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