Polyethylene

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What is Polyethylene

Polyethylene, abbreviated as PE, is a thermoplastic resin produced by the polymerization of ethylene. In industry, also includes ethylene and a small amount of α-olefin copolymer. Polyethylene odorless, non-toxic, feel like wax, has excellent low-temperature resistance (the lowest temperature up to -70 ~ -100 ℃), good chemical stability, can resist most of the acids and alkalis (not resistant to oxidizing properties of the acid), insoluble in general solvents at room temperature, small water absorption, excellent electrical insulation properties.

Types of Polyethylene

(1) LDPE: low density polyethylene (also known as high-pressure polyethylene)
(2) LLDPE: Linear Low Density Polyethylene
(3) MDPE: medium-density polyethylene
(4) HDPE: high-density polyethylene (also known as low-pressure polyethylene)
(5) UHMWPE: Ultra High Molecular Weight Polyethylene
(6) Modified polyethylene: chlorinated polyethylene (CPE), cross-linked polyethylene (PEX)
(7) Ethylene copolymers: ethylene-propylene copolymers (plastics), EVA, ethylene-butene copolymers, copolymers of ethylene-other olefins (e.g., octene POE, cycloalkenes), ethylene-unsaturated ester copolymers (EAA, EMAA, EEA, EMA, EMMA, EMAH). Polyethylene with a molecular weight of 3-6 million is called ultra-high molecular weight polyethylene (UHMWPE). UHMWPE is so strong that it can be used to make bulletproof vests.