| About |
|---|
| Teflon® AF is a family of amorphous fluoropolymers. These materials are similar to other amorphous polymers in optical clarity and mechanical properties, including strength. They also resemble fluoropolymers in their performance over a wide range of temperatures, outstanding electrical properties, and chemical resistance. They are distinct from other fluoropolymers in that they are soluble in selected solvents and have high gas permeability, high compressability, high creep resistance, and low thermal conductivity. They have the lowest dielectric constant of any known fluoropolymer.&& |
| Product Description | |
|---|---|
| Supplier | Chemours |
| Generic | 含氟聚合物 |
| Material Status | Commercial: Active |
| Features | Good flexibility,Good Electrical Properties,Permeability,Solvent resistance,Amorphous |
| Availabilitys | North America,Latin America,Asia Pacific,Europe |
| Process Methods | Dipping coating method |
| Technical Data | |||
|---|---|---|---|
| film | Nominal value | Unit | Test method |
| Oxygen transfer rate | 990 | Barrer | |
| Carbon dioxide permeability | 2800 | Barrer | |
| Nitrogen transfer rate | 490 | Barrer | |
| Water Permeation | 4030 | Barrer | |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | ASTM D648 | ||
| 0.45 MPa, unannealed | 200 | ℃ | ASTM D648 |
| 1.8 MPa, unannealed | 174 | ℃ | ASTM D648 |
| Glass transition temperature | 230 to 250 | ℃ | ASTM D3418 |
| Linear coefficient of thermal expansion | |||
| MD | 3.0E-4 | 1/℃ | ASTM E831 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Dielectric strength | 19 | kV/mm | ASTM D149 |
| Dielectric constant | 1.90 | ASTM D150 | |
| Dissipation factor | 1.0E-4 to 3.0E-4 | ASTM D150 |
| optical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Refractive index | 1.290 | ASTM D542 | |
| Transmittance | > 95.0 | % | ASTM D1003 |
| Dispersion coefficient | 113 |
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| contact angle | |||
| with Water | 105 | ° | |
| Surface energy | 16 | dyne/cm |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Shore hardness | ASTM D2240 | ||
| Shore D, 23 ℃ | 75 | ASTM D2240 | |
| Shaw’s D, 220 ℃ | 65 | ASTM D2240 | |
| Rockwell hardness | |||
| 23℃ | 98 | ASTM D785 | |
| Tensile modulus | 1500 | MPa | ASTM D638 |
| tensile strength | ASTM D638 | ||
| Yield, 23 ℃ | 24.5 to 28.3 | MPa | ASTM D638 |
| Yield, 220 ℃ | 4.70 to 12.7 | MPa | ASTM D638 |
| 23℃ | 24.5 to 28.3 | MPa | ASTM D638 |
| 220℃ | 2.40 to 6.00 | MPa | ASTM D638 |
| Tensile strain | ASTM D638 | ||
| Fracture, 23 ℃ | 5.6 to 10 | % | ASTM D638 |
| Fracture, 220 ℃ | 4.3 to 13 | % | ASTM D638 |
| Bending modulus | ASTM D790 | ||
| 23℃ | 1500 to 1700 | MPa | ASTM D790 |
| 150℃ | 600 to 800 | MPa | ASTM D790 |
| Taber abraser | |||
| 2000 cycles | 200 | mg |
| PHYSICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Density | 1.67 | g/cm³ | ASTM D792 |
| Water absorption rate | |||
| 24hr | < 0.010 | % | ASTM D570 |
| Apparent viscosity of melt | |||
| 350℃，100 sec^-1 | 540 | Pa·s | ASTM D3835 |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
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