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What is the difference between polyethylene wax and polyethylene?

发布时间:2022-04-28浏览次数:765

Polyethylene wax, also known as PE wax or PEW, is a common chemical material because of its excellent cold resistance, heat resistance, chemical resistance and abrasion resistance. It is widely used in coatings, inks, plastics, rubber and plastics. The color of polyethylene wax is white small bead/flake, which is made of polyethylene through high-temperature cracking processing. It has the characteristics of high melting point, high hardness, high gloss, white color, etc.

Polyethylene is the raw material of PEW, which is a polymer polymerized from ethylene monomer. Due to the difference in polymerization method, molecular weight, and chain structure, polyethylene can be divided into high-density polyethylene, low-density polyethylene and linear low-density polyethylene. vinyl.

Low density polyethylene (LOW DENSITY POLYETHYLENE, LDPE) is commonly known as high pressure polyethylene. Because of its low density and the softest material, it is mainly used in plastic bags and agricultural films.

High density polyethylene (HIGH DENSITY POLYETHYLENE, HDPE) commonly known as low pressure polyethylene, compared with LDPE and LLDPE, has higher temperature resistance, oil resistance, steam permeability resistance and resistance to environmental stress cracking, in addition to electrical insulation and resistance. It has good impact resistance and cold resistance, and is mainly used in blow molding, injection molding and other fields.

Linear low density polyethylene (LINEAR LOW DENSITY POLYETHYLENE, LLDPE) is a copolymer of ethylene and a small amount of higher olefins polymerized in the presence of a catalyst. The appearance of LLDPE is similar to that of LDPE, but the transparency is poor, but the surface gloss is good, and it has the advantages of low temperature toughness, high modulus, resistance to bending and stress cracking, and better impact strength at low temperature.

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