▎ 摘　　要

NOVELTY - A heat transfer medium comprises 965-985 pts. wt. hydrocarbon, 1-5 pts. wt. antioxidant, 2-7 pts. wt. detergent, 5-15 pts. wt. nano metal powder, 1-5 pts. wt. modified graphene, 1-5 pts. wt. stabilizer, and 3-10 pts. wt. dispersant. USE - Heat transfer medium. ADVANTAGE - The heat transfer medium has improved thermal conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the heat transfer medium comprising heating hydrocarbon to 140-150 degrees C and 0.08 MPa for 1-2 hours under protection of inert gas; adding stabilizer and dispersant, stirring, and processing for 30-40 minutes; adding nano-metal powder and modified graphene, stirring for 20-30 minutes, and sonicating for 50-60 minutes; adding antioxidant and detergent, stirring for 20-30 minutes, cooling to 60 degrees C, continuously stirring for 10-20 minutes, and cooling to room temperature.