A kind of preparation method of expanded graphite
A technology of expanded graphite and flake graphite, which is applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of continuous production of graphite and long production cycle of expanded graphite, and achieve complete oxidation of graphite and short production cycle , the effect of simple steps
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Embodiment 1
[0035] The present embodiment provides a kind of preparation method of expanded graphite, comprises the steps:
[0036] S1. Configure the first mixed solution, including sodium chlorate, perchloric acid and phosphoric acid; the ratio of the sodium chlorate, the perchloric acid and the phosphoric acid is 1g: 4mL: 1mL;
[0037] S2. Add the first mixed solution into the graphite flakes, and stir at 100 r / min for 3 minutes at 30° C., and then stir at 300 r / min for 20 minutes to obtain the first mixed system.
[0038] As an embodiment of the present invention, in this embodiment, the ratio of the flake graphite to the first mixed solution is 3g:4mL; the flake graphite is 30 mesh.
[0039] The first mixing system was subjected to ultrasonic vibration for the first time for 8 minutes, and the ultrasonic power was 600w.
[0040] S3. Prepare a second mixed solution, including potassium permanganate and perchloric acid; the ratio of the potassium permanganate and the perchloric acid is...
Embodiment 2
[0049] The present embodiment provides a kind of preparation method of expanded graphite, comprises the steps:
[0050] S1. Configure the first mixed solution, including sodium chlorate, perchloric acid and phosphoric acid; the ratio of the sodium chlorate, the perchloric acid and the phosphoric acid is 2g: 6mL: 0.1mL;
[0051] S2. Add the first mixed solution into the graphite flakes, and stir at 80 r / min for 5 min at 20° C., and then stir at 350 r / min for 10 min to obtain the first mixed system.
[0052] As an embodiment of the present invention, in this embodiment, the ratio of the flake graphite to the first mixed solution is 2 g: 1 mL; the flake graphite is 20 mesh.
[0053] The first mixing system was subjected to ultrasonic vibration for the first time for 5 minutes, and the ultrasonic power was 800w.
[0054] S3. Prepare a second mixed solution, including potassium permanganate and perchloric acid; the ratio of the potassium permanganate and the perchloric acid is 0.1...
Embodiment 3
[0062] The present embodiment provides a kind of preparation method of expanded graphite, comprises the steps:
[0063] S1. Configure the first mixed solution, including sodium chlorate, perchloric acid and phosphoric acid; the ratio of the sodium chlorate, the perchloric acid and the phosphoric acid is 0.1g: 1mL: 2mL;
[0064] S2. Add the first mixed solution into the graphite flakes, and stir at 120 r / min for 1 min at 45° C., and then stir at 280 r / min for 30 min to obtain the first mixed system.
[0065] As an embodiment of the present invention, in this embodiment, the ratio of the flake graphite to the first mixed solution is 1 g:2mL; the flake graphite is 35 mesh.
[0066] The first mixing system was subjected to ultrasonic vibration for the first time for 10 minutes, and the ultrasonic power was 500w.
[0067] S3. Prepare a second mixed solution, including potassium permanganate and perchloric acid; the ratio of the potassium permanganate and the perchloric acid is 2g:...
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