▎ 摘　　要

NOVELTY - The preparation method of nano liquid absorbing core comprises taking metal core. Graphene with hydrophilic functional groups is grown in situ on the surface of the metal core. USE - Preparation method of nano liquid absorbing core used in intelligent product or electronic product. ADVANTAGE - The method improves the hydrophilicity of the liquid-absorbing core while not reducing the heat-conducting performance of the material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a nano liquid absorbing core comprising a copper framework, a graphene framework, a coating layer and a hydrophilic functional group.