Polyethylene is the most simple polymer, is the most widely used polymer materials.
It is made by repeating the -CH2-unit. Polyethylene is formed by addition polymerization of ethylene (CH2 = CH2).Polyethylene odorless, non-toxic, feel like wax, with excellent low temperature performance (minimum temperature up to -70 ~ -100 ℃), good chemical stability, the ability of most of the acid-base erosion (intolerant with oxidative properties Of the acid), at room temperature is not soluble in the general solvent, water absorption, electrical insulation performance；but polyethylene is very sensitive to environmental stress (chemical and mechanical), and has poor heat aging resistance.