HDPE

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HDPE is a polyethylene thermoplastic made from petroleum. It is known for its large strength to density ratio. The density of high-density polyethylene can range from 0.93 to 0.97 g/cm3. Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength than LDPE. The difference in strength exceeds the difference in density, giving HDPE a higher specific strength. It is also harder and more opaque and can withstand somewhat higher temperatures (120 °C/ 248 °F for short periods, 110 °C /230 °F continuously). High-density polyethylene, unlike polypropylene, cannot withstand normally required autoclaving conditions. The lack of branching is ensured by an appropriate choice of catalyst.

HDPE is resistant to many different solvents and has a wide variety of applications, including:

  • Swimming Pool installation.
  • 3-D printer filament
  • Arena Board (puck board)
  • Backpacking frames
  • Ballistic plates
  • Banners
  • Bottle caps
  • Chemical resistant piping systems
  • Coax cable inner insulator
  • Food storage containers
  • Fuel tanks for vehicles
  • Corrosion protection for steel pipelines
  • Electrical and plumbing boxes
  • Far-IR lenses
  • Folding chairs and tables

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