The feature of the Hdpe material

HDPE has good heat and cold resistance, good chemical stability, high rigidity and toughness and good mechanical strength. Dielectric properties and environmental stress cracking resistance are also good. Hardness, tensile strength and creep are better than those of low density polyethylene; Wear resistance, electrical insulation, toughness and cold resistance are good, but slightly worse than low-density insulation; Good chemical stability, insoluble in any organic solvent at room temperature, resistant to acid, alkali and various salts; The film has low permeability to water vapor and air and low water absorption; The aging resistance is poor and the environmental cracking resistance is not as good as that of low-density polyethylene, especially the thermal oxidation will reduce its performance. Therefore, the resin needs to add antioxidant and ultraviolet absorber to improve this deficiency. The thermal deformation temperature of HDPE film under stress is low, which should be paid attention to in application