A kind of preparation method of b4c nano sheet and b4c nano sheet
A nanosheet, boric acid technology, applied in nanotechnology, chemical instruments and methods, inorganic chemistry, etc., can solve the problem of inability to form regular arrangement of boron carbide nanosheets, achieve excellent interface wettability, high yield and purity, Easy-to-use effects
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Embodiment 1
[0040] B of this embodiment 4 The preparation method of C nanosheet, comprises the following steps:
[0041] 1) According to the ratio of 4:1 in mass ratio, get boric acid 40g, pulverized coal 10g and add in the ball mill tank of planetary ball mill, and add sodium carbonate 5g (the addition quality of sodium carbonate is boric acid, 10% of the total mass of pulverized coal) and 150ml of ethanol was wet-milled for 1 hour with a planetary ball mill at a ball-to-material ratio of 10:1 and a rotating speed of 150r / min, and dried at 90°C after mixing evenly to obtain a mixed powder of boric acid-coated coal powder;
[0042] 2) The mixed powder obtained in step 1) was pre-pressed into a sheet at 5 MPa, and then subjected to cold isostatic pressing at 150 MPa for 0.5 min to obtain a sheet;
[0043] 3) Embed the flake obtained in step 2) into the quartz sand contained in the alumina crucible, place the crucible together with the contents in the resonant cavity of a multi-mode cavity...
Embodiment 2
[0047] B of this embodiment 4 The preparation method of C nanosheet, comprises the following steps:
[0048] 1) According to the ratio of 3:1 in mass ratio, get boric acid 30g, pulverized coal 10g and add in the ball mill tank of planetary ball mill, and add sodium carbonate 2g (the addition quality of sodium carbonate is boric acid, 5% of the total mass of pulverized coal) and 100ml of ethanol was wet-milled for 2 hours with a planetary ball mill at a ball-to-material ratio of 10:1 and a rotating speed of 150r / min. After mixing evenly, it was dried at 100°C to obtain a mixed powder of boric acid-wrapped pulverized coal;
[0049] 2) The mixed powder obtained in step 1) was pre-pressed into a sheet at 5 MPa, and then subjected to cold isostatic pressing at 180 MPa for 1 min to obtain a sheet;
[0050] 3) Embed the flake obtained in step 2) into the quartz sand contained in the alumina crucible, place the crucible together with the contents in the resonant cavity of a multi-mod...
Embodiment 3
[0054] B of this embodiment 4 The preparation method of C nanosheet, comprises the following steps:
[0055] 1) Take 30g of boric acid and 10g of pulverized coal into the ball mill tank of the planetary ball mill according to the mass ratio of 3:1, and add 4g of sodium bicarbonate (the added quality of sodium carbonate is 10% of the total mass of boric acid and pulverized coal) and ethanol 100ml, use a planetary ball mill to perform wet ball milling for 1.5h under the conditions of a ball-to-material ratio of 10:1 and a rotational speed of 150r / min, mix well and then dry at 105°C to obtain a mixed powder of boric acid-coated coal powder ;
[0056] 2) The mixed powder obtained in step 1) was pre-pressed into a sheet at 5 MPa, and then subjected to cold isostatic pressing at 160 MPa for 0.5 min to obtain a sheet;
[0057] 3) Embed the flake obtained in step 2) into the quartz sand contained in the alumina crucible, place the crucible together with the contents in the resonant ...
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