▎ 摘　　要

NOVELTY - A preparation method for cylinder sleeve of copper base composite material comprises (A) preparing mixed material, (B) pressing mixed material under 750 MPa to obtain blank, (C) secondary sintering blank, and (D) performing heat treatment to obtain desired composite material. The step (A) comprises providing 15 pts. wt. plated copper carbon nanotube, 15 pts. wt. graphene, and 30 pts. wt. carbon fiber, 2.5 pts. wt. nickel powder, 10 pts. wt. iron powder, and 210 pts. wt. copper powder, adding 5 pts. wt. lubricant, ball milling and mixing for 8 hours, and obtaining mixed material. USE - Preparation method for cylinder sleeve of copper base composite material. ADVANTAGE - The prepared composite material has low thermal expansion coefficient, good heat conductivity, high-temperature strength and good wear resistance. DETAILED DESCRIPTION - Preparation method for cylinder sleeve of copper base composite material comprises (A) preparing mixed material, (B) pressing mixed material under 750 MPa to obtain blank, (C) secondary sintering blank, and (D) performing heat treatment to obtain desired composite material. The step (A) comprises providing 15 pts. wt. plated copper carbon nanotube, 15 pts. wt. graphene, and 30 pts. wt. carbon fiber, 2.5 pts. wt. nickel powder, 10 pts. wt. iron powder, and 210 pts. wt. copper powder, adding 5 pts. wt. lubricant, ball milling and mixing for 8 hours, and obtaining mixed material. The nickel powder has granularity of 150-200 meshes. The Fe powder has granularity of 250-300 meshes. The copper powder has granularity of 150-200 meshes. The step (C) comprises heating furnace to 1250 degrees C for 3 hours, sintering, filling argon gas, and obtaining alloy block after sintering.