▎ 摘　　要

NOVELTY - Metal-polymer composite oil-impregnated bearing cage material, comprises mixing, pressing and sintering a metal frame and a polymer, where the metal frame has millimeter-level holes with a porosity of 50-90%, and holes are filled with a polymer with micron-level pores, and the micron-level pores are also impregnated with lubricating oil. The polymer comprises 55-80% matrix, 20-45% filler, and the matrix is polyimide, Polyetheretherketone (RTM: Colourless organic thermoplastic polymer), polyphenylene sulfide, polytetrafluoroethylene and/or nylon; and the filler is carbon fiber, graphene, nano-copper powder, nickel powder, mesoporous carbon, molybdenum disulfide, graphite and/or rare earth powder. USE - Used as metal-polymer composite oil-impregnated bearing cage material. ADVANTAGE - The material solves problem that the metal retainer has bad lubricity, heavy weight and low polymer retainer intensity, and has high-speed bearing capacity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the metal-polymer composite oil-impregnated bearing cage material, comprising (1) stirring and mixing the matrix thoroughly, add fillers, and mix again to obtain the final mixture; (2) adding mixture into the constant volume mold, laying uniformly, placing into the metal frame, and adding the certain quality of the mixture again; (3) carrying out pre-compression at a pressure of 0.1-5 MPa by the two-way pressurization method, relieving the pressure after the pressure is maintained for 5 minutes, and carrying out compression molding at 10-50 MPa, and maintaining the pressure for 5-10 minutes, and finally compressing to the preset volume, pressing for 10-15 minutes, and tightening the constant volume mold; (4) placing the constant volume mold into the sintering furnace, sintering at 320-360 degrees C and cooling to room temperature; (5) removing excess polymer material; (6) placing the cage material into lubricating oil, and performing oil immersion treatment under a vacuum of 0.1-200 Pa, at a temperature of 60-100 degrees C, and a time of 12-48 hours; and (7) scrubbing the lubricating oil adsorbed on the surface.