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[Chemical Knowledge]：Properties and uses of polytetrafluoroethylene

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Polytetrafluoroethylene (Polytetrafluoroethylene, referred to as PTFE) is a high-performance fluoroplastic, with excellent chemical resistance, heat resistance, low temperature resistance, electrical insulation and non-viscous properties, is widely used in the field of chemical production raw materials. This article will detail the properties and uses of PTFE.

1. the nature of polytetrafluoroethylene

1. chemical resistance
polytetrafluoroethylene has high chemical resistance, can resist almost all organic and inorganic chemical substances, including strong acid, strong alkali, oxidant, etc. This property makes PTFE widely used in chemical production and can be used to manufacture linings, valves, seals, etc. of various chemical equipment.

2. Heat resistance
PTFE has high heat resistance and can be used for a long time at high temperature without decomposition and deformation. Therefore, polytetrafluoroethylene is widely used in chemical equipment, pipelines and so on in high temperature environment.

3. Low temperature resistance
PTFE has excellent low temperature resistance and can be used at extremely low temperatures without embrittlement and cracking. This makes PTFE in the low temperature environment in the chemical production has a wide range of applications.

4. electrical insulation
PTFE has good electrical insulation, high volume resistance and surface resistance, is widely used in wire and cable, electrical components and other fields.

5. Non-adhesive
PTFE has extremely low surface energy, is non-adhesive, and is not easy to adhere to any substance. This makes PTFE has a wide range of applications in the manufacture of non-stick coatings, seals, etc.

2. The use of polytetrafluoroethylene

1. Chemical equipment lining
Because polytetrafluoroethylene has extremely high chemical resistance and heat resistance, it is widely used in the lining of chemical equipment to protect equipment from Chemical corrosion and high temperature.

2. Seals and gaskets
PTFE has good sealing performance and chemical resistance. It is widely used in the manufacture of various seals and gaskets, such as valve seals, pipeline flange gaskets, etc.

3. Wire and cable insulation material
PTFE has good electrical insulation and is widely used in the manufacture of wire and cable insulation materials to improve the service life and safety of wire and cable.

4. Non-stick coating
PTFE is non-sticky and is widely used in the manufacture of non-stick coatings, such as kitchen utensils, food processing equipment, etc., to improve the cleanliness and service life of the equipment.

In short, PTFE has a wide range of applications in the field of chemical production raw materials, mainly due to its excellent chemical resistance, heat resistance, low temperature resistance, electrical insulation and non-adhesive properties.

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