ETFE vs PTFE: a detailed comparison
In the world of technically advanced plastics, the discussion around ETFE vs PTFE often takes a central place. These two materials, although similar in many ways, have unique properties that make them suitable for different applications. In this guide, we take a thorough look at both materials, their properties, applications, and how they compare to each other.
ETFE (Ethylene Tetrafluoroethylene)
What is ETFE?
ETFE, ethylene tetrafluoroethylene in full, is a fluorine-based plastic. It is specifically designed to have high corrosion resistance and strength over a wide temperature range. ETFE combines superior mechanical toughness with excellent chemical inertness and resistance to ultraviolet light.
Key Properties of ETFE
ETFE exhibits several notable properties, contributing to its versatility:
- Very high melting temperature
- Superior mechanical toughness
- Resistant to radiation
- Resistant to many aggressive chemicals (acids/organic solvents)
- Resistant to ultraviolet light
- Good resistance to wear
- Self-cleaning
Applications of ETFE
ETFE finds application in various industries, including:
- Coating of electrical and fiber optic wiring (aviation)
- Semiconductor industry
- Tower packing
- Safety-insulated tools
- Thermoplastic lining in pipes, tanks, and vessels for extra protection
- Pneumatic panels
Technical Data of ETFE
| Property | Unit | Standard | Value |
|---|---|---|---|
| Hardness Shore D | Sh. D | DIN 53 505 | 62 – 72 |
| Ball pressure hardness | N/mm² | DIN 53 456 | 34 – 40 |
| Tensile strength (23°C) | N/mm² | DIN 53 455 | 36 – 48 |
| Elongation at break (23°C) | % | DIN 53 455 | 200 – 350 |
| Tensile modulus (23°C) | N/mm² | DIN 53 457 | 500 – 1200 |
| Coefficient of friction (v-steel – Dynamic) | — | — | 0.4 |
| Diametric shrinkage | % | — | 0 |
| Specific gravity | g/cm³ | — | 1.74 – 1.8 |
| Water absorption | % | DIN 53 495 | 0.02 |
| Dielectric strength | KV/mm | DIN 53 481 | 60 – 90 |
| Volume resistivity | Ωcm | — | 0 |
| Coefficient of thermal expansion (20-100°C) | 1/K.10-5 | — | 13 |
| Thermal conductivity (23°C) | W/K.m | DIN 52 612 | 0.17 |
| Maximum continuous operating temperature | °C | — | 150 |
| Minimum continuous operating temperature | °C | — | -100 |
PTFE (Polytetrafluoroethylene)
What is PTFE?
PTFE, or polytetrafluoroethylene, is a synthetic fluoropolymer with a wide range of applications. It offers high purity, inertness, high temperature resistance, and electrical insulating properties.
Applications of PTFE
PTFE finds application in industries such as (petro)chemical, food and beverage, pharmaceutical, and semiconductor, where its properties are valuable.
ETFE vs PTFE: A Comparison
While both ETFE and PTFE offer excellent chemical inertness and high temperature resistance, there are some important differences that make them suitable for different applications. ETFE has higher tensile strength and is resistant to UV light, making it an excellent choice for outdoor applications. On the other hand, PTFE is known for its high purity and electrical insulation properties, making it popular in specific industries.
Vanéflon: Your Supplier of ETFE and PTFE
At Vanéflon, we provide a comprehensive range of ETFE and PTFE compounds. As a European manufacturer with over forty years of experience, we can produce compounds according to customer requirements. With a wide selection of compounds in stock and a commitment to continuous improvement, we guarantee fast delivery times and high-quality solutions.
Conclusion
In the ETFE vs PTFE comparison, both materials have their unique advantages and applications. The choice between ETFE and PTFE depends on the specific requirements of your project. While both materials offer high chemical resistance and temperature tolerance, they differ in properties such as UV resistance, mechanical strength, and applicability in different industries.
We hope this guide has provided you with a better understanding of the differences and similarities between ETFE and PTFE. If you have any further questions or require a quote, please don’t hesitate to contact us.