properties

General Properties

Fluoropolymers are highly efficient plastics with the following characteristics.


Resistance to extremes of temperature

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 327℃ 260℃
Fluon®PFA 310℃ 260℃
Fluon®ETFE 270℃ 150℃

Fluon®PTFE still has tensile elongation of 3% at the very low temperature of -253℃.

  Continuous Service Temperature
Fluon®PTFE -100℃
Fluon®PFA -100℃
Fluon®ETFE -80℃


Chemical Resistance

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
  (℃) (Days) (%) (%) (%)
Fuming Nitric Acid 25 28 88 91 0.61
Conc. Hydrochloric Acid 100 28 94 105 0.44
Ammonia 70 28 93 101 0.01
Ethanol 78 7 88 124 0.09
Acetone 56 7 93 119 0.31
Carbon Tetrachloride 78 7 81 116 2.49
Chloroform 61 7 97 109 1.49
Toluene 110 7 99 111 0.77
Xylene 138 7 95 104 0.72
Benzene 80 7 100 108 0.56
n-Hexane 64 7 87 100 0.53
Methyl Ethyl Ketone 80 7 86 94 0.61
Ethyl Acetate 77 7 94 100 0.59
Aniline 185 7 100 97 0.3
Phenol 182 7 84 94 1.33


Flame Retardancy

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®

  Fluon®PTFE Fluon®PFA Fluon®ETFE
Limiting Oxygen Index (%) >95 >95 30


Electrical Properties

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®

  Fluon®PTFE Fluon®PFA Fluon®ETFE
Volume Resistivity(Ω·cm) >1018 >1018 >1016
Arc Resistance(sec) >300 >300 120
Dielectric Constant * 2.1 2.1 2.6

* 60 to 106 Hz


Low Friction

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®

  Fluon®PTFE Fluon®PFA Fluon®ETFE
Coefficient of kinetic friction 0.11 0.2 0.5


Non-stick

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.


Weather Resistance

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.


Comparison between
fluoropolymers and other plastics

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.





About Fluoropolymers

This website is dedicated to fluoropolymers and in particular Asahi Glass' own brand of fluoropolymers, Fluon®.
Fluoropolymers are highly functional plastics with unique characteristics.

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