▎ 摘　　要

NOVELTY - The utility model claims a device for preparing graphene nano-fluid by supercritical carbon dioxide, comprising a carbon dioxide supply device, which are connected in turn, a mixing device, a pressurizing device, a high-pressure container, further comprising vacuumizing the inside of the mixing device of the vacuum device. The utility model device has simple operation, will not damage the structure and properties of the graphene, which can obtain high-quality graphene nano-fluid of the supercritical carbon dioxide. This utility model device for preparing the special property of supercritical carbon dioxide fluid has low viscosity, high diffusivity and high dissolving capacity.