Method for preparing ultra high molecular weight polyethylene composite materials

A method for preparing an ultra high molecular weight polyethylene composite material comprising:

• providing a substrate material having a medical grade ultra high molecular weight polyethylene powder and drying the substrate material to obtain a dried powder;
• performing a pre-pressing treatment by adding the dried powder into a mold in a plate vulcanizing machine and placing in an insulation box at a temperature of approximately 150 to 200° C. for 2 to 3 hours to obtain a molded powder;
• pressing the molded powder in the plate vulcanizing machine to obtain an ultra high molecular weight polyethylene board and cooling thereof to room temperature;
• preparing a graphene oxide solution by addition of graphene oxide to an absolute ethanol, wherein the solution comprises graphene oxide at a mass concentration of approximately 0.5 to 1.0%;
• immersing the ultra high molecular weight polyethylene board into the graphene oxide solution in a container and sealing the container;
• subjecting the container having the ultra high molecular weight polyethylene board immersed into the graphene oxide solution to ultrasonic induction by an ultrasonic processor for 4 to 12 hours at a constant temperature such that the graphene oxide solution infiltrates into the substrate material to obtain an ultra high molecular weight polyethylene composite material;
• washing the ultra high molecular weight polyethylene composite material with deionized water for several times, and drying thereof by a blower.