Self-lubricating material and preparation method thereof

The invention discloses a self-lubricating material. The self-lubricating material comprises a titanium sheet substrate, and an ionic liquid film is on the surface of the titanium sheet substrate. Anionic liquid is arranged on the surface of the titanium sheet to easily realize self-lubrication, the ionic liquid has a very low vapor pressure, is difficult to volatilize and is suitable for being applied to the outer space, common lubricating oil easily volatilizes in vacuum and cannot be kept, so the self-lubricating material fills up the application gap in the outer space and other vacuum extreme environments; and the ionic liquid is extremely viscous in a lubricating oil form, and can form Van der Waals force and hydrogen bonds together with an interface, has a close interaction and canbe remained for a long time. The invention also discloses a preparation method of the self-lubricating material. The method is simple, and can easily realize the production of the self-lubricating material, and the obtained se