Polyethylene (PE) is a thermoplastic resin obtained by polymerizing ethylene. Industrially, copolymers of ethylene and a small amount of an α-olefin are also included. Polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (minimum use temperature can reach -100~-70 °C), good chemical stability, and can resist most acid and alkali corrosion (not resistant to oxidation) Nature of acid). It is insoluble in common solvents at room temperature, has low water absorption and excellent electrical insulation.
Polyethylene materials are difficult to print (unless bulk modified or surface modified), so they are mostly colorless or light-colored products, and of course, due to their good environmental aging resistance, artificial turf on the sports field is mostly made of polyethylene. The simplest method of identification is to ignite a small sample with a gas flame (such as a lighter). The sample will continue to burn, have smoke, and have the taste of burning a candle. Use a nail to scratch it, scratched low density polyethylene (LDPE), otherwise high density polyethylene (HDPE).
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