Method for preparing high-toughness strontium ferrite/PPS (polyphenylene sulfite) injection molding granules through in-situ polymerization

The invention discloses a method for preparing high-toughness PPS (polyphenylene sulfite)-based strontium ferrite injection molding granules. The method comprises the following steps of: step one. synthesizing a toughening agent by a hydrothermal method, adhering strontium ferrite to the surface of the toughening agent in an in-situ polymerization mode, centrifuging, washing and drying to obtain atoughening master batch; and step two. mixing the toughening master batch obtained in the step one with strontium ferrite magnetic powder and a polymer adhesive, and carrying out extrusion granulation through a twin-screw extruder. According to the method, a precursor for synthesizing the toughening agent and the magnetic powder are mixed in a solvent in advance, the toughening master batch is obtained through in-situ polymerization, and then the toughening master batch, the residual magnetic powder and the polymer adhesive are mixed, extruded and granulated, so that the problems of non-uniform distribution of the ma