Polyethylene composition for hazardous waste storage containers

The invention discloses a polyethylene composition for hazardous waste storage containers. The polyethylene composition comprises the following components in parts by mass: 30 to 80 parts of high-density polyethylene, 10 to 30 parts of linear low-density polyethylene, 4 to 30 parts of high-pressure low-density polyethylene, 5 to 15 parts of rubber, 0.1 to 5 parts of a cross-linking agent, 0.1 to 5parts of an active additive, 0.05 to 0.3 part of a nucleating agent, 0.05 to 1.0 part of a light stabilizer, 0.05 to 0.5 part of an antioxidant and 0.02 to 0.08 part of a rheology modifier. Accordingto the invention, high-density polyethylene is used as a main body, and linear low-density polyethylene and high-pressure low-density polyethylene are used as auxiliary materials; by adding the rubber components, the polyethylene composition has excellent low-temperature impact resistance, and is suitable for preparation of the hazardous waste storage containers, especially medium-and-low-level nuclear waste storage conta