Polyethylene PP Sheets for Water Storage Tanks Support Customization

Below is an introduction to polyethylene:

Definition and Structure

Polyethylene (PE) is a high molecular compound polymerized from ethylene monomers. Its molecular chain is primarily composed of carbon and hydrogen atoms, connected by repeating —CH?—CH?— units. Depending on the polymerization method and conditions, it can exhibit linear or branched structures.

Classification

? Low-Density Polyethylene (LDPE): Generally polymerized under high temperature and high pressure, it has numerous short branches with a density of 0.910-0.925 g/cm3. It offers good transparency, flexibility, low-temperature resistance, and breathability, commonly used in films, pipes, and other applications.

? High-Density Polyethylene (HDPE): Produced through low-pressure polymerization processes, its molecular chains are tightly arranged with few branches, and its density ranges from 0.941 to 0.965 g/cm3. It exhibits high rigidity, hardness, mechanical strength, and chemical corrosion resistance, widely used in pipes, injection-molded products, and more.

? Linear Low-Density Polyethylene (LLDPE): Formed by copolymerizing ethylene with a small amount of α-olefins under catalyst action, it combines some properties of both LDPE and HDPE. Its linear structure provides better tensile strength, tear resistance, and other properties, primarily used in film production.