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乐动体育投注app_乐动体育西班牙人_LD乐动体育官网

HDPE (乐动体育投注app_乐动体育西班牙人_LD乐动体育官网, referred to as "HDPE") is also called the low pressure Polyethylene, is a kind of High crystallinity, nonpolar surfaces appear a certain degree of translucent. PE has excellent resistance to most domestic and industrial chemicals.

HDPE is a kind of high crystallinity, non - polar thermoplastic resin. High-density polyethylene (hdpe) is a kind of 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 ℃. It has good heat and cold resistance, good chemical stability, high rigidity and toughness, good mechanical strength. Dielectric properties, environmental stress cracking resistance is also good. Hardness, tensile strength 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 any organic solvent at room temperature, resistant to acid, alkali and all kinds of salt corrosion; The film has low permeability to water vapor and air and low water absorption. Poor aging resistance, environmental cracking resistance is not as good as low density polyethylene, especially thermal oxidation will make its performance decline, so, the resin needs to add antioxidants and ultraviolet absorbent to improve this lack. The thermal deformation temperature of hdpe film under stress is low.