Polyethylene, abbreviated as PE, is a thermoplastic resin made from ethylene through polymerization.
Polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (the minimum use temperature can reach - 70~- 100 ℃), good chemical stability, can withstand the corrosion of most acids and alkalis (not resistant to acids with oxidizing properties), insoluble in general solvents at room temperature, low water absorption, and excellent electrical insulation performance; However, polyethylene is very sensitive to environmental stress (chemical and mechanical effects) and has poor heat aging resistance.
The properties of polyethylene vary from variety to variety, mainly depending on the molecular structure and density.
Specific gravity: 0.94-0.96g/cm3.
Molding shrinkage: 1.5-3.6%