High density polyethylene (HDPE), white powder or granular products. Non-toxic, tasteless, crystallinity was 80% ~ 90%, softening point is 125 ~ 135 ℃, the temperature can reach 100 ℃; Hardness, tensile strength and creep is better than that of low density polyethylene; Wear resistance, electrical insulation, good toughness and the cold resistance; Good chemical stability, at room temperature, does not dissolve in any organic solvent, acid, alkali and corrosion of various salts; Small thin film on the permeability of water vapor and air, water imbibition low; Aging resistance, environmental stress cracking resistance is better than low density polyethylene, especially hot oxidation will make its performance degradation, so the resin must add antioxidant and uv absorber, etc to improve the deficiency of. High density polyethylene film under the condition of mechanical thermal deformation temperature is low, must pay attention to the application.
