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.