- Data Sheet: F1-11
Virgin PTFE (Polytetrafluoroethylene)
Virgin PTFE preferred for parts and components requiring very good mechanical properties.
This material offers an excellent combination of properties typical of the fluoropolymer resins:
• Service Temperature: offers excellent resistance to continuous service temperatures – working conditions from -100° C (-148°F) up to 250° C (482°F) and, for limited periods, even to higher temperatures; Product’s low
temperature resistance allows satisfactory performance down to –200° C (-328°F).
• Chemical resistance: offers high inertness towards nearly all known chemicals. Only attacked elemental alkali
metals, chlorine trifluoride and elemental fluorine at high temperature and pressures might affect properties.
• Solvents resistance: offers insoluble properties in all solvents up to temperatures as high as 300° C (572° F). Certain highly fluorinated oils only swell and dissolve PTFE at temperatures close to the crystalline melting point.
Properties
• Good mechanical properties
• Excellent chemical resistance
• Exceptional temperature resistance
• Excellent electrical insulating properties
• High limiting oxygen index
• UV resistance
• Extremely non-adhesive
• Reduced friction & wear; Low friction behaviour • Suitable for food contact
• High degree of hydrophobicity
Main applications
• Virgin PTFE offers useful properties in various applications such as chemical resistance, thermal stability, cryogenic properties, low coefficient of friction, low surface energy, low dielectric constant, high volume and surface resistivity, and flame resistance.
• These proper ties allow the application of Virgin PTFE in several fields such as Chemical, Eletrical and Electronic, Petrochemical, Automotive, Mechanical, Medical, Aeronautics, Semiconductor and Food industry.
Statement on suitability for contact with foodstuff
FDA Approved US Regulation
• Code of Federal regulation 21 CFR Ch.1; section 177.1550 Perfluorocarbon Resins of the Food and Drug
Administration/US.
EU Regulation
• EU 1935/2004 - 10/2011 on plastic materials and articles to come in contact with food.
| Property | Method | Units | Specification | |
|---|---|---|---|---|
| Physical | Color | - | - | White |
| Specific gravity | ASTM D792 | g/cm3 | 2,130 – 2,190 | |
| Water absorption | ASTM D570 | % | 0,01 | |
| Flammability | UL 94 | V-0 | ||
| Mechanical | Tensile strength | ASTM D4745 | MPa | ≥ 20 |
| Elongation | ASTM D4745 | % | ≥ 200 | |
| Hardness | ASTM D2240 | Shore D | ≥ 54 | |
| Ball Hardness | ASTM D785 | MPa | ≥ 23 | |
| Compression strength at 1% deformation |
ASTM D695 | MPa | ≥ 4 | |
| Deformation under load (140 Kg/cm2 for 24 hrs. At 23° C) |
ASTM D621 | % | 10-13 | |
| Permanent deformation (after 24 hrs. Relaxation at 23° C) |
ASTM D621 | % | 6-7,5 | |
| Coefficient of static friction | ASTM D1894 | 0,08-0,10 | ||
| Coefficient of dynamic friction | ASTM D1894 | 0,06-0,08 | ||
| Wear factor K | ASTM D3702 | 2.900 | ||
| Wear coefficient | - | cm3 min 10-8 Kg m h |
20000-25000 | |
| Thermal | Thermal conductivity | ASTM C177 | W/ m*K | 0,34 |
| Coefficient of linear thermal expansion From 25 to 100 °C |
ASTM D696 | 10-5/°C | 12-15 | |
| Electrical | Dielectric strength | ASTM D149 | kV/mm | ≥ 30 |
| Volume resistivity | ASTM D257 | Ohm*cm | 1018 | |
| Surface resistivity | ASTM D257 | Ohm | 1017 | |
