Fluoropolymers are highly efficient plastics with the following characteristics.
The melting points of fluoropolymers are extremely high; most are 200℃ or above.
Continuous service temperatures of fluoropolymers are 150℃ - 260℃, the highest continuous service temperatures for plastics.
|Melting Point||Continuous Service Temperature|
Fluon®PTFE still has tensile elongation of 3% at the very low temperature of -253℃.
|Continuous Service Temperature|
Fluoropolymers remain stable in most chemical environments and are highly resistant to chemicals.
Fluoropolymers do not dissolve in solvents.
Fluon® PTFE and Fluon® PFA offer the most outstanding chemical resistance of all plastics.
As a guideline the table below shows the chemical resistance of Fluon® PFA.
Fluon®PFA Chemical Resistance
|Chemicals||Immersion Temp||Immersion Time||Tensile Strength Retention||Tensile Elongation Retention||Weight Change|
|Fuming Nitric Acid||25||28||88||91||0.61|
|Conc. Hydrochloric Acid||100||28||94||105||0.44|
|Methyl Ethyl Ketone||80||7||86||94||0.61|
Fluon® PTFE, Fluon® PFA and Fluon® ETFE are UL 94V-0 approved with the exception of modified grades such as filled compounds.
Fluon® PTFE and Fluon® PFA are extremely flame-retardant plastics.
The Limiting Oxygen Index of Fluon® PTFE and Fluon® PFA is 95 or above.
Limiting Oxygen Index of Fluon®
|Limiting Oxygen Index (%)||>95||>95||30|
The dielectric constant of fluoropolymers is the lowest of all plastics and hardly changes at all with changes in frequency.
The volume resistivity of fluoropolymers is also extremely high compared to other plastics.
Electrical properties of Fluon®
|Dielectric Constant *||2.1||2.1||2.6|
* 60 to 106 Hz
Fluoropolymers have a low friction coefficient and excellent self-lubricity.
The coefficient of kinetic friction of Fluon® are listed below.
Coefficient of kinetic friction of Fluon®
|Coefficient of kinetic friction||0.11||0.2||0.5|
Fluoropolymers' non-stick properties have led to their well known use in cookware coatings. Any adhesive substances cannot adhere to their surfaces since the water contact angle of fluoropolymers is 100℃ - 115℃.
Fluoropolymers have increased resistance to cold compared to common plastics.
In an outdoor environment fluoropolymers are exposed to conditions which could lead to photolysis, photo-oxidation as well as expansion or contraction if subjected to changes in temperature.
Fluoropolymers resist change or deterioration very well in such severe environments.
Fluoropolymers are highly functional polymers in comparison to other plastics.
Below are tables comparing fluoropolymers and typical common plastics.
High performance of Fluon® is evident.