▎ 摘　　要

NOVELTY - Ionic liquid-based nano-fluid type wide-temperature heat-conducting oil comprises 80-98 pts. wt. ionic liquids, 1-10 pts. wt. nanoparticles, and 1-10 pts. wt. additives. USE - Used as ionic liquid-based nano-fluid type wide-temperature heat-conducting oil. ADVANTAGE - The obtained heat transfer oil has extremely low vapor pressure, non-flammability, low thermal expansion coefficient, superior thermal stability, extremely high thermal conductivity and extremely low corrosiveness. The production process is relatively simple, the cost is low, the service life can reach 10 years, energy saving and environmental protection, convenient transportation and operation. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing the ionic liquid-based nanofluid type wide-temperature region heat-conducting oil, comprising (i) adding nanoparticles to the ionic liquid, and stirring under vacuum or normal pressure for 1-5 hours, and (ii) adding additives, stirring in vacuum for 1-5 hours, and placing under normal pressure for 1-6 hours.