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The invention relates to a degradable synthetic polymer and natural extracellular matrix composite material, an artificial blood vessel and a preparation method thereof. Degradable synthetic polymer components during preparation can be selected from one or more materials to perform proportioning; support materials with different fiber diameters, different fiber arrangement, different apertures anddifferent pore structures can be prepared through various technologies such as electrospinning, wet spinning, melt spinning, 3D printing, pouring, phase separation and particle leaching; and naturalextracellular matrix components are wide in sources, can be selected from vascular tissues (such as the arteries and veins of pigs and cows) of different species of animal sources or the vascular tissues (such as umbilical cords) of human donors, and can flexibly adjust the components and content thereof according to needs. The composite material and the artificial blood vessel prepared by the preparation technology can have good mechanical properties, controllable space structures, appropriate degradation velocity and excellent biocompatibility and biological induction activity; and the composite material, the artificial blood vessel and the preparation method are simple in preparation technology, high in controllability, mild in condition and suitable for large-scale industrial production.

The invention discloses a method for preparing a large-scale flake-like ultra-high thermal conductivity diamond / copper composite material, relating to a method for preparing a diamond / copper composite material. The purpose is to solve the problems of low thermal conductivity and poor interfacial bonding strength of diamond / copper composites. Method: Fill the diamond particles coated with metal film into the cavity of the graphite mold to obtain the preform; the preform is placed in the crucible, and the block pure copper and copper alloy are placed on the upper part of the preform in the crucible, and placed in the air pressure In the impregnation furnace, under the protective atmosphere of argon, the microstructure and morphology of the interface layer material are controlled, the temperature is raised to melt copper, heat preservation and pressure-holding infiltration, and finally pressure-holding stepwise cooling. The diamond volume fraction in the obtained composite material member is 60%-85%, the thermal conductivity reaches 1500W / mK, the side length reaches 60-130mm, and the thickness reaches 0.2-4mm. The invention is suitable for preparing diamond / copper composite material with high thermal conductivity.