 |
 |
| 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.
PTFE'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. PTFE'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. PTFE 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.
|
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