The main plastic of plastic products
Polyethylene plastics (Polyethylene) are polymers of ethylene monomers. The raw material for production is oil, coke oven gas or alcohol. Industrial production of polyethylene usually by ethanol dehydration, acetylene catalytic hydrogenation or high temperature cracking. Its commodity name is abbreviated as "B plastic"; the English abbreviation is "PE". Because the density of polyethylene is different, it is divided into low-density polyethylene.[PE (L)], medium density polyethylene [PE (M)] and high density polyethylene [PE (H)].The molecular formula of polyethylene is: (- CH2, CH2 -) n. It is linear in geometry and theoretically has no branched chain and is prone to crystallization. Usually the polyethylene molecule is composed of crystalline and amorphous state in high elastic interlaced region; crystalline polyethylene plastic gives high hardness, strength, chemical stability; amorphous region with polyethylene plastic higher flexibility, toughness, transparency etc.. In fact, polyethylene macromolecules are not absolutely free of branched chains. Its crystallinity is different, density is different, physical and mechanical properties are also different.
