PTFE is an incredibly versatile material
PTFE is commonly known as Teflon™ (owned by Chemours).
What is PTFE?
Polytetrafluoroethylene (PTFE) is a durable and flexible elastomer of average tensile strength but remarkable chemical resistance, as well as excellent thermally and electrically resistive properties. At a molecular level, PTFE consists of a chain of carbon atoms with two fluorine atoms bonded to each carbon. These fluorine atoms surround the carbon chain, creating a dense molecule with very strong carbon-fluorine bonds and a polymer structure that is inert to most chemicals.
The Advantage of PTFE
|Heat||PTFE retains its properties after exposure to temperatures beyond the limit of almost all other thermoplastics and elastomers. |
Depending on the end-use requirements, PTFE is rated for continuous service at temperatures as high as 500°F.
It also can sustain short exposure at higher temperatures.
|Flame Resistance||PTFE offers extraordinary resistance to high temperature and flames because it has a very high melting point and auto-ignition. |
Temperature, as well as exceptional thermal degradation thresholds.
It’s flame propagation characteristics, such as rate of heat release and smoke generation is very low.
|Friction and Wear||PTFE has one of the lowest coefficients of friction of any solid material. |
Its abrasions resistance is adaptable to demanding environments by using inorganic fillers, such as glass fiber, carbon or graphite.
|Contamination||PTFE is chemically pure and inert. |
It contains no additives such as lubricants, stabilizers, plasticizers or antioxidants that can contaminate process fluids.
|Adhesion / Release||PTFE has an extremely low surface energy in the solid state. |
This provides an excellent anti-stick, non-wetting contact surface.
Conversely, when these resins are in a molten form, they become low surface- tension liquids, ideal for hot melt adhesives.
|Low Temperature Service||PTFE retains its excellent properties even at cryogenic temperatures. |
It’s impact resistance at these temperatures exceeds that of most other polymers.
|Corrosion||PTFE has excellent chemical resistance. |
It will resist most aggressive organic and inorganic chemicals, acids and solvents over a broad temperature range.
|Service Life||PTFE exhibits excellent retention of properties after a long period of time, even at elevated temperatures and in the presence of oils, solvents, UV light, oxidizing agents and other environmental agents.|
|Light Stability||PTFE has one of the lowest refractive indexes. |
It does not change its visual apperance after exposure to ultraviolet or infrared light.
|Dielectrics||PTFE has remarkable dielectric strength, low dielectric constant, low loss factors and high specific resistance. |
It surpasses most material in its level and stability of dielectric properties over a wide range of environmental conditions.
|Biodegradation||PTFE is inert to microbiological and enzymic attack because the pure polymer does not provide any nourishment or porosity for these growths.|
|Atmospheric Aging||PTFE is not affected by ultraviolet and is resistant to oxidation, discoloration, and embrittlement.|
|Humidity||PTFE is completely resistant to hydrolysis. PTFE is a good barrier for water permeation. |
Its typical properties and dimensional stability remain unchanged even after long periods of time in water.