Introduction to the performance of PE bags1

Polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (minimum operating temperature can reach -70 ~ -100 ℃), good chemical stability, and can resist the erosion of most acids and alkalis (not resistant to oxidation properties). acid), insoluble in general solvents at room temperature, low water absorption, and excellent electrical insulation performance; but 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. Different production methods can be used to obtain products with different densities (0.91-0.96g/cm3). Polyethylene can be processed by the usual thermoplastic molding methods (see Plastics Processing).