SHEETSPTFE
Sheet - Rod - Fabric - Film
01
Product Description
PTFE was accidentally discovered in 1938 by Roy Plunkett, who was working at Kinetic Chemicals at the time. PTFE (Polytetrafluoroethylene) is a synthetic fluoropolymer with a wide range of applications. The best-known commercial brand based on PTFE is Teflon, produced by DuPont.
02
Application Areas
Due to its excellent dielectric properties, it is widely used in the manufacture of cables for aerospace and computer technologies. It is also used in fuel and hydraulic lines due to its very low fluid resistance, in the manufacture of seals and gaskets for shafts, pumps, and valves due to its low friction resistance, and in the manufacture of gear-like parts due to its non-stick properties.
03
Technical tables
2 tablesTable 1
| General PTFE Properties | ||
| Heat | Flame Resistance | Friction and Wear |
| PTFE maintains its properties even when exposed to temperatures beyond the thermal limits of almost all plastics and elastomers. Depending on end-use requirements, its continuous service temperature is 260 °C, and it can withstand even higher temperatures for short periods. | PTFE offers excellent high-temperature and flame resistance with a high melting and decomposition temperature. Flame-spread characteristics such as heat release and flame production rates are extremely low. | PTFE has the lowest coefficient of friction among solid materials. Its wear resistance can be enhanced with glass fiber, carbon, or graphite depending on the intended application. |
| Environmental Contamination | Adhesion / Separation | Low-Temperature Performance |
| PTFE is chemically pure and inert. It contains no oils, stabilizers, plasticizers, antioxidants, or other additives that could contaminate process fluids. | In solid form, PTFE has extremely low surface energy, providing an excellent non-stick and non-wetting surface. | PTFE retains its excellent properties even at very low temperatures. Its impact resistance at such temperatures exceeds that of most other polymers. |
| Corrosion | Service Life | Light Stability |
| PTFE exhibits outstanding chemical resistance and withstands most aggressive organic and inorganic chemicals, acids, and solutions over a wide temperature range. | PTFE maintains its properties even when exposed to oils, solvents, UV radiation, oxidizers, other environmental agents, and high temperatures. It resists discoloration and brittle cracking. | PTFE has the lowest refractive index among solid polymers. Exposure to ultraviolet and infrared radiation does not alter its appearance. |
| Dielectric | Biodegradation | Moisture |
| PTFE provides excellent dielectric strength and dielectric constant with a very low loss factor. Its dielectric performance remains highly stable across wide environmental conditions, outperforming most materials. | In its pure form, PTFE is inert to microbiological and enzymatic attack because it provides no nutrients or porous structure for microorganisms to grow. | PTFE is completely resistant to chemical reaction and acts as an excellent barrier to water. Even after prolonged exposure, its chemical, physical, and dimensional properties remain unchanged. |
Table 2
| Technical Properties | ||||||||
| Hardness Shore A | Density gr/cm3 | Melting Temperature | Thermal Expansion | Tensile Strength | Yield Strength | Friction Coefficient | Dielectric Constant | Dielectric Strength |
| 50-60 | 2.2 gr./cm3 | 326 oC | 135.10-6 K-1 | 3900 psi | 230 bar | 0.05-0.10 | 2.1 1 MHz | 60 MV/m |
