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PTFE (Teflon)

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  • PTFE (Teflon)
    • Optimum chemical compatibility, low friction for PTFE with FDA EU1935/2004 Approved
    What is the PTFE ?

    PTFE, known as Polytetrafluoroethylene (PTFE), is a polymer, polymerized from Tetrafluoroethylene (TFE) monomers.PTFE is known for its excellent chemical stability, low coefficient of friction, high temperature resistance and electrical insulation properties, and is widely used in many industries.

    Chemical structure and synthesis

    Monomer: The main monomer of PTFE is tetrafluoroethylene (TFE).

    Polymerization: PTFE is synthesized by free radical polymerization of tetrafluoroethylene. The polymerization is usually carried out under high pressure and high temperature, using peroxides or azo compounds as initiators.

    Molecular Structure: The molecular chain of PTFE consists of repeating -CF2-CF2- units with a high degree of symmetry and regularity.

    Our CBD Seals PTFE Compounds information：

    Chemical Stability: PTFE has extremely high chemical stability and is resistant to almost all chemicals, including strong acids, bases and organic solvents.

    Low Coefficient of Friction: PTFE has an extremely low coefficient of friction, the lowest of any known solid material, and is therefore commonly used in the manufacture of non-stick coatings and self-lubricating components.

    High Temperature Resistance: PTFE is able to maintain its properties over a temperature range of -200°C to 260°C, making it ideal for high temperature applications.

    Electrical Insulation: PTFE has excellent electrical insulation properties, making it suitable for use as an electronic and electrical insulating material.

    Non-stick: PTFE surfaces are extremely hydrophobic and non-stick, and are commonly used in the manufacture of non-stick pans and other non-stick coatings.

    Weatherability: PTFE has good UV and ozone resistance and is not easy to age.

    Biocompatibility: PTFE has good biocompatibility and can be used in medical implants and medical devices.

    Processing and vulcanization

    Processing Methods: PTFE is relatively difficult to process because it has an extremely high viscosity in its molten state and does not flow easily. Common processing methods include compression molding, extrusion molding and machining.

    Molding techniques: PTFE can be molded by pre-molding followed by sintering, or it can be machined into complex shapes.

    Areas of application

    Chemical industry: Used in the manufacture of corrosion-resistant pipes, valves, pumps and seals.

    Food processing: for the manufacture of non-stick pans, baking paper and other food contact materials.

    Medical industry: for the manufacture of artificial blood vessels, heart valves and other implants.

    Electronics industry: for the manufacture of high-frequency cables, insulating materials and electronic components.

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

    Automotive: for the manufacture of seals, gaskets and self-lubricating bearings.

    Sustainability

    Recycling: PTFE can be recycled and reused to reduce the impact on the environment. Some advanced recycling techniques can convert waste PTFE into new PTFE products or other useful materials.

    PTFE 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 physiological inertness.

    PTFE is superior to fluoroelastomer in terms of high temperature resistance, chemical stability and low coefficient of friction, but inferior to fluoroelastomer in terms of mechanical properties, elasticity and processability.