▎ 摘　　要

NOVELTY - Embedded structure highroller thermal conductivity composite material comprises ultra-high thermal conductivity materials and porous ceramic-metal composite material. The ultra-high thermal conductivity material is diamond metal composite material, graphene metal composite material, carbon nanotube metal composite material, boron nitride metal composite material, or directional pyrolytic graphite, and the transverse or longitudinal thermal conductivity is greater than 300 W/m.K. The porous ceramic-metal composite material is composed of porous ceramic and metal, and the porous ceramic is silicon carbide, aluminum nitride, boron nitride, silicon nitride, aluminum oxide, titanium carbide, titanium diboride or boron carbide. The metal is pure copper, copper alloy, pure aluminum, aluminum alloy, pure magnesium alloy or magnesium alloy. USE - Used as embedded structure high thermal conductivity composite material. ADVANTAGE - The composite material has tested thermal conductivity of 200-1500 W/m.k, which can effectively reduce the cost of material preparation and realize the rapid preparation of high-performance thermal management materials. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation method of the high thermal conductivity composite material with embedded structure, comprising (i) molding the porous ceramic powder to obtain a blank body and sintering the blank body for heat preservation to obtain a porous ceramic; (ii) embedding ultra-high thermal conductivity materials into bi-continuous ceramics to obtain preforms; and (iii) using squeeze casting by preheating the preform in an inert atmosphere, placing into a composite mold, casting a metal solution, and pressurizing the mold; pressureless infiltration by placing the preform into a composite mold, placing a metal solution on top of the preform, and infiltrating the porous ceramic in an inert atmosphere; or pressure infiltration by placing the preform in a composite mold, and placing a metal solution on the top of the preform, vacuuming and keeping warm, and inflating and pressurizing to infiltrate the metal melt into the porous ceramic.