▎ 摘　　要

NOVELTY - Composite material cross-linked by gamma ray irradiation comprises 80-100 pts. wt. HDPE resin, 20- 40 pts. wt. graphene oxide modified polylactic acid, 3- 8 pts. wt. radiation sensitizer, 0.5-1 pts. wt. antioxidant. USE - Composite material cross-linked by gamma ray irradiation in plastic film (claimed). ADVANTAGE - The composite material cross-linked by gamma ray irradiation improves the mechanical property of the composite material, effectively improves the HDPE resin material aging resistance, low hardness and bad environmental stress crack resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the method for preparing composite material using gamma ray irradiation crosslinking, which involves: 1. drying and mixing the HDPE resin and graphene oxide modified polylactic acid respectively; 2. adding radiation sensitizer and antioxidant stirring uniformly to obtain the mixed material; 3. extruding and granulating the mixed material by a double-screw extruder; 4. drying the obtained particles at room temperature, vacuum packaging, using cobalt 60 -ray source to perform irradiation treatment at normal temperature to obtain the composite material.