Polyethylene (PE for short) is a thermoplastic resin produced by the polymerization reaction of ethylene monomer. In industry, it also includes copolymers of ethylene and a small amount of α-olefins. Polyethylene is odorless, non-toxic, feels like wax, and has excellent low-temperature resistance (the lowest operating temperature can reach -100~-70°C). It has good chemical stability because the polymer molecules are connected through carbon-carbon single bonds and can resist the erosion of most acids and alkalis (not resistant to acids with oxidizing properties). Insoluble in common solvents at room temperature, has low water absorption and excellent electrical insulation properties.
High-pressure polyethylene: more than half is used in film products, followed by pipes, injection molded products, wire wrapping, etc.
Medium and low pressure polyethylene: mainly injection molded products and hollow products.
Ultra-high-pressure polyethylene: Due to its excellent comprehensive properties, ultra-high molecular polyethylene can be used as an engineering plastic.