INTRODUCTION TO PTFE

PTFE， The scientific name is polytetrafluoroethylene, commonly known as the “plastic king” or “Teflon” ®）” (Registered trademark of DuPont). It is a fully fluorinated high-performance synthetic polymer known for its unparalleled chemical inertness, excellent resistance to high and low temperatures, and extremely low friction coefficient.
Molecular structural formula:[-CF₂-CF₂-]n
This powerful carbon fluorine bond is the root of all its excellent properties.

FEATURES & ADVANTAGES

Feature Description Advantages
Excellent Chemical Resistance Resistant to almost all strong acids, strong bases, organic solvents, and strong oxidants, including aqua regia. Suitable for extremely corrosive environments such as chemical, electroplating, and semiconductor industries.
Wide Temperature Resistance Continuous use temperature range: -190 ° C to+260 ° C. Stable performance at ultra-low or high temperatures, without embrittlement or degradation.
Extremely Low Coefficient of Friction One of the lowest friction coefficients among solid materials (about 0.05-0.10), and non sticky. Used for self-lubricating bearings, guide rails, oil-free seals, and non stick pan coatings.
Excellent Electrical Insulation Has extremely low dielectric constant and loss factor at high frequencies or high frequencies. It is an ideal insulation material for high-frequency cables, printed circuit boards, and electronic components.
Good Weather Resistance Completely unafraid of the effects of ultraviolet radiation, ozone, and harsh weather. Suitable for long-term outdoor use, performance will not decrease.
Physiological Inertia Compliant with FDA certification, non-toxic, and suitable for food and medical contact. Used in the medical device, pharmaceutical equipment, and food processing industries.

MAterial limitation

  • Poor mechanical performance: prone to creep (cold flow), average wear resistance.
  • Poor thermal conductivity: Not suitable for applications that require thermal conductivity.
  • Large coefficient of linear expansion: Dimensional stability is greatly affected by temperature.
  • Difficult to process: conventional thermoplastic injection molding processes cannot be used, and cold pressing sintering is required for molding.

AVAILABLE PRODUCTS

Item Description & Specifications Main Applications
PTFE Sheets/ Plates Thickness: 1mm -100mm+, can be cut into various sizes. Sealing gaskets, sliders, liners, and workbenches in corrosive environments.
PTFE Rods Diameter: 5mm -300mm+, can provide solid or hollow rods. Turning and processing various raw materials for sealing rings, bearings, piston rings, and insulators.
PTFE Pipes/Tubes There are various inner and outer diameters available, including hard and soft tubes (with spiral reinforcement). Corrosive fluid transport pipes, heat exchanger pipes, insulation sleeves.
PTFE Film Extremely thin (micrometer level), can be divided into oriented, semi oriented, and non oriented films. Capacitor dielectric, cable winding insulation, sealing tape, packaging materials.
PTFE Parts Customized processing based on customer drawings, such as O-rings, gaskets, valve seats, etc. Precision components in chemical pumps and valves, automotive, aerospace, and food machinery.
PTFE Raw Material Tape Thin and soft unsintered PTFE tape with ductility. Sealing and filling of water pipe threaded joints.

Application field

  • Chemical industry: gaskets, valve liners, pipelines, pump components, reactor liners.
  • Electronic and electrical: high-frequency cable insulation layer, connectors, printed circuit boards, coil skeletons.
  • Mechanical industry: oil-free lubricated bearings, guide rails, sliders, wear-resistant plates.
  • Food and Medical: Non stick Pot Coatings, Food Processing Rollers, Pharmaceutical Equipment Pipelines, Medical Device Components.
  • Aerospace: seals, insulation components, high and low temperature resistant parts.