▎ 摘　　要

NOVELTY - Manufacture of efficient heat dissipation material involves mixing 0.5-30 wt.% graphite, 0.3-15 wt.% graphene oxide, 0.5-20 wt.% carbon nanotubes, 1-30 wt.% carbon fiber, 1-20 wt.% silicon carbide, 1-20 wt.% boron nitride, 1-25 wt.% carbon nitride, 4-40 wt.% binder and 50-90 wt.% aluminum, milling at 200-300 rpm for 15-30 minutes, obtaining mixed powder, compression-molding resultant product at 25-420 degrees C and 100-200 MPa, drying in nitrogen or argon atmosphere, heating to 300 degrees C at 10 degrees C/minute and then to 300-650 degrees C at 3 degrees C/minute, degassing for 2-4 hours, and sintering. USE - Manufacture of efficient heat dissipation material used for solar inverter. ADVANTAGE - The method enables manufacture of efficient heat dissipation material using graphite having high thermal conductivity of 500-3000 W/m.K. DETAILED DESCRIPTION - Manufacture of efficient heat dissipation material involves mixing 0.5-30 wt.% graphite, 0.3-15 wt.% graphene oxide, 0.5-20 wt.% carbon nanotubes, 1-30 wt.% carbon fiber, 1-20 wt.% silicon carbide, 1-20 wt.% boron nitride, 1-25 wt.% carbon nitride, 4-40 wt.% binder and 50-90 wt.% aluminum, milling at 200-300 rpm for 15-30 minutes, obtaining mixed powder, compression-molding resultant product at 25-420 degrees C and 100-200 MPa, drying in nitrogen or argon atmosphere, heating to 300 degrees C at 10 degrees C/minute and then to 300-650 degrees C at 3 degrees C/minute, degassing for 2-4 hours, and sintering at 560-650 degrees C. The graphite is graphite powder having a purity of 99% and an average particle diameter of 50 mu m. The carbon nanotubes are multi-walled carbon nanotubes having diameter of 20 nm and length of 10 mu m. The silicon carbide is silicon carbide powder having purity of 99% and average particle diameter of 10 mu m. The carbon nitride is carbon nitride powder having purity of 99% and average particle diameter of 20 mu m or less. The boron nitride is boron nitride powder having particle size of 10 mu m or less. The aluminum is aluminum powder having an average particle size of 50 mu m and purity of 99.9%. The graphene oxide is obtained by mixing 2-5 wt.% graphite powder, 80-90 wt.% sulfuric acid and 8-15 wt.% potassium permanganate, stirring for 1.5-3.5 hours, obtaining a mixture (m1), mixing 35-40 wt.% mixture (m1) and 60-65 wt.% distilled water, obtaining a mixture (m2), mixing 30-36 wt.% mixture (m2), 60-69.5 wt.% distilled water and 0.5-4 wt.% aqueous hydrogen peroxide solution, obtaining a mixture (m3), centrifuging the mixture (m3) to remove metal ions by adding an aqueous hydrochloric acid solution, washing with distilled water until neutral, and then drying in an oven for 2-3 days.