▎ 摘　　要

NOVELTY - A high hardness polyethylene composition comprises 30-60 wt.% polyethylene, 20-40 wt.% calcium carbonate, 10-15 wt.% graphene, 3-6 wt.% tributyltin trichloride, 2-4 wt.% ethylene propylene diene monomer rubber, and 1-3 wt.% additive. USE - High hardness polyethylene composition (claimed). ADVANTAGE - The high hardness polyethylene composition has strong hardness, excellent tensile strength, high temperature resistance, flame-retardant, impact resistance, wear resistance, ring rigidity, comprehensive performance, and stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation method of high hardness polyethylene composition, which involves taking raw materials, pouring into a mixing container, uniformly stirring for 15-20 minutes, taking out, adding to granulator, and granulating.