Disclosed is a high-temperature yellowing-resistant rotational molding polyethylene and a preparation method thereof. In parts by weight, the raw material components comprise linear low-density polyethylene, acid absorbent, lubricant, primary antioxidant, auxiliary antioxidant A, auxiliary antioxidant B and light stabilizer. The preparation method comprises modification pelletization and material pulverization. Modification pelletization comprises: mixing linear low-density polyethylene, acid absorbent, lubricant, primary antioxidant, auxiliary antioxidant and light stabilizer; feeding into a high-speed mixer for mixing; then feeding into a twin-screw extruder to prepare rotational molding polyethylene pellets. Material pulverization comprises: uniformly feeding the prepared rotational molding polyethylene pellets into a rotational molding plastic pulverizer to obtain the rotational molding polyethylene under the protection of nitrogen. The present invention has the technical characteristics of improving the environmental stress cracking resistance and service life of rotational molding products, along with simple preparation method, no need for special equipment and easy industrial operation.
Country Code: CN
Application Number: CN202410195336.1
