Composite mechanical material for gears and preparation method of composite mechanical material

The invention belongs to the technical field of mechanical materials and particularly discloses a composite mechanical material for gears and a preparation method of the composite mechanical materials. The composite mechanical material is prepared by, by weight, 40-60 parts of polyamide matrix, 20-30 parts of reinforcing agent, 2-5 parts of polyurethane and 5-8 parts of curing agent, wherein the polyamide matrix is prepared by, by weight, 14 parts of polyamide resin, 1 part of modified epoxy resin and 0.5 part of mesoporous silica; the reinforcing agent is prepared by, by weight, 30 parts of graphite powder, 5-8 parts of glass fibers, 2 parts of molybdenum disulfide, 1 part of lanthanum acetate and 1 part of europium nitrate. The composite mechanical material has the advantages that the high temperature resistance of the composite mechanical material is increased by more than 16.5%, and the acid and alkali resistance, the tensile strength, the impact strength and the static resistance of the composite mechani