The invention relates to a high-thermal-
conductivity insulating cooling fin for a
new energy battery and a preparation method thereof.The high-thermal-
conductivity insulating cooling fin comprises a heat conduction layer and a heat conduction insulating layer connected with the heat conduction layer, the heat conduction layer is a
graphene heat
conduction cooling film, the heat conduction insulating layer is formed by
coating an insulating heat conduction
coating, and the
graphene heat
conduction cooling film is prepared from, by weight, 4, 4, 5, 6-tetramethyl-3, 5-pentanediol monoisobutyrate, the
graphene composite material is prepared from the following components in parts by weight: 35 to 45 parts of 4, 4 '-oxydiphthalic anhydride, 32 to 43 parts of 4, 4'-
diaminodiphenyl ether, 120 to 130 parts of N-methyl-2-pyrrolidone, 5 to 8 parts of
hexagonal boron nitride, 20 to 30 parts of graphene and 1 to 2 parts of
coupling agent. The insulating heat-conducting
coating is prepared from the following raw materials in parts by weight: 20-30 parts of an insulating heat-conducting agent, 1-1.5 parts of an
ethylene-
ethyl acrylate copolymer and 30-40 parts of a
diluent; the insulating heat-conducting agent is prepared from methyl phenyl
silicone oil and insulating heat-conducting filler. The cooling fin has the advantages of being good in insulation performance and heat dissipation effect.