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The difference between PTFE and polyethylene

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The difference between PTFE and polyethylene

  • Categories:Industry news
  • Author:FEP tube lady
  • Origin:FEP tube lady
  • Time of issue:2019-03-18 09:37
  • Views:

The difference between PTFE and polyethylene

  • Categories:Industry news
  • Author:FEP tube lady
  • Origin:FEP tube lady
  • Time of issue:2019-03-18 09:37
  • Views:

  The difference between PTFE and polyethylene

  Polytetrafluoroethylene [PTFE, F4] is one of the best corrosion-resistant materials in the world today, so it is known as the "Plastic King". Polytetrafluoroethylene is a polymer of tetrafluoroethylene, the English abbreviation is PTFE, and the trade name is "Teflon". The basic structure of PTFE is:-CF2-CF2-CF2-CF2-CF2-CF2-CF2-CF2-CF2-CF2 -. Polytetrafluoroethylene is widely used in various places where resistance to acids, alkalis and organic solvents is required. It is not toxic to humans. However, one of the raw materials used in the production process, perfluorooctanoate (PFOA), is considered to have carcinogenic effects. It can work for a long time at a temperature of +250℃ to -180℃, and can withstand all other chemicals except molten sodium and liquid fluorine.

  Polyethylene: referred to as PE, is a thermoplastic resin made by polymerization of ethylene. It has excellent low temperature resistance (the lowest operating temperature can reach -70~-100℃), good chemical stability, and can withstand most acids and alkalis (not resistant to acids with oxidizing properties). It is insoluble in general solvents at room temperature, has low water absorption, and has excellent electrical insulation properties. However, polyethylene is very sensitive to environmental stress (chemical and mechanical effects) and has poor heat aging resistance. The properties of polyethylene vary from species to species, mainly depending on the molecular structure and density.

  Abbreviation: nCH2=CH2→

  Divided into three types: high pressure method, low pressure method and medium pressure method. High-pressure method is used to produce low-density polyethylene

  The properties of polyethylene vary from species to species, mainly depending on the molecular structure and density.

  Types of polyethylene

  (1) LDPE: low density polyethylene, high pressure polyethylene

  (2) LLDPE: Linear low density polyethylene

  (3) MDPE: medium density polyethylene, bimodal resin

  (4) HDPE: high density polyethylene, low pressure polyethylene

  (5) UHMWPE: Ultra-high molecular weight polyethylene

  (6) Modified polyethylene: CPE, cross-linked polyethylene (PEX)

  Shenzhen Dankai Technology Co., Ltd. specializes in the production of FEP, PFA, PTFE and other fluoroplastic tube, rod, sheet and film products and other insulating materials. The current key products mainly include:

  Teflon tube: Ptfe tube, Fep tube, Pfa tube, Pvdf tube

  Teflon heat-shrinkable tube category: Ptfe heat-shrinkable tube, Fep heat-shrinkable tube, Pfa heat-shrinkable tube, Pvdf heat-shrinkable tube

  Teflon board rod film category: Ptfe board rod film, Fep board rod film, Pfa board rod film, Pvdf board rod film

  Insulation materials: silicone, PE, PVC, UPE, etc.

  Special category: PFA imported connector, spiral tube, spring tube, rotary cutting tube, welding rod, tee, straight through, gasket, joint, taper rod, flared tube, sealing tube, braided tube, bellows, etc.

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