Composite Material of Multilayer Metal Sandwiching Graphene or Graphene Composite and Manufacturing Method of the Same

A composite material of multilayer metal sandwiching graphene or graphene composite, comprising:

• a metallic core base having a circular cross-section;
• at least one metallic filler part is formed with graphene or a graphene composite formed on its inner surface;
• The filler part wraps the core base axially inward from the both lateral ends to form an annular covering layer, and the both ends are joined and tightly bonded to construct a structure, therefore the graphene or graphene composite are fixedly sandwiched between the outer surface of the core base and the inner surface of the filler part;
• the filler part can be multilayered to form a circular elongated structure.

A manufacturing method of composite material of multilayer metal sandwiching graphene or graphene composite, the manufacturing steps are as follows:

• step (1):
• using a circular linear core base as an axis, the outer surface of the core base in annularly covered with a first layer filler part, the inner surface of the first layer filler part is formed with graphene or a graphene composite;
• such that the outer surface of the core base and
• the inner surface of the first layer filler part jointly sandwich the graphene or a graphene composite;
• after the core base is annularly covered, the two side ends of the first layer filler part are connected by welding;
• step (2):
• axially passing the core base and the first layer filler part through a die device, and subject them to compression and stretch processing to a predetermined outer diameter, thereby completing the first composite material product;
• step (3):
• annularly covering the first composite material product with a second layer filler part, the inner surface of the second layer filler part is formed with graphene or a graphene composite;
• such that the outer surface of the first composite material product and the inner surface of the second layer filler part jointly sandwich the graphene or a graphene composite;
• after the first composite material product is annularly covered, connecting the two side ends of the second layer filler part by welding;
• step (4):
• repeat step (2) to axially passing the first composite material product and the second layer filler part through the die mold device, and subject them to compression and stretch processing to a predetermined outer diameter, thereby completing the second composite material product;
• repeat the above step (3) and step (4) continuously until a preset number layer of filler part is reached, and the multiple layer filler parts respectively sandwich with graphene or a graphene composite;
• complete the annular coating, welding, compressing and stretching process by layer until the same or different electrical or physical properties are obtained for application.