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FEP PFA (Teflon Encapsulated)

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  • FEP PFA (Teflon Encapsulated)
    • High-performance seals with extreme chemical and temperature resistance for FEP PFA (Teflon Encapsulated)
    What is the FEP PFA (Teflon Encapsulated) ?

    FEP, fully known as Fluorinated Ethylene Propylene, is a semi-crystalline fluoroplastic, belonging to the modified varieties of polytetrafluoroethylene (PTFE).FEP has excellent properties similar to PTFE, but with improved processability and heat resistance.

    PFA, known as Perfluoroalkoxy Resin (PFA), is a fluoroplastic that is a modified variety of polytetrafluoroethylene (PTFE).PFA has excellent properties similar to those of PTFE, but with improved processability and heat resistance.

    Chemical structure and synthesis

    Monomer: The main monomers of FEP are tetrafluoroethylene (TFE) and hexafluoropropylene (HFP).

    Polymerization: FEP is synthesized by copolymerization of tetrafluoroethylene and hexafluoropropylene. This copolymerization can be carried out at low pressures and temperatures, using peroxides or azo compounds as initiators.

    Molecular Structure: The molecular chain of FEP consists of repeating -CF2-CF2- and -CF2-CF(CF3)- units with a certain degree of randomness.

    Monomer: The main monomers of PFA are tetrafluoroethylene (TFE) and perfluoroalkyl vinyl ether (PAVE).

    Polymerization reaction: PFA is synthesized by copolymerization of tetrafluoroethylene and perfluoroalkyl vinyl ether. This copolymerization reaction can be carried out at lower pressures and temperatures, using peroxides or azo compounds as initiators.

    Molecular structure: The molecular chain of PFA consists of repeating -CF2-CF2- and -CF2-CF(O-CF2-CF3)-units, and is somewhat random.

    Our CBD Seals HNBR Compounds information：

    Chemical stability: FEP inherits the chemical stability of PTFE and is resistant to most chemicals.

    Low coefficient of friction: FEP has a low coefficient of friction, making it suitable for use in the manufacture of self-lubricating parts and non-stick coatings.

    High Temperature Resistance: FEP can be used up to 200°C for continuous use and 260°C for short periods of time.

    Electrical insulation: FEP has excellent electrical insulation properties and is suitable for use in high frequency cables and electronic components.

    Non-sticky: FEP has a good hydrophobic and non-stick surface.

    Weatherability: FEP has good UV and ozone resistance.

    Processability: Compared with PTFE, FEP has lower viscosity in the molten state and is easier to process and mold.

    Chemical Stability: PFA inherits the chemical stability of PTFE and is resistant to most chemicals.

    Low coefficient of friction: PFA has a low coefficient of friction, making it suitable for use in the manufacture of self-lubricating parts and non-stick coatings.

    High Temperature Resistance: PFA can be used up to 260°C for continuous use and 300°C for short periods of time.

    Electrical insulation: PFA has excellent electrical insulation properties and is suitable for use in high frequency cables and electronic components.

    Non-sticky: PFA has good hydrophobicity and non-stick surface.

    Weatherability: PFA has good UV and ozone resistance.

    Processability: Compared with PTFE, PFA has a lower viscosity in the molten state and is easier to process and mold.

    Processing and vulcanization

    Processing Methods: FEP/PFA can be processed by a variety of methods including extrusion, injection molding, compression molding and coating.

    Molding Technology: FEP/PFA can be molded by thermoforming, cold molding and machining.

    Areas of application

    Wires and cables: Used to manufacture insulation for high-temperature and high-frequency cables.

    Chemical industry: for the manufacture of corrosion-resistant pipes, valves and seals.

    Food processing: for the manufacture of non-stick coatings and food contact materials.

    Electronics industry: for the manufacture of protective coatings for electronic components and circuit boards.

    Aerospace: for the manufacture of high temperature and corrosion resistant components.

    Medical industry: for the manufacture of medical devices and implants.

    Sustainability

    Recycling: FEP/PFA can be recycled and reused to minimize the impact on the environment. Some advanced recycling technologies can convert waste FEP/PFA into new FEP products or other useful materials.

    FEP excels in a wide range of industrial applications with its superior high temperature resistance, chemical stability, low coefficient of friction and non-stick properties, as well as excellent electrical insulation, weatherability and transparency, and processing properties superior to PTFE.