 2. Laser scanning: Put (2) the treated mixture under the laser, about 10mm thick, using 350W / mm 2 Laser power density, the laser uses 10.6 micron CO 2 Laser, laser power 1000W, focused beam area of about 2.83 square millimeters, beam diameter of about 0.9mm, laser pulse width of 14 microseconds, spot diameter of about 1.9mm, laser scanning rate of 3.5 inch / s, the thickness of the interme...
Embodiment 2
[0062] Embodiment 2: improve the productive rate of graphene preparation method
[0063] This embodiment improves the carbon storage rate in the raw material and obtains a higher yield of graphene. The specific methods are as follows:
[0064] 1. Pre-treatment: (1) First mix the mixture of garbage plastics and other types of garbage into 0.1% DCP, 0.05% double 25, 1% GD, and 3% carbon black in the total mass of the garbage, and put it into the graphite tank. Place in a tube furnace (or box furnace), heat to 180 degrees Celsius and stay for 100 seconds to make the raw materials undergo cross-linking reaction;
[0065] (2) Take out the processed mixture and remove the liquid part.
[0066] 2. Laser scanning: (2) Put the processed mixture under the laser, about 10mm thick, using 350W / mm 2 Laser power density, the laser uses 10.6 micron CO 2 Laser, laser power 300W, focused beam area of about 0.85 square millimeters, laser pulse width of 14 microseconds, spot diameter of abou...
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