High-thermal conductivity composite material, preparation method and application thereof

A method of preparing a thermally-conductive composite material, comprising:

• subjecting an as-cast aluminum nitride particle-reinforced zinc-aluminum alloy (AlN-ZA) composite material to reciprocating extrusion to produce the thermally-conductive composite material;
• wherein the thermally-conductive composite material is AlN-ZA composite material comprising a zinc-aluminum alloy and 2%, 4%, 6%, or 8% by volume of AlN ceramic particles;
• and
• the zinc-aluminum alloy comprises 70.52-71.08% by weight of Zn, 25.58˜27.65% by weight of Al, 1.27˜3.45% by weight of Cu, and 0.50% or less by weight of Mg.