Polyether sulfone resin and preparation method thereof

The invention relates to the field of compositions of high-molecular compounds, and particularly discloses polyethersulfone resin and a preparation method thereof. The polyethersulfone resin is prepared from the following raw materials in parts by weight: 70-100 parts of polyethersulfone, 2.8-6 parts of filler, 1-4 parts of toughening fiber, 1-2 parts of compatilizer and 0.5-1 part of dispersing agent, the toughening fiber is prepared from a fiber material, calcium oxide and glycerol ester of rosin in a weight ratio of 10: (0.5-1): (1-2); the preparation method comprises the following steps: S1, drying the polyethersulfone, the compatilizer and the zinc stearate, and uniformly mixing and stirring to obtain a primary mixture for later use; s2, adding a filler and toughening fibers into the primary mixture, and uniformly mixing to obtain a mixture; s3, extruding, granulating and cooling the mixture to obtain a finished product, when extrusion-molded polyethersulfone resin is prepared in spring and summer in sou