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[Chemical Knowledge]：What are the upstream raw materials of PTFE? What do the downstream products contain?

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Polytetrafluoroethylene (PTFE) is a kind of high-performance fluorine plastic, which has excellent chemical corrosion resistance, high temperature resistance, low temperature resistance, wear resistance, non-stick and other characteristics. It is widely used in chemical industry, machinery, electronics, medical treatment, aerospace and other fields. In the field of raw materials for chemical production, the upstream and downstream related products of PTFE mainly include the following aspects:

upstream raw materials:

1. Fluorite: Fluorite is one of the main raw materials for the production of PTFE, which is used for the preparation of tetrafluoroethylene monomer.
2. Anhydrous hydrofluoric acid: Anhydrous hydrofluoric acid is the key raw material for the preparation of tetrafluoroethylene monomer, which is obtained by reacting with fluorite.

downstream related products:

1. Tetrafluoroethylene monomer: PTFE is prepared by the polymerization of tetrafluoroethylene monomer, so tetrafluoroethylene monomer is the direct downstream product of PTFE.
2. Filled modified PTFE: In order to improve the mechanical properties and thermal stability of PTFE, various fillers can be added for filling modification, such as glass fiber, carbon fiber, graphite, etc.
3. Expanded polytetrafluoroethylene: Expanded polytetrafluoroethylene is a kind of polytetrafluoroethylene with microporous structure, which has high specific surface area and good air permeability. It is widely used in sealing, filtration and other fields.
4. PTFE products: PTFE can be processed into various products, such as seals, pipes, valves, pumps, etc., these products are widely used in chemical industry, machinery and other fields.

In short, as an important raw material for chemical production, PTFE has a wide range of upstream and downstream related products, which plays an important role in promoting the development of the chemical industry.

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