ETFE: Ethylene-tetrafluoroethylene
- Short Name
- ETFE
- Name
- Ethylene-tetrafluoroethylene
- Group
- HTRTP - High-Temperature Resistant Thermoplastics
- General Properties
- Chemical Formula
- Structural Formula
-
Properties
- Glass Transition Temperature
- 75 to 85 °C
- Melting Temperature
- 225 to 275 °C
- Melting Enthalpy
- 46 J/g
- Decomposition Temperature
- 385 to 400 °C
- Young's Modulus
- 1100 MPa
- Coefficient of Linear Thermal Expansion
- 40 *10¯6/K
- Specific Heat Capacity
- 0.9 J/(g*K)
- Thermal Conductivity
- 0.23 W/(m*K)
- Density
- 1.7 g/cm³
- Morphology
- Semi-crystalline thermoplastic
- General properties
- High toughness. High abrasion and dielectric resistance. Weather-resistant. High light and UV transmission (films). Higher resistance to beta and gamma radiation than PTFE
- Processing
- Injection molding, extrusion
- Applications
- Electronics sector (coil formers, base, switches, cable insulation…). Architecture (films). Material for valves, fittings, hoses. Aerospace. Nuclear Industry
Internet Links
NETZSCH Measurements
- Instrument
- DSC 204 F1 Phoenix®
- Sample Mass
- 11.12 mg
- Isothermal Phase
- 10 min
- Heating/Colling Rates
- 10 K/min
- Crucible
- Al, pierced
- Atmosphere
- N2 (40 ml/min)
Evaluation
The 1st heating (blue) shows a relaxation peak that obscures the glass transition and a melting peak with a shoulder (peak temperature 258°C). The glass transition with a midpoint temperature of 80°C is clearer in the 2nd heating (green). The shoulder is gone from the melting transition which peaks at 259°C.