PEEK-based composite material with low wear and high comprehensive performance and preparation method thereof

The invention relates to a PEEK-based composite material with low wear and high comprehensive performance and a preparation method thereof. The PEEK-based composite material comprises the following raw materials in parts by weight: 50-80 parts of PEEK, 3-10 parts of PTFE, 3-20 parts of a modified lubricant and 10-40 parts of PBI, the modified lubricant is of a shell-core structure, the core is an intercalation compound of a lubricant of a lamellar structure and a lubricant of a granular structure, and the shell layer is a coupling coating; the lubricant with the lamellar structure is tungsten disulfide, and the particle size is 1-15 microns; the lubricant with the granular structure is a mixture of phosphate and stannous sulfide, and the particle size is 500 nm to 5 [mu] m; the phosphate comprises one or more of calcium phosphate, magnesium phosphate and zinc phosphate; the mass ratio of the tungsten disulfide to the stannous sulfide to the phosphate is 4: 1: (0.4-0.8). The PEEK-based composite material discl