Method for preparing graphite by using hydraulic cavitation liquid-phase stripping
A liquid phase exfoliation and graphene technology, applied in the directions of graphene, single-layer graphene, chemical instruments and methods, etc., can solve the problems of low exfoliation efficiency, low output and high equipment requirements, and achieve easy large-scale industrial production, The effect of low production cost and simple equipment
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Embodiment 1
[0036] Combined with the manual figure 2 The technical scheme of the present invention is reacted in a self-made device: the device includes a raw material tank 1, a pump 2, a pressure gauge 3, an orifice 7 and a product tank 5, and the feed inlet of the pump 2 is connected to the raw material The tank 1 is connected, the discharge port is connected with the inlet of the orifice 7, and the outlet of the orifice 7 is connected with the product tank 6; the pressure gauge 3 is immersed in the constant temperature water bath 5; the pump 2 A pressure gauge 3 is provided on the connecting pipeline with the orifice plate 7; both ends of the orifice plate 7 are connected to the pipeline through flanges.
[0037] 1) Take pure isopropanol as solvent, Tween 80 as surfactant, configure graphite concentration as the dispersion liquid of 3g / L, surfactant concentration 0.5g / L, fully stir, obtain graphite dispersion liquid;
[0038] 2) Use a pump to send the graphite dispersion liquid at a ...
Embodiment 2
[0041] Combined with the manual figure 1The technical scheme of the present invention reacts in a self-made device: the device comprises a raw material tank 1, a pump 2, a pressure gauge 3, a valve 4 and a product tank 5, and the feed inlet of the pump 2 and the raw material tank 1 connection, the discharge port is connected with the inlet of the valve 4, and the outlet of the valve 4 is connected with the product tank 6; the pressure gauge 3 is immersed in the constant temperature water bath 5; the pump 2 and the valve 4 A pressure gauge 3 is provided on the connecting pipeline.
[0042] 1) Take pure N-methylpyrrolidone as a solvent and sodium taurodeoxycholate as a surfactant, configure a dispersion with a graphite concentration of 30 g / L and a surfactant concentration of 0.1 g / L, and fully stir to obtain a graphite dispersion;
[0043] 2) Use a pump to send the graphite dispersion at a flow rate of 1L / h into a valve with an opening of 0.02mm, maintain the cavitation pressu...
Embodiment 3
[0046] Combined with the manual image 3 The technical scheme of the present invention reacts in the self-made device: described device comprises raw material tank 1, pump 2, pressure gauge 3, Venturi tube 8 and product tank 5, and the inlet of described pump 2 and The raw material tank 1 is connected, the outlet is connected with the inlet of the Venturi tube 8, and the outlet of the Venturi tube 8 is connected with the product tank 6; the pressure gauge 3 is immersed in the constant temperature water bath 5; A pressure gauge 3 is provided on the connecting pipeline between the pump 2 and the Venturi tube 8 .
[0047] 1) Take the N-methylpyrrolidone-water mixed solution with a volume ratio of 2:1 as the solvent, sodium dodecylbenzenesulfonate as the surfactant, configure the graphite concentration as 50g / L, and the surfactant concentration as 0.1g / L The dispersion of L is fully stirred to obtain a graphite dispersion;
[0048] 2) Use a pump to send the graphite dispersion l...
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