The Universal Selection Source: Plastics & Elastomers

High Density Polyethylene (HDPE): Techno Brief

This technology brief is all about High Density Polyethylene thermoplastic. Mentioned in this profile are HDPE strengths & limitations, applications, properties and processing guidelines.

High Density Polyethylene

High Density Polyethylene (HDPE)
High density polyethylene (HDPE) is a cost effective polyethylene thermoplastic with linear structure and no branching. It is manufactured at low temperature and pressure (10-80 bar; 70-300°C) & derived from either:

  • Modifying natural gas (a methane, ethane, propane mix) or
  • The catalytic cracking of crude oil into gasoline 

HDPE is produced from polymerization of ethylene (olefin) monomers (olefins contain a reactive double bond) majorly using two techniques: Slurry Polymerization or Gas Phase Polymerization.

High Density Polyethylene Structure
High Density Polyethylene Structure


High density polyethylene is flexible, translucent/waxy, weatherproof, and displays toughness at very low temperatures. As compared to LDPE, High Density Polyethylene exhibits following properties:

  

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