polyethylene (polyethylene)

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polyethylene

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Ethene, homopolymer
PE

9002-88-4

C2H4

28.054

2933990090

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Nature Description

Odorless, odorless, non-toxic, dull surface, milky white wax particles. Insoluble in most organic solvents, slightly soluble in hot toluene, acetic acid, etc.
??? Low density polyethylene (LDPE) is a kind of plastic material, which is suitable for various molding processes of thermoplastic molding and has good molding processability. LDPE is mainly used for film products, as well as injection molding products, medical instruments, pharmaceutical and food packaging materials, blow molding slush molding products, etc.
??? Linear low-density polyethylene (LLDPE) is ethylene and a small amount of advanced α-olefin (such as butene-1, hexene-1, octene-1, tetramethylpentene-1, etc.) under the action of catalyst, A copolymer formed by high pressure or low pressure polymerization, with a density of 0.915~0.9 low density polyethylene, 40g/

0.95

Product Applications

1. It is mainly used as a monomer for making EVA resin and VAE emulsion by co-polymerization with vinyl acetate, and is used for manufacturing adhesive and coatings, etc. Ethylene is one of the base stock in petrochemical industry and is widely used. In terms of synthetic materials, it is widely used to produce polyethylene, vinyl chloride and polyvinyl chloride, ethylbenzene and styrene..

Production method

Preparation Method of low molecular weight polyethylene: 1. The polymerization method can be divided into high pressure free radical polymerization method and medium and low pressure anionic coordinate polymerization method. The medium and low pressure anionic coordinate polymerization method uses Ziegler catalyst or MoO3Al2O3 catalyst to anionic coordinate polymerization ethylene to produce products. 2. Cracking process under the condition of no contact with air, the high pressure low density polyethylene is cracked under normal pressure or pressure at (380±30)℃, and then the cracking products are cooled and pelletized, non-emulsifying products are obtained. Security: 1. The product is packed in polyethylene weight within packaging film bag. According to the needs of users, polypropylene woven bags can be added as outer packaging, with the net weight of each bag (25.00±0.25)kg. 2. Most of the resin have common dangerous characteristics. It is flammable when exposed to open flame and high temperature. It is dangerous to burn when it comes into contact with oxidant and irritates eyes and skin. It can cause dizziness, headache, nausea, symptoms such as confusion; Safety management and safety technical measures must be strengthened to ensure the personal health and safety of personnel exposed to dangerous chemicals. 3. The products should be stored in clean and dry warehouses and can be transported by trains, cars, ships, etc. Transport tools should be kept clean and dry, without sharp objects such as nails and tarpaulin. Resin belongs to class 3.3 high flash point or class 3.2 flammable liquid with flash point; Common liquid resin is a solution of condensation or copolymer of flammable and toxic raw materials in solvent (such as amino, alkyd, epoxy, polyester resin, etc.). During storage and transportation, attention should be paid to fire prevention, waterproof, sun protection, dust prevention and pollution prevention.