High-melt-strength polyamide particle with high crosslinking degree and preparation method and application thereof

The invention relates to the technical field of high polymer materials, in particular to high-melt-strength polyamide particles with high crosslinking degree and a preparation method and application thereof. The specific preparation method comprises the following steps: premixing a certain amount of polyamide resin and a first additive to serve as a first component, and feeding the first component through a main feeding opening of a parallel double-screw extruder; premixing a certain amount of thermoplastic resin and a second additive in proportion to serve as a second component, and feeding the second component through a side feeding port of the parallel double-screw extruder, wherein the first additive comprises a cross-linking agent, and the second additive comprises a compatilizer; and mixing the first component and the second component through the double-screw extruder, and then enabling the first component and the second component to enter a serial single-screw extruder to be extruded, cooled, drawn and