Products
PFA Film Details Description
Characteristic
Physical Property
|
Item |
Unit |
PFA |
FEP |
Testing Method |
|
Proportion |
|
2.12-2.17 |
2.12-2.17 |
ASTM D792 |
|
Contact Angle (against water) |
Degree |
115 |
114 |
- |
|
Water Absorption rate |
% |
<0.01 |
<0.01 |
ASTM D570 |
|
Melt Viscosity at 380℃ |
Platinum |
（2-25）x104 |
（5-60）x104 |
- |
|
Specific Heat |
J/g/℃ |
1.05 |
1.17 |
- |
|
Melting Point |
℃ |
302-310 |
265-275 |
DSC（10℃/min） |
|
Thermal Conductivity Coefficient |
J.cm/s.cm2.℃ |
2.6x103 |
2.5x10-3 |
ASTM C177 |
|
Linear Expansion Coefficient |
1/℃ |
12x10-5 |
（8-15）x10-5 |
ASTM D696 |
Difficult-Flammability
Like PTFE and FEP, PFA also has non flammability and lower smoke emission compared to ETFE and PDF. Its ultimate oxygen index (oxygen concentration required for continuous combustion) is greater than 95%.
Mechanical Properties
PFA has high mechanical strength at high temperatures and is suitable for a wide temperature range (-200~250 ℃).
|
Item |
Unit |
Meltine Rate |
PTFE |
Testing Method |
||
|
AP-201 |
AP-210 |
AP-230 |
||||
|
Tensile Strength/Elongation |
MPa |
25.5-30.4 |
25.5-30.4 |
30.4-34.3 |
24.5-44.1 |
JIS K6891 |
|
% |
350-450 |
350-450 |
300-400 |
200-400 |
JIS K6891 |
|
|
Bending Strength |
MPa |
No fracture |
No fracture |
No fracture |
No fracture |
ASTM D790 |
|
Bending Coefficient |
MPa |
（6-7）x10-2 |
（6-7）x10-2 |
（6-7）x10-2 |
（5-6）x10-2 |
ASTM D790 |
|
Compressive Strength |
|
|
|
|
|
|
|
1% Deformability |
MPa |
4.9-5.9 |
4.9-5.9 |
4.9-5.9 |
4.9-5.9 |
ASTM D895 |
|
25% Deformability |
MPa |
31.4-33.3 |
31.4-33.3 |
31.4-33.3 |
27.4-30.4 |
ASTM D895 |
|
Compressive Coefficient |
MPa |
（5-6）x10-2 |
（5-6）x10-2 |
（5-6）x10-2 |
（5-6）x10-2 |
ASTM D895 |
|
Hardness |
Shore Hardness |
D60-D70 |
D60-D70 |
D60-D70 |
D50-D65 |
ASTM D895 |
|
Load Deformation Degree |
|
|
|
|
|
|
|
Creep 25℃-13.7MPa |
% |
2.5-3.0 |
2.5-3.0 |
2.5-3.0 |
9.0-10.0 |
- |
|
100℃-6.9MPa |
% |
2.0-3.0 |
2.0-3.0 |
2.0-3.0 |
4.5-5.5 |
- |
|
Total Deformation /25℃-13.7MPa |
% |
8.0-9.0 |
8.0-9.0 |
8.0-9.0 |
14.5-15.5 |
- |
|
100℃.6.9MPa |
% |
8.5-9.5 |
8.5-9.5 |
8.5-9.5 |
14.0-15.0 |
- |
|
Impact Strength (Cantilever Beam Type) |
N/m |
No fracture |
No fracture |
No fracture |
No fracture |
ASTM D256 |
|
Friction Coefficient (Static Friction Coefficient) |
Coated Steel Surface |
0.04-0.05 |
0.04-0.05 |
0.04-0.05 |
0.02 |
- |
Resistance
PFA has high chemical stability similar to PTFE, can withstand ordinary acids, alkalis, oxidation-reduction agents, and various solutions, but is not resistant to molten alkali metals and high-temperature fluorine gas.
Electrical Performance
PFA exhibits extremely low molecular polarity over a wide temperature and frequency range, and exhibits stable low dielectric constant and low dielectric loss.
Gas and Moisture Permeability
|
Gas |
PFA |
FEP |
|
(cm3.cm/cm2.S.atm) |
1.4xx10-8 |
1.2x10-8 |
|
O2 (cm3.cm/cm2.S.atm) |
4.8x10-8 |
3.7x10-8 |
|
Moisture Permeability (Film Thickness: 45 μ m) (m2.24 Hours) |
3.1 |
2.0 |
Metal Ion Precipitation Characteristics
Reference values for metal data of pipes formed by extrusion machines suitable for processing fluorine materials.
|
Metal |
Blank Sample (ppb) |
PFA Pipe |
||
|
1 Day |
7 Days |
30 days |
||
|
Cr |
<0.01 |
0.01 |
<0.01 |
<0.01 |
|
Cu |
<0.02 |
0.05 |
0.03 |
<0.02 |
|
Fe |
0.03 |
0.06 |
0.052 |
0.02 |
|
Mg |
<0.02 |
0.07 |
0.05 |
0.02 |
|
Ni |
<0.01 |
0.05 |
0.03 |
<0.01 |
|
Ti |
<0.05 |
<0.05 |
<0.05 |
<0.05 |
|
Zn |
<0.01 |
0.02 |
0.01 |
<0.01 |
|
Na |
<0.01 |
0.19 |
0.2 |
0.05 |
Test Conditions: 80℃ Ultra Pure Water/ Pipe Size: Φ25mm xΦ22mm/ Analysis Method: ICP-MS (atomic absorption method for Fe, Na)
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