▎ 摘　　要

NOVELTY - Graphite fiber-aluminum silicon carbide composite material comprises 11-13 pts. wt. graphite fiber, 75-78 pts. wt. silicon carbide, 95-100 pts. wt. 6061 aluminum alloy, 0.4-0.6 pts. wt. alumina, 4-4.3 pts. wt. phosphoric acid, 13-14 pts. wt. pore-forming agent, 2-2.5 pts. wt. polyvinylpyrrolidone (PVP), dichloromethane (suitable amount), dimethylformamide (suitable amount), 1.3-1.5 pts. wt. nano lanthanum borate, 2-2.2 pts. wt. micro-grade microcrystalline ceramic powder, 1.2-1.4 pts. wt. graphene microchip, 0.7-0.9 pts. wt. nano-copper powder and 43-45 pts. wt. ethanol. USE - The graphite fiber-aluminum silicon carbide composite material is useful in thermally stable electronic packaging (claimed). ADVANTAGE - The graphite fiber-aluminum silicon carbide composite material has improved heat dissipation, thermal stability, abrasion resistance and corrosion resistance, and reduced thermal expansion coefficient. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation of the graphite fiber-aluminum silicon carbide composite material, comprising (i) adding PVP into mixed solvent of dichloromethane and dimethylformamide in a volume ratio 2:8 to obtain 12-13 wt.% solution, adding nano lanthanum borate, stirring magnetically at room temperature for 12-13 hours, then transferring to an electrostatic spinning apparatus, where the solution flow rate is set to 0.2 ml/hour, the driving voltage is 15kV, and distance between spinneret and collection device is 20cm, then adding mixture of ethanol and graphite fibers to the collection device, stirring the material in the collection device while spinning, drying the obtained product to remove ethanol, calcining at 350-400 degrees C for 24-28 minutes, and pulverizing to obtain modified graphite fibers, (ii) mixing micro-grade microcrystalline ceramic powder, graphene microchip and nano-copper powder uniformly and grinding, mixing obtained product with modified graphite fibers, silicon carbide, alumina, phosphoric acid and pore-forming agent uniformly, and compression molding under 180-200 MPa pressure to obtain a preform, and (iii) heating 6061 aluminum alloy to 780-800 degrees C to melt, casting on the preform under vacuum, impregnating for 18-20 minutes under 8-9 MPa pressure, then cooling, and trimming to obtain final product.