Polyethylene (PE) is a thermoplastic made by polymerization of ethylene. Depending on the length of molecular chain or molecular weight, there are various grade of polyethylene in the market, such as LLDPE, LDPE, HDPE, MDPE, HMWPE, UHMW-PE. In general a higher molecular weight polyethylene will have a higher wear abrasion resistant properties.
Polyethylene have high impact strength and elongation, it is a inert material with excellent chemical resistance to strong acid and alkaline. It is also resistant to mild oxidants and reducing agents.
Its properties can be modified by compound with selected additive, such as glass Bead filled for better wear or boron filled for radiation shield.