High Density Polyethylene Definition

- Jan 27, 2020-

High Density Polyethylene definition

High density polyethylene (HDPE) is a white powder or granular product. Non-toxic, tasteless, crystallinity is 80% ~ 90%, softening point is 125 ~ l 35 ℃, working temperature can reach 100 ℃; hardness, tensile strength and creep are better than low density polyethylene; Good electrical insulation, toughness and cold resistance; good chemical stability, insoluble in any organic solvents at room temperature, resistant to corrosion by acids, alkalis and various salts; thin films have low permeability to water vapor and air, and absorb water Low resistance; aging resistance is poor, environmental stress cracking resistance is not as good as low-density polyethylene, especially thermal oxidation will reduce its performance, so the resin must be added antioxidants and ultraviolet absorbers to improve this deficiency. High-density polyethylene film has a lower thermal deformation temperature under stress, so pay attention to it during application.