What is polyethylene resin, what is the nature and purpose?-Iota

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Service > What is polyethylene resin, what is the nature and purpose?

What is polyethylene resin, what is the nature and purpose?

Polyethylene characteristics
Polyethylene is odorless, non-toxic, feels like wax, has excellent resistance to low temperature performance (minimum temperature can reach -70 ~ -100 DEG C), good chemical stability, erosion resistant to most acid-base (not resistant to oxidizing acid), room temperature, soluble in common solvents, water absorption, excellent electrical insulation properties; but polyethylene for environmental stress (chemical and mechanical action) is very sensitive, aging resistance difference.
Properties of polyethylene varies by species, mainly depends on the molecular structure and density.
Polyethylene resin production method and technology
Methods: according to the production of polyethylene polyethylene polymerization pressure can be divided into high pressure method and pressure method, low voltage method; according to the medium to be divided into slurry, solution method, gas phase method.
The main production process: the world has a lot of polyethylene technology company, with LDPE technology of 7, LLDPE and full density technology enterprises 10, 12 enterprises HDPE technology. From the technical development situation, high pressure method and production of the LDPE is the most mature method technology in the production of PE resin, the autoclave method and tubular process technology are already mature, the two kinds of production technology coexist. Foreign companies generally use low temperature high activity catalyst polymerization system, can reduce the reaction temperature and pressure.

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