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Polyethylene plastic production process

Zhong Xiuhua

Article ID: 504
Vol 1, Issue 1, 2018, Article identifier:

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Polyethylene has become the most important polyolefi n plastic with excellent mechanical properties, processing
properties and chemical resistance. It is used in the production of film, packaging and pipe. However, the nonpolar
property and low rigidity of polyethylene limits its application in certain fi elds. The new progress of chemical
modifi cation, physical modifi cation and modifi cation of polyethylene were reviewed. Chemical modifi cation includes
graft modification, copolymerization modification, crosslinking modification, chlorination, chlorosulfonation
modification and plasma modification. There are different methods of polyethylene production which include high
pressure polyethylene, medium pressure polyethylene and low pressure polyethylene. All three methods have their own
benefi ts and shortcomings which coexist in the industry.

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