▎ 摘　　要

NOVELTY - Preparing high thermal conductivity insulating electrophoretic paint, comprises (i) adding graphene nanoplatelets (GNP) and dispersant into solvent, stirring at room temperature to obtain graphene dispersion; (ii) adding hexagonal boron nitride (hBN) and dispersant into the solvent, and stirring at room temperature to obtain hBN dispersion; centrifuging taking the supernatant, adding silane coupling agent hydrolyzate, stirring at room temperature for 2-3 hours to obtain a modified hBN dispersion; the silane coupling agent hydrolyzate is an aqueous solution of a silane coupling agent, and the silane coupling agent is an amino or epoxy silane coupling agent; the dispersant used in steps (i) and (ii) is the same, namely a polymer surfactant; (iii) mixing the graphene dispersion and the modified hBN dispersion into an additive; and (iv) mixing the additive with the electrophoretic paint to obtain an insulating electrophoretic paint with high thermal conductivity. USE - The electrophoretic paint is used for coating metal surface of electric vehicle battery, electronic element and satellite. ADVANTAGE - The method uses the combination dispersion of hexagonal boron nitride and graphene nano sheet to enhance the heat-conducting ability of the electrophoretic paint, and uses the silane coupling agent to chemically connect the functional additive, the metal coating has good insulating property and heat conducting property. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for high thermal conductivity insulating electrophoretic paint, with a pH of 5.4-6.2 and an electrical conductivity of 1000-2000 μS/cm.