Creep-resistant and cutting-resistant high-performance polyethylene fiber as well as preparation and application thereof

The invention relates to a creep-resistant and cutting-resistant high-performance polyethylene fiber as well as preparation and application thereof. A polyethylene resin raw material prepared from a single active center catalyst is mixed with an ultraviolet photosensitizer, a cross-linking agent, an antioxidant and a flow modifier, and a polyethylene undrawn precursor is extruded at high temperature by a screw extruder; the preparation method comprises the following steps: directly carrying out high-power stretching on unstretched polyethylene protofilaments under a heat preservation condition, continuously carrying out high-temperature multi-time hot stretching and rolling to obtain polyethylene fibers, and finally carrying out ultraviolet radiation on the polyethylene fibers to obtain the creep-resistant, cutting-resistant and high-performance polyethylene fibers. Compared with the prior art, the preparation method has the advantages that a lower-level cross-linked structure is generated through control, an