Graphene preparation method and mass production device
A technology of graphene and graphene powder, which is applied in the field of graphene preparation, can solve the problems of increasing the interlayer spacing of graphite powder, incapable of mass production, poor safety and environmental protection, etc., and achieve mass production problems, stable product quality, and large-scale expansion produced effect
Pending Publication Date: 2019-02-15
北京若水金枫科技有限公司
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The invention discloses a graphene preparation method and a mass production device. The graphene preparation method comprises the following steps: adding graphite powder, a weak acid or a weak alkaliand water into a microwave reaction kettle, stirring, and wetting to obtain a graphite turbid liquid; carrying out microwave peeling in the microwave reaction kettle, carrying out mechanical peeling in a mechanical peeling device, circulating microwave and/or mechanical peeling according to demands to obtain a graphene turbid liquid; carrying out suction filtration, washing and drying by using a cleaning and drying device to obtain graphene powder, wherein the weak acid or the weak alkali is one or more of tannic acid, sodium gluconate and hydrogen peroxide; the ratio of the graphite powder tothe weak acid or the weak alkali to the water is (1-10g):(0.1-1g):(0.5-1L); and the temperature of mechanical peeling is 60 DEG C or less. No strong acid, strong alkali or strong oxidant is needed tobe introduced to oxidize or intercalate graphite/graphene; raw materials are safe and environmentally-friendly, wide in source and low in cost; no waste acid, wastewater, waste gas or pollution is generated in the preparation process, in addition, on-scale production is achieved, and the equipment cost is low.
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| Property | Measurement | Unit |
| Thickness | 0.5 ~ 1.0 | nm |
| tensile | MPa | |
| Particle size | Pa | |
| strength | 10 |
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