High-density polyethylene material plastic pallet
HDPE is a high degree of crystallinity, non-polar thermoplastic resin.
High density polyethylene is a white powder granular products, non-toxic, tasteless, the density of 0.940 ~ 0.976 g / cm3 range; crystallinity of 80% to 90%, softening point of 125 ~ 135 ℃, the use of temperature up to 100 ℃; melting temperature of 120 ~ 160 ℃, for the larger molecules, the proposed melting temperature range of 200 ~ 250 ℃ between. It has good heat resistance and cold resistance, chemical stability, but also has a high rigidity and toughness, good mechanical strength. Dielectric properties, resistance to environmental stress cracking is also better.
Hardness, tensile strength and creep are better than low density polyethylene; abrasion resistance, electrical insulation, toughness and cold resistance are better, but with the low density insulation slightly worse; chemical stability, at room temperature Conditions, do not dissolve in any organic solvents, acid, alkali and various salts of corrosion; film on the water vapor and air permeability, low water absorption; poor aging resistance, resistance to environmental cracking than low-density polyethylene, In particular, the thermal oxidation of the performance will be reduced, so the resin need to add antioxidants and UV absorbers to improve the improvement of this problem.
High-density polyethylene film in the case of stress under the heat distortion temperature is low, this point should pay attention to the application.