▎ 摘　　要

NOVELTY - The method involves dispersing graphene in a fluorinated solution to form a precursor solution, so that the graphene is 2-5 percentage by weight. A water flow condensation circulation system is arranged outside the precursor solution to ensure that the precursor solution is always at room temperature, and ultrasonic vibration is performed on the precursor solution. The precursor solution after ultrasonic vibration is irradiated with a pulsed laser, and the solution is sampled every 2 hours to test the resistivity of the solution. The irradiation is stopped to obtain the nano-diamond fluoride fluid concentrate, when the resistivity is greater than specific range. The nano-diamond fluoride fluid concentrate is added to the fluoride fluid solution in a volume ratio of 1:100 to obtain the nano-diamond fluoride fluid. The graphene is a single-layer graphene or a multi-layer graphene. The fluorinated liquid is a fluorocarbon compound. USE - Method for preparing nano-diamond fluorinated liquid fluid used in liquid cooling system of electronic device. ADVANTAGE - The method has a wide range of raw materials and low price. The production steps are simple, which is very convenient for mass industrial production.