- Materials
- Forms
- Reference Materials
-
Services
-
Services
-
-
Sectors
-
Supporting cutting edge research and development with advanced materials to your needs.
High performance materials for extreme conditions.
Innovative and lightweight materials with high mechanical properties and durability.
Materials used in chemical engineering from consumables to innovative solutions.
Advanced materials characterized by high electrical or insulation performance.
High quality materials for renewable energy.
Biocompatible and biodegradable materials to the highest standards.
High purity, biocompatible materials for high performance devices and applications.
High purity metals and alloys in various forms and crucibles suitable to your needs.
State of the art materials for the next generation of technologies.
High performance materials for extreme conditions.
Durable materials for corrosive environments.
Foils, disks or windows across a range of materials to facilitate your innovation.
Polymers, metal foils, and sustainable materials for your packaging needs.
Your requirements for unique products and attributes will be met across our 170,000+ product range and customization capabilities.
High-quality materials across branded products in various forms including rods, wires, and foils support space technology needs.
Highest quality materials to support your need for small-quantity specialist materials such as graphite and lithium compounds.
High purity materials to improve the reproducibility and reliability of your evaporation processes.
-
- Product Ranges
-
Resources
-
Find out our latest news.
Read our latest insights, and opinions.
Discover our Innovation Discovered podcasts on innovation, products, interesting topics, and more.
Find out how we've worked with our partners
Our latest updates on what we are doing, find out more.
Find out more about us and the great roles we have available for talented individuals. Find out more.
Take a look at our global distributors.
Explore our FAQ resource to help answer your key questions.
Gain a clearer picture of the language used in scientific study
-
- About Us
PTFE Film
Available Configurations
Properties common to all products in this list
| Thickness | Sides |
|---|---|
| 0.0127mm (film) to 20mm (sheet) | 10mm × 10mm to 1200mm × 1200mm |
Need custom configurations? Please contact us.
Key Features
PTFE Film delivers polytetrafluoroethylene's broad chemical inertness, thermal stability, and outstanding dielectric performance in a flat sheet form suited to precision cutting and lamination across electrical, chemical, and analytical applications:
Outstanding Dielectric Performance (up to 170 kV/mm)
PTFE Film offers dielectric strength up to 170 kV/mm and a low dissipation factor of 0.0003–0.0007 at 1 MHz, making it a dielectric substrate of choice for high-frequency electronics where minimal signal loss and reliable electrical isolation must be maintained simultaneously.
Wide Thermal Working Range (–260 °C to 260 °C)
PTFE Film maintains its chemical inertness, dimensional stability, and electrical performance across a working range of –260 °C to 260 °C — spanning cryogenic through to elevated service temperatures where standard polymer films would degrade.
Broad Chemical Inertness
PTFE Film resists virtually all solvents, acids, and reagents, making it suitable for separator layers in lithium-ion batteries and fuel cells, chemically resistant gaskets and seals, and filtration membrane substrates in aggressive media where chemical stability and reliable electrical isolation are equally critical.
Near-Zero Water Absorption (0.01%) & Non-Stick Surface
With water absorption of just 0.01% and a non-stick surface that prevents reagent adsorption, PTFE Film provides inert channel substrates and low-friction flow surfaces for microfluidics and analytical chemistry applications where contamination of reagents or samples must be avoided.
Low Dissipation Factor (0.0003–0.0007 at 1 MHz)
PTFE Film's exceptionally low dissipation factor minimises signal loss in high-frequency electronic assemblies, establishing it as a standard dielectric substrate where electrical signal integrity must be preserved across a wide frequency range.
Industrial Applications
PTFE Film is used across energy, electronics, chemical processing, and analytical sectors where chemical inertness, thermal stability, and dielectric performance must be combined in a precision flat sheet form:
- ✦ Battery & Fuel Cell Separator Layers
- Used as separator layers in lithium-ion batteries and fuel cells, where PTFE Film's near-zero water absorption, broad chemical inertness, and reliable electrical isolation ensure stable performance in the aggressive electrochemical environments encountered in energy storage and conversion systems.
- ✦ High-Frequency Dielectric Substrates
- Applied as dielectric substrates in high-frequency electronics, where a dissipation factor of 0.0003–0.0007 at 1 MHz and dielectric strength up to 170 kV/mm minimise signal loss and maintain electrical isolation in demanding RF and microwave assemblies.
- ✦ Microfluidics & Analytical Chemistry
- Provides inert channel substrates and low-friction flow surfaces in microfluidic devices and analytical chemistry systems, where the non-stick surface prevents reagent adsorption and chemical inertness ensures that film contact does not alter sample composition or analytical results.
- ✦ Chemically Resistant Gaskets & Seals
- Used as gasket and seal material in chemical processing equipment, where resistance to virtually all solvents and acids combined with a working range of –260 °C to 260 °C ensures long service life in the most aggressive process environments.
- ✦ Filtration Membrane Substrates
- Employed as filtration membrane substrates in aggressive media, where PTFE Film's chemical inertness and near-zero water absorption support reliable filtration performance in acidic, solvent-based, and highly oxidising process streams where standard polymer substrates would degrade.
Synonyms
Material Properties
| Element | Value |
|---|---|
| Acids - concentrated | Good |
| Acids - dilute | Good |
| Alcohols | Good |
| Alkalis | Good |
| Aromatic hydrocarbons | Good |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Good |
| Halogens | Good |
| Ketones | Good |
| Element | Value |
|---|---|
| Coefficient of friction | 0.05-0.2 |
| Hardness - Rockwell | D50-55 - Shore |
| Poisson's ratio | 0.46 |
| Elongation at break( % ) | 400 |
| Tensile modulus( GPa ) | 0.3-0.8 |
| Izod impact strength( J m⁻¹ ) | 160 |
| Tensile strength( MPa ) | Oct-40 |
| Element | Value |
|---|---|
| Dielectric constant @1MHz | 2-2.1 |
| Dissipation factor @ 1MHz | 0.0003-0.0007 |
| Dielectric strength( kV mm⁻¹ ) | 50-170 |
| Surface resistivity( Ohm/sq ) | 10¹⁷ |
| Volume resistivity( Ohmcm ) | 10¹⁸-10¹⁹ |
| Element | Value |
|---|---|
| Flammability | V0 |
| Radiation resistance | Poor |
| Refractive index | 1.38 |
| Resistance to Ultra-violet | Excellent |
| Limiting oxygen index( % ) | 95 |
| Water absorption - over 24 hours( % ) | 0.01 |
| Density( gcm⁻³ ) | 2.2 |
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 120 |
| Heat-deflection temperature - 1.8MPa( C ) | 54 |
| Lower working temperature( C ) | -260 |
| Upper working temperature( C ) | 180-260 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1000 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.25@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 100-160 |
Tolerances
| Thickness | ±20% | |
|---|---|---|
| Linear dimension | <100mm | ±1mm |
| Linear dimension | >=100mm | +2 / -1% |