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Fender polyethylene PE Editor told you The characteristics of polyethylene material

　　Polyethylene (polyethylene, PE for short) is a kind of thermoplastic by polymerization of vinyl resin. In industry, including ethylene and small amounts of alpha olefin copolymer. Polyethylene odourless, non-toxic, feel like wax, has good low temperature resistance (the lowest temperature can reach 100 ~ 70 ° C), chemical stability is good, most of acid and alkali erosion (acid) with characteristics of oxidation resistance. Room temperature does not dissolve in solvents, small water imbibition, excellent electrical insulation.

　　Polyethylene for typical thermoplastic, is non-toxic, odourless, tasteless flammability of white powder. Processing of PE resin are the extrusion granulation waxy grain, white appearance. Its molecular weight within 1 loa one thousand. The molecular weight of more than 100000 for ultra-high molecular weight polyethylene UHMWPE3 f. The higher the molecular weight, the physical and mechanical performance, the better, the more close to the requirement of engineering materials. But the higher the molecular weight, the processing difficulty is also increase. Polyethylene melting point is 100-130 - c, its good low temperature resistance. Under 60 ℃ still can keep the good mechanical properties, but using the temperature at 80 ~ 110 ℃.

　　Polyethylene has good chemical stability, resistant to dilute nitric acid and dilute sulphuric acid at room temperature and any concentration of hydrochloric acid, hydrofluoric acid, phosphoric acid, formic acid, acetic acid, ammonia, amines, hydrogen peroxide, sodium hydroxide, potassium hydroxide solution, etc. But not strong oxidation corrosion resistance, such as fuming sulfuric acid, nitric acid and chromic acid and sulfuric acid mixture. The solvent at room temperature can produce slow erosion of polyethylene, and in 90-100 ℃, the concentrated sulfuric acid and nitric acid will quickly erode polyethylene, make its destruction or dissolution.

　　Polyethylene, sunshine and oxygen in the atmosphere, the aging will happen, discoloration, cracks and brittle or pulverization, losing its mechanical properties. Under the processing temperature, also due to oxidation, make its melt plunge it descend, discoloration, streaks, so in processing and using process or when selec material should be pay attention to. Because of polyethylene with above characteristics, easy to processing molding, polyethylene regeneration recycling has far-reaching value.