Product Details
Polyethylene (PE) ranks among the world’s most mass-produced polymers, finding broad applications across a wide range of industries. Low-density polyethylene (LDPE) is widely adopted for flexible items like packaging films and protective coatings. In contrast, high-density polyethylene (HDPE) is ideal for rigid articles, such as bottles, storage containers, and fibers for fishing nets and ropes. Ultra-high-molecular-weight polyethylene (UHMWPE) boasts outstanding resistance to environmental stress cracking, minimal water absorption, great fatigue resistance and superior impact toughness. Thanks to these characteristics, it is an excellent choice for wear-resistant and shock-resistant parts for textile machinery, including rubber connectors, gears and gaskets.
Chemical Properties
| English Name | Polyethylene |
| English Synonyms | pad522;pe512;pe617;pen100;pep211;pes100;pes200;petrothene |
| CAS Number | 9002-88-4 |
| Molecular Formula | (C2H4) n |
| Molecular Weight | 28.05316 |
| EINECS Number | 618-339-3 |
| Melting point | 92 °C |
| Boiling point | 48-110 °C (Press: 9 Torr) |
| Density | 0.962 g/mL at 25 °C |
| Refractive index | 1.51 |
| Flash point | 270℃ |
| Storage conditions | -20℃ |
| Form | Powder |
| Color | White |
| Specific gravity | 0.95 |
| Biological origin | rabbit |
| Water solubility | Soluble in acetone and benzene. Insoluble in water. |
| Merck value | 147,567 |
| Dielectric constant | 2.2 (Ambient) |
| Stability | Stable, but slowly decomposes under UV light or sunlight. Incompatible with halogens, strong oxidizers, benzene, petroleum ether, aromatic hydrocarbons and chlorinated hydrocarbons, and lubricating oils. |
| Surface tension | 35.7 mN/m at 20°C |
Product Application
Polyethylene is a thermoplastic resin obtained via addition polymerization of ethylene. Its molecular structure consists solely of carbon and hydrogen. It is non-toxic, features excellent low-temperature performance (with a minimum service temperature down to -100°C) and favorable chemical stability. It can be fabricated into films, wire and cable jackets, pipes, hollow containers, injection-molded parts, fibers and more, so it is widely applied in agriculture, packaging, automotive and other industries.
