HDPE (High Density Polyethylene, mentioned as “HDPE”) is additionally called the low-pressure Polyethylene, maybe a quite High crystallinity, nonpolar surfaces appear a particular degree of translucent. PE has excellent resistance to most domestic and industrial chemicals.
HDPE may be a quite high crystallinity, non – polar thermoplastic. High-density polyethylene (hdpe) may be a quite white powder granular product, non-toxic, tasteless, with a density of 0.940~0.976 g/cm3. Crystallinity is 80% ~ 90%, softening point is 125 ~ 135 ℃, using temperature is 100 ℃; Melting temperature of 120 ~ 160 ℃, for larger molecular materials, suggested that melting temperature range between 200 ~ 250 ℃.
HDPE has good heat and cold resistance, good chemical stability, high rigidity and toughness, good mechanical strength. Dielectric properties, environmental stress cracking resistance is additionally good. Hardness, lastingness, and creep are better than low-density polyethylene. Wear resistance, electrical insulation, toughness and cold resistance are better but slightly worse than low-density insulation; Good chemical stability, insoluble in an organic solvent at temperature, immune to acid, alkali and everyone sort of salt corrosion; wholesale textured geomembrane has low permeability and water absorption to water vapor and air. Poor aging resistance, environmental cracking resistance isn’t nearly as good as low-density polyethylene, especially thermal oxidation will make its performance decline, so, resin got to add antioxidants and ultraviolet absorbent to enhance this lack. the warmth deformation temperature of hdpe film under stress is low.