ETFE (ethylene-tetrafluoroethylene copolymer)
Key Features
✔ Mechanical Properties
● Tensile strength reaches 50 MPa – nearly twice that of PTFE.
● Excellent tear resistance, creep resistance, and long-term dimensional stability.
● Elongation at break exceeds 300%.
● Maintains high impact strength at cryogenic temperatures (-80°C / -112°F).
✔ Chemical & Thermal Properties
● Exceptional corrosion resistance against strong acids, alkalis, and organic solvents.
● Melting point: 265–280°C (509–536°F); long-term service temperature: 180°C (356°F); short-term tolerance to higher temperatures.
● Maintains ductility at cryogenic temperatures with a low brittle point.
✔ Electrical Properties
● Stable electrical insulation performance with high dielectric strength and voltage endurance.
● Ideal for wire/cable insulation and electronic components.
✔ Processing & Bonding Characteristics
● Processable via extrusion and injection molding across a wide temperature window.
● Coefficient of linear thermal expansion similar to carbon steel, enabling effective metal compounding.
● Solves traditional PTFE's poor metal adhesion issues.
✔ Weathering & Optical Properties
● Visible light transmittance up to 95%, suitable for architectural glazing.
● Strong self-cleaning surface properties.
● Resistant to UV radiation, extreme temperatures, and atmospheric pollutants.
● Minimal aging during prolonged outdoor exposure.