Polyethylene composition with excellent pressure and scratch resistance and high elasticity polyethylene folded pipe for repair of non-excavated pipes using the same

摘要

The present invention relates to a polyethylene composition having excellent pressure and scratch resistance, and a high elasticity polyethylene folded pipe for repairing non-excavated pipes using the same, and more particularly, to increase the pressure resistance of the pipe by maximizing the rigidity and elasticity of the material through a rigid nucleating agent. The present invention relates to a polyethylene composition having excellent pressure and scratch resistance for facilitating the use of water, and a high elasticity polyethylene folded pipe for repairing non-excavated pipes using the same. This invention is based on 100 parts by weight of polyethylene (PE), It includes a nucleating agent including a metal salt-based nucleating agent that maximizes stiffness using a rigid nucleating agent and induces β crystals, and includes a primary acid control agent selected from the group consisting of phenolic antioxidants or phosphate-based antioxidants, and mixtures thereof, , A secondary acid control agent using the phosphorus-based antioxidant, and 0.02 parts by weight of an external lubricant as a dispersant, and 0.2 to 0.8 parts by weight of an internal lubricant as a dispersant; The nucleating agent is made of 0.23 to 0.8 parts by weight based on 100 parts by weight of polyethylene, and includes using a rigid nucleating agent including a metal salt-based nucleating agent that maximizes the stiffness of the material through a rigid nucleating agent and induces β crystals, The primary acid control agent and the secondary acid control agent are each containing 0.05 to 0.5 parts by weight based on 100 parts by weight of polyethylene, and the primary acid control agent prevents oxidation of the folded pipe for repair of non-excavated pipes, and secures long-term durability. In order to do so, it is selected from the group consisting of phenolic antioxidants or phosphate-based antioxidants, and mixtures thereof, and the secondary acid control agent is characterized by using a phosphorus-based antioxidant.